SECTION 5 MAINTENANCE INSTRUCTIONS
5-38 DD-29/31HF/38HF Vibratory Asphalt Compactors
NOTICE
To prevent air locks, the system must be filled properly. Air must be
vented from coolant passages during the fill operation.
NOTE: A mixture of ethylene glycol antifreeze and water is recommended
to refill the radiator. Refer to the engine manual for the manufacturer's
recommendation for proper ratio of antifreeze to water mixture. The
addition of a separate lubricant and corrosion inhibitor will guard against
internal corrosion and freezing.
6. Refill the coolant system.
7. Drain and clean overflow bottle (1, Figure 5-48). Refill the overflow bottle with
a 50-50 mixture of antifreeze and water. Fill coolant bottle to “COLD FILL MIN”
mark on the bottle.
Coolant Level must be maintained. Air will enter engine coolant system if no coolant is
present in the bottle.
Figure 5-48
8. Install radiator cap (1, Figure 5-45) and cap on coolant recovery bottle. Operate
engine until it reaches operating temperature. Check for any leaks.
Change Air Filter Elements
NOTE: Dust that gets by the air cleaner system can often be detected by
looking for dust streaks on the air transfer tubing or just inside the intake
manifold inlet.
The air filter elements must be changed at this interval.
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