By far the best way to bleed your clutch hydralic system
12-16-2005, 12:47 AM
#1
By far the best way to bleed your clutch hydralic system I found this GM TSB while working on my S10 that I have swapped to a LS1 and thought it would be cool to share with everybody. These procedures apply to just about everything GM makes now. Instead of that tool they talk about I just used a tappered tip and stuck it down in the actuator hole in the reservor and having alittle brake fluid in the bottom of the vaccum container this worked out good for me, you just have to make sure that when you let the vacuum off the system it doesn't pull air back into it. 10 minutes and clutch was done didn't even need to break that damned bleeder loose. I recommend the mods make this a sticky.
M/T - Improved Hydraulic Clutch Bleeding Procedure
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 01-07-31-002A
Date: September, 2004
INFORMATION
Subject:
Improved Bleeding Procedure for Hydraulic Clutch Release System
Models:
2005 and Prior Passenger Cars and Light Duty Trucks
2005 and Prior Chevrolet and GMC 6-7F T-Series Medium Duty Tilt Cab Models
2005 and Prior Isuzu F-Series Medium Duty Tilt Cab Models
This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 01-07-31-002 (Section 07 - Transmission/Transaxle).
This bulletin is being issued to inform dealers of an improved procedure to aid in the ease of bleeding the clutch hydraulic system for the above listed vehicles. This procedure can be used anytime air is introduced into the hydraulic system. Following this procedure may also reduce the number of unnecessary parts replaced for low clutch pedal reserve and high shift effort.
1. Verify that all the lines and fittings are dry and secure.
2. Clean the dirt and grease from the reservoir cap in order to ensure that no foreign substances enter the system.
3. Remove the reservoir cap.
4. Fill the reservoir to the proper level with the required fluid.
5. Attach the J 43485 (Adapter) to the J 35555 (Mity Vac) or equivalent.
Important: Brake fluid will deteriorate the rubber on J 43485. Use a clean shop cloth to wipe away the fluid after each use.
6. Place and hold the adapter on the reservoir filler neck to ensure a tight fit. In some cases, the adapter will fit into the reservoir opening.
7. Apply a vacuum of 51-68 kPa (15-20 hg) and remove the adapter.
8. Refill the reservoir to the proper level.
9. Repeat Steps 6 and 7.
10. If needed, refill the reservoir and continue to pull a vacuum until no more bubbles can be seen in the reservoir or until the fluid level no longer drops.
Caution: The vehicle will move if started in gear before the Actuator Cylinder is refilled and operational Start the vehicle the first time in neutral to help prevent personal injury from vehicle movement and see it the transmission will shift easily into gear.
11. Pump clutch pedal until firm (to refill actuator cylinder).
12. Add additional fluid if needed.
13. Test drive vehicle to ensure proper operation.
M/T - Improved Hydraulic Clutch Bleeding Procedure
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 01-07-31-002A
Date: September, 2004
INFORMATION
Subject:
Improved Bleeding Procedure for Hydraulic Clutch Release System
Models:
2005 and Prior Passenger Cars and Light Duty Trucks
2005 and Prior Chevrolet and GMC 6-7F T-Series Medium Duty Tilt Cab Models
2005 and Prior Isuzu F-Series Medium Duty Tilt Cab Models
This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 01-07-31-002 (Section 07 - Transmission/Transaxle).
This bulletin is being issued to inform dealers of an improved procedure to aid in the ease of bleeding the clutch hydraulic system for the above listed vehicles. This procedure can be used anytime air is introduced into the hydraulic system. Following this procedure may also reduce the number of unnecessary parts replaced for low clutch pedal reserve and high shift effort.
1. Verify that all the lines and fittings are dry and secure.
2. Clean the dirt and grease from the reservoir cap in order to ensure that no foreign substances enter the system.
3. Remove the reservoir cap.
4. Fill the reservoir to the proper level with the required fluid.
5. Attach the J 43485 (Adapter) to the J 35555 (Mity Vac) or equivalent.
Important: Brake fluid will deteriorate the rubber on J 43485. Use a clean shop cloth to wipe away the fluid after each use.
6. Place and hold the adapter on the reservoir filler neck to ensure a tight fit. In some cases, the adapter will fit into the reservoir opening.
7. Apply a vacuum of 51-68 kPa (15-20 hg) and remove the adapter.
8. Refill the reservoir to the proper level.
9. Repeat Steps 6 and 7.
10. If needed, refill the reservoir and continue to pull a vacuum until no more bubbles can be seen in the reservoir or until the fluid level no longer drops.
Caution: The vehicle will move if started in gear before the Actuator Cylinder is refilled and operational Start the vehicle the first time in neutral to help prevent personal injury from vehicle movement and see it the transmission will shift easily into gear.
11. Pump clutch pedal until firm (to refill actuator cylinder).
12. Add additional fluid if needed.
13. Test drive vehicle to ensure proper operation.
