Ashcroft instalation

INSTALLATION GUIDE

We have separated our installation guide into four main categories.

1)              Installing your locker into the differential,

Remove the stock diff centre but be sure to mark the bearing caps so they are refitted on the correct side,

Drill are tap the diff housing ¼ BSP here :

Fit the crown wheel to the new centre, install locker and set preload and backlash as per factory specs.  There are two lengths of Journal end cap bolts used, 50mm for the non dowelled cap and 60mm for the dowelled cap, select the bolt 5mm longer than stock to fit the cylinder locking tab so that the tab stops the cylinder rotating, see below.

2)              Installing the Air Lines

Once the air compressor is mounted use the 1/8” BSP M/M nipple to either of the solenoid side ports, use the 1/8” BSP plug to blank the other side port. Fit the 1/8” tapered 90 deg push fit elbow to the solenoid end port.

Fit the brass 1/8” parallel 90 deg elbow compression fitting to the locker cylinder and fit the copper pipe to this fitting, pass the other end through the tapped hole in the diff housing. We would suggest fitting the pipe like this to allow some flex in the pipe :

Once the copper pipe is through the taped hole, fit the brass adapter nut from the outside and mark the pipe flush with the brass nut, remove nut and cut pipe, refit nut, fit small ‘O’ ring, fit 1/8” parallel 90 deg push fit elbow. Fit air line between this push fit connector and the one on the solenoid.

 3)              Installing the switches and electrical connections

Rear switch

Pin 8, dash illumination, on ARB loom is blue/white (shows red bar when side light on)

Pin 7, ground, on ARB loom use black (which one)

Pin 2, feed, on ARB loom use red

Pin 3, to rear solenoid, on ARB loom use yellow

Front switch

Pin 8, dash illumination, on ARB loom is blue/white (shows red bar when side lights on)

Pin 7, ground, on ARB loom use black (which one)

Pin 2, feed, on ARB loom use yellow

Pin 3, to front solenoid, on ARB loom use green

Use the 2 parallel pins on the solenoid, one to earth, one to switch.

4)              Final testing

Handbrake off, Centre diff unlocked, mainbox in neutral, Jack up one wheel, the wheel should spin freely,

Switch the air compressor on, allow it to run up to pressure,

Select the locker whilst spinning the wheel and it should stop dead.

Switch the locker off and the wheel should spin freely again.