P/S - Shudder During Static or Low Speed Turns
Bulletin: 92-3-18Date: July '92
Ref. No.: 92-247-3
Corp. Ref. No.: 133208R
SUBJECT:
POWER STEERING SHUDDER (USE INSPECTION/ANALYSIS CHART)
MODELS AFFECTED:
1989-92 CENTURY WITH 3300 ENGINE (VIN CODE N)
THIS BULLETIN IS BEING REVISED TO ADD MODEL YEAR 1992 AND BREAKPOINTS FOR STEPS A AND B. PLEASE DISCARD PREVIOUS BULLETIN 91-3-16.
CONDITION:
Some 1989-92 Century models with 3300 V6 engines (RPO LG7) may exhibit power steering shudder, a pulsing or resonating disturbance that the vehicle operator may hear and feel through the body structure and steering wheel. This condition is most apparent at low engine RPM and/or while making low speed turns.
CAUSE:
A combination of power steering pump pressure pulses and engine firing frequency generating a disturbance transmitted through the body structure.
CORRECTION:
Utilizing the Inspection/Analysis Chart shown to determine which of the power steering or engine components indicated have NOT been previously installed on the suspect vehicle.
CRANKSHAFT BALANCER KIT INSTALLATION PROCEDURE:
Remove or Disconnect
1. Negative battery cable
2. Serpentine belt
3. Raise car and suitably support, see Section 0A
4. Right front wheel and tire assembly
5. Inner fender splash shield (right side)
6. Torque converter cover
7. Hold flywheel with tool J-37096
8. Balancer bolt
9. Crankshaft balancer
IMPORTANT:
The balancer is serviced as an assembly. Do not attempt to separate pulley from balancer hub.
Install or Connect
1. Crankshaft balancer
^ Lubricate seal surface with engine oil
2. Balancer bolt and washer
^ Hold flywheel with tool J-37096
^ Balancer bolt to 140 N-m (103 lbs.ft.)
- Loosen bolt to finger tight
- Utilizing tool J-36660, retorque to 150 N-m (110 lbs.ft.)
plus 56 degrees
3. Inner fender splash shield
4. Right front wheel and tire assembly
5. Torque converter cover
6. Lower car
7. Serpentine belt
8. Negative battery cable
Note:
After installation of either of the hose assemblies and/or pump, it is essential that the system be properly bled following the procedure in the 1992 Service Manual.
WARRANTY INFORMATION:
Labor Operation Number:
T1743
Labor Time:
Step "A" - 1.2 Hours
Steps "A and B" - 1.3 Hours
Steps "A and C" - 1.6 Hours
Steps "A, B and C" - 1.7 Hours
Steps "A, C and D" - 2.0 Hours
Steps "A, B, C, and D" - 2.1 Hours