Chassis Information ---
Section 10
Cayman 2005
357
Coolant System Maintenance
When performing maintenance, it is also necessary to inspect other components of the cooling system.
Have an inspection performed of the surge tank cap seal and have the cap pressure tested at each oil
change. The charge air cooler and radiator also requires inspection for cracks, broken welds, secure
mounting, and general cleanliness.
It may be necessary to clean the radiator and external coolers more often under certain conditions.
Leaves, twigs, road debris and other contaminants can block the radiator and cooler fins resulting in
reduced cooling system performance. Blockage can vary depending on road conditions, climate, and
regional conditions. Check the radiator and external coolers weekly for blockage, and clean as required.
To clean the radiator and external coolers, compressed air is recommended. In the event that road
grime, oil, or inadequate cleaning with compressed air is encountered, a high pressure washer and
degreaser may be used with caution to avoid excess pressure that can bend the radiator fins.
Refer to the Cummins OEM manual for detailed maintenance and service procedures. These services
include: draining the engine coolant, flushing/cleaning the cooling system, inspecting the water pump
standpipe, replacing the thermostat, gasket and seal, and replacing the coolant and SCA element.
Coolant Hoses:
Rotten, swollen and worn hoses, as well as loose connections, are frequent causes of coolant system
problems. Overheating can be caused by a collapsed hose or a clog caused by rubber shedding from a
rotten hose. Replace any hose found to be cracked, swollen or damaged. Connections should be
inspected periodically and hose clamps tightened.
Inspect
all hoses, clamps, and fittings for leaks due to cracking, softness, and loose clamps/fittings.
Look for signs of fluid leaks, damaged end fittings, ballooning, chafed, kinked, or crushed hoses, and
loose clamps and fittings. Correct any deficiencies found.
Coolant Overheated:
If the engine is overheated, never pour cold coolant into a hot engine. The sudden change in temperature
may crack the cylinder head or block. If the engine is hot, fill slowly to prevent rapid cooling and
distortion of engine castings.
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.
Summary of Contents for Cayman 2005
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Page 76: ...Section 2 Driving Safety Cayman 2005 76 100179D Weight Label...
Page 81: ...Driving Safety Section 2 Cayman 2005 81 020254 Cargo Carrying Capacity Flowchart...
Page 83: ...Driving Safety Section 2 Cayman 2005 83 020255k Actual Worksheet...
Page 84: ...Section 2 Driving Safety Cayman 2005 84 Weight Record Sheet...
Page 85: ...Driving Safety Section 2 Cayman 2005 85...
Page 86: ...Section 2 Driving Safety Cayman 2005 86 010725 010726c VIEWS Front Rear...
Page 87: ...Driving Safety Section 2 Cayman 2005 87 010723f 010724e Roadside Curbside...
Page 95: ...Driving Safety Section 2 Cayman 2005 95 NOTES...
Page 96: ...Section 2 Driving Safety Cayman 2005 96 NOTES...
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Page 108: ...Section 3 Exterior Interior Care Cayman 2005 108 Fabric Specifications Charts...
Page 109: ...Exterior Interior Care Section 3 Cayman 2005 109...
Page 134: ...Section 3 Exterior Interior Care Cayman 2005 134 NOTES...
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Page 165: ...Appliances Section 4 Cayman 2005 165 NOTES...
Page 166: ...Section 4 Appliances Cayman 2005 166 NOTES...
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Page 203: ...Equipment Section 5 Cayman 2005 203 NOTES...
Page 204: ...Section 5 Equipment Cayman 2005 204 NOTES...
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Page 229: ...Water Systems Section 6 Cayman 2005 229 WATER SYSTEM DIAGRAM 040487c Typical Layout...
Page 230: ...Section 6 Water Systems Cayman 2005 230 NOTES...
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Page 250: ...Section 7 LP Gas Systems Cayman 2005 250 NOTES...
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Page 286: ...Section 8 Electrical Systems House Cayman 2005 286 NOTES...
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Page 292: ...Section 9 Electrical Systems Chassis Cayman 2005 292 080427f 080387C 080388c...
Page 315: ...Electrical Systems Chassis Section 9 Cayman 2005 315 ENGINE NO START FLOW CHART...
Page 316: ...Section 9 Electrical Systems Chassis Cayman 2005 316 NOTES...
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Page 376: ...Section 10 Chassis Information Cayman 2005 376 LUBRICATION CHARTS 070166G FRONT...
Page 382: ...Section 10 Chassis Information Cayman 2005 382 METRIC U S CONVERSION CHART...
Page 384: ...Section 10 Chassis Information Cayman 2005 384...
Page 385: ...Chassis Information Section 10 Cayman 2005 385...
Page 386: ...Section 10 Chassis Information Cayman 2005 386...
Page 387: ...Chassis Information Section 10 Cayman 2005 387...
Page 389: ...Cayman 2005 INdex...
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