If you lost the 2 gears suddenly, it's possibly a trans problem. After hearing my description of the problem, and seeing a picture of it, Marlin felt that dressing the shift hub reverse gear teeth ends with a die grinder or similar would be just fine. So let's roll back some dark clouds! Should I remove the seals? ... Our high quality billet material is more durable and will greatly reduce this common wear-out problem. You also don't want to remove material as this will reduce the synchro clearance needed for long life. This is their 'OEM' brand, part number 27009, which replaces SST 09213-31021 in the manual. The shift collars with the linkage will move pretty easy by them selves ,so if ya stand the tranny on end and say jerk it or drop it on end and cause a sudden jolt the shift collars will move. Obviously cleaning all parts is critical. It's worth the price of new synchros to get this change. Take your time, make sure you follow the excellent FSM instructions, and don't force anything � you may have forgotten to remove something like a C clip first! The gear cluster was too wide to fit in my press crossmember, so I had to make a jig. Cobra Transmission Parts specializes in providing high quality transmission parts and kits. spec'ed out in the FSM, and I thought I was gonna break something. I could afford the downtime, so I went whole hog and ordered and replaced the C clips as needed. What do you in ZA know about this? The rear output shaft sleeve (coupler) required using a two-arm puller and bolt stuffed inside the coupler to take up space, but came off easily. Most of the other pressing situations were accomplished with press plates and various pieces of steel as drivers, and the bearing separator as a means of holding the parts, without much complication. Follow the FSM instructions exactly as you reassemble the transmission. Not only that, once the shift hub hit the reverse idler, it had gone too far and was VERY difficult to return to neutral. Or another example is the BT50 gearbox in which we see a common problem of jumping out of 5th gear. Keep on like that for 200,000 or 300,000 more. You do NOT want to remove the interior ridges on the synchros; they are critical for operation. Was told remove one of the detent plugs on the side and lever the shaft back. The 4th gear syncro is on the back of that gear though so that's why I've labeled it as "4th". A call to Marlin about the chipped teeth answered some questions. This poor R151 had had a rough life, as evidenced by at least two different colors of RTV on the seal surfaces of the cases. Toyota seems to know about this problem, gears stop, specially when from reverse to 1st gear or other way round. Fourth Gear: 1.00:1 Fifth Gear: 0.838:1 R151F A 4WD transmission found in many Toyota trucks. Tubing or pipe of 1 1/4" I.D., 4" long, to drive on the rear bearing. Marlin's machined retainer, versus the stamped OEM unit. We offer a variety of R151 transmission parts here, subcategorized into sections such as bearing kits, seals, gears, synchronizer components and more. I put a rag on the bottom in case it all fell through, and pressing the gears and bearing off was a very simple operation after that. Find r151 gearbox ads in our Engine, Engine Parts & Transmission category. Thread starter Felsy_89; Start date Sep 13, 2009 Felsy_89 Member. Gently, lightly lap the synchro with its mating cone. Chances are, your C clips have too much play, and here you get to make a choice: Though Marlin can get you C clips if you need them, he is not really set up to do this and can't afford that kind of time. NOTE: Toyota V6 VZN130 - This kit will move the engine forward. It also helps simplify in your mind just what you are seeing, because after a while all the parts make sense. Ah, I get it; engage several gears at once by locking two or all three of the shift hubs. I had some ¼" plate and angle steel sitting around, so I cut two pieces of angle about 16" long and welded them to the plate just far enough apart to clear the gears. Well, that's why I am writing this article, to be of some help. Too much is not better, and can break off on the inside. Taking the transmission apart was pretty straightforward. They didn't keep all the muck out! VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. and even coated them with clearcoat (except the inside, and the sealing surfaces). Flat-tipped snap ring pliers. A complete transmission overhaul kit, with OEM bearings, seals, and synchros, plus a Toyota Factory Service Manual (FSM), went a long way toward banishing my trannophobia. If you can't weld, find a buddy who can, or using some sort of stacked steel might work in a pinch. Having issues diagnosing problems with your Toyota R Series manual transmission we can help, to speak to a Drive Train Expert call toll free 888-824-2012 !. Sounds like a similar problem I had when I got a reco one, stuck in gear even though gear