HWH 725 SERIES User manual

OPERATOR’S MANUAL
ML54062/MP04.339
2
23JUL1
4
BI-AXIS Touch Panel Control
FEATURING:
HWH CORPORATION
(On I-80, Exit 267 South)
2096 Moscow Road | Moscow, Iowa 52760
Ph: 800/321-3494 (or) 563/724-3396 | Fax: [phone]
www.hwh.com
R
Straight-Acting/Pivoting (Power-Extend/Spring-Retract) Jacks
R
RETRACT
EXTEND
HWH COMPUTERIZED LEVELING
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
CANCEL
STORE
AUTO
AUTO
LEVEL
TRAVEL
BRAKE
MODE
WARNING!
EXCESS
SLOPE
NOT IN
PARK/
R
MANUAL
RETRACT
EXTEND
CORPORATION
W
HH
R
Pilot Air Dump
One SpaceMaker "Platform Level-Out (UPLO)" Slide-Out System
R
DUMP
MANUAL
AP54063
HWH 725 Series, Computer-Controlled
Hydraulic Leveling System

WARNING !
READ THE ENTIRE OPERATOR 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.
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.
OPERATOR’S MANUAL
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE DUMPING AIR FROM THE VEHICLE’S SUSPENSION.
DO NOT MOVE THE VEHICLE IF THE VEHICLE IS NOT AT THE PROPER RIDE HEIGHT. CONTACT MANUFACTURER
IMPORTANT: IF COACH IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE
OPERATING LEVELING SYSTEM.
08APR10
MP14.0014
TECHNICAL SERVICE FOR MOVING THE VEHICLE WHEN NOT AT THE PROPER RIDE HEIGHT.
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE OPERATING LEVELING SYSTEM OR ROOM EXTENSIONS.
HWH maintains technical and information services at 800-321-3494 or
563-724-3396. Assistance is available Monday thru Friday from 8:00A.M until 5:00P.M. C.S.T.
Technical and information service is also available on-line at www.hwh.com.

MP24.3151
07JUN10
"CANCEL" BUTTON:
any leveling system operation.
"AUTO LEVEL" BUTTON:
"AUTO STORE" BUTTON:
four jacks at the same time. WARNING LIGHTS:
"EXCESS SLOPE" LIGHT:
the leveling system cannot level the vehicle.
"NOT IN PARK/BRAKE" LIGHT:
when the hand/auto brake is not set and the "AUTO LEVEL"
"TRAVEL MODE" LIGHT:
when the ignition is on, when the jacks are retracted and
there are no red WARNING lights on.
MASTER "JACKS DOWN" WARNING LIGHT:
light mounted in the dash separate from the touch panel.
and the ignition is "ON".
BUZZER:
CONTROL FUNCTIONS
INDICATOR LIGHTS (CONTINUED)
CONTROL BUTTONS
Push this button to stop
Push this button to retract all
This indicator will light when
This indicator will light
This indicator light will be on
This is a
This is a jacks down warning.
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.Push this button any time to
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"
extended 1/4 to 1/2 inch.
start the automatic leveling function.
It will sound if the master "JACKS DOWN"
CONTROL IDENTIFICATION
725 SERIES LEVELING SYSTEM
COMPUTER-CONTROL
or "ACC" position, the system is on, and the jacks are
It will be on when any one or more jacks are extended
button is being pushed.
RETRACT
EXTEND
HWH COMPUTERIZED LEVELING
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
"EXCESS SLOPE"
Indicator light
"AUTO LEVEL"
AUTO LEVEL/STORE
CANCEL Button
"NOT IN PARK"
Indicator light
Indicator light
"TRAVEL MODE"
Indicator light
Indicator light
AUTO LEVEL
"AUTO STORE"
Button
STORE
Button
RAISE LEFT SIDE
Manual button
LOWER LEFT SIDE
Manual button
STORE
AUTO
CANCEL
AUTO
LEVEL
TRAVEL
BRAKE
MODE
WARNING!
EXCESS
SLOPE
NOT IN
PARK/
R
LOWER FRONT
Manual button
RAISE FRONT
Manual button
JACK DOWN
Indicator light
RAISE RIGHT SIDE
Manual button
LOWER RIGHT SIDE
Manual button
LEVEL SENSING
Indicator light
(4) yellow
RAISE REAR
Manual button
LOWER REAR
Manual button
MANUAL
RETRACT
EXTEND (4) red
INDICATOR LIGHTS
AUTO LEVEL INDICATOR LIGHT: This light will flash
during the automatic leveling function.
STORE INDICATOR LIGHT: This light will flash during
the automatic store function.
When all four yellow LEVEL lights are out, the vehicle is
level.
MANUAL
DUMP
"MANUAL DUMP"
Button
warning light is on.
"MANUAL DUMP" BUTTON: This is a manual button for
dumping air from the vehicle suspension.

