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I have an unusual problem with my M923A1 that i'm hoping someone can offer some insight on. The coolant system is creating pressure when COLD. While running, I am not losing a drop of coolant. When I park the truck and let it sit overnight, there is a small puddle of coolant underneath the...

Yeah, I had a clue gringkltaube. Did a lot of homework before I bought it. It was imperative for my purposes to have power steering and a good heater. Very very happy with the truck, 4th year i've owned it- and it hasn't been a yard ornament. Been plowing snow and spreading salt with it since I...

That's one way to look at it, LOL. The other way I can't repeat on here... And here I thought I didn't need any more practice since the figuring out part happened on the R side - the L side was supposed to be the practice side where I already knew exactly what socket sizes I needed! Oh well...

Ok guys, thanks. Kind of... :) I accept defeat and will commence dissassembly. Again..

I was afraid somebody was gonna say that.... I've had this sneaking suspicion myself - BUT it does clearly say "OUTSIDE" on the side that is now outside. So, do you THINK, or you KNOW ? (Fingers crossed here).. :)

I recently had to do some major repairs to my A3 rear axle (blew out both pinion bearings), and wanted to replace the wheel bearings and seals. After a bit of research, I found that the A3 bearings/seals are VERY expensive and apparently not terribly easy to come by. Having disabled my CTIS...

Useless, but funny post nevertheless 73m819. LMAO. Please take and post photos of you crossing the GW Bridge driving that thing. :)

Having recently serviced my M923 for the winter season, I was very surprised and disappointed when I pulled my dipstick and found a sloppy chocolate milkshake instead of fresh, clean 15W40 engine oil. My first step towards diagnosis was to pull the oil pan and pressure test the coolant system...

Update: Acquired a complete rear differential assembly from TacticalTruck (Jeff) over the weekend. I cut the axles and removed the rear driveshaft to make the truck drivable for the short-term. With the weather as it is forecasted here in this area I am not going to tear into the bad rear under...

Zout, please disregard any future "negligent input" from this common core thinker. I'm certainly not in your realm with a lowly 51 posts under my belt. I am not certain where you got the number 141 from, but that is neither here nor there I suppose. Perhaps you've gotten me confused with someone...

Thanks for all for the input. Rustystud, I like your lifting rig. Monkeyboy, no it wasn't my truck in Marshall - although I'm not far from there. As M543A2 and Jeepsinker both said I'm sure to have a bunch of crap down inside the case and tubes that would need to be cleaned out. I can't help but...

Appreciate the advice. Yes, I feel your pain - I owned a towing business for 14 years. Been there and done that with insurance companies. There are times when regardless of how much you pay or how much coverage you have (or think you have) you still have to fight for your rights. Trailer...

Jeepsinker, I got the Goldmember pun LOL. I was just kidding about that part. Thanks though, I did not realize that the "Goldmember" was the ENTIRE guts of the diff. As I said, looking at the illustrations in the TM, it seemed like there was more guts underneath it. Live and learn I reckon...

Jeepsinker, so what you're saying is that this "Goldmember" is the ENTIRE guts of the differential? There's nothing else that goes in the housing besides that? Looking at the pictures in the TM, it appeared to me as though there was another ring gear below and presumably another set of bearings...

2nd attempt at attaching incriminating photo..

Update: Pulled Rr driveshaft, pinion bearings completely gone. 1/2" or better vertical movement in both front and rear pinions. I wonder where all that metal went ??? So, that's the result, perhaps badly blown pinion seal the cause? I only know for absolute certain that this diff lost all its...

Brianp454, thanks for the input. It is a big relief to know that I can still keep the truck in service for now by just eliminating driveshaft/axles. This is a really bad time of year for this to happen. I've already got an M923 Cummins 250 torn apart taking up half my shop with a blown #5...

Porkysplace, I hear what you're saying and actually found the whole top loader assembly at Eastern for $450.00 - not too bad moneywise frankly. I had expected it to be more. My concern is how far down the damage is. I'm concerned that the damage may not be isolated just to the top loader...

I'm kind of leaning that direction. Replacement likely the quickest easiest route. Just thinking out loud here but couldn't I pull the rear rear driveshaft, pull both axles and replace the axle caps, allowing me to use the rear axle just as a non-powered load bearing axle? I've never even pulled...

The Patient: M35A3. Brief History: Driving down highway at about 50mph having traveled about 25 miles at same speed. Began to smell gear oil about 3 miles from house and started hearing a noise at about the same time. Stopped the truck, underneath covered in gear oil in plane with front pinion...