Steering, Checking For Leaks
Following installation operations and with no hydraulic fluid in the expansion tank, the steering system must be checked for leaks.
-- Place the vehicle on a hoist. Refer to RAISING AND LOWERING WITH OPEN AND CLOSED AIR SUSPENSION SYSTEM .
-- Remove the noise insulation. Refer to Noise Insulation, Removing and Installing .
-- Start engine.
-- Turn steering wheel in both directions to full lock and hold briefly.
This builds up the maximum possible pressure.
To avoid damage to pump, steering wheel must not be held at stop longer than 10 seconds during this test.
In this position, the following components must be checked for leaks.
- Seal ring for steering pinion at the power steering gear valve housing.
- All line connections.
- All wiring connections.
- Power steering pump
- Seal rings for steering rack.
This test can only be performed with bellows slid back.
-- Open the spring-type hose clamp and boot hose clamp.
-- Push back the boot.
If fluid is visible in power steering gear housing and/or in boots, power steering gear must be replaced.
-- Lower the vehicle onto its wheels. Refer to RAISING AND LOWERING WITH OPEN AND CLOSED AIR SUSPENSION SYSTEM .