UNCONTROLLE
D IF P
R
INTE
D
ELECTRICAL AND MECHANICAL
ENGINEERING INSTRUCTIONS
VEHICLE H 983
Issue 1, Jul 11
5
Adjustment and Calibrations
14.
Light Grade Repairs include the following procedures:
a.
Axle alignment, and
b.
Brake adjustment
Functional Tests
15.
Light Grade Repair includes the following procedures:
a.
Brake System Operating and Leakage Tests
Replacement
16.
Light Grade Repair includes replacement and/or repair of the following components:
a.
Axles:
(1)
hubs,
(2)
hub seals,
(3)
hub bearing cups, and
(4)
hubodometer.
b.
Wheels.
c.
Brakes:
(1)
brake relay valves,
(2)
boost relay valve,
(3)
spring brake control valve,
(4)
yard release valve,
(5)
spring brake assembly, and
(6)
brake shoes.
d.
Electrics.
ADJUSTMENT PROCEDURES
AXLE ALIGNMENT
17.
The dolly converter axles are to be aligned so that the centre lines of the two axles are at right angles to the
centre line of the dolly converter frame (Figure 1). The allowable tolerance for each dimension is ±1 mm.
Figure 1 Dolly Converter Axle Alignment Diagram
