FixVault

Repair and Diagnosis: Transmission: Clutches: Description

The hydraulic clutch consists of a clutch plate, pressure plate and pilot bearing. Hydraulic clutch has a master cylinder with a reservoir. Clutch pedal moves master cylinder push rod, and a slave (actuator) cylinder at bellhousing moves clutch fork and release bearing. See Fig 1.

Hydraulic clutch system provides automatic clutch adjustment. No adjustment of clutch linkage or pedal position is required.

Fig 1: Exploded View Of Clutch Assembly & Pilot Bearing (Typical)
G31613Courtesy of GENERAL MOTORS CORP.

On "S" and "T" series vehicles, pickup has a coupling between master and actuator while others have the single unit assembly. See Fig 2 and Fig 3.

No service is possible to individual components of master cylinder assembly or actuator cylinder assembly. Complete cylinder units must be installed when servicing hydraulic clutch.

Fig 2: Identifying "S" & "T" Series Clutch Hydraulic System (Except Pickup With 2.2L Engine)
G94I65431Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying "S" Series Pickup With 2.2L Engine
G94J65432Courtesy of GENERAL MOTORS CORP.
TRANSMISSION APPLICATION

Vehicle Model Transmission Model (RPO)
Jimmy, Sonoma & "S" & "T" Series
Blazer & Pickup Borg-Warner T5 77mm 5-Speed (MW1) & NVG 5LM60 85mm 5-Speed O/D (MY2)