HWH 610 SERIES User manual

DUMP
LEVEL
HWH COMPUTERIZED LEVELING
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
EXCESS
SLOPE
NOT IN
PARK/
TRAVEL
CAUTION!
H
CORPORATION
H
W
R
HWH CORPORATION
2096 MOSCOW ROAD
MOSCOW, IOWA 52760
[phone] / [phone]
FEATURING:
TOUCH PANEL CONTROL
HYDRAULIC LEVELING
LEVELING SYSTEM
OPERATOR’S MANUAL
610 SERIES
AUTOMATIC SUSPENSION AIR DUMP
STRAIGHT-ACTING JACKS
DUAL CYLINDER ROOM EXTENSION
STORE
OFF
BRAKE
HWH COMPUTER-CONTROLLED
INTERNET: http: //www.hwhcorp.com
DUAL CYLINDER GENERATOR SLIDE
LATERAL ARM ROOM EXTENSION
(WITH SYNCHRONIZING CYLINDER)
25APR02
ML24254/MP05.5220
(ON I-80, EXIT 267 SOUTH)
SINGLE CYLINDER GUIDED ROOM EXTENSION
AP24840

OPERATING MANUAL
MP15.3000
11MAR08
WARNING !
READ THE ENTIRE OPERATOR’S MANUAL BEFORE OPERATING.
BLOCK FRAME AND TIRES SECURELY BEFORE CRAWLING UNDER VEHICLE. DO NOT USE LEVELING JACKS
OR AIR SUSPENSION TO SUPPORT VEHICLE WHILE UNDER VEHICLE OR CHANGING TIRES. VEHICLE MAY
DROP AND/OR MOVE FORWARD OR BACKWARD WITHOUT WARNING CAUSING INJURY OR DEATH.
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE LEVELING SYSTEM AND ROOM EXTENSION ARE BEING OPER-
ATED.
NEVER PLACE HANDS OR OTHER PARTS OF THE BODY NEAR HYDRAULIC LEAKS. OIL MAY PENETRATE SKIN
CAUSING INJURY OR DEATH.
WEAR SAFETY GLASSES WHEN INSPECTING OR SERVICING THE SYSTEM TO PROTECT EYES FROM DIRT,
METAL CHIPS, OIL LEAKS, ETC. FOLLOW ALL OTHER APPLICABLE SHOP SAFETY PRACTICES.
IMPORTANT: IF COACH IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE
OPERATING LEVELING SYSTEM.
HOW TO OBTAIN WARRANTY SERVICE
THIS IS NOT TO BE INTERPRETED AS A STATEMENT OF WARRANTY
HWH CORPORATION strives to maintain the highest level of
customer satisfaction. Therefore, if you discover a defect or
problem, please do the following:
[phone] OR [phone]. Give your name and
coach was purchased, or the date of system installation,
Notify the dealership where you purchased the
vehicle or had the leveling system installed. Dealership
management people are in the best position to resolve
the problem quickly. If the dealer has difficulty solving
the problem, he should immediately contact the Customer
Service Department, at HWH CORPORATION.
If your dealer cannot or will not solve the problem,
notify the Customer Service Department:
HWH CORPORATION 2096 Moscow Rd. Moscow IA. 52760
address, coach manufacturer and model year, date the
SECOND:
FIRST:
authorization of an independent service facility, to be
defective part, either by appointment at the factory or by the
CORPORATION will authorize repair or replacement of the
determine whether or not your claim is valid. If it is, HWH
HWH CORPORATION personnel will contact you to
during business hours (8:00 a.m. till 5:00 p.m. c.s.t.).
description of the problem, and where you can be reached
determined by HWH CORPORATION. All warranty repairs
must be performed by an independent service facility
authorized by HWH CORPORATION, or at the
HWH CORPORATION factory, unless prior written approval
has been obtained from proper HWH CORPORATION
personnel.

