Terex TR60 Maintenance Manual page 263

Every 250 hours:
Check and replenish the DCA4 concentration as
described under 'Coolant Recommendations' in this
section.
Replace DCA4 coolant filter if required. When testing
the DCA4 concentration, depending on the level of
DCA4 , the coolant filter may not require to be
changed. Refer to instructions under 'Coolant
Recommendations' in this section.
Note: Under concentration of the DCA4 coolant
additive can result in liner pitting and system
corrosion. Over concentration can result in water
pump seal leakage. Always maintain DCA4
concentration at recommended levels.
Every 250 hours:
Lubricate the fan idler pivot arm with grease as
specified in Section 300-0020, LUBRICATION
SYSTEM. Lubricate the pivot arm until grease
appears from under the cap.
Every 1 500 hours:
Lubricate the fan hub with grease as specified in
Section 300-0020, LUBRICATION SYSTEM. Remove
vent plug from fan hub grease cavity and apply
grease through grease fitting until grease comes out
of the vent hole.
Every 6 000 hours:
Drain and flush the cooling system as described
under the heading 'Draining and Flushing' in this
section. Fill the cooling system with the correct
mixture of antifreeze, water and DCA4 liquid as
described under 'Coolant Recommendations' in this
section.
Inspect the fan hub for wobble and grease leakage.
Replace with a new or rebuilt unit as necessary.
Inspect the fan idler pulley assembly. Rebuild or
replace the idler pulley as necessary.
Inspect the engine water pump for coolant or oil
leakage at the water pump weep hole.
Note: A minor chemical buildup or streaking at the
water pump weep hole is normal. Do not repair or
replace the water pump unless an actual leak is
confirmed.
SM 1197 2-98
Cooling System - Cooling System
DRAINING AND FLUSHING
Note: If the DCA4 coolant filter is properly
maintained, the need for flushing the cooling system
is greatly reduced.
The draining and flushing of the cooling system
should be performed as follows:
WARNING
Do not remove the pressure control cap from
the radiator header tank or attempt to drain
the coolant until the engine has cooled. Once
the engine has cooled, use extreme caution
when removing the cap. Always release
pressure from the system by depressing the
pressure relief button on the cap. Remove cap
slowly as the sudden release of pressure from
a heated cooling system can result in a loss of
coolant and possible personal injury
(scalding) from the hot liquid.
1. Position the vehicle in a level work area, apply the
parking brake and switch off the engine. Turn the
steering wheel in both directions several times to
relieve pressure in the steering system.
2. Drain the coolant from the engine and radiator into
a suitable container.
3. Refill cooling system with clean soft water and a
good radiator cleaning compound. If the engine is
warm, fill slowly to prevent the rapid cooling and
distortion of the metal castings.
4. Start the engine and operate the truck for fifteen
(15) minutes to circulate the solution thoroughly.
5. Drain the cooling system completely.
6. Refill cooling system with clean, soft water and
operate the truck for fifteen (15) minutes. Drain the
cooling system completely to remove all cleaner
residue from the system.
7. Refill cooling system with proper mix of antifreeze
and water and install new precharge filter and correct
concentration of DCA4 liquid. Refer to instructions
under 'Coolant Recommendations'.
Note: If engine overheats and fan belt tension and
water level are satisfactory, the entire cooling system
may require cleaning with a descaling solvent and
back flushing.
Section 210-0000
3