HWH SPACEMAKER 325 Series User manual

OPERATOR’S MANUAL
ML29424/MP05.9456
15SEP03
Touch Panel Leveling Control
BI-AXIS Hydraulic Leveling
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
325 SERIES LEVELING SYSTEM
HWH TOUCH PANEL-CONTROLLED
R
Straight-Acting Jacks
AP29423
W
CORPORATION
HH
R
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
HWH HYDRAULIC LEVELING
CAUTION!
OFF
STORE
LEVEL
R
Pilot Operated Suspension Air Dump
Two Room Extensions
SPACEMAKER ROOM EXTENSION SYSTEMS
R

CAUTION !
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.
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.
08FEB06
MP15.9800
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.

CONTROL FUNCTIONS
leveling system.
CONTROL IDENTIFICATION
LEVEL MODE LIGHT
WARNING LIGHTS (4-Red)
CONTROL BUTTONS INDICATOR LIGHTS
FRONT EXTEND BUTTON
FRONT RETRACT BUTTON
RIGHT SIDE RETRACT BUTTON
RIGHT SIDE EXTEND BUTTON
(The panel must be off before pressing the "STORE" button)
extend their respective jack pairs to lift the vehicle.
LEFT SIDE EXTEND
REAR EXTEND BUTTON
REAR RETRACT BUTTON
LEFT SIDE RETRACT
LEVEL MODE LIGHT:"LEVEL" BUTTON:
"OFF" BUTTON:
"STORE" BUTTON:
EXTEND BUTTONS (UP ARROWS):
RETRACT BUTTONS (DOWN ARROWS):
These buttons will
This light indicates the system is in
STORE LIGHT
STORE LIGHT:
the store mode.
WARNING BUZZER:
BUTTON
"LEVEL" BUTTON
"OFF" BUTTON
"STORE" BUTTON
BUTTON
This button places the system in
leveling mode.
This button turns off control power to the
This button will retract all four jacks.
will retract their respective jack pairs to lower the vehicle.
extended approximately 1/2 inch or more and the ignition
This light will be on when the system is in
A buzzer will sound if a jack is
These buttons
switch is in the "ON" position.
HWH HYDRAULIC LEVELING
CAUTION!
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
OFF
STORE
LEVEL
the leveling mode.
more jacks are extended approximately 1/2 inch and the
master "JACKS DOWN" light which will be on when one or
position. Some vehicles are equipped with a dash mounted
1/2 inch, provided the ignition is in the "ACC" or "ON"
ever the corresponding jack is extended approximately
A red WARNING light will be on when-
ignition is in the "ON" position.
WARNING LIGHTS:
LEVEL LIGHTS (4-Yellow)
If a yellow LEVELING light is on, that
two yellow LEVELING lights can be on at a time. The vehicle
the appropriate jack pairs to put out the yellow light. One or
indicates a side, corner, or end of the vehicle is low. Extend
is level when all yellow lights are out.
LEVELING LIGHTS:
MP25.270G
25APR03

CONTROL IDENTIFICATION
MP25.2731
15SEP03
CONTROL FUNCTIONS
The KEY SWITCH controls power to the ROOM
CONTROL SWITCH. When the KEY SWITCH is in the "ON"
POSITION the room can be operated, and the key cannot be
removed. When the KEY SWITCH is in the "OFF" position
the room cannot be operated, and the key can be removed.
The ROOM CONTROL SWITCH
is a two position momentary switch. Pressing the switch in
the EXTEND POSITION will extend the room. Pressing the
switch in the RETRACT POSITION will retract the room. Re-
leasing the ROOM CONTROL SWITCH will halt the operation
of the room.
KEY SWITCH: ROOM CONTROL SWITCH:
ROOM EXTENSION OPERATOR’S PANEL
CAUTION!
CLEAR OF ROOM WHEN OPERATING.
UNDERSTAND OPERATOR’S MANUAL BEFORE
USING. KEEP PEOPLE AND OBSTRUCTIONS
OFF
ON
RETRACT
EXTEND ROOM CONTROL
SWITCH
KEY SWITCH UNIT MUST HAVE JACKS DOWN
AND BE LEVEL BEFORE
OPERATING ROOM
HYDRAULIC ROOM EXTENSION

