Copyright © 1996 General Motors Corp. ix
AT 500, 1500 SERIES AUTOMATIC TRANSMISSIONS
Paragraph Page
Paragraph Page
6–17. CLUTCH STACK MEASUREMENT
a. Assembly Line . . . . . . . . . . . . . . . . . . . .6–37
b. Forward Clutch. . . . . . . . . . . . . . . . . . . .6–37
c. Fourth Clutch . . . . . . . . . . . . . . . . . . . . 6–37
d. Third Clutch . . . . . . . . . . . . . . . . . . . . . .6–38
e. Second Clutch. . . . . . . . . . . . . . . . . . . . .6–38
f. First Clutch . . . . . . . . . . . . . . . . . . . . . . 6–39
Section 7. ASSEMBLY OF TRANSMISSION
7–1. SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–1
7–2. GENERAL INFORMATION FOR FINAL ASSEMBLY
7–1
7–3. SELECTIVE COMPONENTS
a. Establish Clearances. . . . . . . . . . . . . . . . .7–1
b. Clutch Plate Stack Measurements . . . . . .7–1
7–4. INSTALLATION OF FIRST CLUTCH
AND GEARING
a. First Clutch . . . . . . . . . . . . . . . . . . . . . . . .7–1
b. First Clutch Running Clearance. . . . . . . .7–2
c. Planetary Gear Unit . . . . . . . . . . . . . . . . .7–4
7–5. INSTALLATION OF SECOND CLUTCH
AND CENTER SUPPORT
a. Second Clutch Pack . . . . . . . . . . . . . . . . .7–4
b. Center Support and Pistons . . . . . . . . . . .7–5
7–6. INSTALLATION OF REAR BEARING
SPACER AND FOURTH CLUTCH
a. Selecting, Installing Rear Bearing
Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–6
b. Fourth Clutch . . . . . . . . . . . . . . . . . . . . . .7–8
7–7. INSTALLATION OF THIRD AND
FORWARD CLUTCHES
a. Third Clutch . . . . . . . . . . . . . . . . . . . . . . .7–9
b. Retarder Housing Assembly. . . . . . . . . . .7–9
c. Forward Clutch and Turbine Shaft
Assembly . . . . . . . . . . . . . . . . . . . . . . . .7–10
7–8. INSTALLATION OF OIL PUMP
ASSEMBLY
a. Selection of Front Thrust Washer . . . . .7–11
b. Pump Assembly . . . . . . . . . . . . . . . . . . .7–12
7–9. INSTALLATION OF OUTPUT
SHAFT OIL SEAL. . . . . . . . . . . . . . . . . . . .7–13
7–10. INSTALLATION OF MAIN CONTROL
VALVE BODY, OIL FILTER, AND
OIL PAN
a. Main Control Valve Body . . . . . . . . . . 7–13
b. Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–15
c. Oil Pan . . . . . . . . . . . . . . . . . . . . . . . . . 7–15
7–11. INSTALLATION OF GOVERNOR,
MODULATOR, AND TORQUE
CONVERTER
a. Governor. . . . . . . . . . . . . . . . . . . . . . . . 7–16
b. Vacuum Modulator. . . . . . . . . . . . . . . . 7–16
c. Torque Converter Assembly. . . . . . . . . 7–17
7–12. REMOVAL OF TRANSMISSION
FROM OVERHAUL STAND AND
INSTALLATION OF EXTERNAL
COMPONENTS
a. Supporting Transmission . . . . . . . . . . . 7–18
b. Determining Third Clutch Clearance. . 7–18
c. Installing Retarder Valve Body . . . . . . 7–18
d. Installing PTO Cover . . . . . . . . . . . . . . 7–18
e. Installing Neutral Start Switch,
Speedometer Components . . . . . . . . . . 7–18
f. Shift Lever Installation. . . . . . . . . . . . . 7–18
7–13. CHECKING AND ADJUSTING
SHIFT POINTS . . . . . . . . . . . . . . . . . . . . . 7–19
7–14. POWER TAKEOFF COMPONENTS
(Models Without Retarder)
a. Existing Installation . . . . . . . . . . . . . . . 7–19
b. Determining Turbine-Driven PTO
Backlash . . . . . . . . . . . . . . . . . . . . . . . . 7–19
c. New Installation . . . . . . . . . . . . . . . . . . 7–19
Section 8. WEAR LIMITS AND
SPRING DATA
8–1. WEAR LIMIT DATA . . . . . . . . . . . . . . . . . 8–1
8–2. SPRING DATA . . . . . . . . . . . . . . . . . . . . . . 8–1
Section 9. CUSTOMER SERVICE
9–1. OWNER ASSISTANCE . . . . . . . . . . . . . . . 9–1
9–2. SERVICE LITERATURE . . . . . . . . . . . . . . 9–2
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