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OPERATOR'S MANUAL
HWH COMPUTER-CONTROLLED
SPACEMAKER ROOM EXTENSION SYSTEM
TOUCH PANEL LEVELING CONTROL
HYDRAULIC ROOM EXTENSION
INTERNET: http: //www.hwhcorp.com
H
W
CORPORATION
LEVELING SYSTEM
500 SERIES
FEATURING:
HYDRAULIC LEVELING
AIR DUMP
STRAIGHT-ACTING JACKS
HWH COMPUTERIZED LEVELING
EXCESS
SLOPE
HYD
LEVEL
NOT IN
PARK/
BRAKE
STORE
DUMP
TRAVEL
OFF
CAUTION!
UNDERSTAND OPERATOR'S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
HWH CORPORATION
(ON I-80, EXIT 267 SOUTH)
2096 MOSCOW ROAD
MOSCOW, IOWA 52760
(800) 321-3494 / (563) 724-3396
H
R
ML10731/MP05.3701/CHA-S
16MAR01
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Summary of Contents for HWH 500 Series
- Page 1 CORPORATION OPERATOR’S MANUAL HWH COMPUTER-CONTROLLED LEVELING SYSTEM 500 SERIES SPACEMAKER ROOM EXTENSION SYSTEM FEATURING: TOUCH PANEL LEVELING CONTROL HYDRAULIC LEVELING AIR DUMP STRAIGHT-ACTING JACKS HYDRAULIC ROOM EXTENSION HWH COMPUTERIZED LEVELING EXCESS SLOPE LEVEL NOT IN PARK/ BRAKE STORE DUMP TRAVEL CAUTION! UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
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Page 2: How To Obtain Warranty Service
HWH CORPORATION personnel will contact you to the problem quickly. If the dealer has difficulty solving determine whether or not your claim is valid. If it is, HWH the problem, he should immediately contact the Customer CORPORATION will authorize repair or replacement of the Service Department, at HWH CORPORATION. -
Page 3: Control Identification
CONTROL IDENTIFICATION "EXCESS SLOPE" LOW BATTERY LIGHT LIGHT FRONT RETRACT BUTTON "NOT IN PARK" LIGHT FRONT EXTEND BUTTON LEVEL LIGHT HWH COMPUTERIZED LEVELING "LEVEL" BUTTON WARNING LIGHTS (4- Red) EXCESS LEVEL SLOPE STORE LIGHT RIGHT SIDE EXTEND BUTTON NOT IN... - Page 4 CONTROL IDENTIFICATION ROOM OPERATOR’S PANEL HYDRAULIC ROOM EXTENSION ROOM CONTROL EXTEND KEY SWITCH SWITCH CAUTION! UNDERSTAND OPERATOR’S MANUAL BEFORE USING. KEEP PEOPLE AND OBSTRUCTIONS RETRACT CLEAR OF ROOM WHEN OPERATING. CONTROL FUNCTIONS KEY SWITCH: The KEY SWITCH controls power to the ROOM ROOM CONTROL SWITCH:The ROOM CONTROL SWITCH CONTROL SWITCH.
- Page 5 OPERATING PROCEDURES GENERAL INSTRUCTIONS If parking on soft ground or asphalt paving, wood blocks or If the "LOW BATTERY" indicator is on, the system should be pads must be placed under the jacks. checked. Battery voltage should be checked, also all connections should be checked.
- Page 6 OPERATING PROCEDURES AUTOMATIC HYDRAULIC LEVELING 1.Place transmission in the recommended position for parking system will automatically extend the jacks to level the vehicle vehicle and set parking brake. Turn the coach engine off. and then extend any remaining jacks until they touch the ground. Turn the ignition to the "ACCESSORY"...
- Page 7 OPERATING PROCEDURES ROOM RETRACT PROCEDURE KEY SWITCH KEY SWITCH ON POSITION ON POSITION EXTEND EXTEND RETRACT RETRACT FIGURE 1 FIGURE 2 CAUTION: KEEP PEOPLE AND OBSTRUCTIONS IMPORTANT: Do NOT hold the ROOM CONTROL SWITCH CLEAR OF THE ROOM WHEN OPERATING. in the RETRACT position for more than ten seconds after the room is fully retracted.
- Page 8 OPERATING PROCEDURES JACK RETRACTION STORE/TRAVEL POSITION EXTEND POSITION FIGURE 3 CAUTION: CAUTION: THE OPERATOR MUST BE SURE THAT DO NOT MOVE THE VEHICLE WHILE THE THERE ARE NO OBJECTS UNDER THE VEHICLE AND THAT LEVELING JACKS ARE STILL IN CONTACT WITH THE GROUND ALL PEOPLE ARE CLEAR OF THE VEHICLE.
- Page 9 (3, FIGURE 2) and the cylinder mounting plate (4, FIGURE 2). The room can then be pulled out far enough to work on the rack sensing valve. Contact HWH Corporation, 1-800-321-3494, for the correct rack sensing valve and cylinder replacement and adjustment instruction sheets.
- Page 10 MANUAL ROOM RETRACT PROCEDURE (WITH SOLENOID VALVES WITH VALVE RELEASE "T" HANDLES) (USE ONLY WHEN THE ROOM WILL NOT RETRACT WITH THE ROOM CONTROL SWITCH) OVERVIEW The room can be retracted manually if a hydraulic or electrical NOTE : The room may move slightly as the SOLENOID VALVES failure prevents the room from being retracted using the ROOM are opened and internal pressure is released.
- Page 11 NOTE: All major components of the system can be replaced with ice. This may cause the leveling system to function with rebuilt parts or can be sent to HWH CORPORATION to improperly. To eliminate this problem, periodically check the be rebuilt, when the system is out of warranty.