OPERATING PROCEDURES
LEVELING PROCEDURE
GENERAL INSTRUCTIONS
1. Place gear selector in the parking position, apply park
brake and block tires securely.
3. Push the "ON" button on the touch panel. The POWER
ON light will come ON.
8. Push the "OFF" button on the Touch Panel.
9. Turn the ignition switch off.
2. Turn ignition switch to "ACCESSORY".
5. Place a pad under each jack, if needed, at this time.
NOTE: If the ground is too uneven, the jacks may
not have enough stroke to level the vehicle.
The vehicle may have to be moved.
6. A lit yellow LEVEL light indicates that end, side or corner is
low. Push an EXTEND (up arrow) button to extend jack pairs
according to a lit yellow light.
7. After the vehicle is level, the jacks not used for leveling
may be extended until they touch the ground. The remaining
jacks used to stabilize the vehicle should lift the vehicle
slightly after touching the ground. This provides additional
stability against wind and activity in the vehicle. Do this by
pushing the front and/or rear EXTEND buttons as needed to
extend any remaining jacks. Do not use the right or left
EXTEND buttons.
ALWAYS LEVEL THE VEHICLE FROM SIDE TO SIDE,
IF NECESSARY, BEFORE LEVELING THE VEHICLE
One or two yellow LEVEL lights can be
on at one time. Extend jack pairs accordingly until all yellow
only while the "ON" button is being pushed.
turn on. The "NOT IN PARK/BRAKE" light will be on
NOTE: If the park brake is not set the panel will not
19NOV07
MP35.1520
GENERAL INSTRUCTIONS
before extending or retracting any room.
Read all room extension operating procedures before
or asphalt paving, a wood block or pad should be placed
equipment malfunction, etc. If parking on soft ground
jacks extending or retracting, settling of jacks or vehicle,
steps, etc. Vehicle may move in any direction due to
directions for vehicle, room extensions, awnings, doors,
Maintain adequate clearance in all
under each jack.
Site selection -
when the vehicle is supported by the leveling system.
IMPORTANT: Do not use a room extension support
generator slide is completely retracted before moving
are completely retracted and any room extension or
It is the operator’s responsibility to check that the jacks
the vehicle. The vehicle must be at the proper ride
FRONT TO REAR.
lights are out.
time to stop the operation of the system.
Press the "OFF" button or turn the ignition OFF at any height before traveling.
4. Push the "DUMP" button. The air will dump from the
vehicle suspension. Continue with leveling when air has
stopped exhausting from the suspension.

OPERATING PROCEDURES
RETRACT PROCEDURE
STORE/TRAVEL POSITION
JACK POSITIONS
EXTENDED POSITION
CAUTION:THE OPERATOR MUST BE SURE THAT
THERE ARE NO OBJECTS UNDER THE VEHICLE AND
THAT ALL PEOPLE ARE CLEAR OF THE VEHICLE.
CAUTION:DO NOT MOVE THE VEHICLE
WHILE THE JACKS ARE STILL IN CONTACT WITH THE
GROUND OR IN THE EXTENDED POSITION. THIS
VEHICLE IS EQUIPPED WITH STRAIGHT-ACTING
JACKS. MOVING THE VEHICLE WITH THE JACKS
EXTENDED CAN CAUSE SEVERE DAMAGE TO THE
JACKS AND/OR THE VEHICLE AND CREATE A DRIVING
HAZARD. DO NOT RELY SOLELY UPON THE WARNING
LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY TO
CHECK THAT ALL JACKS ARE RETRACTED INTO THE
STORE/TRAVEL POSITION.
NOTE: If the Leveling Mode light is on, the "STORE"
button will not function.
5. The system will stay in the STORE mode until the "OFF"
button is pushed or the ignition key is turned.
reasonable time, 5 minutes or less, push the "OFF"
come on while traveling and will not go out in a
IMPORTANT: If a red Warning Light and the buzzer
NOTE: If jacks cannot be retracted by the above
procedure see MANUAL JACK RETRACTION Section.
See TRAVEL PROCEDURES before moving the
vehicle and traveling.
NORMAL RETRACT PROCEDURE
1. Start engine. Immediately store the jacks.
2. Press OFF.
3. Press STORE. The "STORE" light will come on. As each
jack retracts it’s red warning light will go out. The vehicle
NOTE: When traveling, with rising temperatures a jack
may extend slightly. If the unit is left in STORE mode
the system will automatically retract the jack.
THIS VEHICLE IS EQUIPPED WITHCAUTION:
AN AIR SUSPENSION. THE SUSPENSION MUST BE AT
THE PROPER RIDE HEIGHT BEFORE TRAVELING, IT IS
THE OPERATOR’S RESPONSIBILITY TO CHECK THAT
THE SUSPENSION IS AT THE PROPER RIDE HEIGHT
FOR TRAVELING.
MP35.1735
29APR09
NOTE: It is recommended that all room extensions
are retracted before storing the jacks.
suspension should return to the proper ride height for traveling.
button to turn the system off. Have the system serviced.
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. If the
jacks are stored with the ignition in the accessory
position, it is important to push the "STORE" button
after starting the engine.
IMPORTANT: Pushing the "OFF" button or moving the
ignition key will interrupt the STORE mode. The jacks
will stop retracting. The STORE mode should be
completed before traveling.
to the ground then retract the jacks again.
extended for an extended period of time and the jacks
NOTE: If the vehicle is parked or stored with the jacks
fail to retract completely, extend the jacks back down

OPERATING PROCEDURES
TRAVEL PROCEDURES
STORE/TRAVEL POSITION
JACK POSITIONS
EXTENDED POSITION
CAUTION: DO NOT MOVE THE VEHICLE WHILE THE
JACKS ARE STILL IN CONTACT WITH THE GROUND OR IN
THE EXTENDED POSITION. THIS VEHICLE IS EQUIPPED
WITH STRAIGHT-ACTING JACKS. MOVING THE VEHICLE
WITH THE JACKS EXTENDED CAN CAUSE SEVERE DAMAGE
TO THE JACKS AND/OR THE VEHICLE AND CREATE A
DRIVING HAZARD. DO NOT RELY SOLELY UPON THE
WARNING LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY
TO CHECK THAT ALL JACKS ARE RETRACTED INTO
THE STORE/TRAVEL POSITION AND THE VEHICLE IS
It is important when traveling that the STORE light is on
and the system left in the store mode. This allows a jack
that extends due to thermal expansion to automatically
retract.
Due to thermal expansion of the hydraulic fluid in the Leveling
System, at times the jacks will extend slightly. The system will
automatically retract the jacks, if the STORE light is on when
this happens.
Any time the vehicle engine is stopped during traveling, such
as for refueling, the STORE button should be pushed after
the engine is started again before continuing to travel.
During traveling if the STORE light is not on and the Jacks
Down Warning Buzzer comes on, push the "STORE" button
and leave the system in the STORE mode.
CAUTION:A WARNING LIGHT OR BUZZER COMING
ON BRIEFLY WHILE TRAVELING DOES NOT INDICATE A
DRIVING HAZARD. IF THE "STORE" LIGHT IS ON AND
THE WARNING LIGHT AND BUZZER COME ON, STAYING
ON MORE THAN 30 SECONDS, THE JACKS SHOULD BE
CHECKED.
AT THE PROPER RIDE HEIGHT FOR TRAVELING.
30APR03
MP35.2059
NOTE: If the jacks are stored with the ignition in the
accessory position, the "STORE" button should be
pushed after starting the engine.
CONTACT MANUFACTURER TECHNICAL SERVICE
BEFORE MOVING A VEHICLE THAT IS NOT AT PROPER
TRAVEL HEIGHT.
ignition key will stop the STORE procedure. The jacks
the "STORE" button to retract the jacks, the STORE light
Start the vehicle engine before retracting the jacks. Push
jack to extend slightly.
will stop retracting. Thermal expansion can cause a
IMPORTANT: Pushing the "OFF" button or moving the
will come on.