CONTROL IDENTIFICATION
MP25.5205
14NOV01
DUMP
LEVEL
HWH COMPUTERIZED LEVELING
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
EXCESS
SLOPE
NOT IN
PARK
TRAVEL
OFF CAUTION!
STORE
"EXCESS SLOPE"
LIGHT
"NOT IN PARK" LIGHT
LEVEL LIGHT
"LEVEL" BUTTON
"STORE" BUTTON
"DUMP" BUTTON
"OFF" BUTTON
"TRAVEL" LIGHT
LOW BATTERY
LIGHT FRONT RETRACT BUTTON
FRONT EXTEND BUTTON
WARNING LIGHTS (4- Red)
RIGHT SIDE EXTEND BUTTON
RIGHT SIDE RETRACT BUTTON
LEVELING LIGHTS (4- Yellow)
REAR EXTEND BUTTON
REAR RETRACT BUTTON
STORE LIGHT
LEFT SIDE EXTEND BUTTON LEFT SIDE RETRACT BUTTON
"OFF" BUTTON:
operation.
"LEVEL" BUTTON:
"STORE" BUTTON:
"STORE" button. This button is used to automatically retract
the jacks.
"DUMP" BUTTON:
from the vehicle suspension. See MANUAL AIR DUMP Section.
WARNING LIGHTS:
"EXCESS SLOPE" LIGHT:
leveling system cannot level the vehicle.
"NOT IN PARK/BRAKE" LIGHT:
the panel is on and the hand/auto brake is not set.
"TRAVEL" LIGHT:
ignition is on, when the jacks are retracted and there are no
red WARNING lights on.
LOW BATTERY LIGHT:
controller senses low voltage.
MASTER "JACKS DOWN" WARNING LIGHT:
mounted in the dash separate from the touch panel. It will be
on when any one or more jacks are extended and the ignition
is "ON".
BUZZER:
master "JACKS DOWN" warning light is on.
CONTROL FUNCTIONS
INDICATOR LIGHTS
CONTROL BUTTONS
Push the "OFF" button to stop hydraulic
The store indicator light is above the
This is a manual button for dumping air
This indicator will light when the
This indicator will light when
This indicator light will be on when the
This indicator will be on when the
This is a light
This is a jacks down warning. It will sound if the
EXTEND BUTTONS (UP ARROWS) :
RETRACT BUTTONS (DOWN ARROWS) :
LEVELING LIGHTS :
These buttons will
extend their respective jack pairs to lift the vehicle.
These buttons
will retract their respective jack pairs to lower the vehicle.
The four yellow indicating lights are
level sensing indicators. When a yellow light is on, it indicates
that its side, end, or corner of the vehicle is low. No more than
two lights should be on at the same time.
This is the on button and automatic
The four red lights surrounding the
yellow level indicators are jacks down WARNING lights.
They are functional only when the ignition is in the "ON" or
"ACC" position, the system is on, and the jacks are extended
2 or more inches.operation button. The on indicator light is above the
HYD
"HYD" button.

CONTROL IDENTIFICATION
03MAY99
MP25.9421
ON
GEN
SLIDE
OFF RETRACT
GEN
SLIDE
EXTEND
OFF
ROOM
SLIDE
ON
RETRACT
SLIDE
ROOM
EXTEND
GENERATOR SLIDE
MASTER SWITCH MASTER SWITCH
ROOM EXTENSION
CONTROL SWITCH
ROOM EXTENSION
GENERATOR SLIDE
CONTROL SWITCH
GENERATOR SLIDE MASTER SWITCH:
THIS SWITCH MUST BE ON BEFORE THE
GENERATOR SLIDE CAN BE EXTENDED OR
RETRACTED.
ROOM EXTENSION MASTER SWITCH:
THIS SWITCH MUST BE ON BEFORE THE
ROOM CAN BE EXTENDED OR RETRACTED.
GENERATOR SLIDE CONTROL SWITCH:
THIS SWITCH IS USED TO EXTEND OR RETRACT
THE GENERATOR SLIDE.
ROOM EXTENSION CONTROL SWITCH:
THIS SWITCH IS USED TO EXTEND OR RETRACT
THE ROOM EXTENSION.

