Author Topic: Can you adjust the clutch slave cylinder to fully relieve pressure?  (Read 2456 times)

Offline cwest

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Is there a way to adjust a clutch slave cylinder to fully relieve pressure on the fork?  I just did a auto to manual swap on my 86' K20 and have taken it on a couple test runs.  I started getting a whistling noise when cruising in 3rd gear.  After getting the truck home I got underneath and the bell housing what ridiculously hot.  I think the slave cylinder rod isn't releasing all the way and continuously pressing on the fork maybe causing the TOB to whine and maybe even disengaging the clutch a little and causing it to slip slightly and heat up.  I really hope I didn't hose my TOB and clutch on the first couple outings!!

Also, The transmission itself was leaking gear oil like a sieve.  Like an idiot I assumed the people that rebuilt the transmission would torque the bolts down.  To my naive surprise I was able to torque almost every bolt a half turn with a normal wrench.  Towards the end of my drive too I was getting a lot of grinding trying to downshift into 2nd, could that be a low gear oil issue?
« Last Edit: July 26, 2014, 12:10:40 pm by cwest »
86' Chevy K20
350/SM465/np208

08' Silverado 1500 4X4 WT

Offline bd

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Re: Whistling noise coming from tranny in 3rd gear
« Reply #1 on: July 26, 2014, 12:02:29 pm »
Leaking like a sieve - excessive heat - grinding into 2nd - how low was the oil level?  It may have burned a bearing and/or damaged a synchro.

General rule of thumb: there should be 3/4" - 1" of free play at the clutch pedal if you have lever & rod linkage.  A little less with hydraulic actuation.
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline cwest

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Re: Can you adjust the clutch slave cylinder to fully relieve pressure?
« Reply #2 on: July 26, 2014, 12:12:05 pm »
Sorry, bd, I just revamped my post after doing some more research.  Is there a way to make the slave fully depress.  It seems to be continuously pressing against the fork.
86' Chevy K20
350/SM465/np208

08' Silverado 1500 4X4 WT