Sir you are puting words in my mouth that I did not say. Also you left out the part that I did explain it at Steel Soldiers and thread got removed by the Moderator.
Here I've stated that the issues that happend to me probably WONT happen to most. It's only a potential issue to those who might do extended long trips both on and offroad before heading home. Talking in the thousands of miles trips. The military had a motor pool maitenance at various levels with new part swapping going on often for their equipment at low milage intervals. So of course they had less issues. Less issues with military vehiclees these days might have nothing to do with the actual vehicles though. For it could just as easly be said these trucks and all the other military rigs have had less issues than past cause they completely revamped their matenance procedures based on a whole new construct/set of concpets. It is interesting reading though did only scan thru them myself. But the Govt.. doccuments that set the proposoals to change it all are out there. Didn't save the links sorry. Thus a very different, more efficient system is being used today than when the Dueces were in service.
Now back to topic .
You asked for Documented other failures: At SS. this info was deleted by moderator after a member their went nuts and started yelling liar..... called my mechanic a liar, trashed my parts suppliers calling them all liars and similar bull. It was comical. Unfortunatly it was more than the moderator wanted to deal with so he deleted the whole thread
.
Anyway got some parts for rebuild from a Vendor at SS. He knew of a few others himself that grenaded rear of Tcase and sold them parts and whole tranny. Even he does not speak of that on SS... maybe to avoid the fallout? These folk were not active members of SS. Got most my Tranny parts from a reputable Allison Tranny rebuilder/used-new parts distributer who sold parts for repair of others with same failure if I recall the conversation right. All rigs were in civilian hands. Do I need to get reciepts from these vendors for doccumentation
FACT- The issues with the T/Case I had ended up to have nothing to do with the only odd* thing done by previous owner to the truck that could affect it. I even thought it would have and was surprised to find it did not.
Became fact cause the Clutches in the tranny that would take the brunt of the torture from the previous owners modification had no unusual wear. Besides the issues that these trucks "occasionaly" have; of which mine was the same, were caused by rear driveline vibrations. Rear driveline during PO's modification...... was disconnected.
Base information:
. These are AWD trucks at 70% driving forces applied to rear axle thru Transfer Case via a set of clutches in normal highway mode.
. Rear axle always gets all its power thru a set of gears only. Front axle robs from rears power via clutches in the Tcase to bring motive forces to the front wheels.
. It is said to NOT drive on front axle only. Talked to Allison about driving on front only in emergency or otherwise like you can a typical part time 4wd truck and their reply was..... "Can't say", "Probably would cause problems with clutches", "but it has never been tested, so we have not recommended it. " My Allison Guru parts fellow assumed a clutch issue would occur as well as did a few others. Makes since if 100% of motive forces is being applied to the front wheels via a set of clutches only intended to apply max 50% of motive forces; that these clutches would wear.
So what oddd.. thing did previous owner do
*
. during a long trip home previous owner removed rear drive shaft cause of rear axle issues.
. Modified front Gear Reduction hubs to no longer haveing a "reduction" to allow for highway speeds.
. Put it in 50/50 split ruff terrain mode and drove 1200 miles on front axle only at reasonable highway speeds. (He's a machinist, and a welder in a high-end job requiring those skills daily).
. Returned it back to OEM at end of trip and had rear axle rebuilt along with rear driveshaft.
. oh... and he built a ROP.
The surprise...
My transfer case blew up "on the
back side at the rear driveshaft Yoke (rear housing vibrates and breaks apart spilling some guts of rear of Tcase)" after I bought it on trip home..... same blow up at backside of Tcase as others have had (see documentation above) and same as those documented by the military.
so off it went to Big Rig shop mechanic with 40yrs experience with Allison Tranny's and others. he rebuilt the Tcase (replaced REAR broken housing and few gut pieces). HERE IS THE SUPRISE....... Expecting wear on these clutches I bought new ones and had him replace them.
The clutches came out with no unusual wear. When I reported this finding at SS the thread got deleted as described previously.
more detail
. The Previous owner's modification and trip on front axle only......
Note..
there was not rear driveline installed, to cause issues with back end of Transmission/Tcase later. The break I had at back side of Tcase was Exactly typical of those that had TCase breaks from rear driveline issues. Therefore MOST LIKELY the problem came from the shop whom he had repair rear axle (replaced R&P, bearings, redid brakes etc) and rebuild rear drive shaft. (He'd already swapped back to OEM front hubs) He was in Alaska and off to various forien countries most of last year working on Tankers and the likes. Thus he farmed out that part of rebuilding her. These trucks require rebuilds/maintenance to adhere to tighter tolerances than typical large truck it appears. Seems to me this driveline shop FUBARED their rebuild. My guess is they rebuilt it like it was any other larger truck they do everyday, which would not be to tight enough tolerances for this model rig. Maybe they let slide something that would be fine in normal circumstances; but not for these trucks, like how much play is in the slip yoke?? Amount of play tolerance for this model truck is much tighter than typical trucks. More than .02" of play requires driveshaft replacement. But who knows... maybe they just botched the job and didn't install R&P correctly... or missed slightly bent something else....... let slip by a yoke with a nick in it or small nick in driveshaft (think military requires replament in these cases); ok for a typical truck but not for these orrrr who knows??? . did have my shop investigate for anything else that might have caused rear drive vibrations. There was nothing.
On my rig to avoid this break again, and to reduce on the road maintenance on long trips I've removed the semi-steep rear driveshaft angle ( which compounds vibration; on any truck, problems that might arise with driveshaft or axle, ) by swapping to different rear military axle bringing rear driveshaft up to near horizontal. Besides I no longer trusted the rear axle repairs done previously and there was some play in at what was left of the axle yoke. With labor in rebuilding that one I might as well swap it out. BTW this is same axle change the military did on all new similar models starting in 2008...... hmmm wonder what all the reasons they did that for?
The Previous owner will be giving me a new transmission sometime next year.
OH and lets leave Flack on one bulletin board ........ on that board. That is just good sound NETiquette. No need to waste even more folks time with flack.
