Terex TR60 Maintenance Manual page 280

Cooling System - Transmission Oil Cooler
Section 210-0060
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 shutdown the engine.
2. Turn the steering wheel in both directions several
times to relieve pressure in the steering system. Block
all road wheels.
3. Open drain cocks and drain the cooling system.
Refer to Section 210-0000, COOLING SYSTEM, for
procedure.
4. Remove drain plug from underside of the
transmission and drain transmission oil into a suitable
container.
5. Loosen clamps (18 & 20) and slide sleeve (19) over
coolant inlet tube (21) from connection at port 'A'.
Drain coolant from port 'A' and coolant inlet tube (21)
into a suitable container.
6. Loosen clamps (14 & 16) and slide sleeve (15) over
coolant outlet tube (17) from connection at port 'D'.
Drain coolant from coolant outlet tube (17) into a
suitable container.
7. Remove drain plugs (6) on underside of
transmission oil cooler (1) and drain oil into a suitable
container.
8. Remove oil inlet line (10) from elbow (9). Drain oil
inlet line (10) into a suitable container. Cap oil inlet line
(10) to prevent entry of dirt.
9. Remove elbow (9) from port 'B'. Plug port 'B' to
prevent entry of dirt.
10. Remove oil outlet line (13) from elbow (12). Drain
oil outlet line (13) into a suitable container. Cap oil
outlet line (13) to prevent entry of dirt.
2
11. Remove elbow (12) from port 'C'. Plug port 'C' to
prevent entry of dirt.
12. Support transmission oil cooler (1) with a suitable
lifting device and remove bolts (7) and hardened
washers (8) securing transmission oil cooler (1) to
mounting bracket (11) located on right hand frame rail.
Lower transmission oil cooler (1) 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 (1) 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 transmission oil cooler (1). 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 transmission oil cooler (1) before sludge
hardens. After transmission oil cooler (1) 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.
SM 1590 12-98