Arb RD129 Manuel d'utilisateur télécharger pdf (Page 34)

7 Testing & Final Assembly

7.1 Leak Testing

c With the vehicle parked and the engine off, turn the compressor on

and wait until the air system is fully charged.

NOTE : With the Air Locker(s) disengaged, the air source (i.e.,

compressor) should not have to recharge over time.

Intermittent recharging without Air Locker use usually

indicates a leak at the solenoid fittings or at the

compressor tank O-ring seal.

c Actuate the Air Locker(s).

c The compressor should not come on again for a period of at least

15min. Air system recharging within that time period would indicate

that a leak is present in the system.

NOTE : If an alternate air source (e.g., an air cylinder or a belt

driven air pump) is used instead of a compressor, the

air system will have to be leak tested with a pressure

gauge and a shut-off valve in series before the

solenoid input.

c If a leak is found to be present, spray a soap and water mixture

onto all air fittings in the system while the compressor is fully

charged. Bubbles should appear at any leak points.

c Check that leaky fittings have been adequately tightened.

c Disassemble, clean threads, and reapply thread sealant if leaking

persists.

7.2 Testing the Air Locker Actuation

To test that your air system, electrical system, and your Air Locker

differential is functioning correctly:

c Support the vehicle such that the wheels are free to rotate (e.g., on

axle stands, a chassis hoist, etc.)

c Leave the parking brake off, the transmission in neutral, and the Air

Locker switch ‘OFF’.

c Turn the ignition to the ‘ON’ position (leaving the motor off). The

large illuminating symbol on the Air Locker switch cover should be

‘OFF’.

c Turn the compressor (or alternate air source) on to charge the air

supply up to its maximum pressure.

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Arb RD129 Manuel d'utilisateur Page 34