8 - 31
Assembly (cont’d)
31 Dip the first friction plate 115, in hydraulic oil. Then
install it, locating it with the grooves in cylinder block
104. Install the first brake plate 116, locating it with the
grooves in spindle 2. Repeat for the second friction and
brake plates in order.
32 Lightly grease 'O' rings 135 and 139 and back-up rings
147 and 148. Fit them to the grooves on the outside of
parking brake piston 112.
Install the parking brake piston into spindle 2, taking
care not to damage the 'O' rings and seals. If necessary,
tap the piston with a plastic hammer.
33 Coat two new 'O' rings 137 with grease and fit one to
each plug 126.
34 Coat the spring surface of two valves 127 and both
ends of two springs 130 with grease. Assemble a spring
followed by a valve onto each plug 126.
Install these assemblies into rear flange 101. Take care
that the assembled parts do not separate from each
other whilst installing. If this happens the valves may not
seat properly with the rear flange, resulting in oil
leakage.
Section F Transmission
9803/6020
Section F
8 - 31
Issue 1
Track Gearbox
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