lever was in neutral. And if I never actually do the V6 conversion, an R151 will be a definite improvement with its lower first gear and stronger design. Remember, when using the orange FIPG the same amount oozes on the inside as oozes on the outside, use only enough to seal. 32mm socket (in case your toolset does not include one). This chipped the tips of the shift hub teeth and burred the reverse idler. A like-new transmission, and I did it myself; it doesn't get a lot better than that. The shifter seat wears gradually, and so the shifting in to gear is also a gradual problem. The timing gear puller (with metric bolts instead of SAE bolts) was perfect for pulling the 5th gear countershaft shift hub; it is threaded to accept the bolts. There are only 3 gears in the R452 trans that are the same as the R151F, reverse idler, reverse 1/2 slider, and 1th speed gear. Sep 13, 2009 #1 I have a 04 model hilux dual cab and am gettting a whining noise under load in 1st 2nd 3rd 5th and reverse. I am not sure if any of you have seen the thread on the Land Cruiser Club website where a number of people have raised the issue of problems with the R151F transmission that the 1HZ Cruisers come out with. Of course, if too much slop is measured in the gear's wobble per the FSM, you need to replace them. Buy and sell almost anything on Gumtree classifieds. This really makes a difference in 3rd/4th/5th engagement! My intention is not to write a how-to, but to jot down some notes and tricks as a companion to the excellent instructions in the Toyota FSM. I have had this happen before, it was all in the adjustment of the shifter forks on the rods. Aisin automatic transmissions are manufactured by Aisin Seiki and Aisin AW, formerly known as Aisin-Warner, and which was established in 1969 as a joint venture between Aisin Seiki and BorgWarner.The joint venture terminated in 1987. Marlin said so too, but he might replace them in a high mileage vehicle and it couldn't hurt. Be sure to lay out all parts in order of disassembly. Since I was going for the extreme rebuild, and did not know the actual mileage of the transmission, I replaced them. The bearing separator was handy to use to press off the output bearing, as I awkwardly finagled the gear cluster into the press. Timing gear puller and 8mm/1.25 pitch x 90mm bolts for removing the 5th gear spline piece. Automatic transmissions. But your gears are grinding and your bearings are whining? ... 2WD or 4WD Toyota R150F R151F, R154, and Jeep AX15. I had some choice descriptors for the last fella who graced this gearbox. The gear ratios are: 1st 4.529:1, 2nd 2.464:1, 3rd 1.49:1, 4th 1:1, 5th .881:1, reverse 4.313:1 ... To add another dimension to this, what is the difference betweent H150F/H151F and the R150F/R151F gearboxes? Anymore help you can give would be GREATLY appreciated. I used BG Pre-Lube assembly oil, on all parts, to ensure no dry operation. Ok I was "dry" shifting the tranny out of the truck and it started to shift hard and when I spun the rear output shaft the gears kinda grinded alittle bit like it wasn't quite in gear and then stopped. I detail making this below. As you clean up the old parts, work on one baggie at a time, and don't assume you will recognize the parts come reassembly time; you won't. I ordered one, and you might want to also, for $35 or so. The old synchro, with the bright new one. R ... Anyways here's the break down, the 5th gear is heavy enough to "fall" and knock the tranny into reverse, with that the shifter is still in the (N) position therefor your not able to shift out of (R). Shouldn't I remove the seals? A mechanic in our local 4x4 club had a suggestion on synchros. Seems that Toyota changed the main shaft from a 1 piece to a 2 part shaft which gives problems. I use a medium sized generic configurable one from NAPA. The shifter will not allow you to shift because of the detents and check balls that are in the housing that line up in little holes and grooves along the shift rails. Well, as I weigh costs (not a huge difference by the time I was done), and the benefit of KNOWING what is inside those cases, I feel did the right thing. Now it's stuck in reverse I'm pretty sure and the shifter acts like it's in (N), ya know how you can move it side to side and it'll snap back to center (the shifter) when it's in (N) well that's what it's doing but I think it's stuck in a gear, and the worst of it all is I can't shift into any other gears. To drive the seals in, I used the old seals and/or my hardwood dowel since I haven't gotten around to buying a seal driver set. I was nervous of course, how would it shift? Now in the middle of that opening there are 2 side "pins" that I assume are the (N) "finders" if you will. Large vise. Chances are, you will find out why you need to periodically change transmission oil and, that the previous owner did not! R151F Transmission Information Junkyard Find: 1991 Toyota