View Full Version : hydraulic clutch for 88 4X4
10-24-2010, 11:47 AM
88 4X4 2.9L Have trouble with hydraulic clutch change master cylinder and slave cylinder and still canít get it to work. Wonít build up pressure when bleeding or still no pedal when trying to bleed the system. What did I do wrong?
10-24-2010, 01:42 PM
Have someone else pump it up 5 times, counting 2-3 seconds between pumps, going slow. On the 5th pump of the pedal be sure they keep the pedal pressed down, then open the bleeder valve, close it back off and repeat. Its critical that the pedal remains down when you open/close the bleeder valve or else it will just suck more air into the system. Also, you can only do this about 3 times before you need to refill the clutch master cylinder. If around the 5th time you do this you still have no pedal pressure, your slave cylinder is most likely bad, which we can get into later.
10-24-2010, 01:48 PM
You might also check the hose connection where it leaves the master...I had a very small leak at that point (due largely to not having put the pin in correctly) and mine would not build pressure...ended up having to replace the entire master...
10-24-2010, 08:42 PM
Bleeded slow and fast it's on the third clutch master cylinder new slave and second line from master to slave.
Thanks for the input I'll try it again. I have and 88 that is automatic training wonder how hard it would be to trade it out. Both trucks are the same one is manual the other is auto, and for parts.
10-25-2010, 08:21 AM
I would rather drive the standard for reliability, power, snow, etc. How recently have you replaced these items? It really is a pain in the ass to get all of the air out of these systems.
10-25-2010, 08:29 AM
There is probably air stuck in the master. Did you bench bleed it?
Also, the way it is positioned, air can get stuck in the 'top' portion, and cannot be bled out the normal way. You need to unbolt the master from the firewall, and tip it 'down', so that the actuator rod points towards your floor board. Once you have it at this angle, pump it by hand. Its tough, but possible. Bleed it like this, as in this position, it enables any air stuck in the top of the master to get forced out through the line and slave.
10-25-2010, 08:44 PM
I like standard better Black2000Ranger and BlackBII I tryed to bench it but didn't do it very well I guess, will try the way you said.
11-04-2010, 05:46 PM
Well the bench bleed work, I don't remmber doing it before. The O ring was also bad it still a little spongey so I'm going to bleed it again this Saturday.
Thanks for the help
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