MP35.310C
05MAY99
OPERATING PROCEDURES
GENERAL INSTRUCTIONS
MANUAL AIR DUMP
PREPARATION FOR TRAVEL
If parking on soft ground or asphalt paving, wood blocks or
pads must be placed under the jacks.
Press the "OFF" button and turn the ignition switch "OFF" at
any time to stop the operation of the system.
Any time a hydraulic leveling process is interrupted, retract the
jacks according to the JACK RETRACTION Section and then
restart the leveling process.
If the "LOW BATTERY" indicator is on, the system should be
checked. Battery voltage should be checked, also all connections
should be checked.
The "DUMP" button is used to manually dump air from the
vehicles suspension system. This will lower the vehicle. It
CAUTION: IF DUMPING AIR FROM THE SUSPEN-
SION, THE COACH SHOULD NOT BE MOVING AT A SPEED
GREATER THAN 5 MPH.
The "DUMP" button will work if the ignition is on and the leveling
system is off, or if the leveling system is on.
The "DUMP" button is a momentary button and will dump air
only while the button is being pushed.
IMPORTANT: If the air is not completely exhausted from the
suspension or the vehicles engine is running, the vehicle will
return to the proper travel height when the "DUMP" button is
released.
the "TRAVEL" light must be on. If lights are not correct for
travel, retract jack as described in the JACK RETRACTION
Section.
green "TRAVEL" light is not lit, the system needs to be serviced.
The suspension air bags should be inflated and the vehicle
should be at the proper ride height before traveling.
CAUTION:
If the jacks cannot be retracted according to the JACK RETRAC-
TION Section, retract the jacks according to the MANUAL JACK
RETRACTION Section. The system should then be checked.
can be used while the vehicle is moving or stationary.
CAUTION: DO NOT MOVE THE VEHICLE IF A WARN-
ING LIGHT OR BUZZER IS ON.
If the hand/auto brake is not set when the "I" button is pressed,
the "NOT IN PARK/BRAKE" light will come on and the system
will not operate.
Before traveling, the red jack WARNING lights must be off and
If the jacks are retracted, but a red WARNING light is lit or the
THE LEVELING JACKS ARE STILL IN CONTACT WITH THE
DO NOT MOVE THE VEHICLE WHILE
GROUND OR IN THE EXTENDED POSITION. THIS VEHI-
ING THE VEHICLE WITH THE LEVELING JACKS EXTENDED
VEHICLE AND CREATE A DRIVING HAZARD. DO NOT RELY
CLE IS EQUIPPED WITH STRAIGHT ACTING JACKS. MOV-
CAN CAUSE SEVERE DAMAGE TO THE JACKS AND OR
SOLELY UPON WARNING LIGHTS. IT IS THE OPERATOR’S
RESPONSIBILITY TO CHECK THAT ALL JACKS ARE FULLY RE-
TRACTED INTO THE STORE/TRAVEL POSITION AND THE
VEHICLE IS AT THE PROPER RIDE HEIGHT FOR TRAVEL-
ING.
The room extension and generator slides should be fully re-
tracted before moving the vehicle.

05MAY99
OPERATING PROCEDURES
MP35.311C
place pads under the jacks if the ground will not support the
3. At this time, the operator may want to check the jacks and
Turn the ignition to the "ACCESSORY" position.
vehicle.
AUTOMATIC HYDRAULIC LEVELING
to level the coach, the "EXCESS SLOPE" indicator light will
EXCESS SLOPE SITUATION: In the event the jacks are unable
5. Turn the ignition switch to the "OFF" position.
NOTE:
erratic operation and inhibit proper leveling of the vehicle.
Running the vehicle engine during leveling can cause
1. Place transmission in the recommended position for park-
ing vehicle and set parking brake. Turn the coach engine off.
2. Press the "HYD" button to enter the hydraulic operation mode.
The "HYD" indicator light will glow steady.
indicator lights will remain on. The "I" indicator light will con-
tinue to blink for 2 minutes, then the system will shut off. The
system will NOT stabilize the vehicle if the "EXCESS SLOPE"
light comes on. Store the jacks according to the JACK RE-
TRACTION Section. Move the vehicle to a more level posi-
tion or level the vehicle as close as possible according to the
MANUAL HYDRAULIC OPERATION Section.
come on. The pump will shut off. One or two yellow LEVEL
IMPORTANT:
MANUAL HYDRAULIC OPERATION
off. Turn the ignition to the "ACCESSORY" position.
erratic operation and inhibit proper leveling of the vehicle.
the vehicle on the jacks.
NOTE:
1. Place transmission in the recommended position for parking
the vehicle, and set the parking brake. Turn the vehicle engine
Running the vehicle engine during leveling can cause
3. Place pads under the jack feet if the ground will not support
4. Press and hold the "DUMP" button until all air has been ex-
hausted from the suspension system.
Do not continue to push a EXTEND button for
more than ten seconds after that pair of jacks are fully extend-
ed.
6. When leveling is completed, push the "OFF" button on the
leveling panel and turn the ignition switch to the "OFF" position.
4. Press the "HYD" button a second time. The "HYD" light will
start to flash. The system will begin to dump air from the ve-
hicle suspension. After approximately 45 seconds, the system
will automatically extend the jacks to level the vehicle and then
extend any remaining jacks until they touch the ground. After
the system has finished leveling and stabilizing, and has com-
pleted the air dump cycle, it will automatically shut off.
2. Press the "HYD" button. The indicator light will glow steady.
5. The vehicle may be leveled using the manual EXTEND but-
tons on the right half of the panel. If a yellow LEVEL sensing
light is on, that side or end of the vehicle is low. ALWAYS LEV-
EL THE VEHICLE SIDE TO SIDE EXTINGUISHING ANY SIDE
YELLOW LEVEL LIGHTS BEFORE LEVELING THE VEHICLE
FRONT TO REAR. Jacks will extend (or retract) in pairs to raise
(or lower) a side or end of the vehicle. Any jack not used for
leveling can be extended to the ground until the vehicle is lifted
slightly. This provides additional stability against wind and ac-
tivity in the vehicle.

