Section 10
--- Chassis Information
The Executive 2005
488
Inspect
the radiator core and CAC for dirt and debris build-up. Wash any accumulations using
high-pressure water, being careful not to damage the fins from excessive pressure. Any grease or oil
build-up should first be treated with a non-caustic degreaser to ensure a thorough cleaning.
Coolant System - Thawing:
If the coolant system becomes frozen, the motorhome must be towed. Place the motorhome in a
warm area until completely thawed. If the engine is operated when the cooling system is frozen it
will result in engine overheating due to insufficient coolant circulation. Once thawed, check engine,
radiator and related components for damage caused by expansion of frozen coolant.
CHARGE AIR COOLER
The diesel engine uses compression to ignite the fuel/air charge. To increase compression inside the
combustion chamber (resulting in increased power output) a turbocharger is added to the engine. The
turbocharger is a paired housing assembly with impellers inside each housing connected by a com-
mon shaft. One impeller is propelled by the engine exhaust, which drives the other impeller. The func-
tion of the other impeller is to increase compression inside the combustion chamber by forcing air into
the intake manifold. This process works well, however, the intake air charge is heated two different
ways. Through convection by the exhaust gases driving the turbocharger and any time air is com-
pressed heat is produced. This has a negative effect inside the combustion chamber resulting in lost
power potential. Therefore, a Charge Air Cooler (CAC) is installed to cool the intake air before it
enters the engine. The CAC may be mounted to either the top or side of the radiator. The CAC per-
forms the same function as a radiator, cooling air instead of liquid. Ambient air passing through the
CAC will cool the engine intake air charge.
After leaving the turbocharger, intake air is compressed and heated to approximately 300º to
375º F., depending on the engine load and throttle position. Before air enters the intake manifold, the
CAC cools the intake air temperature to the engine manufacturer specifications. Lowered intake air
temperatures reduce exhaust emissions, improve fuel economy and increase horsepower. The CAC will
continually expand and contract up to ¼" as throttle increases and decreases.
Visually inspect the charge air cooler, every six months, for dirt and debris that may be blocking
the fins. If the motorhome develops an oil leak, there is a possibility that the oil will coat the fins of
the CAC. Dust will adhere to the oil film and eventually clog the fins, greatly reducing cooling effi-
ciency. When the oil leak is repaired, the CAC must be thoroughly cleaned.
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Summary of Contents for Executive 2005
Page 14: ......
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Page 30: ...Section 1 General Information The Executive 2005 30 NOTES...
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Page 92: ...Section 2 Driving Safety The Executive 2005 92 Weight Label 100179D...
Page 98: ...Section 2 Driving Safety The Executive 2005 98 020254...
Page 101: ...Driving Safety Section 2 The Executive 2005 101 020263 WEIGHT RECORD SHEET 020262...
Page 102: ...Section 2 Driving Safety The Executive 2005 102 WEIGHT RECORD SHEET 020262...
Page 103: ...Driving Safety Section 2 The Executive 2005 103 010763d 010689d VIEWS Front Rear...
Page 104: ...Section 2 Driving Safety The Executive 2005 104 010687e 010688c Roadside Curbside...
Page 119: ...Driving Safety Section 2 The Executive 2005 119 NOTES...
Page 120: ...NOTES 120 The Executive 2005 Section 2 Driving Safety...
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Page 132: ...Section 3 Exterior Interior Care The Executive 2005 132 Fabric Specifications Charts...
Page 133: ...Exterior Interior Care Section 3 The Executive 2005 133...
Page 134: ...Section 3 Exterior Interior Care The Executive 2005 134...
Page 135: ...Exterior Interior Care Section 3 The Executive 2005 135...
Page 136: ...Section 3 Exterior Interior Care The Executive 2005 136 Ralph Lauren Fabrics Optional Package...
Page 137: ...Exterior Interior Care Section 3 The Executive 2005 137...
Page 138: ...Section 3 Exterior Interior Care The Executive 2005 138...
Page 164: ...Section 3 Exterior Interior Care The Executive 2005 164 NOTES...
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Page 204: ...Section 4 Appliances The Executive 2005 204 NOTES...
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Page 264: ...Section 5 Equipment The Executive 2005 264 NOTES...
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Page 299: ...Water Systems Section 6 The Executive 2005 299 TYPICAL WATER BAY 040496c...
Page 301: ...Water Systems Section 6 The Executive 2005 301 NOTES...
Page 302: ...Section 6 Water Systems The Executive 2005 302 NOTES...
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Page 321: ...LP Gas Systems Section 7 The Executive 2005 321 NOTES...
Page 322: ...Section 7 LP Gas Systems The Executive 2005 322 NOTES...
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Page 380: ...Section 8 Electrical Systems House The Executive 2005 380 Wiring Systems Interfaced...
Page 381: ...Electrical Systems House Section 8 The Executive 2005 381 NOTES...
Page 382: ...Section 8 Electrical Systems House The Executive 2005 382 NOTES...
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Page 419: ...Electrical Systems Chassis Section 9 The Executive 2005 419 ENGINE NO START FLOW CHART...
Page 420: ...Section 9 Electrical Systems Chassis The Executive 2005 420 NOTES...
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Page 523: ...Chassis Information Section 10 The Executive 2005 523 METRIC U S CONVERSION CHART...
Page 525: ...Chassis Information Section 10 The Executive 2005 525...
Page 526: ...Section 10 Chassis Information The Executive 2005 526...
Page 527: ...Chassis Information Section 10 The Executive 2005 527...
Page 529: ...The Executive 2005 Index...
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Page 538: ...Index The Executive 2005 538 NOTES...