85 s10 blazer 4x4 not working - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-02-2004, 06:44 PM
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85 s10 blazer 4x4 not working


I recently bought a 85 S10 blazer (for 100 [img]images/graemlins/grin.gif[/img]) But the 4wd doesn't engage. I looked at the vacume motor. it's broken. (I've got a lot of vac leaks to take care of too) I've seen the posi-lok kit. But it seems high to me? I've seen locking throttle kits for tractors and such for much less. Isn't this "basicly" what the kit does? Does the Tcase have to have Vac to engage? I tried to tie wrap the diaphram down but still didn't seem to get the front to engage. (I went back out a still could push it in a little more)

My idea is this. pull the diaphram motor off the bracket. use the bracket to mount the locking throttle cable I was talking about and use a hefy spring (valve spring?) to allow the assembly to engage when it aligns. (I would guess that you couldn't get it to alighn right away)

What do you think? I could put this together for about $20. If thats the only thing keeping my front end from locking in. Also my indicator light didn't come on.

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post #2 of (permalink) Old 02-10-2004, 04:45 PM
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Re: 85 s10 blazer 4x4 not working

<font face="comic Sans MS">That is exactly my plan for engaging the front differential... A throttle cable and use the existing cable (after diaphragm type actuator is removed).

The T-case does not need the actuator to engage it. Your indicator light should go on once the actuator cable is pressed down far enough... I dislike the idea of using vacuum to run the system, and IMO it shouldn't have been done that way in the first place, rather either a mechanical (not likely since the most of the vehicle buying public won't want to deal with that), or an electric actuator...

Good luck and keep us posted as to how it turns out...</font>
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