Page 111 - Hydra-matic 6 Speed RWD Technician's Guide (October 2005)

PARK
(Engine Running)

The following conditions and component problems could happen
in any gear range, and are only some of the possibilities recom-
mended to diagnose hydraulic problems. Always refer to the
appropriate vehicle platform service manual when diagnosing
specific concerns.
HIGH LINE PRESSURE
• Pressure Regulator Valve (233), or Isolator
Valve (236)
- Stuck, damaged

• Pump Slide (212)
- Stuck

• Line Pressure Control Solenoid
- Loose connector
- Commanded/failed LOW (ON)

LOW LINE PRESSURE

• Pressure Regulator Valve (233), Pressure
Regulator Valve Outer Spring (234), Pressure
Regulator Valve Inner Spring (235) or Isolator
Valve (236)
- Stuck, damaged broken

• Fluid Pump Cover (219)
- Cross channel leak at converter housing to
Cover or cover to case

• Fluid Pump Seal (5)
- Damaged

• Pump Valve Bores
- Excessive valve clearance due to wear

• Upper Control Valve Body (321)
- Cross channel leaks
- Cross valve land leaks

• Lower Control Valve Body (351)
- Cross channel leaks
- Cross valve land leaks

• Gasket/Spacer Plate
- Damaged
- Missing
· Line Pressure Control Solenoid
- Commanded/failed HIGH (OFF)

• Actuator Feed Limit Valve (325), Spring (354) or
Retainer (323)
- Stuck, damaged, broken

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW
SOL SOL PC PC PC PC 1-2-3-4 3-5 REV 4-5-6 2-6 & REV CLUTCH
1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH SPRAG
ON ON OFF OFF OFF ON APPLIED*
*APPLIED WITH NO LOAD
76A