1989 Camaro RS - 5 speed.
I was going to adjust my clutch pedal, as
it has come to the point about 1" of travel
disengages the clutch - and heavy acceleration causes it to slip a bit.
Looking in my repair manual, it says 1984 on
have automatic adjustment. Is this true?
Can I adjust somewhere, or is my clutch
needing replacement?
Thanks.

 

Automatic adjustment is just because it's hydraluic. The old style clutches that had cables and such needed to be adjusted as the cable stretched over time. The theory is the same as "self-adjusting" brakes. As the clutch wears, the fork will push the slave cylinder pushrod in more, than as the master cylinder pressurizes the slave it can only move a specified distance (let's say 3/4") from where the fork naturally stopped. Thus automatically "adjusting" it. However, hydraluics can go bad. Slipping conditions can not to my knowledge be caused by malfunctioning hydraluics because when the master cylinder isn't pressurized then there is no way for the slave cylinder to hold pressure or increase it and thus no way for it to move the fork.

------------------
'84 Trans Am
Crate 350 - 4 bolt main, Holley 600 w/vac. secondaries now open element
T-5 - Stock with Zoom clutch and PP

 

You need a clutch. The problem is that the disc is worn so thin that the diaphragm no longer can travel far enough to put pressure on it.

And the other post is correct, there is no manual adjustment. The hydraulic system takes care of that by itself. 83 back f-bodies used a mechanical linkage that did require periodic adjustment, and had all the other usual linkage clutch problems; I got so sick of it in my 83 that I put a hydraulic system from a junk car into mine. It is also correct that a malfunctioning hydraulic system cannot cause slippage; it can however cause hard shifting by not pushing the clutch far enough to release.

------------------
"So many Mustangs, so little time..."