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Home >> Land Rover >> 1990 >> Range Rover County >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Electronic Air Suspension - 3.9L & 4.2L >> Trouble Shooting >> Leak Test Procedure

Leak Test Procedure

If an air leak is suspected, use of a proprietary leak detection spray GOTEC LDS (STC 1090), or equivalent, is recommended. If this spray is not available, a substitute spray must contain a corrosion inhibitor, and must not cause damage to paintwork, plastics, metals and plastic pipes. This procedure should also be used where pneumatic components have been disturbed.

  1. Ensure system is fully pressurized.
  2. Clean around area of suspected leak.
  3. Using manufacturer's instructions, spray around all component joints and air springs, working systematically until source of leak is found.
  4. If a component, e.g. air spring, air dryer is leaking, rectify by fitting a new component.
  5. If an air pipe connection is leaking, cut 5 mm off end of pipe. Fit new collet. See AIR PIPE CONNECTION COLLET & "O" RINGS  under REMOVAL & INSTALLATION.
  6. Reinflate system, carry out leak test.