Brake Adjustment; Brake Shoe Adjustment - Atlas Copco XAMS 407 CD Instruction Manual

BRAKE ADJUSTMENT

Before jacking up the compressor,
connect it to a towing vehicle or attach a
weight of minimum 50 kg (110 lb) to the
towbar.

BRAKE SHOE ADJUSTMENT

(1)
(3)
Check the thickness of the brake lining.
• Remove both black plastic plugs (3) one on each
wheel.
• Check the thickness of the brake lining.
When the brake lining has been worn to
a minimum thickness, the brake shoes
have to be replaced (Min. thickness
brake lining: 1 mm (0.039 in)).
• After inspection and/or replacement re-insert both
plugs (3).
Brake shoe adjustment re-establishes the brake
lining-to-drum clearance and compensates for lining
wear.
- 63 -
(2)
1. Lift and support the compressor. Make sure that
all brakes (overrunbrake and hand brake) are off.
The brake cables must be free from tension.
2. Lock the swivel cams of the wheel brake from the
outside by means of a pin (2) through the hole (Pin
Ø 4 mm (0.16 in)).
3. Turn the adjusting bolt (1) clockwise with a
wrench till the wheel locks up. Center the brake
shoes by actuating the parking brake several
times.
4. Turn the adjusting bolt (1) anti-clockwise until the
wheel is running free in the direction of travel
(approx. 1 full turn of the adjusting bolt).
5. Check the position of the equalizer (4) with the
parking brake actuated. (Perpendicular position of
equalizer = identical clearance of wheel brakes.)
Re-adjust the brake shoes, if necessary.
6. To test, slightly apply the parking brake and check
identical brake torque on left and right side.
7. Remove locking pin (2). Remove clearance from
brake cables.
8. Check all lock nuts (5).
(5) (5)
(4)