Pontiac TRANS AM 1977 Service Manual page 916

7A1-16 1977 PONTIAC SERVICE MANUAL
D. Throttle lever &
bracket assembly
1. Binding or unhooked.
2. Wrong throttle lever to
cable link.
E. Control valve a m . , 1. 2-3 shift valve or 2-3
&
spacer plate throttle valve stuck in the
downshift position.
2. "Direct Clutch
Feed" orifice in spacer
plate plugged.
3. Valve body spacer plate or
gaskets, leaking, damaged,
or incorrectly installed.
4. Wrong spacer plate to
valve body gaskets.
F. Case 1. Porosity in case channels.
2. Orifice cup plug in inter-
mediate servo bore area
in case missing.
- - -- -
G. Pump Assembly 1. Channels in pump plugged
or leaking.
2. Check ball missing or
mislocated.
3. Pump to case gasket off
location.
4. Rear oil seal ring on
pump cover leaking, or missing.
5. Cup plug missing.
H.
Direct Clutch
1. Oil seals missing or damaged
on piston.
2. Direct clutch piston or
housing cracked.
3. Direct clutch plates damaged
or missing.
4. Direct clutch backing plate
snap ring out of groove.
5. Wrong piston apply ring.
6. Check ball in housing and/
or piston missing or damaged.
7. Direct clutch release spring
guide mislocated, preventing
check ball in the piston from
seating, causing plates to
burn.
DRIVE
IN
NEUTRAL A. Manual Linkage
1. Misadjusted or disconnected.
B. Forward Clutch
1. Clutch does not release.
Exhaust check ball sticking.
Plates burned together.
C. Pump
1. Cross leakage in pump passages.