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Old 03-09-2010, 05:02 PM   #1
mr duck OP
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Chevy Silverado clutch adjustment

Have a new to me '01 silverado with the 6 cyl and 5sp. Looked at bell housing and don't see a way to adjust the clutch. Also can't find the darn reverse light switch.

Direction welcome.

-Bob
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Old 03-09-2010, 06:11 PM   #2
motoxer667
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Quote:
Originally Posted by mr duck
Have a new to me '01 silverado with the 6 cyl and 5sp. Looked at bell housing and don't see a way to adjust the clutch. Also can't find the darn reverse light switch.

Direction welcome.

-Bob
It should be a hydraulic clutch and would not need any adjustment. As far as the reverse light switch look up near where the shifter is at on the case.
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Old 03-09-2010, 06:32 PM   #3
LuciferMutt
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Why do you think the clutch needs to be adjusted? Is it engaging too high in pedal travel? If so you need a new clutch, it's just worn out. Is it engaging too low? Bleed the clutch system and check to make sure the master or slave cylinders are not leaking.
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Old 03-09-2010, 06:52 PM   #4
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You may find an adjustment of the actual pedal, but as mentioned hydraulic systems themselves either get air and need bleeding, or fail and leak. Not a fun job typically.
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Old 03-09-2010, 08:17 PM   #5
mr duck OP
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Quote:
Originally Posted by DevilNinjaDog
Why do you think the clutch needs to be adjusted? Is it engaging too high in pedal travel? If so you need a new clutch, it's just worn out. Is it engaging too low? Bleed the clutch system and check to make sure the master or slave cylinders are not leaking.

Thanks. Too low. It doesn't feel mushy. I'll bleed after this next batch of rain.
This is the newest vehicle I own. With no adjustment, how is wear accommodated?
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Old 03-10-2010, 11:07 AM   #6
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Quote:
Originally Posted by mr duck
Thanks. Too low. It doesn't feel mushy. I'll bleed after this next batch of rain.
This is the newest vehicle I own. With no adjustment, how is wear accommodated?
There is no cable to stretch. Wear on the plates or the springs is facilitated by the clutch fluid filling out the throwout bearing, which is very minimal, if any. As was said, it works or it has failed.

You can have 3 general situations:
1. It works.
2. There is a slow leak in the system, (hopefully) between the fittings (hopefully accessible). If you lose enough fluid you'll pull air into the system and you'll need to bleed the system properly to get it out.
3. The throwout bearing (slave cylinder), the master cylinder, or the lines connecting them have failed and as long as it's not the master cylinder, which rarely fail on most any make, you're looking at pulling the transmission off to replace some parts.

Fluid can get old, break down, and become ugly. You might just have this as your issue. Bleed a new can of the recommended fluid (typically ATF) through the system and see if the feel improves. If it's still bottoming out after a few days of use, there's a good change you need a new throwout bearing.

Also, if you are having problems during wet weather, it's a sign that water is making its way into the system. I did have an old Jeep that would suck water in faster than it would leak clutch fluid out. The clutch would work decent until it rained, and then the water contact would cause the fluid to break down and I'd have to rebleed the system until I finally gave in to replacing the line that was split near the throwout bearing.

sideshow screwed with this post 03-10-2010 at 11:12 AM
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Old 03-10-2010, 05:27 PM   #7
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Sure you don`t mean brake fluid?
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Old 03-10-2010, 05:53 PM   #8
sideshow
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Quote:
Originally Posted by Bayner
Sure you don`t mean brake fluid?
Ya know, I do! Not sure what was in my head. ATF is used in some systems for power steering fluid, though.
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Old 03-10-2010, 06:26 PM   #9
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I have that truck, in a 1990 version - 350 CID.

I have found that the clutch feels different according to the fluid level in the reservoir. If it's low, top it up. Make sure to change the fluid soon: no one ever does that, and your old fluid is probably stanky.

I put a new slave cylinder in about 50K ago. I have about 250k on mine, still using the original clutch (I bought this one new, factory ordered to my specs) and mine is 4WD, K2500. It's a beaut.

Cheers,
Jon-Lars
Beverly, WA
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Old 05-19-2013, 01:41 PM   #10
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Thanks guys. It looks like I'll be "pulling the transmission and replacing some parts". Because everything is inside the bell housing, including the coaxial slave, I'll replace the disk, bearing, pressure plate, and slave. May as well do the shifter bushings at the same time. New fluid and bleeding helped a little, but it's still necessary to depress the pedal all the way to the floor mat. I'm OK with this but my spouse finds it annoyingly uncomfortable to the point that she spends as much time letting me know as she does driving the truck. The slave is not adjustable so I plan to measure very carefully and shim if necessary.
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Old 05-22-2013, 03:14 PM   #11
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Quote:
Originally Posted by mr duck View Post
Thanks guys. It looks like I'll be "pulling the transmission and replacing some parts". Because everything is inside the bell housing, including the coaxial slave, I'll replace the disk, bearing, pressure plate, and slave. May as well do the shifter bushings at the same time. New fluid and bleeding helped a little, but it's still necessary to depress the pedal all the way to the floor mat. I'm OK with this but my spouse finds it annoyingly uncomfortable to the point that she spends as much time letting me know as she does driving the truck. The slave is not adjustable so I plan to measure very carefully and shim if necessary.
You shouldn't need to shim anything. The release bearing will move back as the linings wear and the fingers extend. Excess fluid goes back through the master and into the reservoir. It's completely self adjusting.
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Old 05-22-2013, 03:27 PM   #12
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If you have excessive pedal travel but are not losing fluid, you either have a bad clutch master cylinder, poorly adjusted clutch pedal, or air in the line.

Judging from what I have read, at this point you do not need the trouble or expense of replacing the clutch.
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Old 05-22-2013, 03:47 PM   #13
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Three years later?

You started this thread 3 years ago. Did you just deal with the pedal to the floor that long or did the problem clear up?

As was stated, you probably have air in your system or the rubber plunger/seals inside the master cyl have worn out and are not pushing the fluid completely.

Bleed first. If that doesn't work , take a look at the master cyl internals.

You could also adjust the pedal just to buy you some time.
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