Bulletin No.: 01-07-31-002B PLEASE RATE ME as this is ALL info you need More? Email me at rejakwilson @aol.com
Date: November 01, 2006
Improved Bleeding Procedure for Hydraulic Clutch
2007 and Prior GM Passenger Cars and Light Duty Trucks (including Saturn)
2007 and Prior Chevrolet and GMC 6-7F T-Series Medium Duty Tilt Cab Models
2007 and Prior Isuzu F-Series Medium Duty Tilt Cab Models
2006-2007 HUMMER H3
This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 01-07-31-002A (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.
Verify that all the lines and fittings are dry and secure.
Clean the dirt and grease from the reservoir cap in order to ensure that no foreign substances enter the system.
Remove the reservoir cap.
Fill the reservoir to the proper level with the required fluid.
Attach the J 43485 (Adapter) to the J 35555 (Mity Vac), or equivalent.
Brake fluid will deteriorate the rubber on J 43485. Use a clean shop cloth to wipe away the fluid after each use.
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.
Apply a vacuum of 51-68 kPa (15-20 hg) and remove the adapter.
Refill the reservoir to the proper level.
Repeat Steps 6 and 7.
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.
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 if the transmission will shift easily into gear.
Pump the clutch pedal until firm (to refill actuator cylinder).
Add additional fluid if needed.
Test drive vehicle to ensure proper operation.
The principal parts of the clutch
system are the driving members, the driven member, and the hydraulic system. The clutch housing is part of the manual transaxle assembly.Driving Members
The driving members consist of two flat surfaces machined to a smooth finish. One of these is the rear face of the engine flywheel
, and the other is the front face of the clutch cover assembly.Driven Members
The driven member is the clutch disc
. The clutch disc is splined to the input shaft
. The clutch disc slides on the splines to provide clutch
disengagement and engagement.
The clutch disc
is held in contact between the flywheel
and the clutch cover assembly by the pressure of a diaphragm spring in the clutch cover assembly.Hydraulic System
release system consists of a clutch master cylinder
, remote reservoir, tubing and an clutch actuator cylinder assembly. The clutch master cylinder is mounted to the front of the dash and is controlled by a pushrod connected to the clutch pedal. The clutch actuator cylinder assembly is mounted inside the clutch housing. Tubing connects the clutch master cylinder to the clutch actuator cylinder assembly.