MP25.9995
14MAR12
CONTROL IDENTIFICATION
PUMP RUN TIME
SYSTEM VARIATIONS FOR PUMP RUN TIME
Contact HWH corporation to get specific information about the system in this vehicle.
No matter what HWH system is on the vehicle, the pump should not be ran for more than four minutes
(3" motors) or six minutes (3.7" or 4.5" motors) without allowing the pump motor to cool for thirty minutes.
Continuous operation of the pump motor without allowing the motor to cool can damage the pump motor.
Some HWH systems are equipped with a lighted reset switch.
If the processor turns the pump off because the run time has
been exceeded, the light in the reset switch will turn on. The
With some systems, when the processor has turned the pump off because the run time has been exceeded, power
to the HWH system must be turned off and back on before the system will operate. With motorized vehicles, turn the
ignition off and back on. With non-motorized vehicles, turn the master power switch for the HWH system off and back
DO NOT continue without allowing the pump motor to cool for thirty minutes.
When operating some leveling systems manually or operating the room extensions, the pump will turn off and back
on while pushing the control button when the pump run time has been exceeded.
the pump motor to cool for thirty minutes.
Some systems can be turned back on immediately after the processor turns the pump off.
back on or run the pump without allowing the pump motor to cool for thirty minutes.
Some systems with rooms run the rooms separate from the system processor. These systems do not monitor pump
run time when operating the rooms.
pump motor to cool for thirty minutes.
The HWH systems with a computer processor monitor the pump run time and will turn the pump off if the run time exceeds a
specified time. This time can vary with different systems. Due to available electronics or system design, the pump run time
programs will also vary. Leveling systems and room extensions that are not controlled by a system processor have no pump
run time protection.
thirty minutes.
Pump motors used with HWH leveling systems and room extension systems come in 3 different diameters; 3", 3.7" and 4.5".
Contact the vehicle manufacturer or HWH for help with identifying the motor size.
runs for more than four minutes with a 3" motor; or six minutes with a 3.7" or 4.5" motor that the motor is allowed
to cool for thirty minutes before continuing. Continuous operation of the pump motor without allowing the motor
PUMP RUN TIME
It is important that any time the pump
to cool can damage the motor.
DO NOT run the pump more than four or six minutes without allowing the pump motor to cool for
DO NOT run the pump more than four or six minutes without allowing the
DO NOT turn the system
DO NOT continue without allowing
on.
system will not operate until the reset switch is pushed.
DO NOT continue without allowing the pump motor to
cool for thirty minutes. LIGHTED RESET SWITCH
For cold weather information see "COLD WEATHER OPERATIONS" below.
COLD WEATHER OPERATIONS
HWH leveling and room extension systems are designed to function in cold weather down to 0 degrees Fahrenheit. Below
freezing (32 degrees Fahrenheit) the jacks or rooms will operate slower than usual.
For operation in temperatures dropping below -20 degrees Fahrenheit, it is necessary that the system is equipped with oil
designed for extreme cold weather application such as a synthetic oil. (Contact HWH for recommendations.)
DO NOT run the pump motor continuously.
Continuous operation of the pump with slow moving jacks or rooms in cold weather, without allowing the pump motor to
cool will cause the pump motor to burn up and damage the pump assembly.
It is important that any time the pump runs for more than four minutes
continuing. Continuous operation of the pump motor without allowing the motor to cool can damage the motor.
with a 3" motor; or six minutes with a 3.7" or 4.5" motor that the motor is allowed to cool for thirty minutes before

OPERATING PROCEDURES
MP34.0232
07AUG13
GENERAL INSTRUCTIONS
PREPARATION FOR TRAVEL
If parking on soft ground or asphalt paving, a wood block or
pad should be placed under each jack.
Any time a hydraulic leveling process is interrupted, it is
recommended to retract the jacks according to the JACK
RETRACTION Section and then restart the leveling process.
If the hand / auto brake is not set when the "AUTO LEVEL"
button is pressed, the "NOT IN PARK/BRAKE" light will
come on. When the "AUTO LEVEL" button is released the
If the jacks are retracted but a red "WARNING" light is lit
the system needs to be serviced.
If the jacks cannot be retracted according to the JACK
RETRACTION Section, retract the jacks according to the
MANUAL JACK RETRACTION Section. The system
should then be checked.
Maintain adequate clearance in all directions for vehicle, room
extensions, awnings, doors, steps, etc. Vehicle may move in
any direction due to jacks extending or retracting, settling of
the jacks or the vehicle, equipment malfunction, etc..
Any room extension or generator slide should be fully
DO NOT MOVE THE VEHICLE IF ONE
OR MORE JACKS ARE EXTENDED TO THE GROUND.
WARNING:
"NOT IN PARK/BRAKE" light will go out. The Automatic
retracted before traveling.
Leveling function will not start.
Press the "CANCEL" button or turn the ignition switch
"OFF" at any time to stop the operation of the system.
fail to retract completely, extend the jacks back down
to the ground then retract the jacks again.
NOTE: If the vehicle is parked or stored with the jacks
extended for an extended period of time and the jacks
IMPORTANT: Before traveling, the red jack warning
lights must be off the "TRAVEL MODE" light must be on
and the vehicle should be at the proper height for travel.
If lights are not correct for travel, retract jack as
THE LEVELING JACKS ARE STILL IN CONTACT WITH
THE GROUND OR IN THE EXTEND POSITION. THIS
VEHICLE IS EQUIPPED WITH STRAIGHT-ACTING JACKS.
MOVING THE VEHICLE WITH THE LEVELING JACKS
EXTENDED CAN CAUSE SEVERE DAMAGE TO THE
WARNING:DO NOT MOVE THE VEHICLE WHILE
TRAVELING. CONTACT MANUFACTURER TECHNICAL
SERVICE BEFORE MOVING A VEHICLE THAT IS NOT
AT PROPER TRAVEL HEIGHT.
VEHICLE IS AT THE PROPER RIDE HEIGHT FOR
INTO THE STORE/TRAVEL POSITION AND THE
JACKS AND OR THE VEHICLE AND CREATE A DRIVING
HAZARD. DO NOT RELY SOLELY UPON WARNING
LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY
TO CHECK THAT ALL JACKS ARE FULLY RETRACTED
described in the JACK RETRACTION Section.

MP34.275
1
27APR1
5
OPERATING PROCEDURES
725 SERIES LEVELING SYSTEM
or level the vehicle as close as possible according to the
Retract the jacks and move the vehicle to a more level posit
ion
SLOPE" light will remain on for two minutes if the ignition
One or more jacks may not be extended. The system will sh
ut
stabilize the vehicle if the "EXCESS SLOPE" light comes on
.
without turning the yellow level light out. The system will no
t
come on. Excess slope is when one or two jacks extend ful
ly
unable to level the coach, the "EXCESS SLOPE" light will
EXCESS SLOPE SITUATION: In the event the jacks are
AUTOMATIC HYDRAULIC LEVELING (HWH TOUCH PANEL CONTROLS)
the vehicle ignition is in the ON or ACC. position
the leveling system touch panel can be on anytime
NOTE: One or two yellow level indicator lights on
the automatic leveling function.
"CANCEL" button on the HWH touch panel will stop
pushing the "AUTO LEVEL", "AUTO STORE" or the
IMPORTANT: During the Automatic Leveling procedures,
and place a pad under each jack if the ground will not
2. At this time, the operator may want to check the jacks
engine off. Turn the ignition to the "ACCESSORY" position.
parking the vehicle and set parking brake. Turn the coach
1. Place transmission in the recommended position for
and the park brake is set.
support the vehicle.
MANUAL HYDRAULIC OPERATION section. The "AUTO
is in the "ON" or "ACC" position.
off, leaving the "EXCESS SLOPE" light on. The "EXCESS
5. Turn the ignition switch to the "OFF" position.
The slight lift experienced during the stabilizing procedure
normally is not sufficient to cause a level issue for the motor
home. However, a feature of the single step leveling system
is the manual leveling buttons will function anytime the
ignition is in the ON or ACC. position and the park brake is
set. If desired, the operator can use the UP ARROWS
(extend jacks) that correspond to any lit yellow level indicato
r
light to "bump" the vehicle up slightly to turn that yellow
indicator light off.
During the automatic
leveling sequence, after the system has extended the
appropriate jacks to level the vehicle and has turned
the yellow level indicator lights off, the system will
then stabilize the vehicle.
The switch will turn on when the jack extends to the ground
and lifts the vehicle slightly. Jacks that have lifted the vehicle
for leveling should have pressure switches that are on.
The sequence starts with the right rear jack. If the pressure
switch is not on, the system will extend the jack as necessary
.
If the switch is on (or when it comes on) the system will check
the left rear jack pressure switch, extending the jack if necessary
If the left rear switch is on (or when it comes on), the system
will recheck the right rear (extending if necessary) then recheck
the left rear (extending if necessary). After checking and
rechecking both rear jacks, the system then checks the fron
t
jacks. The system checks both front jacks at the same time
.
If either pressure switch is not on, the system will turn the
pump on and open the valves for both front jacks. When
both front pressure switches are on, the system turns the
pump and front valves off.
THE "AUTO LEVEL" BUTTON IS PUSHED.
AIR WILL BE EXHAUSTED FROM THE VEHICLE SUSPENSION
AND THE VEHICLE WILL LOWER IMMEDIATELY AFTER
BUTTON THE OPERATOR MUST BE SURE THAT ALL
PERSONS AND OBJECTS ARE CLEAR OF THE VEHICLE.
will begin to dump air from the vehicle suspension. After
approximately 25 seconds, the leveling process will begin.
The AUTO LEVEL light will start to flash. The system
3. Press the "AUTO LEVEL" button one time.
WARNING: PRIOR TO PUSHING THE "AUTO LEVEL"
When a jack extends approximately 1 inch, it’s individual
red warning light on the touch panel will come on. The
touch panel "TRAVEL MODE" light will go out. If the
ignition is in the ON position, the warning buzzer will
sound.
AUTO LEVEL SEQUENCE:
STABILIZE SEQUENCE: The stabilize sequence is part of
the Auto Level sequence. Each jack has a pressure switch. on. The manual UP and DOWN arrow buttons will function
with the "EXCESS SLOPE light on. The "AUTO LEVEL"
button will NOT function if the "EXCESS SLOPE" light is on.
jack until the pressure switch turns on.
is not on, the computer turns the pump and valve on for that
is on, the jack is already stabilizing the vehicle. If the switch
computer checks the jack pressure switches. If the switch
The stabilize procedure is a specific sequence where the
STORE" button will function if the "EXCESS SLOPE" light is