24JAN02
OPERATING PROCEDURES
MP35.312C
ROOM EXTENSION EXTEND PROCEDURE
CAUTION: OPERATING THE ROOM OR
GENERATOR SLIDE WITH ANY ROOM-LOCKING DEVICES
LOCKED OR THE MANUAL-RETRACT WINCH ATTACHED
CAN CAUSE PERSONAL INJURY AND VEHICLE DAMAGE.
IT IS THE OPERATOR’S RESPONSIBILITY TO ENSURE
THAT ALL ROOM-LOCKING DEVICES AND THE MANUAL-
RETRACT WINCH ARE DISENGAGED BEFORE
IMPORTANT: The park brake must be set and the vehicle
should be leveled before the room is extended or retracted.
1. Follow the LEVELING AND STABILIZING PROCEDURE.
2. Unlock all room-locking devices.
NOTE: If the MANUAL RETRACT WINCH is attached to the
room remove it before extending the room.
CAUTION: KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM AND GENERATOR SLIDE WHEN
OPERATING.
NOTE: Make sure there is adequate clearance to fully
extend the room.
3. Turn the ignition switch to "ACCESSORY".
4. Press the "HYD" button on the leveling system control
panel if the POWER ON light is not illuminated. Refer to the
CONTROL IDENTIFICATION page.
NOTE: To operate the room, the POWER ON light and
WARNING lights must be illuminated. Running the room,
will interrupt leveling procedures.
5. Push the ROOM EXTENSION MASTER SWITCH to the
"ON" position. Refer to the CONTROL IDENTIFICATION
6. To extend the room, press and hold the
ROOM EXTENSION SWITCH in the "EXTEND" position
until the room is fully extended.
NOTE: Releasing the CONTROL SWITCH will halt the
operation of the room.
7. Push the ROOM EXTENSION MASTER SWITCH to the
"OFF" position.
8. Press the "OFF" button on the leveling
9. Turn the ignition switch off.
OPERATING THE ROOM.
page.
system control panel.
after the room is fully extended or stops moving.
in the "EXTEND" position for more than ten seconds
of the room, do not reverse direction of the room until
after the room is fully extended. This assures proper
Hold the switch to "EXTEND" three or four seconds
pressurization of the cylinders.
Do not hold the ROOM CONTROL SWITCHIMPORTANT:
NOTE:
During normal operation
the room is fully extended. If necessary, the direction
of the room may be reversed, but watch for binding of
the room. If the direction of the room has been
reversed, DO NOT re-extend the room until the room
has been fully retracted.
If either side of the room stops moving, release the
room control switch immediately. DO NOT force the
room. DO NOT reverse direction of the room, contact
HWH Customer Service for assistance 1-800-321-3494.

06FEB02
OPERATING PROCEDURES
MP35.314C
ROOM EXTENSION RETRACT PROCEDURE
CAUTION: KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF THE ROOM AND GENERATOR SLIDE WHEN
OPERATING.
1. Turn the ignition switch to "ACCESSORY".
2. Press the "HYD" button on the leveling system control
if the POWER ON light is not illuminated.
3. Push the ROOM EXTENSION MASTER SWITCH to the
"ON" position.
4. To retract the room press and hold the
ROOM CONTROL SWITCH in the "RETRACT" position
until the room is fully retracted.
NOTE: The room extension can be retracted after the
leveling system is put in the STORE mode. This will interrupt
the STORE mode until the CONTROL SWITCH is released.
The leveling system will continue to STORE after the switch
NOTE: Releasing the CONTROL SWITCH will halt the
operation of the room.
5. Push the ROOM EXTENSION MASTER SWITCH to the
"OFF" position.
6. Press the "OFF" button on the leveling system panel or let
the leveling system continue to store.
7. Turn the ignition switch off.
IMPORTANT:
8. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
Room-locking devices should be locked
while traveling.
NOTE: To retract the room the POWER ON light must be
illuminated. A WARNING light needs to be on.
is released.
HWH Customer Service for assistance 1-800-321-3494.
room. DO NOT reverse direction of the room, contact
room control switch immediately. DO NOT force the
If either side of the room stops moving, release the
after the room is fully retracted or stops moving.
in the "RETRACT" position for more than ten seconds
Do not hold the ROOM CONTROL SWITCH
reversed, DO NOT retract the room until the room
the room. If the direction of the room has been
of the room may be reversed, but watch for binding of
the room is fully retracted. If necessary, the direction
of the room, do not reverse direction of the room until
During normal operation
Hold the switch to "RETRACT" three or four seconds
after the room is fully retracted. This assures proper
has been fully extended.
pressurization of the cylinders.
IMPORTANT:
NOTE:

