Arb RD85 Manuel d'utilisateur télécharger pdf (Page 27)

4 Installing the Air Locker

4.12 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 (ARB part # ALTG01).

Once 620 KPA [90 PSI] is reached close the valve,

disconnect the air hose, and watch to see if there is any

drop in pressure. If so, this will indicate an air leak.

(Fig.14.)

Figure 14.

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 the seal

housing assembly and examine the O-rings. Be very careful with

the O-rings and check for defects, damage, wear, or presence of

foreign material in the O-ring grooves. Replace if necessary.

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Arb RD85 Manuel d'utilisateur Page 27