Checking 5 speed fluid level

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Changed fluid in my 5 speed yesterday. Only able get in a little over 3 1/2 qts. Truck on level shop floor. Service manual states NV 4500 takes 4 qts. noticed the gearbox slopes to the rear (dose not sit level in chassis). Question is do you fill to the bottom of the fill plug with the truck on a level surface or do you raise the rear of the truck until the gearbox is level.

 

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When the truck is on a level surface. I wondered the same thing when I refilled mine - to get the transmission level you'd have to jack the rear end WAY up in the air. I started to jack the rear up and when I had it 2 feet in the air and the transmission still wasn't level I figured it had to be wrong.



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-Steve St. Laurent - President of the Great Lakes TDR
'98 QC LB (CMNSPWR), 4x4, ISB, 5sp, 4. 10 LSD, TST Powermax, 275hp RV injectors, SW fuel pressure gauge, BD exhaust brake, Isspro turbo temp monitor, front Draw-Tite receiver, rear Draw-Tite class V receiver, BFG 285/75R16 AT KO's, (all the common stuff clipped)

 

[Archive]

Thanks Steve, just wanted to double check. I thought the correct way to check the fluid level was with the truck on a level surface. Just was concerned when couldn't get the full 4 qts in.

Have you had any problem with leaks around the PTO cover gasket after removing the drain plug? Ever since the first fluid change I have always had a very small leak. I think it is leaking from the threads on the drain plug/bolt. I applied was Loctite 242 thread sealer to it this time and hope this will solve the problem.