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Re: bleeding hydraulic clutch
Well you will need some help make sure the resivor is full and have someone hold the clutch pedal to the floor and crack the bleeder on the slave cyl. and close after the spert of fluid comes out. when the screw is closed have the person in the drivers seat slowly let up and push down 3 times and hold down and bleed one more time. refill your resivor and repete if you dont think the peddal is quite right. just dont run it out of fluid good luck it realy isnt that hard. later paul
First you need a second person to pump the clutch pedal while you crawl under the truck to loosen the bleed valve which is located just above the line where it goes into the tranny. Have them alternate between pumping and holding the clutch pedal down until it comes back and holds pressure. That's how you'll know there's no more air in the line.
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The procedure for bleeding all hydraulic systems is similar.
Bear in mind that hydraulic fluid is a liquid so any bubbles or air voids should end up slowly rising to the high points. That's why pressure bleeding tends to be more effective.
1) Fill the reservoir
2) Locate the bleed valve on the slave cylinder.
3) Place the correct size box end wrench on the bleed valve.
4) I like to attach a clear plastic drain hose to direct the waste fluid to a container.
5) Have a helper pump the clutch pedal several times and then continue to hold it down.
6) "crack" the bleed valve allowing the pedal to fully depress. Close the valve before allowing the helper to release the pedal.
7) Repeat as necessary until all trapped air is expelled and the clutch pedal is not "spongy" when depressed.
8) Top up the fluid as required throughout and when this procedure is completed.
Hope this helps.
Bleeding the hydraulics will not improve the friction drive of the clutch in any way,your clutch drive plate is worn out and needs replacing. To bleed the hydraulic line ,make sure that the master cylinder is fully topped up,pump clutch lever several times then tie ,using a zip tie the clutch lever all the way to the handle bar,gently open the bleed screw and await fluid to start dripping from the bleed screw, this may take an hour or two but it will eventually bleed itself,once 25% of the fluid has discharged from the the master cylinder tighten up the bleed screw and this is the easiest DIY way of bleeding a hydraulic system, without a pressure bleeder.
This all depends if this is a hydraulic clutch or if its cable operated, you can only bleed hydraulic clutches, to bleed it you would bleed at the ******, you will see the bleeder screw on the slave cylinder that operates the clutch fork.
HYDRAULIC SYSTEM BLEEDING
Do not use fluid which has been bled from a system to fill the reservoir as it may be aerated, have too much moisture content or possibly be contaminated. Clean the dirt and grease from the cap to ensure that no foreign substances enter the system. It is also important to maintain the fluid level in the clutch reservoir to the top step with hydraulic clutch fluid Hydraulic Clutch Fluid GM P/N 12345347 or equivalent.
Attach a hose to the bleeder screw on the clutch actuator assembly and submerge the other end of the hose in a container of hydraulic clutch fluid.
Depress the clutch pedal slowly and hold.
Loosen the bleeder screw to purge air.
Tighten the bleeder screw to 18 inch lbs. (2 Nm).
Let up on the clutch pedal.
Repeat Steps 2 through 5 until all air is purged from the system.
Fill the reservoir to the top step with hydraulic clutch fluid.
Repeat this bleeding procedure if there is a grinding noise during the clutch spin down procedure.
Hydraulic Clutch System BLEEDING
The clutch system can be bled using a pressure bleeder. Follow the instructions that come with the pressure bleeder for the proper pressure bleeding procedure. The maximum line pressure while pressure bleeding must not exceed 36 psi (248 kPa).
NOTE: To bleed a clutch manually requires the assistance of a second person, a section of hose that is compatible with brake fluid (preferably clear) and fits the slave cylinder bleed screw snugly and a container to catch the fluid that is bled through the system. As brake hydraulic fluid easily absorbs moisture, always use fresh fluid when bleeding a hydraulic system.
Before servicing the vehicle, refer to the precautions in the beginning of this section.
To bleed the system perform the following:
Top off the hydraulic fluid reservoir using a fluid that meets the standards of the vehicle's hydraulic system.
Open the clutch slave cylinder bleed screw and press the clutch pedal to the floor and hold the pedal down.
Close the clutch slave cylinder bleed screw.
Release the clutch pedal.
Check the hydraulic fluid level and top off as necessary.
Repeat the above steps until the discharged fluid is clean and no air bubbles appear during the bleeding process.