19MAY99
OPERATING PROCEDURES
MP35.322C
GENERATOR SLIDE EXTEND PROCEDURE
CAUTION:
CAUTION: KEEP PEOPLE AND OBSTRUCTIONS
2. Turn the ignition switch to "ACCESSORY".
NOTE:
OPERATING THE ROOM OR GENER-
ATOR SLIDE WITH ANY ROOM-LOCKING DEVICES LOCK-
ED OR THE MANUAL-RETRACT WINCH ATTACHED CAN
CAUSE PERSONAL INJURY AND VEHICLE DAMAGE. IT
IS THE OPERATOR’S RESPONSIBILITY TO ENSURE THAT
ALL ROOM-LOCKING DEVICES AND THE MANUAL-RETRACT
Make sure there is adequate clearance to fully extend
the room or generator slide.
WINCH ARE DISENGAGED BEFORE OPERATING THE ROOM.
GENERATOR SLIDE RETRACT PROCEDURE
CAUTION:
1. Turn the ignition switch to "ACCESSORY".
KEEP PEOPLE AND OBSTRUCTIONS
1. Removing any locking devices from the generator slide.
CLEAR OF GENERATOR SLIDE WHEN OPERATING.
NOTE: To operate the generator slide the ignition key must
be in the "ON" or "ACC" position. The leveling system does
not have to be on and the vehicle does not have to be level.
Running the generator slide will interrupt leveling procedures.
3. Push the GENERATOR SLIDE MASTER SWITCH to the
"ON" position. Refer to the CONTROL IDENTIFICATION page.
4. To extend the generator slide, press and hold the GENER-
ATOR SLIDE CONTROL SWITCH in the "EXTEND" position.
When the slide is fully extended, release the CONTROL SWITCH.
IMPORTANT: Do not hold the CONTROL SWITCH in the
"EXTEND" position for more than ten seconds after the slide
is fully extended or stops moving. IF EITHER SIDE OF THE
SLIDE STOPS MOVING, RELEASE THE CONTROL SWITCH
IMMEDIATELY.
NOTE: Releasing the CONTROL SWITCH will halt the oper-
ation of the generator slide.
5. Push the GENERATOR SLIDE MASTER SWITCH to the
"OFF" position.
6. Turn off the ignition switch.
CLEAR OF THE GENERATOR SLIDE WHEN OPERATING.
2. Push the GENERATOR SLIDE MASTER SWITCH to the
"ON" position.
NOTE: To retract the generator slide the ignition key must be
in the "ON" or "ACC" position.
3. To retract the generator slide press and hold the CONTROL
SWITCH in the "RETRACT" position. When the generator is fully
retracted, release the CONTROL SWITCH.
NOTE: The generator slide can be retracted after the leveling
system is put in the STORE mode. This will interrupt the STORE
mode until the CONTROL SWITCH is released. The leveling
system will continue to STORE after the switch is released.
IMPORTANT: Do not hold the GENERATOR SLIDE CONTROL
SWITCH in the "RETRACT" position for more than ten sec-
onds after the room or slide is fully retracted or stops moving.
IF EITHER SIDE OF THE GENERATOR SLIDE STOPS
MOVING, RELEASE THE CONTROL SWITCH IMMEDI-
ATELY.
NOTE: Releasing the CONTROL SWITCH will halt the opera-
tion of the generator slide.
4. Push the GENERATOR SLIDE MASTER SWITCH to the
"OFF" position.
5. Turn the ignition switch off.
6. If the generator slide will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
IMPORTANT: Room-locking devices should be locked while
traveling.

MP35.324C
06MAY99
OPERATING PROCEDURES
JACK POSITIONS
JACK RETRACTION
while the "STORE" indicator light is blinking. DO NOT push
DO NOT interrupt power to the leveling system
MANUAL JACK RETRACTION Section.
to store for thirty (30) minutes, then shut down regardless of
red WARNING light does not go out, the system will continue
the four individual red WARNING lights are out. If any one
3. The system will automatically shut down six minutes after
LEVELING JACKS OR THE ROOM EXTENSION ARE STILL
4. If jacks cannot be retracted by the above procedure see
IN CONTACT WITH THE GROUND OR IN THE EXTEND
POSITION. THIS VEHICLE IS EQUIPPED WITH STRAIGHT-
NOTE:
EXTEND POSITION STORE/TRAVEL POSITION
THE OPERATOR MUST BE SURE THAT
THERE ARE NO OBJECTS UNDER THE VEHICLE AND THAT
ALL PEOPLE ARE CLEAR OF THE VEHICLE.
1. Start the engine to build air pressure in the suspension sys-
Pushing the ROOM CONTROL SWITCH to "RETRACT"
will interrupt the STORE mode. The system will continue to
STORE after the ROOM CONTROL SWITCH is released.
IMPORTANT:
the "OFF" button or turn the ignition key. The system must be
allowed to completely finish the STORE mode. If the engine was
started before putting the system in the STORE mode, the vehicle
may be moved when the jacks are in the STORE/TRAVEL position.
This will not interrupt the STORE procedure.
CAUTION: DO NOT MOVE THE VEHICLE WHILE THE
ACTING JACKS AND A ROOM EXTENSION. MOVING THE
VEHICLE WITH THE LEVELING JACKS AND/OR THE ROOM
EXTENDED CAN CAUSE SEVERE DAMAGE TO THE JACKS
OR THE VEHICLE AND CREATE A DRIVING HAZARD. DO NOT
RELY SOLELY ON THE WARNING LIGHTS. IT IS THE OPERATOR’S
RESPONSIBILITY TO CHECK THAT ALL JACKS AND THE ROOM EX-
TENSION ARE FULLY RETRACTED INTO THE STORE/TRAVEL POSI-
TION.
the WARNING lights condition.
CAUTION:
2. Press the "STORE" button. The STORE indicator light will
flash. As each jack retracts, its red WARNING light will go out.
The vehicle can be moved as soon as the red WARNING lights
are out and the green "TRAVEL" light is on, providing the jacks are
in the STORE/TRAVEL position and the room is fully retracted. IT IS THE OPERATOR’S RESPONSIBILITY TO CHECK
THAT THE VEHICLE HAS RETURNED TO THE PROPER RIDE
HEIGHT FOR TRAVELING BEFORE MOVING THE VEHICLE.
tem. Press the "HYD" button and store the jacks immediately.

OPERATING PROCEDURES
MP35.325C
06MAY99
CAUTION:
MANUAL JACK RETRACTION
2. Allow clearance for vehicle to lower.
described in Step 3.
5. Check that all four jacks are now retracted.
7. The system should now be repaired before using again.
NOTE: Use the valve release "T" handles for retracting only
if the "STORE" button on the control panel will not retract the
jacks for travel.
KEEP AWAY FROM THE WHEELS, DO
NOT CRAWL UNDER THE VEHICLE, KEEP A SAFE DIS-
TANCE IN FRONT AND REAR OF VEHICLE. THE VEHI-
CLE MAY DROP AND/OR MOVE FORWARD OR BACK-
WARD WITHOUT WARNING AS THE VALVE RELEASE
IS OPERATED.
1. Locate the 4 valve release "T" handles on the solenoid valves.
The solenoid valves are located on the pump/valve assembly.
3. Retract the rear jacks by opening the two outer valves. Slow-
ly turn the "T" handles counterclockwise. The handles may turn
easily at first, but as an internal spring is compressed, turning
may become more difficult. The valves need only to be opened
enough to retract the jack.
4. Retract the front jacks by opening the two center valves as
6. Close the valves by turning the release handles clockwise.
Once the internal spring tension has been released, the hand-
les will turn free for several turns. Once the "T" handles are snug,
DO NOT tighten the handles past this point as internal damage may
occur to the solenoid.
"T" HANDLES
VALVE RELEASE
PUMP/MANIFOLD
ASSEMBLY SHUTTLE
VALVE
BREATHER CAP/
TANK FILL

MP35.952D
01MAY02
MANUAL ROOM AND GENERATOR SLIDE RETRACT PROCEDURE
OVERVIEW
1. Retract jacks following the LEVELING SYSTEM
RETRACT PROCEDURE.
2. Locate the HYDRAULIC PUMP/MANIFOLD unit.
VALVES are opened and internal pressure is released.
WINCH
WINCH STRAP
WINCH HANDLE
RATCHET LEVER
HOOK
MANUAL RETRACT WINCH
5. Slowly winch the room in by turning the WINCH HANDLE
clockwise. The RATCHET LEVER should produce a loud, sharp,
clicking noise.
in the hydraulic fluid and make winching more difficult.
CAUTION:
ON
OFF
HYDRAULIC PUMP/MANIFOLD
NOTE: The room may move slightly as the SOLENOID
NOTE :
NOTE: Winching the room in quickly will raise pressure
IMPORTANT:
6. When the room is fully retracted, engage the room locking
devices. Leave the retract winch engaged and the solenoid
CAUTION: THE ROOM EXTENSION SOLENOID
VALVE RELEASE NUTS MUST BE IN THE OPEN
POSITION WHEN THE MANUAL RETRACT WINCH IS
7. The system should be repaired before using again.
CAUTION: THE MANUAL RETRACT WINCH IS
OPERATE THE MANUAL RETRACT
WINCH BY HAND POWER ONLY. IF THE WINCH
CANNOT BE CRANKED EASILY WITH ONE HAND IT IS
PROBABLY OVERLOADED. IF WINCHING BECOMES
TOO DIFFICULT STOP AND CHECK FOR OBSTRUCTIONS
OR RESTRICTIONS ON THE ROOM AND ROOM
LEVELING SYSTEM MANIFOLD NOT SHOWN
SOLENOID VALVES
VALVE
RELEASE
NUT NUT
VALVE
RELEASE
3. Open the Solenoid Valves by slowly turning the valve
release nuts counter clockwise using the 1/4" nut driver
Only open the valves enough to retract NOTE: After repairs are made, when
closing the VALVE RELEASE NUTS, do
When manually retracting the room, make sure
the jacks are retracted before retracting the room.
EQUIPPED FOR MANUALLY RETRACTING THE ROOM
ONLY. IT IS NOT TO BE USED FOR LIFTING OR ANY
OTHER APPLICATION. HIGH FORCES ARE CREATED
WHEN USING A WINCH, CREATING POTENTIAL SAFETY
HAZARDS. FAILURE TO FOLLOW ALL CAUTIONS AND
INSTRUCTIONS MAY CAUSE FAILURE OF THE MANUAL
RETRACT WINCH OR CONNECTIONS RESULTING IN
DAMAGE OR PERSONAL INJURY. MAINTAIN FIRM GRIP
ON THE WINCH HANDLE AT ALL TIMES. NEVER
RELEASE THE HANDLE WHEN RATCHET LEVER IS IN
THE OFF POSITION AND THE WINCH IS LOADED. THE
WINCH HANDLE COULD SPIN VIOLENTLY AND CAUSE
PERSONAL INJURY. CHECK THE WINCH AND STRAPS
FOR DAMAGE OR WEAR, AND CHECK FOR PROPER
RATCHET OPERATION ON EACH USE OF THE WINCH.
DO NOT USE IF DAMAGED OR WORN.
supplied.
the room. DO NOT turn the release nuts more than
4 and 1/2 turns. Turning the nuts more could damage
the valves.
with the Operators Manual. As of APRIL 2002 the
NOTE: Prior to APRIL 2002 a 1/4" Nut Driver was sent
Cap. See the back page of this manual for further info.
1/4" Nut Driver has been incorporated into the Breather
4. Locate the MANUAL RETRACT WINCH and connect
it to the room according to the vehicle manufacturer’s
instructions. To extend the WINCH STRAP firmly grasp
WINCH HANDLE, place RATCHET LEVER in its OFF
position, and slowly rotate the WINCH HANDLE
counter clockwise, keeping a firm grip on the handle. When
enough WINCH STRAP is extended, place the RATCHET
LEVER in its ON position and slowly rotate the WINCH
HANDLE clockwise until the RATCHET LEVER locks.
EXTENSION MECHANISM.
valves open.
ENGAGED.
(WITH SOLENOID VALVES WITH VALVE RELEASE NUTS)
(USE ONLY WHEN THE ROOM WILL NOT RETRACT WITH THE ROOM CONTROL SWITCH)
not over tighten the nuts.
IMPORTANT: If the vehicle is not equipped with a winch,
DO NOT use other pulling devices to retract the room.
Follow steps 2 and 3 and try pushing the room in.
Contact the vehicle manufacturer or HWH Customer
Service at 1-800-321-3494 or 563-724-3396 for assistance.
The room can be retracted manually if a hydraulic or electric
failure prevents the room from being retracted using the
CONTROL SWITCH. For normal retract sequence see the
ROOM SLIDE RETRACT PROCEDURES. Refer to the
vehicle manufacturer for storage location of the winch
and information for connecting the winch to the room.

