02-13-2016, 09:07 PM | #1 |
Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
|
4wd moving woes
truck is a 79 k10 longbed th350 trans NP203 t case.
truck was running and driving for days. I park it and put on the plow. it snows 20 plus inches a couple of weeks ago so I hop in try and put it in four low and it wont move all I hear is like grinding of gears . Call up a buddy and he comes over. we jacked up the truck and tried moving the levers on the transfer case and no matter what we did you could push the truck forward and backward even if the trans was in park. Figuring the transfer case was bad I went out and put in a used transfer case. now we can get the truck to act like its in park but if we fool with the levers no matter where we put them it appears that the transfer case is in neutral... sometimes we can get the wheels to turn a fraction of a turn ( while up on jackstands) nothing on the floor When we took out the transfer case it appeared the trans was good no play in the tailshaft. we had 27 splines on the output shaft and the gear in the case.. Any ideas? anyone close wants to look at this thing for me?
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
02-13-2016, 10:45 PM | #2 |
Registered User
Join Date: Dec 2010
Location: Visalia, Ca
Posts: 707
|
Re: 4wd moving woes
I don't know about the second 203 but the first sounds like my old one the P.O. put gear oil in it instead of 10w30 and with the part time kit it needs to be run in 4wd occasionally to properly lubricate but the gear oil was too thick and it fried the Synchronizers for high and Low and you absolutely had to be rolling to get it to switch between it was a royal pain to have to do and it was anoyying when you were in a bad spot
__________________
<Brandon> 1974 Chevrolet K5 Blazer 350sbc/SM465/NP205, dana44 front, corp 14bolt rear with 4.10s and a powertrax locker, custom rear bumper 400sbc in the works. 1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15 81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in 1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096 1976 Chevrolet C10 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434195 |
02-14-2016, 10:13 AM | #3 |
Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,375
|
Re: 4wd moving woes
Does the transfer case lever move? Something should be happening. If you have it running and in drive, you should hear gears grinding when you move the transfer lever. If you do, then put the trans in neutral and move the transfer lever to put it in gear. The shifter in my K15 gets stiff from lack of use because it goes anywhere in high. My K20 gets shifted much more and the transfer shifts like butter. It's pretty hard to spray some lube in there but that's probably what it needs.
__________________
76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
Bookmarks |
|
|