BENDIX A2LS Manuel - Page 11

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DUST BOOT

FIGURE 21 - WHEEL CYLINDER

SCREW ON FULLY AND UNSCREW ONE

COMPLETE TURN

FIGURE 22 - PISTON ADJUSTER

insert the assembly into the bore of the housing until it

engages the wedge cage and rollers, Figure 16. Install

and tighten the stop pin to 16 ft. lbs. (23,3 N.m).

7. Fit the dust boot to the input tappet/piston, lubricate the

piston seal with new DOT 4 brake fluid and install the

seal onto the piston with the lip facing inward, Figure

20. Grease the inside of the dust boot with the grease

supplied and install the input tappet/piston assembly into

the housing bore until it rests on the roller tappet/piston.

Fit the dust boot to the end of the housing.

8. Turn the expander housing in the vise to enable the

wedge return spring to be installed. Locate the spring

ferrule on the spring and compress the spring over the

wedge stem until the pin can be inserted, Figure 16.

Release the spring carefully.

Note: Push in wedge assembly slightly and center it inside

the housing.

9. Install the bleed screw.

10. Install the expander to the backing plate (dirtshield) using

a new gasket, Figure 1, and secure in place with fixing

bolts.

11. Refer to the vehicle service manual and stall the parking

brake chamber. Install bridge pipe and hydraulic hose.

SEAL

PISTON

12. Install the brake shoes following procedures under Brake

Shoe Installation in this manual. Refer to the vehicle

service manual for procedures to bleed the air from the

brake system. After bleeding, manually readjust the brake

shoe to drum clearance as necessary. Refer to Brake

Shoe Adjustment in this manual.

ASSEMBLE WHEEL CYLINDER UNIT

Use all of the parts supplied in the Bendix repair kit to replace

the old parts removed from the cylinder.

1. Lubricate the piston seal, Figure 15, with new DOT 4

brake fluid and install the seal onto the piston with the

lip facing inwards, Figure 21.

Install the dust boot to the piston and smear the inside

of the dust boot with the grease furnished in the kit.

OVERRIDE

WHEEL

RETAINER

RING

GROOVE

IN PISTON

OLD STYLE

OVERRIDE WHEEL

RETAINER RING

GROOVE IN PISTON

HAS BEEN ELIMINATED

NEW STYLE

FIGURE 23 - NEW AND OLD STYLE PISTON AND OVERRIDE

WHEEL