OPERATING PROCEDURES
MP35.309C
18APR05
ROOM EXTEND PROCEDURE
CAUTION:
1. Unlock all room-locking devices.
the room remove it before extending the room.
CAUTION:
extend the room.
3. To extend the room, press and hold the
ROOM CONTROL SWITCH in the "EXTEND" position
the operation of the room.
ROOM RETRACT PROCEDURE
2. To retract the room press and hold the
ROOM CONTROL SWITCH in the "RETRACT" position
the operation of the room.
4. Engage all room-locking devices.
IMPORTANT: Room-locking devices should be locked
while traveling.
OPERATING THE ROOM WITH ANY
KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM WHEN OPERATING.
CAUTION:
CLEAR OF ROOM WHEN OPERATING.
KEEP PEOPLE AND OBSTRUCTIONS
5. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
NOTE: The park brake must be set before a room can be
NOTE:
NOTE: If the MANUAL RETRACT WINCH is attached to
NOTE: Make sure there is adequate clearance to fully
NOTE: Releasing the ROOM CONTROL SWITCH will halt
NOTE: Releasing the ROOM CONTROL SWITCH will halt
NOTE: The park brake must be set before a room can be
extended or retracted.
extended or retracted.
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 OPERATING THE ROOM.
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.
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:
until the room is fully retracted.
until the room is fully extended.
2. Turn the ROOM OPERATOR’S PANEL Key Switch to "ON". 4. Turn the panel Key Switch to "OFF" and remove the Key
to prevent undesired operation of the room.
1. Turn the ROOM OPERATOR’S PANEL Key Switch to "ON".
3. Turn the panel Key Switch to "OFF" and remove the Key
to prevent undesired operation of the room.
It is recommended to complete the leveling procedure
before operating room extensions.
It is recommended that the rooms are retracted before
retracting the jacks.

OPERATING PROCEDURES
MP35.601G
03SEP09
MANUAL JACK RETRACTION
been opened far enough to allow the jacks to retract.
the T-Handle will turn harder. Make sure the valves have
will turn several turns easily. As the valve starts to open,
Large style with T-Handle valve release:
power unit. The upper most manifold should control
NOTE: Multiple manifolds may be present on the
retract the jacks.
if the STORE feature on the HWH control panel will not
Use the manual valve release for retracting the jacks only
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 your power unit-manifold assembly.
2. Allow clearance for the vehicle to lower.
WARNING: KEEP AWAY FROM THE WHEELS,
point as internal damage may occur to the solenoid.
incorporated into the Breather Cap. Before using read
NOTE: As of APRIL 2002 a 1/4" Nut Driver has been
and understand the last page of this manual.
6. Check that all jacks are now retracted. If yes, continue.
7. Close the valves by turning each valve release clockwise.
DO NOT tighten the manual valve release past this
IMPORTANT: Once the manual valve release is snug,
8. The system should now be repaired before using again.
3. Using the diagram below identify the style
5. Repeat the process by identifying then opening
the two outer valves.
LARGE STYLE
WITH T-HANDLE
VALVE RELEASE
SMALL STYLE
WITH VALVE
RELEASE NUT
LARGE STYLE
RELEASE NUT
WITH VALVE
PLASTIC PLUG
BREATHER
CAP
Small style with Valve Release Nut: DO NOT
1/4" valve release nut more than . Turning
the nut more could damage the valve.
release nut is located under a plastic plug that must be
removed to gain access.
could damage the valve.
Large style with Valve Release Nut:
The T-Handle
The 1/4" Valve
turn the
DO NOT turn the 1/4" valve
release nut more than . Turning the nut more
jack functions. (Valve styles and arrangements will vary)
POWER UNIT-MANIFOLD ASSEMBLY
MANIFOLD
of your two center valves.
If no, notify the dealership where you purchased the vehicle
or had the leveling system installed or contact
(The diagram below represents a typical Power Unit-
MANUAL JACK RETRACTION
extensions are fully retracted prior to performing
IMPORTANT: HWH recommends that all HWH room
manual jack retraction procedures.
Manifold Assembly it may not be an exact match to yours).
4. Retract the front jacks by opening the two center valves.
Slowly turn the manual valve releases counter clockwise
until the jacks start to retract.
1 full turn
4 and 1/2 turns
HWH Corporation customer service.
MP35.384N

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.

MAINTENANCE
MP45.241C
19NOV07
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.
All jacks and any HWH room extension cylinders should be
completely retracted before checking the oil level. The oil
reservoir is part of the pump/manifold assembly. The oil level
Most breather caps have a dipstick.
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.
is checked and filled through the breather cap. Clear any dirt
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:
away from the breather/filler cap before removing. The oil
level should be within one inch of the top of the reservoir.
extremely dirty with caked on mud they should be washed.
The jack rods should NOT be wiped and 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.