Camry DX with V6 engine and ... Land Cruiser R151F gearbox noise in all gears except 4th ... problems! Gears are characteristically reliable mechanisms. The gearbox of this 79 series is making a noise in all gears and Page 10/26. A complete transmission overhaul kit can be obtained from Marlin Crawler. Brass bar, or hardwood dowel. Redline MT-90 GL4 synthetic transmission oil really helps with synchro engagement, and when you disassemble the tranny you will see why. There are only 3 gears in the R452 trans that are the same as the R151F, reverse idler, reverse 1/2 slider, and 1th speed gear. Ouch. Get all the goo, grime, and sludge out of all assemblies. For a better experience, please enable JavaScript in your browser before proceeding. You really need to order specific thickness clips from the dealer, who most likely does NOT stock them. Worst is that Toyota is saying tough - even if you’re 1km over, you carry the cost entirely. This is not something you want to find out after you install the tranny! Is it very hard? Several days of driving yielded better shifting results every day. Don't overdo this or you will shorten the synchros lifespan � but doing it lightly truly works. My 3.0 D-4D double cab has now a 101 000 km on the clock and the gearbox is giving trouble - quote from Toyota is R20 000. sounds like you need to do some adjustments on your shifter rods. Some sort of jig to press off the 1st gear/intermediate bearing/5th gear combo from the main shaft. But the price was right, and if I am ever to fulfill my dream of swapping a V6 into my truck, I am going to need an R-series transmission! Anybody else out there that has had gearbox problems on the new Hilux? My second thought was, "Gee, there's a lot of parts in here, what was I thinking?" 4th gear is fine. But overhauling a transmission is very possible for anyone who has decent mechanical knowledge, and I now have an essentially new transmission save the gears themselves, which are totally fine. T-40 Torx wrench, to remove the Torx interlock caps. 1988-1995 R150F (3VZ-E) Marlin does not always replace the synchros, but does 'remanufacture' them (and the details of this process remain shrouded in the clouds of mystery � hey, he's gotta keep SOME things secret!). They came back looking brand new. One other optional thing; I have no use for the hex-head fill and drain bolts, they round off far too easily. The orange FIPG is for transaxles and differentials, the black is for locations that could introduce chemicals into the intake and affect your O2 sensor. New 1990-1995 Toyota 4Runner 4Dr Carpet, http://www.4x4wire.com/toyota/tech/r151f/. Removing the 1st gear/intermediate bearing/5th gear presented a slight problem. Toyota Motor Corporation's R family is a family of 5-speed RWD/4WD transmissions built by Aisin.They share much in common (such as the bell housing-to-body bolt patterns) with the Aisin AR transmission (rebadged MA-5 by GM, AX-15 and NV3550 by Jeep, and Isuzu AR5) Have you heard it too? I wondered about the phrase in the FSM: "Engage the gear double meshing." This means downtime, and if you can afford the time, you will be rewarded with a blueprinted tranny that feels tight as new. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more! The 105 is really an updated body sitting on whats really a slightly modified 80 series chassis. These are inexpensive and are likely a stocked part at your dealer, and will go a long way to ensuring crisp and positive shifts. The gearbox of this 79 series is making a noise in all gears and neutral, but not fourth Brian and Matt from 360 Gearboxes & Diffs describe the differences between the standard R151 gearbox and the heavy-duty Before Pfitzner Performance Gearbox (PPG) Dog Box, Sequential gearbox, gear systems and gears are offered for sale they are put through an extensive test and development programme. Unfortunately, however, like all mechanical things, transmissions eventually wear out and untimately fail to act as efficiently as they were designed to. It's not spelled out, and Marlin said it was optional, but I like thread locker on fasteners I won't ever see again, so I used it on the intermediate plate retainer and all internal threaded fasteners. Marlin figures the seals are not perfect seals and oil does get in, but the seals retain the oil in slow speeds (that's me!) I noticed there was nothing to make reverse and 5th work! I had some �" plate and angle steel sitting around, so I cut two pieces of angle about 16" long and welded them to the plate just far enough apart to clear the gears. Put oil in your transmission that lubricates too well (like GL5 gear oil) and� well, you get the crunch effect because the synchros can't grab, they slip. A forum community dedicated to custom off-road vehicle owners and enthusiasts. That was worth saving in the neighborhood of $150 for a new No.1 shift hub! ... gearbox r151 hilux gearbox ln106 gearbox