Service and maintenance
140
Brake system
Service brakes, checking brake discs
Check the brake lining wear every 2000 hours. The first check
should be carried out after 500 hours.
NOTE! This applies under normal operating conditions. For
harder type of operation, the brake linings must be checked
more often.
To be able to check the brake disc wear, the brake pedal must be
kept in the depressed position and therefore two persons are
required to carry out the check.
The measuring is done on a brake indicator which is positioned in
the brake back-plate on each brake drum.
1 Place the machine in service position, see page 89.
2 Apply the parking brake.
3 Start the engine and run it until the control lamp for low brake
pressure is extinguished.
4 Press down the brake pedal and keep the pedal in the
depressed position during the entire check.
Proceed as follows with each brake:
1 Remove the protective cap from the brake indicator.
2 Carefully press in the indicator as far as possible with a small
screwdriver. Then measure the distance from the face of the
nipple in to the indicator. Make a note of the measurement.
3 The brake linings are worn out when measurement
X
equals
0 mm.
A35E/A35E FS, (X in the table designates new linings)
A40E/A40E FS, (X in the table designates new linings)
If the linings are worn out, contact a workshop authorised by
Volvo CE.
4 Let up the brake pedal.
Pay attention and prevent the
machine form moving.
5 Replace the protective cap on the brake indicator.
Tightening torque 30 Nm (3 kgf m) (22 lbf ft).
Brake piston, adjusting stroke clearance
The stroke clearance of the brake piston is self adjusting.
Front axle
X
= 6.8 ± 0.1 mm (0.27 ±0.004 in)
Front bogie axle
X
= 3.4 ± 0.1 mm (0.13 ±0.004 in)
Rear bogie axle
X
= 3.4 ± 0.1 mm (0.13 ±0.004 in)
Front axle
X
= 6.8 ± 0.1 mm (0.27 ±0.004 in)
Front bogie axle
X
= 4.5 ± 0.1 mm (0.18 ±0.004 in)
Rear bogie axle
X
= 4.5 ± 0.1 mm (0.18 ±0.004 in)
V1053055
Brake indicator after the protective cap
has been removed.
V1053060
Position of indicator pin below surface
Содержание A35E FS
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Страница 158: ...Service and maintenance 156 Lubrication and service chart 10 hour 50 hour 250 hour and 500 hour service 1046083 ...
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