MP34.3061
15FEB11
WARNING:
JACK RETRACTION (HWH TOUCH PANEL CONTROLS)
THE OPERATOR MUST BE SURE THAT
THERE ARE NO OBJECTS UNDER THE VEHICLE AND THAT
ALL PEOPLE ARE CLEAR OF THE VEHICLE.
3. If jacks cannot be retracted by the above procedure see
MANUAL JACK RETRACTION Section.
WARNING: DO NOT MOVE THE VEHICLE WHILE THE
LEVELING JACKS ARE STILL IN CONTACT WITH THE GROUND
OR IN THE EXTEND POSITION. THIS VEHICLE IS EQUIPPED
WITH STRAIGHT-ACTING JACKS. MOVING THE VEHICLE
WITH THE LEVELING JACKS EXTENDED CAN CAUSE
SEVERE DAMAGE TO THE JACKS AND OR THE VEHICLE AND
CREATE A DRIVING HAZARD. DO NOT RELY SOLELY UPON
WARNING LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY TO
CHECK THAT ALL JACKS ARE FULLY RETRACTED INTO
2. The vehicle can be moved as soon as the red warning
lights are out, the jacks are in the STORE/TRAVEL position
and the green "TRAVEL" light is on, if the vehicle is at the
THE STORE/TRAVEL POSITION AND THE VEHICLE IS AT
OPERATING PROCEDURES
725 SERIES LEVELING SYSTEM
NOTE: When traveling thermal expansion may cause
a jack to extend slightly. When the "AUTO STORE"
button has been used to retract the jacks, the system
will automatically retract any jack that extends due to
thermal expansion.
IMPORTANT: If a red warning light and buzzer come on
while traveling, the jacks should be checked as soon as
a safe parking location is found.
NOTE: When the jacks are stored with the ignition in
the ON position, the warning buzzer will sound until
the jacks have retracted to the STORE position. If
desired, the jacks can be stored with the ignition key
in the accessory position. This will eliminate the
warning buzzer while the jacks are retracting.
1. Start the engine and press the "AUTO STORE" button.
The store indicator light will flash. The vehicle should start
to return to proper ride height. The front jacks will retract for
5 seconds before the rear jacks will begin to retract. As each
jack retracts, its red WARNING light will go out. The system
will automatically shut down 1 minute after the four individual
red "WARNING" lights are out. If any one red "WARNING
light does not go out, the system will continue to store for fifty
minutes, then shut down regardless of the "WARNING" lights
the automatic store function.
"CANCEL" button on the HWH touch panel will stop
pushing the "AUTO LEVEL", "AUTO STORE" or the
IMPORTANT: During the Automatic Store procedures,
IMPORTANT: If power to the system is interrupted
after starting a store procedure with either the
touch panel or the remote rocker switch, the store
procedure should be reinitiated and the jacks
should be completely retracted with all four red
WARNING lights out prior to traveling.
condition.
THE PROPER RIDE HEIGHT.
proper ride height for traveling.
It is recommended to retract any room extensions
before retracting the jacks.

OPERATING PROCEDURES
MP34.3333
07AUG13
IMPORTANT: Do not continue to push an EXTEND
MANUAL JACK RETRACTION
MANUAL HYDRAULIC OPERATION
1. Place transmission in the recommended position for parking
2. Place pads under the jack feet if the ground will not support
the vehicle on the jacks.
4. The vehicle may be leveled using the manual EXTEND
(UP ARROW) buttons on the right half of the panel. If a yellow
LEVEL SENSING light is on, that side, end or corner of the
Jacks will extend (or retract) in pairs to raise (or lower) a side
or end of the vehicle.
button for more than ten (10) seconds after that pair of
5. When leveling is completed, turn the ignition
switch to the "OFF" position.
the vehicle, and set the parking brake. Turn the ignition to the
"ACCESSORY" position.
jacks are fully extended.
large and / or small valves.
NOTE: Assemblies can have different combinations of
release for retracting only if the "AUTO STORE" button on the
equipped with a manual valve release. Use the manual valve
The solenoid valves on the power unit valve assembly are
DO NOT CRAWL UNDER THE VEHICLE, KEEP A SAFE
DISTANCE IN FRONT AND REAR OF THE VEHICLE.
THE VEHICLE MAY DROP AND/OR MOVE FORWARD
OR BACKWARD WITHOUT WARNING AS THE VALVE
RELEASE IS OPERATED.
1. Locate the manual valve release on each solenoid valve.
The solenoid valves are located on the power unit/valve
2. Allow clearance for the vehicle to lower.
assembly.
WARNING: KEEP AWAY FROM THE WHEELS,
5. Check that all four jacks are now retracted.
6. Close the valves by moving the valve release cam to
7. The system should now be repaired before using again.
3. Retract the front jacks by slowly opening
the two center valves.
4. Repeat the process for the rear jacks by opening the two
the closed position.
outer valves.
vehicle is low. It is best to level the vehicle side to side first,
if needed, before front to rear.
Any jack not used for leveling can be extended to the
ground. This provides additional stability against wind and
activity in the vehicle. Jacks used to stabilize the vehicle
after leveling is complete should lift the vehicle slightly after
touching the ground.
BREATHER
RELEASE CAM
WITH VALVE
SMALL STYLE
MANIFOLD
CAP
from the vehicle suspension.
3. Push the "DUMP" button. Wait until all air is exhausted
CLOSED
VALVE
OPEN
VALVE RELEASE CAM
LARGE STYLE WITH
CLOSE VALVE
OPENED
VALVE RELEASE CAM OPERATION
control panel will not retract the jacks for travel.
Large and small valves will be equipped with a valve
release cam. The cam might be rotated in any direction
on the valve. Pushing the release cam in the wrong
direction may damage the valve.

