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Hoses and vacuum/vapor harnesses – Dodge 2007 Power Wagon User Manual

Page 409

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• Check coolant freeze point in the radiator and in the

coolant recovery bottle. If antifreeze needs to be
added, contents of coolant recovery bottle must also be
protected against freezing.

• If frequent coolant additions are required, or if the

level in the coolant recovery bottle does not drop when
the engine cools, the cooling system should be pres-
sure tested for leaks.

• Maintain coolant concentration at 50% HOAT engine

coolant (minimum) and distilled water for proper
corrosion protection of your engine which contains
aluminum components.

• Make sure that the radiator and coolant recovery

bottle overflow hoses are not kinked or obstructed.

• Keep the front of the radiator clean. If your vehicle is

equipped with air conditioning, keep the front of the
condenser clean, also.

• Do not change the thermostat for summer or winter

operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory coolant performance, poor gas
mileage, and increased emissions.

Hoses And Vacuum/Vapor Harnesses

Inspect surfaces of hoses and nylon tubing for evidence
of heat and mechanical damage. Hard or soft spots,
brittle rubber, cracking, tears, cuts, abrasions, and exces-
sive swelling indicate deterioration of the rubber.

Pay particular attention to those hoses nearest to high
heat sources such as the exhaust manifold. Inspect hose
routing to be sure hoses do not come in contact with any
heat source or moving component which may cause heat
damage or mechanical wear.

Insure nylon tubing in these areas has not melted or
collapsed.

408

MAINTAINING YOUR VEHICLE