DAF LF45, LF55 Series. Manual — part 481
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LF45/55 series
Steering gear, general
TECHNICAL DATA
1-1
1. STEERING GEAR, GENERAL
1.1 GENERAL
Steered axles
Vehicle type
GVW
Front axle
Trailing axle
LF45
6 and 8 tonnes
F36
N/A
LF45
10, 11 and 12 tonnes
F48
N/A
LF55
12, 13, 14 and 15
tonnes
F60
N/A
LF55 FAN
12, 13, 14 and 15
tonnes
F60
Steered trailing swivel
axle (F60)
LF55
16 and 18 tonnes
152N
N/A
Steering box
Vehicle type
GVW
Steering box
Max. system
pressure
LF45
6 and 8 tonnes
ZF8090
130 + 10 bar
LF45
10, 11 and 12 tonnes
ZF8090
180 + 10 bar
LF55
12, 13, 14 and 15
tonnes
ZF8095
150 + 10 bar
LF55 FAN
12, 13, 14 and 15
tonnes
ZF8095
150 + 15 bar
LF55
16 and 18 tonnes
ZF8098
150 + 10 bar
Circulation pressure
Maximum permissible circulation pressure of
the steering gear at a steering-oil temperature
of 50
_C
10 bar max.
Final limiting pressure
Final limiting pressure at a steering-oil
temperature of 50
_C and an engine speed of
1200-1400 rpm
40 - 45 bar
Steering box internal leaks
Maximum permissible internal leakage in the
steering box
ZF 8090 steering box
2.0 l/min.
ZF 8095 and 8098 steering box
2.5 l/min.
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TECHNICAL DATA
Steering gear, general
LF45/55 series
1-2
Steering box internal play
Maximum permissible internal play of the
steering box with a blocked pitman arm
4 cm steering wheel deflection
Steering pump
LF45 series
ZF 7684 steering pump
LF55 series, other vehicles
ZF 7685 steering pump
LF55 series FAN version
ZF 7687 steering pump
Steering pump output
Steering pump output at a steering oil
temperature of 50
_C and pressure of 50 bar,
at idling speed
ZF 7684 steering pump
5.9 l/min. minimum
ZF 7685 steering pump
7.0 l/min. minimum
ZF 7687 steering pump
10.8 l/min. minimum
Steering pump output at a steering oil
temperature of 50
_C, pressure of 50 bar and
an engine speed of approx. 1300 1400 rpm
ZF 7684 steering pump
8.0 - 10.4 l/min.
ZF 7685 steering pump
16.0 - 20.8 l/min.
ZF 7687 steering pump
22.5 - 27.5 l/min.
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LF45/55 series
Steering box
TECHNICAL DATA
2-1
2. STEERING BOX
2.1 GENERAL
Steering box
Version:
single-circuit steering box with automatic
bleeding, self-adjusting wheel-deflection
limiting valves and pressure-limiting valve.
Type:
ZF 8090
used on F36 and F48 front axle.
ZF 8095
used on F60 front axle.
ZF 8098
used on 152N front axle.
Pressure point
Resistance increase in the pressure point
ZF 8090
20 - 60 Ncm
ZF 8095
20 - 80 Ncm
ZF 8098
20 - 100 Ncm
Input shaft end play
ZF 8090
0.005 - 0.025 mm
ZF 8095
0.010 - 0.030 mm
ZF 8098
0.020 - 0.040 mm
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TECHNICAL DATA
Steering box
LF45/55 series
2-2
2.2 TIGHTENING TORQUES
The tightening torques stated in this section are
different from the standard tightening torques
included in the overview of standard tightening
torques. Any other threaded connections that
are not specified must therefore be tightened to
the tightening torque stated in the overview of
standard tightening torques.
When attachment bolts and nuts are to be
replaced, it is important - unless stated
otherwise - that these bolts and nuts are of
exactly the same length and property class as
the ones removed
.
LF45 steering gear
S7 00 884
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