Jones
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Well, I may have just wasted a week-end.
The rear axle in the baby HEMTT has what I considered excessive play in the gear train. This was based on the fact that, with a driveshaft bolt hole a 12:00, I could rotate the input flange almost far enough for the next bolt hole to assume the 12:00 position.
Got another differential and this one was much tighter; could only rotate flange far enough to move a bolt hole 5/8" to 3/4" from it's starting point.
After a full day's work swapping out the differential, I'm standing there admiring my handiwork and studying the differential I just removed; clean, bright, I can still see the paint from checking the gear contact and I realize that by looking into the hole in the casting that encloses the spiders I can see a big spring staring back at me. I dive into my 24Ps for both M800 and M900 series 5 tons and neither one shows a spring in the exploded view.
With a sinking feeling I realize that Barstow Truck Parts having been my source for the axles is practically next door to Barstow Marine Corps Base and don't I remember a thread saying that some USMC trucks had locker differentials.
My questions:
Do locker differentials naturally have more play in them than standard non-lockers?
Do these aforementioned lockers work for traction control a la Sure-Grip, Posi-Traction, etc. or do they just "unlock" to make cornering easier on tandem rear axle assembly components?
And, Did I just spend a week-end replacing a perfectly good locker differential with a non-locker?
The rear axle in the baby HEMTT has what I considered excessive play in the gear train. This was based on the fact that, with a driveshaft bolt hole a 12:00, I could rotate the input flange almost far enough for the next bolt hole to assume the 12:00 position.
Got another differential and this one was much tighter; could only rotate flange far enough to move a bolt hole 5/8" to 3/4" from it's starting point.
After a full day's work swapping out the differential, I'm standing there admiring my handiwork and studying the differential I just removed; clean, bright, I can still see the paint from checking the gear contact and I realize that by looking into the hole in the casting that encloses the spiders I can see a big spring staring back at me. I dive into my 24Ps for both M800 and M900 series 5 tons and neither one shows a spring in the exploded view.
With a sinking feeling I realize that Barstow Truck Parts having been my source for the axles is practically next door to Barstow Marine Corps Base and don't I remember a thread saying that some USMC trucks had locker differentials.
My questions:
Do locker differentials naturally have more play in them than standard non-lockers?
Do these aforementioned lockers work for traction control a la Sure-Grip, Posi-Traction, etc. or do they just "unlock" to make cornering easier on tandem rear axle assembly components?
And, Did I just spend a week-end replacing a perfectly good locker differential with a non-locker?
Yes ssgtwright-usmc, here it goes ....: Jones, see my post here: