Terex TR60 Maintenance Manual page 210

Brake Parts - Rear Axle
Section 165-0030
Note: If brake discs, service and/or parking pistons,
piston housing, or the complete brake assembly have
been replaced, a new brake-disc-stack-height
measurement should be taken as described under
'Disc Assembly Wear Measurement Procedure',
under 'Inspection' in this section. This dimension
should then be stamped on the machined surface of
pipe plug (47, Fig. 1) hole location for future
reference.
BLEEDING
Numbers in parentheses refer to Fig. 1.
WARNING
To prevent personal injury and property
damage, be sure wheel blocks are properly
secured and of sufficient capacity to do the job
safely.
In order to obtain satisfactory braking, the service
brake and parking brake hydraulic systems must be
bled to eliminate any air in the hydraulic lines, tubes
and systems.
1. Make sure the steering and brake control tank is
filled with oil specified in Section 300-0020,
LUBRICATION SYSTEM.
2. Start engine, build up oil pressure in accumulators
until accumulator pressure warning lights are
extinguished, then shut down engine.
3. Block all road wheels. Pull out park/emergency
brake control to release the brakes.
4. Securely connect a clean bleeder hose to upper
bleeder valve (54) and place loose end of hose in a
clean container.
18
WARNING
Loosen bleeder valves carefully. The braking
system operates at high pressure.
5. Depress service brake pedal and gradually open
bleeder valve (54). Bleeder valve should remain open
until oil coming from bleeder valve is free of air
bubbles. Close bleeder valve and release brake
pedal.
Note: Recharge the system when necessary by
repeating Step 2.
6. Securely connect bleeder hose to upper bleeder
valve (50) and place loose end of hose in a clean
container. Gradually open bleeder valve (50). Bleeder
valve should remain open until oil coming from
bleeder valve is free of air bubbles. Close bleeder
valve.
7. Repeat entire process for opposite brake
assembly.
Note: Steering and brake control tank must be kept
at correct level at all times with hydraulic oil specified
in Section 300-0020, LUBRICATION SYSTEM. Refer
to Section 220-0040, STEERING AND BRAKE
CONTROL TANK, for correct fill level.
Note: If brake assembly has been serviced, repeat
entire bleeding process to ensure all air is evacuated
from the brake assemblies.
SPECIAL TOOLS
Refer to Figs. 37 through 40 for fabrication details of
special tools and blanking plates referenced in this
section. Refer to Section 300-0070, SERVICE
TOOLS, for part numbers of the seal installation tools
outlined in this section and general service tools
required. These tools are available from your dealer.
SM 1583 12-98