OPERATING PROCEDURES
ROOM EXTEND PROCEDURE
2. Unlock all room-locking devices.
to the room or has been used, remove it before
WARNING:
extend the room.
3. To extend the room, press and hold the ROOM CONTRO
L
in the "EXTEND" position until the room is fully extended an
d
KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM WHEN OPERATING.
NOTE: If a MANUAL RETRACT DEVICE is attached
NOTE: Make sure there is adequate clearance to fully
NOTE:
1. The ignition must be in the OFF position to operate
The park brake must be set before a room can be
extended or retracted.
MP34.4343A
24JUL1
4
DISENGAGED BEFORE OPERATING THE ROOM.
RETRACTING DEVICES ARE DETACHED OR
ALL ROOM LOCKING, CLAMPING OR MANUAL
OPERATOR’S RESPONSIBILITY TO ENSURE THAT
PERSONAL INJURY AND VEHICLE DAMAGE. IT IS THE
DEVICES ATTACHED OR ENGAGED CAN CAUSE
ROOM LOCKING, CLAMPING OR MANUAL RETRACTING
WARNING: OPERATING A ROOM WITH ANY
Refer to vehicle manufacturer for proper sequence of
room extension and leveling system operation.
the room.
IMPORTANT: Room controls are provided by the vehicle
manufacturer. Refer to the vehicle manufacturer for
information concerning the room controls. The following
information is basic room operating information. Read
this information carefully before operating the rooms.
extending the room.
has lowered to the room down position.
The pump will automatically turn off approximately 3 second
s
after the room the room has lowered to the down position.
the room. If the direction of the room has been reversed
,
DO NOT re-extend the room until the room has been
fully retracted.
NOTE: Releasing the ROOM CONTROL will
halt the operation of the room. During normal operation
of the room, do not reverse direction of the room until
the room is fully extended. If necessary, the direction
of the room may be reversed, but watch for binding of
down position when room operation is restarted.
If room operation has been halted before the room is fully
extended and down, the room may not lower to the fully
If this occurs, retract the room completely and retry.
NOTE: Under normal operation, it is recommended to
NOT release the room control switch until the room is
fully extended and down.
when the vehicle is supported by the leveling system.
IMPORTANT: Do not use a room extension support
the room, contact HWH Customer Service for
DO NOT reverse direction of
stops moving, release the room control immediately.
"EXTEND" position for more than ten seconds after the
roo
Do not hold the ROOM CONTROL in the
DO NOT force the room.
assistance 1-800-321-3494.
is fully extended or stops moving. If either side of the ro
om
IMPORTANT:

OPERATING PROCEDURES
ROOM RETRACT PROCEDURE
2. To retract the room press and hold the ROOM CONTROL
in the "RETRACT" position until the room is fully retracted.
halt the operation of the room.
3. Engage all room-locking devices.
IMPORTANT: Room-locking devices should be locked
while traveling.
WARNING:
CLEAR OF ROOM WHEN OPERATING.
KEEP PEOPLE AND OBSTRUCTIONS
4. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
NOTE:
NOTE:NOTE: Releasing the ROOM CONTROL will
The park brake must be set before a room can be
extended or retracted. HWH Customer Service for assistance 1-800-321-3494.
DO NOT reverse direction of the room, contact
room control immediately. DO NOT force the room.
If either side of the room stops moving, release the
room is fully retracted or stops moving.
"RETRACT" position for more than ten seconds after the
Do not hold the ROOM CONTROL in theIMPORTANT:
MP34.4543A
24JUL1
4
Refer to vehicle manufacturer for proper sequence of room
extension and leveling system operation.
the room.
1. The ignition must be in the OFF position to operate
this information carefully before operating the rooms.
information is basic room operating information. Read
information concerning the room controls. The following
manufacturer. Refer to the vehicle manufacturer for
IMPORTANT: Room controls are provided by the vehicle
retracted. If necessary, the direction of the room may
retract the room until the room has been fully extended.
the direction of the room has been reversed, DO NOT
be reversed, but watch for binding of the room. If
reverse direction of the room until the room is fully
During normal operation of the room, do not
NOTE:
The pump will shut off approximately 3 seconds after the
room is fully retracted.

