m211 stuck in low range

[jzettek]

hi my name is Jim and i have a 211 i bought a few years ago i have everything on it running pretty good except the transition i cant get it out of low range for anything i was hoping someone out there may have some experience with that or helpful advice?

 

[NDT]

Had that happen, the reduction cone clutch gets stuck. Get it moving about 5 mph in low and then move to high. There will be an ugly bang.

 

[1944mb]

Will it go to neutral, or does it remain in low no matter what? Is the linkage stuck and need oiling?

 

[USMC 00-08]

Good info NDT. I have the same issue with one of my M135's. After checking the linkage, I am going to try that.

 

[jzettek]

yes it will go through all four gears and neutral as well as reverse in low range.

 

[1944mb]

Will it not shift into to high-like physically can't pull it into high? I know USMC has a truck that when shifted to high range it kills the engine. With the engine off can you shift it to high? Sorry, I'm not much help to you, but am interested in condition

 

[jzettek]

yes as a matter of fact i thing when you shifted to high it bogged the eng. down and wanted to stall

 

[jzettek]

yes as a matter of fact i think when i shifted to high it wanted to bog the eng. down

 

[AMGeneral]

I'll second NDTs suggestion, get it moving in low range, then shift it quickly to high while still moving, usually that will get the reduction un stuck

 

[USMC 00-08]

jzettek...I have seen several people over the years complain of this same issue. Keep us posted on the outcome. I will do the same when I give it a try. My transmission is only working in 1st and reverse in low gear. 1944mb is correct that when I shift to high with the engine running, it will kill the engine.

A friend that owned the truck before me said the transmission shifted fine before he parked it in 85 or 87. I started it in 2006, again in 2013 and the transmission issue was present at those times. I will check linkage, etc., to make sure things are moving as they should before I try shifting into high at 5 mph.

Some video footage of what is happening and the shift into high at 5 mph would be neat to see!

 

[dmetalmiki]

I am trying to puzzle this out...The TRANSMISSION is the transfer case, The 'Lump' in front of it! is the GEARBOX.
The Transfer gears are not affected by the gearbox gears.
1) If the transfer case gears will not shift from low to high range (irrespective of the gearbox gear selection) Check the TRANSFER case linkage.
If the transmission is 'WOUND UP' JACK UP one front wheel and one rear set.
Check the rotation ability.
If all seems ok and there was NO 'WHIP' when the wheels came free of the floor, Try reversing in "JUMPS" (using the clutch) While pulling firmly (NOT savagely!) UP on the TRANSFER HI-LOW selection lever.
If that fails after several attempts (backwards AND forwards with ( SHORT - SHARP 'jolts ( whilst applying the lift pressure on the shift lever)) The transfer case needs attention.
Make sure the front wheel drive engages - disengages. (after the 'WIND UP check ( and before commencing the 'JUMP trick' operation)).
Do everything Methodically, SLOWLY, and carefully. Good luck with it, let us know the outcome, and of course the resolution of the problem.

 

[NDT]

Dmetalmiki, your post applies to G742 truck, we are speaking about a Hydramatic GMC. None of those in Europe.

 

[dmetalmiki]

Okay, The post will assist others with the manual set up. However, Since this is the Automatic ("cadillac) version, ah=lah Allison! You WILL have the dreaded reverse "BUG".

[FONT=&quot]Another weak point in the transmission was that High-Range reverse overloaded the rear clutch cone and often caused it to fail. For some reason, this fault was never corrected, so it became standard operating procedure never to use High Range reverse. Unfortunately, many later civilian owners of these vehicles, as well as some National Guard and Army Reserve personnel, were not aware of this flaw, which gave the transmission yet another bad rap.
Strange how many (of the) Modern trucks also have this seemingly (ridiculous?) and very vulnerable fault.
[/FONT]

 

[rosco]

Let's see.... The High/Low range part was an integral unit on the rear of the hydromatic transmission. It was coupled to the Transfer Case via a short jack shaft. The T-case was a single speed with a neutral shift point which was mostly used when the truck was fitted with a winch. There was quite a bit of important linkage assorted with both the Trans & T-case, as well as the engine that governs shift points. Proper adjustment might be in order, as per tech manual.

 

[Squirt-Truck]

If the engine bogs when trying to use high range, the fluid coupling is stuck, the 5 MPH roll and shift is a good start for both conditions, reduction cone and fluid coupling. ( Not torque converter on these.)

 

[jzettek]

hey thanks for the ideas and support guys i will give them a try and let you know. one way or another i will get this fixed i have never let a vehicle beet me yet and this is not going to be the first one thanks and have a great new year jim.

 

[hendersond]

I think NDT and a few others gave me the same advice about 5 years ago. I'm driving in in high or low whenever I want now.

I feel like we all have more problems when we let these trucks sit.

 

[NDT]

I feel like we all have more problems when we let these trucks sit.

This stuck issue happened to me when I was using the M135 as a daily driver! Only happened once in many years of operation.

 

[hendersond]

It happened to me after sitting 2x. I just keep rotating the stock every month now.