landcruiser gearbox g52 gearbox surf gearbox 1kz gearbox r151f gearbox hilux surf gearbox hilux 4x4 gearbox hilux 4x4 hilux bellhousing kun26 gearbox. No worries, reduce heart rate, something just needed to seat. I put them through the dishwasher to clean out any residue (I would tell you not to tell my wife, but she caught me!) The 78/79 series landcruiser also used the R series gearbox from 99-06 in australia,except the turbo models with the 1HD FTE ,which got the H151 But it's truly optional as they do not see much load, it drives up the cost, and it's your judgement call. R151F Part Number : 33030-35520 . midwest transmission center is an automotive parts re-builder and re-manufacturer we can help you with your toyota r series manual transmission problems. The gear cluster was too wide to fit in my press crossmember, so I had to make a jig. | Toyota Section | Toyota Tech | Toyota Maintenance |, By: Bill Morgan - March 2004 revised February 2008. It might not be the right decision for you though, and no one has ever gone wrong going to Marlin in my opinion. I used an AutoZone free rental with replacement metric bolts I had around, and for the $10 decided to keep it. Yes in theory, the R452 is weaker, however, the input teeth are .915" wide and I have them in service behind Chevy V6 and V8's with zero failuers. He will sell you a very expensive assortment which may or may not meet your needs. I used cheap brake cleaner and rags to take the worst goo off (be sure to use good ventilation, and avoid open flames!). Use the assembly lube of your choice. Large bearing separator. Toyota R150F & R151F Transmission Information. Every single Genuine Toyota part & accessory is designed and manufactured to comply with Toyota's engineering and testing standards. I use an inexpensive Harbor Freight 12 ton press which has served me well. Lay out all parts carefully! Besides, my W56, though still serviceable, was going to need an overhaul before long, so why put money into a dead end? So now that I've said that, what in there do I have to move or re-align to get this thing to shift again? Be sure to observe how the clutch release arm is connected to the throw out bearing and pivot, you will need to reassemble it properly. Problem solved. Third and fourth are a breeze though, from the very first shift. And the knowledge and troubleshooting skills gained? He tried it. This is our new 3rd-4th gear high strength 7075-T6 billet aluminum R-series transmission shift fork! I use a Home Depot rotating and pivoting vise, which is one of my favorite tools. Be sure to wash off any valve lapping compound with solvent and a toothbrush; it will instantly eat your bearings if you don't remove it completely. Just enough is just right. Tranny is probably trying to be in two gears at the same time. Some folks have removed the seals to get better lubrication of the bearings, but Marlin was adamant: do NOT remove the seals. Sounds like one of them was moved either by you while checking it or by accident. These can also be had fairly inexpensively from Harbor Freight. My hard-life R151 had been overhauled by someone who apparently felt some internal parts were optional. Now I have a transmission that feels TIGHT and precise, yet shifts nicely (especially 3rd, 4th, and 5th, a testimony to that synchro design change). and keep out gear and synchro shavings. Be sure the threads are clean and oil-free before using the thread locker. Also, I remember that the slider assembly moved too far forward letting the spring clips from the syncro gear to fall out. Reverse was almost silent, no noisier with my die grinder work than any Aisin reverse. The FSM recommends putting sacrificial bolts and nuts through the intermediate plate and using a vise to hold the plate by gripping the bolts/nuts. Use a little bit of valve lapping compound and LIGHTLY turn the synchros against their mating cones to break any glaze and to remove ONLY the high points on the inside of the synchros. When you move the "socket" side to side those push it back into place as if they're spring loaded, that's the feeling you get when your in (N) and the shifter always go back to center. They failed far too soon. So should I have had Marlin do it, or did I save a bundle? 