Discovery II
MAINTENANCE
PROCEDURES
10-31
Road/roller test
WARNING: Roller test must be restricted to 3
mph (5 km/h). If 2 wheel rolling road is to be used,
disconnect propeller shaft from the transfer box
output shaft driving the axle which is NOT on the
rolling road.
Testing
1. 2 wheel rolling road: Engage differential lock
using a 10 mm open ended spanner on flats
machined on differential lock selector
shaft.Switch on ignition and check that the
differential lock, electronic brake
distribution and hill descent warning lamps
are illuminated.
2. Check for correct operation of starter switch,
ensure engine starts correctly; leave the engine
running.
3. Check for correct operation of starter switch,
ensure engine starts correctly; leave the engine
running.
4. With vehicle stationary, turn steering from lock
to lock. Check for smooth operation and ensure
there is no undue noise from power steering
pump or drive belt.
5. Depress clutch and select all gears in turn,
check for smooth, notch free engagement.
6. Check all vehicle systems for correct
operation.
7. Check for unusual engine, gearbox and
suspension noises.
8. Check braking system operation.
9. Check for smooth gear engagement.
10. Check engine performance.
11. Check operation of all instruments and warning
devices where practicable.
12. Where possible, check for correct operation of
hill descent control (HDC) mechanism. This
should not be carried out if excessive journey
time is required.
13. After road/roller test, carry out a final inspection
of vehicle, with vehicle on a ramp.
14. Check all fluid levels and top-up if necessary.
15. 2 wheel rolling road: Ensure differential lock is
disengaged and propeller shaft is connected on
completion of test. Switch on ignition and
check that differential lock, electronic brake
distribution and hill descent warning lamps
are extinguished.