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Hey Doomsday, I had the exact same problem with the trans reading 275-300F and finally solved it this weekend! Per the TM, I went through a lot of maintenance but could have found the issue in about 10 seconds if I looked at it another way. What I did first according to the TM was to verify...

Thanks a ton. I thought there should be a spring to push the rubber end of the slug against the hole. That black disk was on the floor but not sure it wasn't just garbage from something else. I'll look again for a tiny spring.

My air horn had just one trumpet working so I disassembled the thing and cleaned out some debris from the diaphragm. The good news is that while injecting compressed air into the inlet, now both sides honk. However, in an effort to make sure everything was clean I unscrewed the end of the...

Please take a picture of the sand so we can tell whether it is from Afghanistan or Iraq. ( haha) I think the stencil means the truck is bomb proof.

Hey Jim, Thanks for the compliments. I decided not to install the ignition key on this one. Finally noticed there is a padlock plate on the steering column to lock it in place as needed for security. I figure that, along with disconnecting the battery, will keep the thing from wandering off...

I'm using Gulfway Insurers after getting a recommendation from a SS member. http://www.racensur.com/ . It is a commercial policy (even though I don't use the truck commercially) with full coverage and still VERY reasonable . My State Farm and Farmers agents would not cover it.

In this series, I hooked the new cab to the lift and placed it up on the frame body mounts. I slowly rolled it into position and walked around to reconnect the steering shaft during the process. It was a one man job start to finish ( with the lift). It was very nice that all new hardware (...

I buy the paint from Rapco http://www.rapcoparts.com/manuals.html . They sell it in spray cans for the small jobs as well as gallon jugs for the big jobs. I've been buying both for many years and the color match is perfect. For the MK48 I use the 34094 383 Green(CARC)Substitute...

I cleaned the engine and frame with a heated pressure washer and repainted. The engine had surprisingly little oil or grease to remove. I made a little tool to remove the body bushings which worked well. Just about ready for the new cab to go on....

In this series, I attached the lift mechanism and removed the 3 body bolts. The lift worked fine and the cab easily rolled back. Luckily there were no wires left attached. I did let the steering shaft separate and drop down instead of removing the cab steering box as recommended in the manual...

In order to lower the front end to a more manageable height I lifted the rear end by disconnecting the lockout struts and used a high lift jack at the articulation joint. The FPU is pretty balanced front to rear so it was easy to lift the rear. I then put blocks between the axle pad and frame to...

Thanks Albert-- Especially for transporting the cab all the way from CA (via AZ)!!

Well, there's nothing really wrong with the current cab. Just a little worn. But the new one is so beautiful I couldn't resist putting it on. Even has that new car smell! Not sure what I'll do with the one I take off.

Thought I'd start a thread for replacement of the cab on an MK48. Should match a HEMTT pretty closely as well. It's certainly going to be a bit challenging without a forklift and crane but I'm attempting using a 2 post lift and a homemade hoist I made from scrap metal. So far so good in...

Typically there are CDLs for class A and B and there are non-CDL class A and B. You don't need a CDL if it is a private vehicle (not for commerical use) . Most RV drivers use a non-CDL class B. I took my 22 ton MK48 / 14 to the driver test and managed to get a non-CDL class A. The instructor...

Heck Yeah! Sounds like a convoy brewing...

This may have no bearing on what you are seeing but as I looked at page 2075 in the -20 manual for an unrelated issue, I saw that an air line runs from the Axle lock lever to the TC lock-up. Not sure why they are connected but just in case it helps...

I agree with all. One thing that also seems to support the flat spot diagnosis is that coming around large sweeping bends in the highway the bouncing sessions are very short or non-existant. Seems to support that the tires are turning at slightly different rates and get out of sync quickly which...

Keep in mind the left side LVS lugs are reverse ( left hand) threads. Not sure about your rig. I broke 3 wrenches with my breaker bar before I figured that out aua

Dave, Thanks for posting this. I was starting to think I was the only one having the issue! I've put over 200 miles on mine so far. In my case, my MK can be smooth as silk for 2 miles and then starts banging up and down on one side or the other (or both at the same time) for another 2 miles...