1984 turbo diesel transmission problems.

[Rik]

I have a 5 speed transmission that needs an input and main shaft but i am don't know the transmission model number. It has small reversed idler gear rather than a much bigger one in a transmission that came out of a parts truck I bought for the engine. My transmission I guess originally had a needle bearing on the front of the cluster gear shaft and a double ball bearing in the middle of the cluster gear shaft and then a ball bearing on the end of the shaft. I would like to get a conversation going with someone that could help me figure out what transmission i have for trying to locate parts for it. Thanks Rick.

[Rik]

How can I add pictures and how do log off.

[camoit]

How can I add pictures and how do log off.
to add pictures click the picture icon in the text box. For more info go here.
http://www.mightyram50.net/vbulletin/showthread.php/89-How-To-Pictures-and-Attachments-Tips-and-tricks

to log off it's in the upper right corner.

[Rik]

http://www.mightyram50.net/vbulletin/attachment.php?attachmentid=28101&stc=1 I am hoping that from this picture of the reverse idler and bearing hold down plates from these two transmissions someone could tell me the model numbers of each. The one I have been running is the one with the small reverse idler gear. I would like to rebuild the other one that has a much bigger reverse idler and put that one in my truck. But without knowing the model numbers I can't start searching out parts.

[camoit]

Match up the case to the engine. Then match it to the transfer case. Then mesure the overall length. If it matches up you should be good. Oh and check the shifter location.
You can also use an online vin decoder to see what it had to start with.

[Rik]

Neither the engine or transmission are the original. I bought the truck cheap because it had a bad transmission to use the engine in my truck. Now I want to overhaul the transmission with the heavier reverse idler gear but am not sure what model transmission it is. I believe it is a KM132. I am seeing as I check parts availability that some input shafts say the require a 23mm wide input bearing and some say 24mm. The front bearing in that transmission that came out of my truck has a 21mm input shaft bearing and the small reverse idler. The input shaft in the transmission I want to overhaul is totally toothless because it overheated. When I pulled the transmission out it had no oil in it and looked like it had recently been installed so i am thinking someone forgot to put oil in it. Also the input shaft bearing mount measures 24mm to the snap ring groove but the bearing measures 25mm so I am thinking that may have shoved the input shaft back against the main shaft causing all that heat and possibly burned all the oil out of it.
Could someone tell me a good source for transmission parts? Thanks, Rick

[Sandrailstudent]

Rik,

I found a site while looking for the output shaft seal recently, but have never ordered parts from them. They seem to have a bunch of parts, and might have what you need.

alstategear.com

If they end up having your part and are good to deal with, please let me know. I anticipate needing to repair mine at some point in time.

Thanks,

Chris

[Rik]

Thanks for the reply. I will check out that website. One of my problems is that I do not know for sure the exact transmission I have. I found the main shaft in a picture but it does not give the price. You have to submit an inquiry. Which I will do. Still not sure what input shaft i need because of the difference in the thickness of the input bearing for the case I have. Too thick a bearing and it will set the input gear too far back. I have seen input shafts that call for 23mm front bearing and 24mm thick front bearing. So evidently there are the same transmission with slight variations. Whenever I assemble the transmission I am going to first install the main shaft and the input shaft bare to make sure there is not binding on the pocket bearing between the two. I also need a cluster shaft but i could use the one out of the transmission out of of my truck. The gears except for the first gear on the cluster shaft are a little bit narrower but it would work. Like I said it the other post the transmission is not the original in the truck it came out of so the VIN code probably wouldn't work. I am still gathering information.

[camoit]

Post up a couple of picture of the trans housing. If anyone would know what it is by looking at it. That would be Pennyman.

[xboxrox]

Youtube has some vids of Filipino guys in the Philippines disassembling & overhauling Mitsubishi diesel 5 speed manual transmissions

[Sandrailstudent]

Rik,

Most other users on here have WAY more experience with these than I do. I'll give my simple shortcut for consideration in case you don't get a better answer.

If you have the old bearing, measure it and make it part of your inquiry. Usually, a seller can measure it all and confirm fitment. If the seller can't confirm the dimensions exactly (or you don't have the old one), ask what their return policy is and buy a couple. That's about all the help I can offer. You are in better hands with the veterans here.

Chris

[Rik]

I will take some pictures and post them after while.

[Rik]

Still having trouble downloading pictures. This time I got the file type right but still file size too big I think. I have to remember how I made them smaller last time. I am not very good at computer stuff.