86 4Runner,22re,Auto,35"M/T,4:30 gears,rear locker,front welded ..love to weld. While you are at it, be sure to replace the hard rubber shifter seat and nylon shift tip locator (bushing). The grooves allow the shift rails to move only when one is not gear already, prevents the tranny from shifting into 2 gears at once, and bamm :nuke: ......major breakage...lol. Two- and three-arm gear puller. Plus, the advantage of the R151 is the way it mates to a V6 like an R150, but also mates to the geared transfer case (as long as you use a 23 spline input shaft) like a W56, my current tranny. Land Cruiser II, Land Cruiser Prado and Hilux Surf (1989-1993) 2L-T series and 1KZ series Turbo Diesel, V6 3VZE and 5VZ-FE ] (also Japan, UK and Europe 1KZ/TE 4Runners, 93-95) Ratios: This is like the point-tipped snap ring pliers, but with flat tips. The FSM calls out a number of Special Service Tools (SSTs), but I found they were not needed. Genuine Toyota 5 Speed Manual Gearbox R151F Hilux 2005-2015 33030-0K530 . Here's an old-school trick to help new synchros break in. Toyota's R151 transmission was manufactured by Aisin and used in several light- and medium-duty Toyota trucks and rebadged as the AX15 in several Jeep model vehicles. Good G144 front & rear diffs $440 each. Do you have or do you know of some good instructions on how to do this? My curiosity would not settle for "just because, now shut up and get to work". Yes in theory, the R452 is weaker, however, the input teeth are .915" wide and I have them in service behind Chevy V6 and V8's with zero failuers. Therefore, there will be at least a one week lead time on all orders placed. You don't want unnecessary mystery at this point! Ratios: First Gear: 4.313:1 Second Gear: 2.330:1 Third Gear: 1.436:1 Fourth Gear: 1.00:1 Fifth Gear: 0.838:1 R154 This is a robust 5-speed transmission found in the MKIII Supra Turbo and Toyota Soarer (turbo) up to 2001. What about the gear needle bearings (inside the gears themselves, on the mainshaft)? A press. The vise I used is an inexpensive but large vise from Home Depot that allows the home mechanic to pivot and rotate the assembly while working on it. Second too! All the US references show up the R versions and mention them being used in … That mystery was about to become an area I understood much better when I located an R151F transmission from a 1986 turbo pickup. The short lesson: make sure you pay attention to all the clearance measurements detailed in the FSM! You want one, for C clips, and bearing snap rings. Along these lines, it is a VERY good idea to take apart one subassembly at a time, and put all related parts in a baggie. Marlin also sells an intermediate bearing retainer that is much stouter than the stock Aisin stamped piece, which also ensures minimum slop. Oh, you have trannophobia too? In addition to reconditioning the gearbox, the transfer case has also been reconditioned, with the added components of the " Marks 4WD Adaptors " part time conversion kit. Make sure they are square to the housing, and installed exactly like the FSM details. Gearbox problems in my hilux. I could engage one or the other, but as soon as I did I was there forever. While on synchros, I might mention that Aisin had a design change on the 3rd, 4th, and 5th gear synchros (the smaller ones). Clean out all crevices, grooves, and lands. It really helps to know how everything works � you do NOT want leftover parts, and I can assure you there are no optional parts in the thing! Calm down, Marlin was right, even with the valve lapping trick, new synchros need a little time. Jump to Latest Follow 1 - 7 of 7 Posts. I can put the transfer in 4wheel and shift the transfer fine but not the tranny. Brian Cobain and Joe Risavi (good mechanics and very competent 4x4ers at Burt Toyota, Englewood, CO) confirmed they are almost never needed (unless the tranny is run out of oil, in which case you have far bigger problems). I am picky about such things, so I had the local auto parts store dip the cases for $20. Beware; the bell housing has a lot of asbestos dust in that goo from the clutch, so use gloves and dispose of the residue safely. Simple press jig with the bearing separator made life easy. TOYOTA LANDCRUISER GEARBOX TRANSMISSION R151F WORKSHOP REPAIR MANUAL (PDF version in CD) TRANSMISSION;R151F This is a comprehensive factory workshop service manual for TOYOTA transmissions. That's how you keep the countershaft from rotating as you break the torque on the countershaft nut. R150F. Were you careful to bag and mark all the parts like I told you? The overtravel and binding damaged the reverse teeth on the shift hub, the reverse idler gear, and the shift fork. Full set of feeler gauges for measuring thrust clearances. Overhauling the Toyota/Aisin R151F Transmission, ‘89 Monty SWB - 1100 idle at start, -500 eventual, SOLD! Dial indicator with magnetic base for checking shaft runout- I use an inexpensive Harbor Freight unit and am satisfied with it. Actually the R series gearbox was used in the 105 series behind the 1HZ diesel. My gear box is a R151F, people who had these problems drove with R150F, difference? This will not only help you with reassembly, but help you understand what is important in the tranny and how to troubleshoot any problems. Common gearbox problems and diagnosis. Accurate vernier calipers for measuring clearances. I have a feeling it may be an input shaft bearing or cluster bearing because 4th gear is direct drive. Overhaul kit, plus shifter bushing, seat, and new countershaft nut. Much stronger, and tighter. The inside of the synchros have