SPECIFICATIONS

ManualsBrandsDoosan ManualsOtherSpecifications Systems Operation Testing & Adjusting (part 2)

Vehicle Systems Testing And Adjusting

Wheel Brakes

(3) Star wheel. (4) Bolt. (5) Tongue. (6) Plate. (7) Adjuster.

(8) Star wheel.

4. Turn star wheel (3) until a heavy resistance (drag)

is felt when the wheel is turned.

5. Put a thin blade screwdriver into the hole and hold

tongue (5) of plate (6) away from star wheel (3).

NOTE: Tongue (5) must be held away from star

wheel (3) as the adjustment wheel is turned back-

ward.

6. Put the brake tool through the hole, into a tooth on

star wheel (3) and turn wheel (3) backward until

there is no resistance (drag) on the wheel.

7. Turn wheel (2) until the hole is in alignment with

star wheel (8) of the brakes.

8. Do Steps 3 through 7 to adjust the other brake lin-

ing-to-drum clearance.

9. Test the brakes to be sure both wheels stop even-

ly when a brake application is made.

Brake Adjuster Installation

If the adjuster was removed to replace the housing

or adjuster, do the procedure that follows to center

the adjuster correctly.

Brake Adjuster

(3) star wheel. (6) Plate (8) Star wheel. (9) Screw. (10) Screw.

(X) Distance 1.05 mm (.041 in).

(Y) Distance 1.05 mm (.041 in). (Z) Distance 85 mm (3.35 in)

1. Check distance (X) and (Y) from the inside edge

of star wheels (3) and (8) to the rounded edge of

plate (6). Distance (X) or (Y) is 1.05 mm (.041 in)

maximum. Distance (X) + (Y) must be 1.0 to 1.6

mm (.039 to .063 in)

NOTE: Distances (X) and (Y) are adjustable with

shims behind the star wheels and should have to be

adjusted only if the adjuster is disassembled.

2. Next, check distance (Z) between the slots of

screws (9) and (10). Distance (Z) must be 85 mm

(3.35 in). Adjust screws (9) and (10) evenly to get

the correct distance and make sure the distance

between each screw and its star wheel is the

same.

3. Put the adjuster in position on the housing. Do not

tighten bolt (4) yet.

4. Install the wheel on drum. After installed, tighten

bolt (4) to a torque of 72 L 5 NIm (55 L 4 lbIft)

and do the manual brake adjustment.

Pedal Adjustment

The brake pedal must have enough free play to let

the master cylinder piston return to the release posi-

tion and open the relief outlet.

Hydraulic pressure in the brake lines goes back

through the relief opening and releases the brakes. If

there is no pedal free play, the pressure can not go

back through the relief opening, and the brakes will

tighten and not release.

IDCS138S

IDCS139S