Blue Giant BGN-40, Owner'S Manual

Page: 41 / 126

SECTION 6
BRAKE SERVICING
6-1. BRAKES.
The brake system consists of a drive motor mounted
brake. This brake is spring applied and electrically
released.
6-1.1. Air Gap Adjustment.
The “air gap” is the distance between the magnet body
and the rotor plate with the brake applied. As the brake
pads and rotor wear normally, the air gap will increase
and should be readjusted when it measures more than
0.25 mm.
NOTE:
If the air gap measures more than 0.25 mm,
the brake may not release properly. Air gap
adjustment can be performed as long as the
brake pads and rotor function properly or until
the adjustable spacer threads are fully
engaged (adjustment limit reached).
1. Block load wheels.
2. Remove the compartment covers as described in
paragraph
5-3.
3. Using low pressure air, remove any dirt between
armatures and magnet body.
4. Using standard feeler gauges, check the gap
between the magnet body and the rotor plate. The
gap should be 0.25 mm.
5. If necessary, refer to Figure 6-1 and adjust the
gap as follows:
a. Loosen the three mounting screws by half a
turn.
f. The threaded air gap adjusting nuts can then
be screwed into Magnet Body by turning
counterclockwise.
g. Turn the three mounting screws clockwise
until the gap measures 0.012” (0.25 mm).
h. The threaded air gap adjusting nuts are then
screwed clockwise until they bottom.
i. Finally tighten the three mounting screws to
52 in-lb (6 Nm).
j. Recheck the gap.
11. Remove load wheel blocks and check operation.
12. Install the compartment covers as described in
paragraph 5-3.
Figure 6-1 Brake Assembly
R6625
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