I have been having trouble with my front wheels pulling when i am in 4 wheel drive. It has been going on for a long time but i never really noticed until now. When i am trying to crawl my front axel does nothing. It only works when i floor it and dump the clutch. My front drive shaft spins when i am crawling.

I just did a mini truck disk brake conversion and initially i had the hubs missassembled but i fixed that. This problem started before all of that anyways.

Things you might need to know
chevy 350
H55F tranny
mini truck disk brake conversion
stock everything else

So Any Ideas on what the fuck is my problem.
Could there be a diff in my x-case?as you can see this is really pissing me off

Thanks in advance

What year is the truck? Could be a vacuum leak if it is the vacuum system. My lines were brittle and were engaing/disengageing a little odd.
Aside from that, it sounds like the hubs are still wrong. Does it bind when you turn? COuld you have a broken axle shaft or something?

I pulled the axel shafts out when i did the disk conversion and they were fine. The hubs looked perfect when they went in and i check in 4 wheel drive that when the hubs are locked (the d-shaft does not spin) that the oposite tire spins in the opposite dirrection.

I guess it could still be the hubs but i thought i did a pretty accurate job when i reassembeled them.

Originally posted by TRD
I pulled the axel shafts out when i did the disk conversion and they were fine. The hubs looked perfect when they went in and i check in 4 wheel drive that when the hubs are locked (the d-shaft does not spin) that the oposite tire spins in the opposite dirrection.

I guess it could still be the hubs but i thought i did a pretty accurate job when i reassembeled them.


That is an open front. If it were locked it would spin both tires in the same direction and spin the driveshaft. Try unlocking the t-case, locking the hubs, and only jacking up one side of the truck (Or having someone hold the other tire) When you hold on tire that should make the driveshaft spin when you turn the other side. If you are sure the front is not locking in, it sounds to me like either a t-case or vaccum problem. Check all your connections and lines. Could be any number of things leaking.

Originally posted by TRD
I guess it could still be the hubs but i thought i did a pretty accurate job when i reassembeled them.

OH yeah, no way it's the hubs if when you lock them and spin the tire it spins the other side (Even in the opposite direction)

GET A LOCKER!! Then they will both spin the same direction, the driveshaft will spin oh and you get some other cools "Side affects" too. ;)

I have no vacum shit.

I will do what you said

as far as getting lockers, i have a line on some D60's so i will wait till then to lock it.

thank you

Originally posted by TRD
I have no vacum shit.

I will do what you said

as far as getting lockers, i have a line on some D60's so i will wait till then to lock it.

thank you

Sounds to me like the hubs are locking. Try unlocking the hubs, locking the t-case and driving it...and see if the driveshaft turns

Heres what finnaly got me so pissed.

I was trying to see how much flex my stock cruiser had so i set up severl pallets and used one as a ramp. o drove up onto them in 2 wheel drive till my right rear lost contact with ground. The pallet i was usiong for a ramp got stuck in front of my left rear tire. So i locked the hubs and put it in 4 wheel drive. My friend was watching as my front driveshaft turned but not my front tires. The back was smoking the tires big time. After several attempts to gently crawl off the pallets i got pissed because my front tires weren't doing shit. So i brought it up to 3000+ RPM and dumped the clutch. My front left tire spun along with my right rear.

SUMMARY:

my front d-shaft spins when in 4 wheel drive and trying to crawl however when i get pissed and floor it the front tires do spin. This has been going on for a while now but it was blatently obviouse this time so i need to get this fixed before i move on.

Thank you for the help

Originally posted by TRD
Heres what finnaly got me so pissed.

I was trying to see how much flex my stock cruiser had so i set up severl pallets and used one as a ramp. o drove up onto them in 2 wheel drive till my right rear lost contact with ground. The pallet i was usiong for a ramp got stuck in front of my left rear tire. So i locked the hubs and put it in 4 wheel drive. My friend was watching as my front driveshaft turned but not my front tires. The back was smoking the tires big time. After several attempts to gently crawl off the pallets i got pissed because my front tires weren't doing shit. So i brought it up to 3000+ RPM and dumped the clutch. My front left tire spun along with my right rear.

SUMMARY:

my front d-shaft spins when in 4 wheel drive and trying to crawl however when i get pissed and floor it the front tires do spin. This has been going on for a while now but it was blatently obviouse this time so i need to get this fixed before i move on.

Thank you for the help

:confused: You got me, I don't know what the hell would cause that. Have you pulled the front third member? Or the t-case apart?

I have not pulled any of that apart.