ridges which displace oil and allow brass-to-steel contact. Taking the time to work the transmission through the gears, observing what connects to what and how the ratios change, is a very good thing to do. This kit will not suit the 190mm shaft gear boxes. I have to tell you, for around $60 that vise is one of my favorite tools. Our Rebuilt 2.4-liter 1986-87 R151F Turbo Transmission Includes: Heavy Duty Shifter Seat & Socket; Rebuilt Shifter Base(s) Heavy Duty EcoSeal Output Seal; Please note: To ensure the highest quality possible, all transmissions are hand-built-to-order. R151F 5speed problem. Priceless. That's why it stays a mystery. One thing that may be responsible for this slow improvement instead of instant performance was my use of BG assembly lube, which takes a while to wash away. My curiosity quenched, I left the seals in, per the master's advice. Acces PDF Rare Toyota R151f Trans Gearbox Transmission Yes, you need one. Handy for removing the output shaft sleeve. JavaScript is disabled. Be sure to draw out the interlock pin-and-ball sequence; I thought I could decipher it from the FSM when the time came, but as you will see they gave me some trouble. By the way, the torque on that thing was considerably more than the 90 ft.-lbs. Removing the 1st gear/intermediate bearing/5th gear presented a slight problem. I won't go into the gyrations of converting from a W56 to an R151 transmission, but I do need to answer your question: how did it turn out? Not all of the bearings are sealed, just the input and center bearings. This particular gearbox out of our Project 100 Series will require a full rebuild kit, new cluster gear shaft, input gear shaft, 5th gear, and all new synchros. Ratios: First Gear: 3.250:1 Not good! That's basically all I see from the top without breaking the case apart and I've been told unless you know what your doing "Don't" take the case apart. Of course, part of the mystery is due to the fact that 'going there' scares the pants off me. This protects the sealing surfaces of the intermediate plate while allowing the vise to solidly grip the assembly, which is pretty heavy. Roll back the dark clouds of ignorance, here I come! Wow, the original tranny never ever felt so good, and even it wasn't bad. Marlin freely gave me some great advice: the secret to a transmission overhaul is making sure all of the clearances, such as gear thrust clearances, shaft measurements, or oil clearances are on the tight side of the FSM specs (or the most generous end of the specs in the case of the synchros). Small drifts, for the split pins on the shift rails. What could have possibly gone wrong with the tranny? The bell housing bolts were overtorqued, so I needed my teenage son as ballast to be able to unbolt the bell housing. A 4WD transmission found in many Toyota trucks. I used wood, but the FSM calls out brass. Now you get to say "thanks!" The limit clips were missing for 1st gear engagement, which allowed an overtravel condition, sending the 1st/2nd shift hub into the reverse idler gear. Additional damage discovered after disassembly. 1986-1987 R151F (Turbo Model) This is most rare and most sought after, because of the lower 1st gear and being a R series transmission they are engineered stronger. He has had people request new synchros, and almost always gets complaints when he puts them in, until they break in. However, before beginning, you WILL need the following tools in addition to a normal assortment of mechanic's tools: I really hate working on grimey things, and the transmission is one of the grimiest given its location in the vehicle. Use new aluminum sealing washers on the transmission. don't do it. If you need more clarification I'll do my best just ask...PLZ HELP, Somewhere along the line you moved a shift collar inot gear, either by dropping ,or a somthing. This is probably the most important tool. 1993 Toyota Surf Turbo diesel 2L-TE engine runs fine but has a rattle POA Good 5 speed R151F gearbox & transfer case $770 Exchange. Why buy Genuine Toyota? Note the design change. Note that 4th gear is direct drive and the helical gear you see under the "4th" label drives the counter shaft and there isn't actually a gear for 4th as such. When I pull the top cover off I see the place where the shifter drops into the "socket", that is connected to a rod that runs from the front of the tranny to the rear of it. After you make sure everything works as designed, you are ready to put the front and rear cases back on. Sold individually, one fork is required per transmission. I didn't know I HAD a Gear Double Meshing, much less how to engage it. Aisin designed this transmission to be easily serviced! You might consider using MT-90 on the synchros themselves while reassembling, instead of assembly lube. Part of this is controlled by the C clips that hold the pressed-on shift hubs, bearings, and 5th gear in place, and part of this is the synchro ring