"UNIVERSAL PLATFORM LEVEL-OUT" ROOM EXTENSION MECHANISM
MANUAL ROOM LIFT PROCEDURES
ML52670/MP34.9559B
13MAY1
5
OPERATING PROCEDURES
"VALVE OPENED" position as shown.
retract solenoid valves by moving the cams to the
Manually open the valve release cams for the extend and
1. Determine which synchronizing cylinder controls the room.
the room, contact HWH Customer Service for assistance
understood or if the room begins to bind DO NOT force
IMPORTANT: If at any stage something is not
1-800-321-3494.
NOTE: Manual room lift procedures must be done before
manual room retraction procedures.
3. Leave the valves opened and refer to the next page
for room retract procedures.
If the pump manifold is equipped with an auxiliary hand pump
,
you may be able to retract the room by opening only the room
retract valve (as labeled by the wiring harness) and operating
the hand pump, refer to the AUXILIARY HAND PUMP
OPERATION page for instructions on the use of the hand
pump and valves equipped with a release cam. If the room
cannot be retracted with the hand pump, it will be necessar
y
to use the lift bolts and room retract screws.
INCORRECT MOVEMENT OF THE CAMS CAN DAMAGE
THE RELEASE CAMS IN THE CORRECT DIRECTION.
ANY DIRECTION ON THE VALVE. MAKE SURE TO MOVE
IMPORTANT: RELEASE CAM MIGHT BE ROTATED TO
THE VALVES.
NOTE: There may be more than one platform lift cylind
er
assembly There is a manual lift bolt for each assembly
.
All lift bolts must be used to lift the room.
2. Use a 13/16 wrench or socket to rotate the lift bolt(s) clockwise
until they are seated in the receiver block.
IMPACT WRENCH TO TURN LIFT BOLTS.
bolt(s) until the room is completely lifted. When there are
multiple lift bolts, alternate evenly between all lift bolts,
turning each bolt two or three complete turns each time.
Turning one lift bolt without alternating may cause
DO NOT USE AN
Continue to turn the
the room to bind.
ROOM EXTENDED
AND DOWN AND DOWN
ROOM EXTENDED
ROOM EXTENDED
AND UP
IN STORED
LIFT BOLT SHOWN ENGAGED WITH LIFT BOLT SHOWN
RECEIVER BLOCKPOSITION
FULLY LIFTED
WITH ROOM
LIFT BOLT SHOWN
RECEIVER
BLOCK
LIFT BOLT
BLOCK
LIFT BOLT
RECEIVER
DO NOT RETRACT LIFT BOLT UNTIL YOU HAVE READ
"EXTENDING ROOM AFTER SERVICE" ON NEXT PAGE
.
ROOM CONTROL MANIFOLD
TO
CLOSE
LOCATED ON SYNCHRONIZING CYLINDER
VALVE
CLOSED
OPENED
VALVE
OPEN
TO
CYLINDER
RETRACT
EXTEND
CYLINDER
RELEASE CAMS

"UNIVERSAL PLATFORM LEVEL-OUT" ROOM EXTENSION MECHANISM
MANUAL ROOM RETRACT PROCEDURES
ML52670\MP34.9561B
23SEP13
OPERATING PROCEDURES
PLATE
RECEIVER
ROOM EXTENDED
ROOM RETRACTED
PLATE
THREADED
manufacturer.
Using wrench provided,
a personal wrench or a tire iron with a 1-1/8" opening rotate
either mechanism’s threaded rod clockwise 6 complete turns.
the front and one for the rear mechanism should be provided.
1. Start both threaded rods until resistance is met, one for
NOTE: To access the threaded plates refer to vehicle
3. Move to the other room extension mechanism, rotate
the room, contact HWH Customer Service for assistance
understood or if the room begins to bind DO NOT force
IMPORTANT: If at any stage something is not
3 and 4 alternating from mechanism to mechanism rotating
each threaded rod 12 complete turns until room is sealed.
(DO NOT exceed 15 ft.lbs) Make sure the room does not bind.
4. Return to the first room extension mechanism and rotate
the threaded rod clockwise 12 complete turns. Repeat steps
the threaded rod clockwise 12 complete turns.
1-800-321-3494.
Do Not use an impact wrench.
THREADED ROD
PLATE
THREADED
THREADED ROD
NOTE: Manual room lift procedures must be done before
manual room retraction procedures.
2.
NOTE: Leave the solenoid valves open, the lift bolts
and threaded rods in place until the room has been
serviced.
EXTERIOR
WALL
COACH
END VIEW OF
ROOM EXTENDED
END VIEW OF
ROOM RETRACTED
WALL
COACH
EXTERIOR
EXTENDING ROOM AFTER SERVICE
1. Room lift bolts should not be retracted yet. Push and
hold the room switch to "RETRACT" for 5 to 10 seconds.
2. Push the room switch to "EXTEND" until the room is within
1 inch of being fully extended. Threaded rods should be
Do not allow room to bind.
3. Retract all lift bolts completely. If room starts to drop,
alternate between lift bolts evenly while turning lift bolts.
4. After lift bolts are retracted, push room switch to
"EXTEND" until room is fully extended and down. If
room dropped while retracting lift bolts, push room
switch to "EXTEND" for 5 to 10 seconds.
5. Retract room with room switch.
the room, contact HWH Customer Service for assistance
1-800-321-3494.
understood or if the room begins to bind DO NOT force
IMPORTANT: If at any stage something is not
IMPORTANT: DO NOT EXTEND THE ROOM UNTIL THE
ROOM HAS BEEN SERVICED. ANY SOLENOID VALVES
LEFT OPEN SHOULD BE CLOSED. THE THREADED
RODS SHOULD BE COMPLETELY REMOVED BEFORE
ROOM IS FULLY EXTENDED. If there is not enough
room to remove both threaded rods completely, alternate
backing the threaded rods out and slightly extending the
room. Be careful to not extend the room so far that the
threaded rods impact the coach wall or the mechanism.
completely removed at this time.

