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MAINTENANCE
5.
Open the radiator drain valve. Allow the system to completely drain
into a suitable container. Do not let drain outlets plug up during
draining. Close the radiator drain valve and engine oil cooler drain
valve.
Flushing the System
3
1.
Be sure the radiator drain valve and engine oil cooler drain valve
are closed and tightened. Fill the system with clean water and add a
flushing compound that is compatible with aluminum. Flush the
system in accordance with the instructions furnished with the com-
pound.
2.
After flushing, rinsing and completely draining the system, refill
with clean coolant, see the following.
Refilling the System
3
1.
Be sure the radiator drain valve and engine oil cooler drain valve
are closed and tightened. Fill the cooling system to maximum ca-
pacity. Fill with antifreeze according to the instructions printed on
the container. For details of the fluid to use, see "USE OF FUEL,
COOLANT AND LUBRICANTS" on page 3-7
2.
Start engine and run until normal operating temperature is reached.
Add coolant to keep the proper level at the bottom of the filler neck
tube.After all air is removed and level remains fixed, install the ra-
diator cap.
TRANSMISSION SCAVENGER SCREEN
3
1.
To gain access to the oil strainer first remove the center cover in
floor of cab. Disconnect the transmission scavenger hose (1) from
the intake pipe (2). Remove the screen from the hose.
2.
Clean the screen with a nonflammable commercial cleaning sol-
vent. Reinstall the screen into hose (1). Reinstall the transmission
scavenger hose to the pipe (2). Make sure that the screen is prop-
erly seated in the hose.
3.
Reinstall the center cover.
CHECKING TENSION OF COMPRESSOR BELT
3
If the belt is loose, it will slip and the cooling effect will be reduced.
From time to time, press a point midway between the drive pulley and
compressor pulley with your finger ≈ 10 kgf (22 lbf) and check that the
deflection (A) is 15 to 18 mm (0.6 to 0.7 in).
When the belt is new, there will be initial elongation, so always adjust
again after 2 or 3 days.
3-86
D87E-2 D87P-2
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