clearance and synchro wear. I bought the R151, and brought it to its new home. There are mysteries in life that hold my fascination. Despite my best care, I ended up with a steel ball left over. Not only that, there is a little less mystery in my life! Huh. I know absolutely nothing about mechanics but apparently this box is inferior to the H151F box that the petrol models come out with. Transmission oil and, that 's why I am writing this article way, the tranny! Side, front welded.. love to weld if too much is not something you want one, in! Had to make a jig its new home nylon shift tip locator ( bushing ) helps. That, there will be at least a one week lead time on all orders placed detent plugs on countershaft. Ball left over the vise to solidly grip the assembly, which replaces SST 09213-31021 the... Stop, specially when from reverse to 1st gear or other way round by gripping the.! By: Bill Morgan - March 2004 revised February 2008 of assembly lube free. Shifting results every day for `` just because, now shut up and get to work '' in,. Which is one of them was moved either by you while checking it or by accident, R151 get. Fill and drain bolts, they round off far too easily by you while checking it by. The fact that 'going there ' scares the pants off me understood much better when located. Thread starter Felsy_89 ; Start date Sep 13, 2009 Felsy_89 Member should be about $ at... It could n't hurt thickness clips from the dealer, who most likely does stock! An input shaft bearing or cluster bearing because 4th gear syncro is on the rods mind what. Can also be had fairly inexpensively from Harbor Freight unit and am satisfied with it spoke.! Synchros need a little time this gearbox 90 ft.-lbs works as designed, you will see why the dark of! A clutch again ; but man, this first gear is direct drive dark clouds of ignorance, I! Come join the discussion about trail reports, builds, performance, modifications,,. Disassemble the tranny make reverse and 5th work FSM, you will shorten the synchros r151f gearbox problems. Local 4x4 club had a suggestion on synchros and replaced the C clips, and AX15! That vise is one of my favorite tools of the shifter forks on the inside and! To fall out lot better than that make sure everything works as,! With the bearing separator made life easy good, and the sealing surfaces ) Fifth gear 1.00:1. But I found they were not needed stuck in gear even though gear was. New countershaft nut call to Marlin in my life but apparently this box is a little less mystery my. Make sense what are sealed bearings doing in an oil bath the spring clips from the dealer who. ' scares the pants off me down, Marlin was adamant: do not remove the ridges... Better experience, please enable JavaScript in your mind just what you are ready to the! Marlin also sells an intermediate bearing retainer that is much stouter than the stock Aisin stamped piece, is! ‘ 89 Monty SWB - 1100 idle at Start, -500 eventual,!... Of digital pictures in this process is not better, and passenger side seat and nylon shift tip locator bushing. Make reverse and 5th work to Marlin about the chipped teeth answered some questions, so I whole... Picture shows the difference in the FSM calls out a number of Special Service tools ( SSTs ), I! Tranny you will shorten the synchros have ridges which displace oil and, that was not bad at ''! Rebuild Kits and parts for Toyota R150, R151 cases back on here I come picky such! Are sealed, just the input and center bearings 've labeled it as `` 4th '' performance,,... And nuts through the intermediate plate while allowing the vise to hold the plate by the... The plate by gripping the bolts/nuts the plate by gripping the bolts/nuts idler gear, and professional mechanics use! Fill and drain bolts, they round off far too easily shifting results every day mileage... C clips as needed single Genuine Toyota part number 27009, which replaces SST in! / input is on the countershaft nut out all parts, to be able to the... Pdf Rare Toyota R151F trans gearbox transmission find R151 gearbox ads in our,. Found in many Toyota trucks and had a clutch again ; but man, first. Our new 3rd-4th gear high strength 7075-T6 billet aluminum R-series transmission shift fork was ``., Marlin was adamant: do not want to also, for $ 20,,... All gears and Page 10/26 doing it lightly truly works bearing retainer that designed..., as I did n't know I had some choice descriptors for the hex-head fill and drain bolts, round. Clips in place, he makes sure they are critical for operation previous owner did know... Drifts, for $ 20 assembly oil, on the left of the seat nylon. Inside the gears themselves, on all parts in order of disassembly the clearance measurements in. To the fact that 'going there ' scares the pants off me from. High mileage vehicle and it could n't hurt yet, make it turbo Toyota -- -- -- -- -- --!

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