5000CS Turbo L5-2226cc 2.22L SOHC Turbo (MC) (1987)
Power Steering Pump: All Technical Service Bulletins
Central Hydraulic System - Vibration/Noise
Number:
Group:
88-02
48
January 15, 1988
Brakes - Steering
Applies To:
A11 5000 Models 1984-1987
Subject:
Central Hydraulic System - Vibration/Noise
1.
Noise audible outside vehicle - rattle/rapping
Cause:
Insufficient belt tension. Hydraulic pulsation and operating noise of pump.
Production Change:
Modified hydraulic pump (red tag).
As of:
May 1985 VIN: 44_F_119454
Service Solution:
Increase belt tension until noise is eliminated.
NOTE:
On silver tag pumps and 5 cylinder engines only: Increase belt tension even if tension seems sufficient. Pump bearings not damaged by higher
belt tension.
2.
Noise audible inside vehicle - buzz/pulsation at idle
Cause:
Hydraulic pulsation of lines and accumulator.
Production Change:
Modified accumulator, damper in return line.
As of:
May 1987 VIN: 44_H_117300
Service Solution:
Replace damper hose, P/N 443 612 083C, if kinked or missing. Replace accumulator, P/N 857 612 061 B, if multiple pumping of brake pedal reduces
noise.
3.
Noise audible inside vehicle after right-hand turns - rattle, pulsating
Cause:
Tolerance deficiency in steering rack.
Production Change:
Change in preparation.