MAINTENANCE
MP44.0018
10APR12
OIL LEVEL
The oil level should be checked when the vehicle is first
purchased and then once every two years. More often if
there is an oil leak in the system.
NOTE: Overfilling the tank can cause leakage of oil
through the breather cap.
ELECTRICAL SYSTEM
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
All electrical connections, especially ground connections,
should be clean, tight, free from corrosion and protected
JACKS
There are very few user serviceable parts on the jacks
The jacks require very little maintenance. If the jacks are
VISUAL INSPECTION
Periodically inspect the system for oil leaks and
damaged or missing parts, such as pivot bolts or springs.
Check the hydraulic lines and wiring for damage and wear.
Check that the jacks do not interfere with any parts of the
vehicle when they are in the "STORE" position.
The system will operate better if kept clean and free
from caked on mud or ice.
OPERATIONAL CHECK
Check that all lights work according to the "INDICATOR
LIGHT" Section. Correct function of the red "WARNING"
Review the OPERATOR MANUAL. Run the system
according to the SYSTEM OPERATION Section.
Note any abnormal operation.
Review the "JACK RETRACTION" Section. Make sure the
jacks will fully retract to the "STORE" position. Jacks should
not interfere with any of the coach when in the "STORE"
All maintenance should be done as part of the normal
servicing of the coach.
clean. from weathering.
light is important.
position.
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:
extremely dirty with caked on mud they should be washed.
If extremely dirty, the jack rods should NOT be wiped. The
jack rods do not need to be oiled or sprayed with anything.
ROOM EXTENSIONS
The HWH room mechanisms need no maintenance.
DO NOT grease or lubricate any parts of the HWH
mechanism.
Any visible mechanism can be kept clean by washing
with water. Refer to the vehicle manufacturer for
correct maintenance of the room seals.
All jacks and any HWH room extensions or steps should be
completely retracted before checking the oil level. The oil
reservoir is part of the pump / manifold assembly. The oil
level is checked and filled through the breather cap. Clear
any dirt away from the breather / filler cap before removing.
The oil level should be within one inch of the top of the
reservoir. Most breather caps have a dipstick.
See ML47149 for proper maintenance of all jacks.

MAINTENANCE
NOT IN PARK/BRAKE CHECK
Apply the brake so the coach cannot roll. Turn the ignition
to the "ACC" or "ON" position. Release the parking brake.
THE COACH WHEELS SECURELY SO THE COACH
CANNOT ROLL FORWARD OR BACKWARD.
WARNING: WHEN MAKING THIS CHECK, BLOCK If any of the above checks or inspections 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
22NOV1
6
MP44.050
2
Push the "AUTO LEVEL" button. The "NOT IN PARK/
BRAKE" indicator light should come on while the "AUTO
LEVEL" button is pushed. Release the "AUTO LEVEL"
for service or repair.
button and set the park brake. The leveling system
should now function.
WINTER WEATHER DRIVING
have dried. This can facilitate corrosion of metallic
continue to absorb moisture from the air even after they
Anti-icing / deicing agents when splashed on your vehicle,
components, such as HWH jacks.
To help reduce the corrosion of jacks after exposure to anti
-
icing / deicing agents, thoroughly wash jacks with warm
soapy water.

