GMC 1976 ZEO 6083 Maintenance Manual page 464

7- 1 6
TRANSMISSION
FIRM SHIFT: QUICK HARSH AND
GENERALLY AGGRESSIVE, OR DELAYED
CHECK i CORRECT VACUUM
RECHECK SHIFT FEEL
WITH BRAKES APPLIED,
CHECK LINE PRESSURE
IN DRIVE AT 1000 RPM
CHECK FOR CORRECT
NUMBER AND CORRECT
LOCATION OF CHECK BALLS
CHECK FOR PROPER
NO . AND TYPE
OF PLATES
1-2 SHIFT COMPLAINT
HIGH
CHECK FOR CAUSE OF HIGH
PRESSURE SEE PAGE 20
CHECK ENGINE TUNE
WITH BRAKES APPLIED,
CHECK LINE PRESSURE
IN DRIVE AT 1000 RPM
1-2 Shift Complaint
CHECK VACUUM SYSTEM FOR RESPONSE AT
MODULATOR-VAC. SHOULD VARY AND
RESPOND RAPIDLY TO QUICK CHANGES IN
THROTTLE OPENINGS
CHECK 1-2 ACCUM. VALVE SYSTEM
CHECK FRONT ACCUM . PISTON B OIL RINGS
CHECK CENTER SUPPORT BOLT TORQUE AND
OK
SUPPORT LOOSENESS. AIR
FOR LEAKAGE AT SEALS
CHECK INT . CLUTCH
EXCESSIVE
NORMAL
REMOVE TRANS.
T
INSPECT INT. CLUTCH
IF BURNED CHECK REMOVE AND INSPECT INT. CLUTCH AND CHECK INT. CLUTCH FOR PROPER TYPE
CAUSE CENTER SUPPORT-CHECK CASE TO SUPPORT CLUTCH PLATES AND NUMBER OF RELEASE
FACE. CHECK FOR MISSING ORIFICE CUP PLUG SPRINGS OR COCKED RELEASE SPRINGS-
IN CENTER SUPPORT. CHECK INT. CLUTCH
PISTON FOR FLATNESS