DAF LF45, LF55 Series. Manual — part 509
7
LF45/55 series
Removal and installation
STEERING BOX
4-13
7.
Take the universal joint (1) off the steering
box.
8.
If the vehicle has an airbag, use adhesive
tape or some other means to prevent the
steering wheel from turning.
If the steering wheel is rotated more
than 3 turns to the left or right from
the central position, this will
damage the airbag contact unit.
9.
Take the steering oil pipes off the steering
box. Collect the steering oil flowing out and
plug the openings of the pipes and on the
steering box, to prevent dirt entering.
10. Remove the dust cover (2) and the sealing
rubber (3).
11. Take the attachment bolts off the cover (11)
and remove the cover.
12. Remove the piston (7) by turning the pitman
arm (13) so that the piston is forced out of
the steering box.
Note:
When the pitman arm is turned, the piston is
forced out through the sector shaft. At a
certain point the piston will no longer be
supported by the sector shaft. Support the
piston in an appropriate manner.
7
3
2
8
9
10
11
12
13
6
5
4
1
S7 00 837
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3
7
STEERING BOX
Removal and installation
LF45/55 series
4-14
13. Take the pivot bearing (2) and the thrust
washer (1) out of the housing.
S7 00 863
1
2
14. Take the oil seal (1) out of the housing
carefully.
S7 00 864
1
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3
7
LF45/55 series
Removal and installation
STEERING BOX
4-15
Checking piston and steering box
Note:
If steering box components are damaged or
worn, replace the steering box assembly or have
the steering box overhauled in a specialist
workshop.
1.
Inspect the inside of the steering box for
wear and damage.
S7 00 865
2.
Check the running surface of the oil seal on
the input shaft.
S7 00 866
3.
Check the wheel-deflection limiting valves
for the following points: smooth operation of
the wheel-deflection limiting valve, the pins
(1) must not be bent and it must not be
possible to turn the tube (2) in which the
valves are located.
1
1
2
S7 00 867
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3
7
STEERING BOX
Removal and installation
LF45/55 series
4-16
4.
Inspect the worm shaft raceway, the piston
running surface and the toothing.
S7 00 868
Installing piston
1.
Inspect the piston sealing ring (1) and the
worm shaft sealing rings (3). If necessary,
replace the piston sealing ring (1) and
O-ring (2), and the worm shaft sealing
rings (3).
S7 00 869
1 2
3
Note:
If the sealing rings (3) need to replaced,
follow the procedure below:
-
Slide both parts (A and B) of the
assembly sleeve, special tool
(DAF no. 0485243) for a 8090 steering
box and special tool
(DAF no. 0192507) for a 8095/8098
steering box, over the worm shaft and
grease them sparingly.
-
First slide the sealing ring (1) over the
assembly sleeve into groove X and
then slide the other sealing ring into
groove Y.
S7 00 870
B
Y
X
1
A
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3
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