SkyTrak 6036 Service Manual - Manual (Page 133)

Section 8B Cummins Engine
Model 6036/6036T S/N 9B0500 thru 14833 8B-13
6. Check for damaged hoses and loose or
damaged hose clamps. Replace as required.
Check the radiator for leaks, damage and
build up of dirt and debris, Fig. 8B.32. Clean
and repair as required.
Fig. 8B.32 Inspect for Worn Hoses, Loose Clamps,
Leaks and for the Accumulation of Dirt
MA1640 MA1650
MA1980
Fig. 8B.33 Back Flushing Radiator
8B.7.6 Cleaning the Cooling System
Back flush the radiator and engine to clean the
cooling system.
1. Remove both radiator hoses from the engine.
Attach the water supply to the lower radiator
connection and back flush the radiator, Fig
8B.33. If the radiator shows mineral build-up,
scale, rust or oil, use a heavy duty radiator
cleaner and follow the manufacturer's direc-
tions.
2. Remove the top heater hose. Attach the water
supply to the heater line and back flush the
engine, Fig. 8B.34. If the radiator shows
mineral build-up, scale, rust or oil, use a heavy
duty radiator cleaner and follow the
manufacturer's directions.
Fig. 8B.34 Back Flushing the Engine
MA1970
8. Install the radiator hoses, heater hose, engine
drain plug, tube to over flow bottle, and close
the radiator petcock.
8B.7.7 Filling the Cooling System
The system has a maximum fill rate of 3.5 gallons
per minute (14 liters per minute). DO NOT exceed
this fill rate.
IMPORTANT: The system must be filled slowly to
prevent air locks. During filling, air must be vented
from the engine coolant passages, Fig. 8B.35. Be
sure to open the petcock on the aftercooler for
aftercooled engines. Wait 2 to 3 minutes to allow
air to be vented, then add mixture to bring the
level to the top.
MA1600
Fig. 8B.35 “Jiggle Pin” Air Vent in Thermostat
Refer to paragraph 8B.4.7 and replace the air filter
primary element.
8B.7.8 Replace Air Filter
Primary Element