Chevrolet-does this have a year, make and model?? Also is is manual or
electronic 4wd? Some of this may help us to help you-is the transfer
case locking in? Is the slip shaft locked in, in 4wd?
took the caps off... like brand new/.. packed over kill full of grease..
clean too.. I don't get it.. Maybe the ring gear is broke.. I'll jack it up
tomorrow on jack stands and look underneath while someone is idling it in
drive to see if the drive shafts are both moving etc. THEN I'll pull the pot
off and see if I see hamster shavings.. If so I'm rippong the back off and
3:42 are going in.. posi front and back BONG! instead of the guessing
standard 2:73 that came with BO LO setup.
There is you problem, too much grease. You want to use it very
sparingly in lockup hubs because it will prevent their operation in
cold weather if packed full of grease.
That would not prevent front axle from receiving power. Sound like
they had a internal Tcase failure and switched to 2wd. It is possible
that interal drive chain has failed that powers front. Try removing
rear drive shaft and use 4wd lockand see if it will try to drive front
drive shaft. If not you have a serious problem.
If I push the gear in both side locks and 4wd works ... if it is not locked
in then it won't get power...I know that.. but when I shove them in
manually I have 4wd so I have no clue why your saying chain steady.. you are
forgetting I sawapped this out of a working 4x4.. the only thing not from
the swap is the front axle..
I guess I am not understaning you correctly. If you have a automatic
it came with a NP203 full time chian drive Tcase. There was some after
market kits to convert it to part time but it still had a chain to
drive front axle. On the hubs, I am not sure which style you have but
some have the gear on axle riding in a sleeve that keep it close to
hub gear so the gear cammed from hub selector needs to travel maybe
1/4 inch max to engage axle. If this sleeve or ring the hold this gear
on alxe in place in missing, the hubs will never engage.
the truck is an old 81 , I put a th350 auto on 350 tbi motor the axles are
stock 2:73 stock front and rear from BO LO setup that came with the truck. I
was told the BO LO sucked for everyday driving so I swapped it to TH350 It
seems weird the hubs when you turn to engage are going in quite far but not
far enough to lock the axles.. like I said before almost 1/4 inch short..If
I remove the hub and shove it in by finger and rotate wheel while jacked
up..it locks.. so parts are missing on both sides or the wreckers is right
and they didn't grab the complete parts to install locking hubs to convert
from full time locked to maual locking.. They seemed to have ran into this
problem so I asked them if they had an 8 bolt diff ,that was tested and
working and they pointed me to a 1981 chev th400 auto setup with locking
hubs.. so tomorrow I am taking all the guts both sides to the lock nut.. IF
that fails I am going back with torches and taking the front and rear diff
as they are 4:11....yes shitty highway mileag good for back ups of the back
Actually I do not think you will get worse MPG than you are now,
especailly if you run bigger tires. GM had no bussiness ever putting
2.73 in a 4x4. I would personally go for 4.10 axles. I would not own a
4x4 that did not have at least 3.73's in it and I have owned several
during last 30 years with 4.10's and one with a 4.56. Never regreted
having 4.10a in any of them and actaully wished it was even deeper a
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