3 - 3
Parking Brake
During Travel
During travel, pressurised oil is fed to chamber a of the
parking brake from the brake valve (see Brake Valve,
During Travel - Brake Released). When the oil pressure
exceeds the force of spring 113, piston 112 moves to the left
causing plate 116 and friction plate 115 to separate. This
releases the braking force from cylinder block 104, which is
free to rotate.
Travel Stopped
When travel is de-selected, pressurised oil is no longer fed
to chamber a, allowing piston 112 to move to the right under
the force of spring 113. Plate 116 and friction plate 115 are
thereby clamped together to prevent cylinder block 104 from
rotating.
Section F Transmission
9803/6410
Section F
3 - 3
Issue 1
Operation
JS01650
JS01660
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