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Group 177 Preventive Maintenance
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Check Parking Brake and Blocking Valve
Check the parking brake and blocking valve holding power
by engaging direct gear, not allowing the engine speed
to go above 1000 rpm and attempt to drive off with the
parking brake still applied. The parking brake should hold
the vehicle stationary while letting the clutch up slowly.
Release the parking brake and start driving. Check that
the parking brakes are released quickly and that no
braked drag can be felt.
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Check Gear Shift and Clutch Pedal
To perform a service check on the Gear Shift and Clutch
Pedal, complete the following:
1 Move the gearshift to range and split gear positions.
Listen to the sound when passing through neutral and
checking the range gear. The control lamp should light
up when the high split gear is engaged.
2 Check, on the automatic gearbox, that the engine can
only be started when the gear selector is in neutral (N).
3 Check that there is no excessive play in the gearshift.
4 Check that the gear stick gaiter fits tightly and is not
cracked.
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