The only thing i think it could be was a diff in my t-case. They have those in all wheel drive cars and trucks. And for 4 wheel drive it has a center lock which engages. All i can think is that i have one of these with a limited slip instead of a locker and it is worn out so thew front only really applies a force when i gas it hard.

Does anyone know if H55F x-case has a diff in it.

Again thank you

TRD,

If the front driveshaft is turning and one of front wheels is not, then I suspect your trouble is in the front axle. To the best of my knowledge there is no differential assy in any of the LC trnfr cases. I could see a defective hub assy, or a front diff problem, but if the front shaft is under power and turning, then that power reaches the front axle via the drive shat, it seems reasonable to inspect the front axle.

If you lock the hubs and place the truck in two wheel drive then you should not be able to rotate the driveshaft more than 15 degrees or so.

The first thing I inspect is the last thing I worked on if the problems could be connnected any anyway. For myself it saves time.

good luck this is a very interesting problem you have

I will try that too.

does anyone know where i can see a write up on the aisin hubs (mini truck).

My main concern is to be sure teh t-case isn't fucked because i am going to be getting D60's here in a little (found 3 sets for 750 a set but i am trying to get a package deal)

Thanks for all the help
Keep it comming

The H55f transmission is coupled to a split-t'fer case same as on a late model 4 spd. -- no diff. in the t'fer case. Plus, if your friend saw the ft. driveshaft spinning but ft. wheels not turning, the problem would not be the t'fer case anyway. Most likely hub or hubs.

so last night when i got home i locked the hubs (in 2 wd) and tried turning the d-shaft and i have play (to be expected) but it does feel solid.

Unfortunatly i don't have a jack at my house yet....

one more thing

after i unlocked the hubs i tried spinning the d-shaft again got the same results as before. (do i need to drive for the hubs to unlock?)

You need to back the cruiser up for a short distance to unlock the hubs. You may need to consider the likely scenario that your 4x is working ok and that your friend's perception of the incident is off.

Originally posted by DonM
You need to back the cruiser up for a short distance to unlock the hubs. You may need to consider the likely scenario that your 4x is working ok and that your friend's perception of the incident is off.

That is what i have been believing for a year now. I didn't believe another friend when he said the front wasn't spinning and we checked the hub and the t-case (locked and in gear) and it was. He even took a picture of the fronts not spinning while i was climbing:eek:

so after i left his house i went in a gravel lot and locked every thing in again and did a 4 wheel burn out and everything spun.

after that i assumed the previouse was figment of my imagination.

The probelem is this figment of my imagination keeps comming back. This time i am 100% sure the fronts aren't spinning )more than 1 spectator).

Looks like my t-case is ok though (what do you think)

I will make this my excuse for buying D60's :D

thanks for the help

Pull the rear driveshaft out.

Put it in 4wd, lock the hubs and take it for a short drive.

If it drives fine, no noises, slippage etc, I would say that everything is ok.

good idea, i will try that tonight.

It sounds to me that something in the front axle is a little wacky. I can see why you're so :mad:

alright i finally got around to checking out the front end. I pulled the rear d-shaft (disconneted from tranny and held it up with a strap) and locked the hubs and put it in 4x4. I was able o drive like that (didn't go more than a foot b\c rear was still attached to axel) I did do a front wheel drive burn out in low range and i was able to pull forward in Hi range too. I did find that my t-case appears to have two neutral positions. One between 4hi and 4 lo and one above 4lo in the J pattern:confused:

maybe i had it in that position and for some reason my rears are still powered in that position. I'll ramp it again when i get the chance (wed night?)

thanks for all the help

Originally posted by TRD
alright i finally got around to checking out the front end. I pulled the rear d-shaft (disconneted from tranny and held it up with a strap) and locked the hubs and put it in 4x4. I was able o drive like that (didn't go more than a foot b\c rear was still attached to axel) I did do a front wheel drive burn out in low range and i was able to pull forward in Hi range too. I did find that my t-case appears to have two neutral positions. One between 4hi and 4 lo and one above 4lo in the J pattern:confused:

maybe i had it in that position and for some reason my rears are still powered in that position. I'll ramp it again when i get the chance (wed night?)

thanks for all the help

You should have 2 wheel drive low too. Maybe that's what happened?

Originally posted by GloNDark


You should have 2 wheel drive low too. Maybe that's what happened?

i know that this happens in the split cases, when you remove the gueard (bolted to the t-case linkage, you can select low 2

great for the boat ramps, or just playin with your mates, when you let them drive ;) (geez this POS is sloooowww)