Transmission Oil Cooler - Terex TR60 Maintenance Manual

Cooling System - Disc Brake Oil Cooler
Section 210-0050
REMOVAL
Numbers in parentheses refer to Fig. 1.
WARNING
To prevent personal injury and property
damage, be sure wheel blocks and lifting
equipment are properly secured and of
adequate capacity to do the job safely.
1. Position the vehicle in a level work area, apply the
parking brake and switch off the engine.
2. Turn the steering wheel in both directions several
times to relieve pressure in the steering system.
Block all road wheels.
3. Remove filler cap from body and disc brake
cooling tank. With a suitable container in position,
remove drain plug from the bottom of the body and
disc brake cooling tank and drain the oil.
4. Using a suitable lifting device, support engine pan
guard and remove attaching bolts, nuts, lockwashers
and washers. Remove engine pan guard from truck.
5. Open drain cocks and drain cooling system. Refer
to Section 210-0000, COOLING SYSTEM, for
procedure.
6. Slacken bolts (5 & 6) securing cooler flanges (3) to
heat exchanger (2) slowly, and drain coolant from disc
brake oil cooler into a suitable container.
7. Remove drain plugs (8) on underside of disc brake
oil cooler and drain oil into a suitable container.
8. Remove bolts (10), lockwashers (13) and split
flanges (11) securing oil line (9) at port 'C'. Drain oil
line (9) into a suitable container and discard 'O' ring
(12). Cap oil line (9) end and port 'C' to prevent
ingress of dirt.
9. Remove bolts (10), lockwashers (13) and split
flanges (11) securing oil line (14) at port 'B'. Drain oil
line (14) into a suitable container and discard 'O' ring
(12). Cap oil line (14) end and port 'B' to prevent
ingress of dirt.
10. Loosen clamps (17) and slide coolant tubes (18)
off connections at ports 'A' and 'D'. Drain coolant tubes
into a suitable container.
11. Support disc brake oil cooler with a suitable lifting
device and remove bolts (15) and washers (16)
2
securing disc brake oil cooler to mounting bracket on
engine front crossmember. Lower disc brake oil
cooler and remove to a clean work area for
disassembly.
CLEANING AND DISASSEMBLY
Numbers in parentheses refer to Fig. 1.
Note: In the event of a major mechanical failure,
transmission oil cooler assembly should be cleaned
thoroughly or replaced. Do not attempt to clean
cooler cores, after a transmission failure in which
metal particles from worn or broken parts are
released into the oil. Replace the cooler cores.
In many areas, raw water is extremely corrosive or
scale forming and should be treated to prevent
damage to the disc brake oil cooler. A properly
maintained cooling system will significantly reduce
cleaning intervals. Refer to Section 210-0000,
COOLING SYSTEM.
Cleaning Oil Side
WARNING
Dangerous fumes. To prevent personal injury,
use trichloroethane only in the open or in a
well ventilated room.
1. Clean disc brake oil cooler before sludge hardens.
After disc brake oil cooler is completely drained,
circulate a solution of trichloroethane through the
passages surrounding the cooler tubes in heat
exchanger (2) to remove sludge.
2. If cooler tubes are badly clogged, circulate an
oakite or alkaline solution through heat exchanger (2).
Solution should be circulated through heat exchanger
(2), in the reverse direction to normal flow, for
approximately 15 minutes, after soaking for 10
minutes. The duration of circulation depends on how
badly clogged the cooler tubes are. Flush thoroughly
with clean hot water.
Cleaning Water Side
1. Match mark cooler flanges (3) and heat exchanger
(2) to aid in assembly.
2. Remove bolts (5 & 6) and washers (7) securing
cooler flanges (3) to heat exchanger (2). Remove
cooler flanges (3) from heat exchanger (2) and discard
gaskets (4).
SM 1589 12-98