- Page 12 NOTE : If any of the above checks or inspections reveal a problem or if there are other problems or questions, con- sult a qualified RV repair center, your vehicle or coach manufac- turer, or HWH CORPORATION (1-800-321-3494) for service or repair. MP45.4525 12JUN97...
- Page 13 TROUBLE SHOOTING ROOM EXTENSION The following is a list of problems, and possible solutions, which might occur to the room extension systems. NOTE : Only qualified technicians should install or repair room systems. A knowledge of hydraulic, welding, the vehicle,s sus- pension and electrical systems is required.
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Page 14: Hydraulic Connection Diagram
HYDRAULIC CONNECTION DIAGRAM 500 SERIES, COMPUTER-CONTROLLED LEVELING SYSTEM WITH A DUAL CYLINDER ROOM EXTENSION WITH RACK SENSING VALVE PRESSURE VALVE RELEASE "T" HANDLES (2) RETURN TO SHUTTLE VALVE ON BOTTOM OF MANIFOLD VALVE RELEASE "T" HANDLES (4) RIGHT LEFT FRONT... - Page 15 HYDRAULIC SCHEMATIC WITH STRAIGHT-ACTING JACKS RELIEF VALVE (ADJUSTABLE ON SOME UNITS) 12 VOLT D.C. HYDRAULIC RELIEF VALVE/ POWER UNIT FLOW SWITCH RETURN PRESSURE PRESSURE/ RETURN SHUTTLE VALVE. STAB. SOL. PRES. SW. VALVE ELECT. 3000 PSI SOL.VALVE SOL.VALVE SOL.VALVE SOL.VALVE CHECK VALVE INNER CHECK...
- Page 16 HYDRAULIC SCHEMATIC DIAGRAM DUAL CYLINDER ROOM EXTENSION SYSTEM W/RACK SENSING VALVE FRONT OF VEHICLE FIXED TO VEHICLE FRONT CYLINDER NOTE: THIS LINE IS PRESSURIZED DURING EXTEND AND RETRACT. NOTE: THIS LINE IS PRESSURIZED DURING EXTEND ONLY. DURING RETRACT, IT IS VENTED TO THE RESERVOIR.
- Page 17 AIR LINE CONNECTION DIAGRAM SUSPENSION AIR BAGS FROM WIRE HARNESS SEE ELECTRICAL AIR DUMP SOLENOID VALVES DIAGRAM FOR ARE ACTIVATED (OPENED) BY CONNECTION A +12 SIGNAL. 4 AIR DUMP SOLENOID VALVES AND 4 HEIGHT CONTROL VALVES ARE SHOWN. THE AIR DUMP VALVE IS TO TEE INTO THE LINE BETWEEN THE AIR BAG AND THE HEIGHT CONTROL VALVE.
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Page 18: Control Box Connection Diagram
CONTROL BOX CONNECTION DIAGRAM PART & SERIAL NUMBER STICKER MASTER JACK WARNING WARN SWITCHES LIGHT L.R. GREEN PARK BRAKE SENSOR BLUE R.R. BLUE R.F. RED ROOM SWITCH EXTEND PURPLE SENSING UNIT R.R. WHITE ROOM SWITCH RETRACT BLACK BATTERY RED IGNITION YELLOW ACCESSORY BROWN WARNING LIGHT CONTROL PURPLE... - Page 19 ELECTRICAL CONNECTION DIAGRAM COMPUTER-CONTROLLED HYDRAULIC LEVELING WITH TOUCH PANEL CONTROL TOUCH PANEL RIBBON HWH COMPUTERIZED LEVELING CABLE EXCESS SEE CONTROL LEVEL SLOPE BOX CONNECTION NOT IN PARK/ BRAKE STORE DUMP DIAGRAM TRAVEL GROUND CAUTION! TO BRAKE LIGHT UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
- Page 20 WIRING DIAGRAM HYDRAULIC MANIFOLD FOR 500 SERIES LEVELING SYSTEMS FLOW SWITCH RIGHT RIGHT LEFT LEFT REAR FRONT FRONT REAR PRESSURE SWITCH STABILIZE SOLENOID MP85.3715 12MAY97...
- Page 21 ELECTRICAL CONNECTION DIAGRAM ONE ROOM EXTENSION SYSTEM DUAL CYLINDER ROOM EXTENSION OPERATORS PANEL (REAR VIEW) ROOM CONTROL SWITCH SWITCH +12 IGNITION PURPLE GROUND BOX CONNECTION STUD THE PURPLE WIRE FROM DIAGRAM THE SWITCH HARNESS CONNECTS TO PIN #12 OF THE ROOM CONTROL BLACK SWITCH.
- Page 22 ELECTRICAL CONNECTION DIAGRAM MASTER AND PUMP RELAY FOR 610 SERIES LEVELING SYSTEMS NOTE: THE (4) DIGIT WIRE NUMBER RELAY B SUPERSEDES ANY AND ALL WIRE CONNECTION DIAGRAM COLORS. FROM HYDRAULIC CABLE TO HARNESS - PUMP (GRAY) 8600 "+" STUD MANIFOLD/PUMP HARNESS FROM HYDRAULIC...
- Page 23 GROUNDING INSTRUCTIONS POWER UNIT/HARNESS 610 SERIES LEVELING SYSTEM WELDED PUMP MOUNT USE GROUNDING STUD AND 3/8" EXTERNAL STAR LOCKWASHERS AS SHOWN. MANIFOLD PRESSURE IMPORTANT: 3/8" STAR LOCKWASHER SWITCH - MUST BE USED BETWEEN GROUNDING (WHITE) SURFACE AND WIRE TERMINALS. GROUND CABLE 6234 STRAP (NOT USED...