the engine manufacturer’s service literature for
specific coolant information.
14. Replace the surge tank cap(s).
15. Return the hood to the operating position.
16. Start the engine and turn on the cab heater.
Allow the engine to warm up to normal operating
temperature. Check the radiator and hoses for
leaks. Repair as needed.
17. Shut off the engine, then check the coolant level
in the surge tank. Add coolant if the level isn’t at
the MAX line on the surge tank.
20–03 Fan Clutch Check (Noise
Emission Control)
Borg Warner (Kysor) K30 Fan
Clutch
1.
Disconnect the batteries at the negative termi-
nals. Drain all air from the air system.
NOTE: the Borg Warner Service Alert Tool is
available at no cost. To get one, contact your
Borg Warner representative.
If the tool is not available, use a 0.062-inch
(1.57mm) feeler gauge to check the clutch wear.
2.
Using the Borg Warner Service Alert Tool, check
the clutch wear as shown in
, and
.
If the tool is sitting below the retainer plate, the
fan clutch liner has remaining life.
If the tool is sitting above the retainer plate, re-
place the fan clutch liner.
3.
Connect the battery cables.
4.
Start the engine, and check for air leaks. Repair
as needed.
Horton DriveMaster® Fan Clutch
NOTE: If any part of the fan clutch needs to be
repaired or replaced after performing the checks
below, see
of the
Western Star 47X
and 49X Workshop Manual
for instructions.
1.
Disconnect the batteries at the negative termi-
nals.
2.
Inspect the electrical connections and wires to
the fan clutch solenoid. Secure the connection if
loose; replace wires and connectors if damaged.
3.
Check the fan for bent, cracked, or damaged
blades. Replace if damaged. Check for adequate
clearance between the fan and other compo-
nents.
f200866
06/20/2016
With the fan clutch engaged, check the remaining life in
the clutch liner.
Fig. 4, Tool Below Retainer Plate, Liner Life Remaining
f200867
06/20/2016
With the fan clutch engaged, check the remaining life in
the clutch liner.
Fig. 5, Tool Above Retainer Plate, Liner Replacement
Needed
Engine Cooling/Radiator
20
47X and 49X Maintenance Manual, August 2020
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