Workshop Manuals Factory service & repair Land Rover
Land Rover Defender 90 Workshop Manual (NAS)17 · Steering
17 · Steering & suspension

Power steering system - grunt

Make
Land Rover
Model
Defender 90 Workshop Manual (NAS)
Section
Fault diagnosis › Power steering system - grunt
SteeringPower steering system - grunt

POWER STEERING SYSTEM - EXCESSIVE NOISE 13. Is noise an intermittent "grunt"?

  1. Is fluid level correct? YES - go to 3. NO - Refill or drain to correct level. Bleed 14. Is it a clunking noise? system, check for leaks See Repair, Power Steering System - Bleed.
  2. Is problem resolved? YES - end 15. Does noise remain? NO - continue.
  3. Is pressure hose from pump to box touching body in a hard foul condition? YES - reroute hose away from body. NO - go to 5.

POWER STEERING SYSTEM - GRUNT

  1. Does noise remain?

Steering box grunts intermittently when turning

YES - continue.

from lock to lock:

NO - end.

  1. Is noise a whistle or hiss on full lock? YES - noise is not a fault unless excessive. Compare with other vehicles NO - go to 8.
  2. Is noise excessive? YES - continue. NO - end.
  3. Change steering box and/or pump.
  4. Is noise a squeal on full lock? YES - checkdrive belt tension See ELECTRICAL, Repair, Auxiliary drive Belt. NO - go to 10.
  5. Does squeal remain? YES - drive belt contaminated, change belt See ELECTRICAL, Repair, Auxiliary drive belt. NO - end.
  6. Is noise a continuous moan? YES - bleed PAS system See Repair, Power Steering System - Bleed. NO - go to 13.
  7. Does moan remain? YES - do figure 8 manoeuvres. NO - end.
  8. Does moan remain? YES - continue NO - end.

YES - See Power Steering System - Grunt. NO - continue.

YES - check drive belt tension See ELECTRICAL, Repair, Auxiliary drive Belt. NO - contact local technical office.

YES - Suspect suspension or drive train. NO - end.

  1. Is fluid level correct? YES - go to 3. NO - refill or drain to correct level. Bleed system, check for leaks See Repair, Power Steering System - Bleed.
  2. Does grunt remain? YES - continue NO - end.
  3. Is correct low pressure hose, steering box to reservoir fitted? YES - go to 5. NO - Fit correct hose.
  4. Does grunt remain? YES - continue NO - end.
  5. Purge box by doing figure 8 manoeuvres e.g. on car park, followed by 10 minutes normal road use.
  6. Does grunt remain? YES - Contact local technical office NO - end.

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