Section 10
--- Chassis Information
The Executive 2005
434
HEIGHT CONTROL VALVES
Height Control Valves (HCV) inflate or deflate air springs to maintain proper suspension height
throughout the load range. Two Height Control Valves are installed at the rear drive axle to control rear
suspension height and left or right tilt of the motorhome. A separate HCV is installed to control
front suspension height. The three HCVs mount to the main frame of the motorhome, above the
axles, with a linkage rod connecting the valve to the axle.
Actuating components inside of the valves are oil dampened to reduce valve reaction to momentary
suspension bounce and rebound. When a constant suspension change occurs, such as a load change or
weight transfer through a sustained corner, the valve reacts by adding or purging air from the air
springs as needed.
The air springs mount between the axle H-frame assembly and the two main frame rails. Air spring
support plates mount to the main frame and the H-frame. There is a specified distance the air spring
must maintain between the mounting plates. Other than specified distance between the plates will
compromise ride quality and handling, and affect shock absorber travel, drive shaft angle, as well as
various other running gear components.
Should it become necessary to check the suspension ride height, start with the motorhome on a flat
level surface. The air system must be fully charged with the suspension normalized at ride height.
Specified distances may vary plus or minus ¼". Small offset adjustments to the rear valves may be
necessary to compensate for slight tilt. Example: Adjusting the curbside rear height control valve up
will pivot the roadside front corner down.
NOTE:
Drive shaft angle is affected by the suspension ride height. Improper drive shaft
angle can damage suspension or shorten the life of universal joints. Shock
absorbers and air springs are in travel centers at proper ride height. The ignition
must be on for the suspension to operate when equipped with HWH air leveling.
Summary of Contents for Executive 2005
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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...
Page 206: ......
Page 264: ...Section 5 Equipment The Executive 2005 264 NOTES...
Page 266: ......
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...