DAF LF45 Series, Maintenance Manual

Page: 66 / 128

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES
3-20
©
200515
Inspection and adjustment
5
ΛΦ45/55
series
8. Read the brake pressure of the rear axle on
pressure gauge 2 and check that this brake
pressure matches the one listed on the
instruction plate in the table under "output
pressure p2" to the rear axle.
9. If the measured value is not correct,
depressurise connection (43) and, using a
special slotted-nut spanner, special tool
(DAF no. 1329464), turn the adjusting
nut (s):
- brake pressure too high: unscrew the
adjusting nut
- brake pressure too low: screw in the
adjusting nut
Note:
When depressurising the simulation
connection (pressure gauge 43), the air hose
must remain connected to prevent the
(actual) bellows pressure from accidentally
activating the valve.
The small socket head screw in the centre of
the valve must not be adjusted.
10. Repeat the procedure described in point 6
until the measured brake pressure value is
within the tolerance limits.
11. Set the simulated bellows pressure to its
second highest value, as indicated on the
instruction plate.
12. Depress the brake pedal until the pressure
gauge (4) indicates a pressure of 6 bar.
13. Read pressure gauge (2) and check that this
brake pressure matches the pressure
indicated in the table on the instruction plate.
14. If the measured reading is not correct,
depressurise connection (43) and turn
adjusting bolt (r) using a Torx screwdriver:
- brake pressure too high: screw in the
adjusting bolt
- brake pressure too low: unscrew the
adjusting bolt
Note:
When depressurising the simulation
connection (pressure gauge 43), the air hose
must remain connected to prevent the
(actual) bellows pressure from accidentally
activating the valve.
The small socket head screw in the centre of
the valve must not be adjusted.
15. If the adjusting bolt (r) has been turned,
repeat the procedure from point 6.
R600478
43
1/4
4
2
2
R600473
1
41 42
r
s
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