MP45.501C
31JAN01
MAINTENANCE
UNUSUAL CONDITIONS
OIL LEVEL
ELECTRICAL SYSTEM
OPERATIONAL CHECK
Review the operator manual and run the system in the
automatic and manual mode. Note any abnormal operation.
Check that the vehicle is level when all the yellow LEVEL
indicator lights are out.
The level sensing unit has as accuracy tolerance of
+ or - 1 inch side to side, and + or - 5.4 inches front to rear
on a 36 foot vehicle.
can cause erratic operation or damage components.
Contact your dealer or HWH Corporation for assistance.
Review the JACK RETRACTION section.
Check the air dump system by using the manual "DUMP"
button according to the MANUAL AIR DUMP section. If the
system will not dump air or return to the proper ride height,
contact your dealer or HWH Corporation.
NOTE:
FLUID: HWH Specialty Hydraulic Oil is recommended. In an
brake fluid or hydraulic jack fluid. Use of these can damage
and can cause staining should a leak occur. DO NOT USE
Dexron automatic transmission fluid contains red dye
emergency Dexron automatic transmission fluid can be used.
seals.
NOTE:
It is important that the four leveling jacks and the room and
generator slides are fully retracted before checking the
hydraulic oil level. To check the oil supply, remove the
breather cap from the top of the hydraulic resevoir. The oil
level should be approximately one inch below the top of the
reservoir when adequately filled.
The batteries should be in good condition and fully charged.
Weak batteries can cause erratic operation. Battery cable
terminals and battery posts and connections should be kept
clean.
All electrical connections, especially ground connections,
should be clean, tight, free from corrosion and protected
from weathering.
If driving conditions are unusually muddy, the jacks may
become caked or clogged with mud. This condition may
hamper the proper operation of the leveling system. This
problem may be prevented or remedied by cleaning off each
leveling jack if they become excessively muddy.
In wet or icy weather leveling jacks may become encrusted
with ice. This may cause the leveling system to function
improperly. To eliminate this problem, periodically check the
leveling jacks and break loose any ice which may be
causing improper operation.
Do not move the vehicle while the leveling jacks are still in
contact with the ground. Retract the jacks according to the
"JACK RETRACTION" section and then visually check to
see if the leveling jacks have returned to the
STORE/TRAVEL position.
NOTE: All major components of the system can be replaced
with rebuilt parts or can be sent to HWH CORPORATION to
be rebuilt, when the system is out of warranty.
Check that all lights work according to the INDICATOR
LIGHT section. Correct function of the four red WARNING
lights is essential to the correct operation of the system.
If the red LOW BATTERY indicator light comes on, the
electrical system should be checked. If the light comes on,
the operation of the system is not interrupted, but low voltage
Make sure the jacks will fully retract to the store position.
Jacks should not interfere with any part of the vehicle when
in the store position.
With the jacks extended, check that the jacks can be
retracted using the "T" handles on the solenoid valves.
Refer to the MANUAL JACK RETRACTION section.

MAINTENANCE
"NOT IN PARK/BRAKE" CHECK
LEVEL SENSING UNIT ADJUSTMENT
SURFACE
MOUNTING
BELOW THE SURFACE MOUNTING
SCREWS (3)
REAR
THIS
SIDE
ON TOP
STICKER
UP
LEVEL SENSING UNIT
SPRINGS (3)
CAUTION: WHEN MAKING THIS CHECK, BLOCK
THE VEHICLES WHEELS SECURELY SO THE VEHICLE
CANNOT ROLL FORWARD OR BACKWARD.
reveal a problem or if there are other problems or
questions, consult a qualified RV repair center, your
vehicle or coach manufacturer, or HWH CORPORATION
NOTE: If any of the previous checks or inspections
MP45.5050
20JAN03
Set the park brake. Switch the ignition to "ACCESSORY" or
"ON" position. Press the "I" button one time. Release the
parking brake and confirm that the "NOT IN PARK/BRAKE"
indicator light comes on. Reset the parking brake.
The "NOT IN PARK/BRAKE" indicator light should go out.
Switch the ignition to "OFF".
Level the vehicle by placing a circular bubble level in the
center of the freezer floor or location within the vehicle that
is to be level. With the vehicle level, adjust the sensing unit
until all yellow lights are off. This is done by drawing up the
corresponding screw if the sensing unit is mounted below
Bump the sensing unit to see that it is settled tight against
screw if the sensing unit is mounted above the surface.
the surface as shown or backing out the corresponding
all three screw heads and still indicates that the unit is level.
BELOW THE SURFACE MOUNTING
ELECTRONIC LEVEL SENSING UNIT
MOUNTING SURFACE
FRONT
UP
THIS
SIDE
SPRINGS (3)
SCREWS (3)
for service or repair.

BREATHER CAP - DIPSTICK - 1/4" NUT DRIVER
MP85.999X
20JAN10
VALVE RELEASE
NUT 1 1/2" DIAMETER
SOLENOID VALVE
NOTE: DO NOT turn the valve
release nut more than 4 and 1/2
(four and one half) turns counter
clockwise. Damage to the valve
may result.
OIL LEVEL
BREATHER CAP
OIL LEVEL GROOVES
1/4" NUT DRIVER
NOTE: THE BREATHER CAP IS LOCATED
ON THE TOP SIDE OF THE POWER UNIT RESERVOIR.
IMPORTANT: PRIOR TO REMOVING THE BREATHER CAP,
EITHER TO CHECK THE OIL LEVEL OR TO USE THE 1/4" NUT DRIVER,
CLEAN ANY DEBRIS FROM THE TOP OF THE RESERVOIR.
INCLUDING DEBRIS INSIDE THE 1/4" NUT DRIVER.
REMOVE ANY PAINT CHIPS OR OTHER DEBRIS FROM THE DIPSTICK
BEFORE RETURNING THE BREATHER CAP TO THE RESERVOIR,
VALVE RELEASE
NUT
to the valve may result.
turns counter clockwise. Damage
NOTE: DO NOT turn the valve
release nut more than 2 full
PLASTIC PLUG
REMOVE TO
GAIN ACCESS
TO THE 1/4"
VALVE RELEASE
NUT
SOLENOID VALVE
2 1/4" DIAMETER