SENSING UNIT MAINTENANCE/SERVICE
SENSING UNIT ADJUSTMENT / WITH ADJUSTING ENHANCEMENT
NOTE: If opposing LED’s are lit, there is a problem with
the Sensing Unit.
If LED (A) is lit: Tighten adjustment screw number 1
until the LED is off.
If LED (C) is lit: Loosen adjustment screw number 1
until the LED is off.
If LED (B) is lit: Loosen adjustment screw number 3
until the LED is off.
until the LED is off.
If LED (D) is lit: Tighten adjustment screw number 3
09NOV10
MP44.1511
With the vehicle level according to the bubble level, if there
are no yellow lights lit on the Touch Panel, the sensing unit is
properly adjusted. If there are yellow LEVEL lights lit on the
Touch Panel, manual adjustments to the Sensing Unit are
needed.
SENSING UNIT ACCURACY TOLERANCE
The sensing unit has an accuracy tolerance of ± 5.4 inches front to rear and
INSTRUCTION SHEET
± 1 inch side to side on a 36 foot vehicle. Typical leveling results will be better.
IMPORTANT: THE SENSING UNIT MOUNTING SPRINGS
SHOULD BE COMPRESSED ABOUT 1/2 THEIR FREE
LENGTH. SCREW NUMBER 2 SHOULD NOT BE TURNED
MOUNTED BELOW
FRONT
MOUNTING SURFACE
(3) MOUNTING
(3) MOUNTING
SCREWS
SPRINGS
THIS
SIDE
UP
LED A - FRONT OF VEHICLE
LED B - LEFT SIDE OF VEHICLE
LED C - REAR OF VEHICLE
LED D - RIGHT SIDE OF VEHICLE
REMOTE MOUNTED "POTTED" ELECTRONIC SENSING UNIT
WHILE ADJUSTING THE SENSING UNIT. AFTER
ADJUSTING THE SENSING UNIT, BUMP THE SENSING
UNIT TO SEE THAT IT IS SETTLED TIGHT AGAINST ALL
THREE SCREW HEADS AND STILL INDICATES THAT
THE UNIT IS LEVEL.
Level the vehicle by placing a bubble level in the center of the
freezer floor or upon whichever surface within the vehicle that
is to be level. It is best if the level is placed close to the
mounting area of the sensing unit. Using the Leveling System
and the bubble level, ignoring the yellow LEVEL lights on the
Touch Panel, level the vehicle until the bubble is centered.
The ignition (motorized units) or master power switch (towable
units) must be on. Remove the "Adjusting Enhancement Cap".
DO NOT LOSE THIS CAP. There is a small pin beneath the
cap. Use a jumper wire with an alligator clip to apply a ground
to the pin. This will make the sensing unit very sensitive. The
yellow lights may "jump" around while adjusting the sensing unit.
Let the lights settle down after each adjustment. Small, gentle
turns will work best. Turn mounting screws 1 and 3 to adjust
the sensing unit. Turn screws as instructed to turn out all the
yellow LEDs. When all the LEDs are out, remove the jumper
wire and replace the adjusting enhancement cap. DO NOT
over tighten.
SENSING UNIT
BOTTOM VIEW OF
LED
3
D
C
LED
LED
ABYELLOW LEDs
2
MOUNTING/ADJUSTMENT
SCREWS (3)
1
LED
Move the vehicle to an unlevel position and level the
vehicle according to the yellow level sensing lights on
the touch panel. Readjust if necessary.
ADJUSTING
ENHANCEMENT
CAP

MP84.9999
28FEB11
VALVE RELEASE
NUT
NOTE: When opening the
valve DO NOT turn the valve
release nut more than 4 and
1/2 turns counter clockwise.
OIL LEVEL
1/4" NUT DRIVER
THE BREATHER CAP IS
LOCATED ON THE TOP
TOP OF THE RESERVOIR. BEFORE RETURNING THE
BREATHER CAP TO THE RESERVOIR, REMOVE ANY
VALVE RELEASE
NUT
counter clockwise. Damage to
nut more than 2 full turns
NOTE: When opening the valve
DO NOT turn the valve release
REMOVE TO GAIN
ACCESS TO THE 1/4"
VALVE RELEASE NUT
2 1/4" DIAMETER SOLENOID VALVE
1 1/2" DIAMETER SOLENOID VALVE
GROOVES
SIDE OF THE POWER
UNIT RESERVOIR
NOTE: The cam release may be
rotated in any direction on the
valve. DO NOT assume that
pushing down will open the
1 1/2" DIAMETER SOLENOID VALVE
valve. Pushing the cam in the
2 1/4" DIAMETER SOLENOID VALVE
the valve may result.
Damage to the valve may FILL BETWEEN
SOLENOID VALVES WITH CAM RELEASE
wrong direction could damage
the valve.
NOTE: The cam release may be
rotated in any direction on the
valve. DO NOT assume that
pushing down will open the
valve. Pushing the cam in the
wrong direction could damage
the valve.
result.
a large style 12 volt valve with a large style
valve with a small style 12 volt valve. Replace
considered when replacing any HWH hydraulic
solenoid valve. Replace a small style 12 volt
Valve size and voltage are still factors to be
replacements for all previous styles of
The cam release style valves are direct
HWH hydraulic solenoid valves.
12 volt valve. This is true for 24 volt valves
also.
turn out the old valve, confirm that no o-ring
stress on the wires at the point where they
the wires to the valve body to keep the wires
exit the valve body. Use a wire tie to secure
After installing the valve and without creating
Valve installation has not changed, simply
debris has been left in the manifold block
and turn in the new valve.
from being pinched beneath the cam
mechanism during operation.
WIRE TIE
WIRE TIE
HYDRAULIC SOLENOID VALVE
INFORMATION INSERT
INDENTIFICATION - MANUAL OPERATIONS - REPLACEMENT
Manual retract
VALVE OPEN
CAM RELEASE
CAM RELEASE
Default position
VALVE CLOSED
CAM RELEASE
Default position
VALVE CLOSED
position
CAM RELEASE
VALVE OPEN
position
Manual retract
REPLACEMENT VALVES MAY HAVE A VALVE RELEASE NUT OR RELEASE CAM
SOLENOID VALVES WITH 1/4" NUT RELEASE
1/4" NUT DRIVER, CLEAN ANY DEBRIS FROM THE
CAP, EITHER TO CHECK THE OIL LEVEL OR TO USE
IMPORTANT: PRIOR TO REMOVING THE BREATHER
INCLUDING DEBRIS INSIDE THE 1/4" NUT DRIVER.
PLASTIC PLUG:
PAINT CHIPS OR OTHER DEBRIS FROM THE DIPSTICK