Parking Brake
Fig. 19.
Adjust Parking Brake at Handle
Fig. 18.
B. Return Spring
A. Adjusting lever Nut
.010 (0,3) clearance is obtained between disc and
C. Pad & Lining Assembly
lining pad on one side only.
h a r d w a r e . The reservoir return filter assemblies
are designed and installed in a manner that per-
Mounting Bolts: Check brake disc
Brake Disc
mits the filter assembly to act as a relief valve so
mounting bolts
after first 250 operating hours. If
that oil can be by-passed if the filter element be-
any bolts show
evidence of loosening, all brake disc
comes excessively plugged with foreign material.
mounting bolts
should be re-tightened as follows:
1. Tighten all brake disc mounting bolts to 159 to
During normal operation, hydraulic system oil
175 ft. lbs.
flows through the return filter assemblies from in-
side to outside before entering the reservoir. How-
2. Repeat entire procedure so that each individual
ever, when the filter elements become excessively
bolt is checked twice. Subsequent checking
plugged with foreign material or contaminants, a
should not be necessary until brake disc is re-
difference in pressure within the inner side of the
placed.
filter elements and reservoir will be created. When
the pressure differential reaches approximately 11
Replacement of Brake Disc: If at any time it
psi, the filter assembly is forced downward per-
is necessary to replace the brake disc, all mounting
mitting the hydraulic oil to by-pass the plugged
bolts should be tightened in the following manner :
filter elements entering directly into the hydraulic
1 . Tighten all brake disc mounting bolts to 159-
reservoir.
175 ft. lbs.
2. Repeat entire procedure so that each individual
bolt is checked twice.
3 . After first 250 operating hours on new disc,
check brake disc mounting bolts. If any bolts
show evidence of loosening, all brake disc
m o u n t i n g bolts should be retightened as de-
scribed in Steps 1 and 2 above.
Service Reservoir Return Filter Assemblies:
The hydraulic reservoir return filter assemblies
installed inside the hydraulic reservoir consist of
a head and handle assembly, o-ring, filter elements
secured between a holder assembly with retaining
plates (center and bottom), a spring and attaching
Reservoir Return Filter Assembly
Fig. 20.
[45-04-4]