[xboxrox]

Upload photos [my old person method] Windows7 Paint program reduces photo pixel size [up to 1800 pixels get uploaded for me] Cell phone uploads work too but show only the link in a post but not the photo

You'll fix it soon :thumbup:

[Rik]

http://www.mightyram50.net/vbulletin/attachment.php?attachmentid=28105&stc=1http://www.mightyram50.net/vbulletin/attachment.php?attachmentid=28106&stc=1http://www.mightyram50.net/vbulletin/attachment.php?attachmentid=28107&stc=1I have two cases. The one that came out of my truck is the one that still has the gasket on it. That one has a smaller reverse idler and the other one has a much bigger reverse idler with a sliding collar engagement rather than a direct engagement by sliding the gear to engage the reverse idler. The case for that transmission has the front web where the input shaft bearing goes a thickness of about 19mm which takes a different input shaft and a thicker bearing. That transmission also the two tapered roller bearings supporting the cluster gear shaft rather than the the other transmission that has a needle bearing in front of the case and a small double ball bearing that had gone out in that transmission. Also the cluster shaft gears are a little wider on the one i would like to use in my truck. I don't know what vehicle that transmission originally came out of because it was not the original in the truck i got it out of. I got the truck at a good price because the transmission had gone out. It had a 4D56 which I put in my truck.
Anyway is there anyone out there that is familiar with these transmissions that I could get help from I would appreciate it.

[xboxrox]

Transmission Stuff http://https://youtu.be/oTGaCQuvZD8?feature=shared (https://youtu.be/oTGaCQuvZD8?feature=shared)

[Sandrailstudent]

Transmission Stuff http://https://youtu.be/oTGaCQuvZD8?feature=shared (https://youtu.be/oTGaCQuvZD8?feature=shared)

The video was an unboxing of a powerglide adapter for connection to a Mitsubishi motor. It didn't give much info on the Mit. MT.

[xboxrox]

(https://youtu.be/MtPAr14OIQY?feature=shared)https://youtu.be/h0zwDMJIBtY?feature=shared

https://youtu.be/MtPAr14OIQY?feature=shared

https://youtu.be/KTWkFSrKyFo?feature=shared

(https://youtu.be/KTWkFSrKyFo?feature=shared)

[pennyman1]

Try these sites for parts: https://www.ebay.com/sch/i.html?_ssn=transdeals4u&store_name=transdealsforyou&_oac=1&_trksid=p4429486.m3561.l161211 and https://www.transmissionpartsdistributors.com/ . Transmission parts has upgraded parts for these trannys.

[akrockin]

Joining the party late, not sure if you ever found the transmission model numbers or anything or if you're even looking still. I can't say exactly what the numbers are, but I've been working inside both style transmissions and will try to share what I've found:

The retainer with the countersunk bolt holes looks like the one I have out of a Starion. Being from a Starion, mine has a wideblock (2.6L) bellhousing, and doesn't fit the 2.0L in my truck. It should have a 23mm input shaft bearing, tapered rollers on both ends of the countershaft, and a separate reverse gear as part of the 5/R assembly. Reverse gear is helical cut on this transmission. Additionally, the bearing surfaces on the countershaft have a larger diameter for the tapered roller bearings.

The flat retainer looks like the ones out of my KM-132's for the 2.0L in my truck. The countershafts both use ball bearings, not tapered rollers. Therefore the countershaft bearing surfaces have a smaller diameter. Reverse gear is built into the ring on the 5/R Hub, there is no independent reverse gear, and therefore no reverse synchro. Additionally, reverse gear is straight cut on those transmissions. The input bearing is only 21mm thick. The lack of a helical cut reverse may cause issues depending how you mix and match parts, that larger reverse idler is matched to only the helical cut reverse gear.

As you said, there are many variations of the KM-132 transmission. They all use very similar but slightly different parts, which can make it very confusing. If you are interested, I can share a couple manuals I've found that show exploded views of each variant, which can help identify which sub-models you have. I'm no expert, and have been working through many of the same issues myself the last couple of years. One of these days I'm going to do a full write-up of what I've found, but that hasn't happened yet.

As mentioned, allstategear and transpartdistributors both list parts for these transmissions. I have purchased the 21mm input shaft from allstategear, and have no issues with it. So far it seems like a quality part. I have also ordered rebuilt kits from both sites in the past, same experience. If you can figure out which part you need and they have it in stock, I wouldn't hesitate to order from either