152
SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
Section 5 – Procedures 1000 Hour or Annual Routine Maintenance
7. Run distilled water/clean tap water into the heater
system through the manual valve hose until clean
water comes out of the heater valve hose.
Heater Valve
Hose
Manual
Valve Hose
Manual
Heater Valve
Figure 59 Heater Unit Flushing
8. Reinstall the heater hose into the manual heater
valve. Keep valve closed.
9. Place a section of a 5/8” hose with a plugged end
on the motorized heater valve as shown.
Plugged End
Hose
Motorized
Heater Valve
Manual
Heater Valve
Connect
Figure 60 Plugged Hose Installation
10. Fill the cooling system with distilled water through
the radiator neck until water is visible.
11. Run the engine until the module display indicates
75° to 80° without radiator cap. Check for leaks.
Shut down the engine.
12. Place a container capable of holding 5 gallons (17
liters) under the radiator drain plug.
13. Let the engine cool down and open the radiator
drain plug and allow radiator and coolant bottle to
drain.
NOTE
If heater is equipped, remove the plugged hose
at the motorized heater valve for proper draining.
Must be reinstalled if another flush is needed.
14. Close the drain plug.
NOTE
Refer to your local/national regulations on how to
dispose of used coolant fluid.
15. Repeat steps 10 to 14 until clean water came out
of the system.
16. After cleaning and flushing operations are
completed refill the radiator using a mixture of
antifreeze and distilled water (Table 2.3). Refer to
engine manufacturer’s manual.
NOTE
If heater is equipped remove the plugged hose at
the motorized heater valve and install the heater
hose. Open manual heater valve.
17. Fill radiator completely through the radiator neck,
until coolant is visible. See figure below.
Filler
Cap
Surge
Tank
Figure 61 Surge Tank Location
18. Run the engine until the module display indicates
85° to 90° without radiator cap. Shut down the
engine.
19. Check coolant level and coolant strength in the
radiator. Adjust mixture as required. Refill until
coolant is visible.
20. Tighten radiator cap, start the engine, and check
for leaks.
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