Arb RD138 Manuel d'utilisateur télécharger pdf (Page 24)

3 Installing the Air Locker

3.9 Bench Testing the Air Locker

c To test the Air Locker, when 620kPa [90 PSI] shop air is applied to

the seal housing tube, the Air Locker should engage.

c Check all fittings and the seal housing for air leaks.

c Rotate the differential carrier by turning the pinion flange whilst

applying air pressure.

NOTE : An accurate way to test for air leaks is to fit a shut-off

valve to an air pressure gauge (Available as ARB part

#ALTG01). Charge with shop air until 620 KPA [90 PSI]

is reached, shut the valve off, disconnect the air hose,

and watch to see if there is any drop in pressure. Any

gradual pressure drop indicates an air leak. (Fig.19.)

Figure 19.

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

onto the bulkhead air fitting. Bubbles should appear at any leak

points.

NOTE : Do not spray this soapy mixture inside the differential.

c Check that leaky fittings have been adequately tightened.

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

persists.

c If a leak is found at the seal housing, carefully remove and refit. Be

very careful with the O-rings and check they have not been

damaged during installation.

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Arb RD138 Manuel d'utilisateur Page 24