NOT IN PARK/BRAKE CHECK
Set the park/brake. Switch the ignition to the "ACC" or "ON"
position. Push the "ON/OFF" switch toward "ON". Release
the parking brake and confirm that the "PARK" indicator light
comes on. Reset the parking brake. The "PARK" indicator
light should go out. Switch the ignition to "OFF".
THE COACH WHEELS SECURELY SO THE COACH
CANNOT ROLL FORWARD OR BACKWARD.
CAUTION: 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 for service or repair.
07MAY09
MP45.3259
SENSING UNIT ADJUSTMENT
adjustments first, then hold the adjustment nut from moving
while making the A-C adjustment.
Control Box. If two LED’s are on, it is best to make the B-D
be a problem with the Sensing Unit or the mounting of the
be turned more than 3/4 turn to turn the LED out, there may
to be turned more than 1/2 flat or the adjustment screw has to
screw will turn out LED’s A and C. If the adjustment nut has
the adjustment nut to turn out LED’s B and D. The adjustment
to the drawing below. The Sensing Unit is adjusted by turning
There are four LED’s on the Sensing Unit, A,B,C and D. Refer
Control Box is mounted to the power unit/valve assembly.
The Sensing Unit is mounted inside the Control Box. The
level the vehicle until the bubble is centered.
level, ignoring the yellow LEVEL lights on the Touch Panel,
that is to be level. Using the Leveling System and the bubble
the freezer floor or upon whichever surface within the vehicle
Level the vehicle by placing a bubble level in the center of
the vehicle, the front is still low. This means the front
"tweaking" process until the system levels the vehicle
touch panel. Recheck with a level. Repeat the
relevel the vehicle using the yellow level lights on the
the front up more. Again, unlevel the vehicle then
the front yellow light to stay on slightly longer to bring
instructions for LED’s A, B, C, and D. This will allow
the OPPOSITE direction that is given in the above
Move the adjustment for that light very, very, slightly in
which sensing unit light is the front light, A-B-C or D.
yellow level light is turning off too soon. Determine
properly.
Example: After the initial adjustment and releveling
sensing unit, ignoring the LED’s on the sensing unit.
yellow level lights go out, instead just "tweak" the
needed, DO NOT try to adjust the sensing unit until the
LEVEL lights. Recheck the level. If more adjustment is
lights are on. Level the vehicle according to the yellow
vehicle to an unlevel position so one or two yellow
IMPORTANT: When all 4 LED’s are off, move the
If LED (D) is lit: Turn the adjustment nut CLOCKWISE
If LED (B) is lit: Turn the adjustment nut COUNTER
If LED (C) is lit: Turn the adjustment screw CLOCKWISE
If LED (A) is lit: Turn the adjustment screw COUNTER
NOTE: If opposing LED’s are lit, there is a problem with
until the LED is off.
CLOCKWISE until the LED is off.
until the LED is off.
CLOCKWISE until the LED is off.
the Sensing Unit.
MP44.1501
(OLD STYLE)
NUT (7/8" or 3/4")
ADJUSTMENT
NUT (5/16" OLD) - (1/2" NEW)
ADJUSTMENT
ADJUSTMENT
SCREW (Phillips or 1/4")
CONTROL BOX - SIDE VIEW
ADJUSTMENT NUT (5/16" OLD) - (1/2" NEW)
ADJUSTMENT NUT (7/8" or 3/4")
MAY BE DIFFERENT
LED’S - LOCATION
ADJUSTMENT SCREW (Phillips or 1/4")
SENSING UNIT - TOP VIEW
D
A
B
(OLD STYLE)
C
CONTROL
BOX WALL
end wrenches of 7/8, 3/4, 1/2, 5/16 or 1/4 sizes will be needed.
needed. A Phillips screw driver or sockets w/driver or box
Touch Panel, manual adjustments to the Sensing Unit are
properly adjusted. If there are yellow LEVEL lights lit on the
are no yellow lights lit on the Touch Panel, the sensing unit is
With the vehicle level according to the bubble level, if there
SENSING UNIT MAINTENANCE/SERVICE

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