HWH 2000 SERIES User manual

HWH COMPUTER-CONTROLLED
OPERATOR’S MANUAL
2000 SERIES
LEVELING SYSTEM
18JUN09
ML44982/MP04.3945
AP44981
www.hwh.com
Ph: 800/321-3494 (or) 563/724-3396 | Fax: [phone]
2096 Moscow Road | Moscow, Iowa 52760
(On I-80, Exit 267 South)
HWH CORPORATION
FEATURING:
CORPORATION
W
HH
R
BI-AXIS Hydraulic Leveling
Straight-Acting Jacks
Multiple Room Extensions
Hydraulic Joey Beds
R

OPERATING MANUAL
MP14.0004
17APR12
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, ROOM EXTENSIONS AND OTHER
MOVABLE MECHANISMS ARE BEING OPERATED.
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.

MP25.999
5
18MAR2
1
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 three 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 three 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 three or six minutes without allowing the pump motor to cool for
DO NOT run the pump more than three or six minutes without allowing the
DO NOT turn the system
DO NOT continue without allowin
g
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 three 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

MP34.0218
17JUN09
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, retract
the jacks according to the JACK RETRACTION Section and
then restart the leveling process.
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.
EXTENDED CAN CAUSE SEVERE DAMAGE TO THE
MOVING THE VEHICLE WITH THE LEVELING JACKS
VEHICLE IS EQUIPPED WITH STRAIGHT-ACTING JACKS.
THE GROUND OR IN THE EXTEND POSITION. THIS
THE LEVELING JACKS ARE STILL IN CONTACT WITH
DO NOT MOVE THE VEHICLE WHILECAUTION:
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, jacks, joey beds or generator slides
DO NOT MOVE THE VEHICLE IF ONE
OR MORE JACKS ARE EXTENDED TO THE GROUND.
CAUTION:
should be fully retracted before traveling.
JACKS AND OR THE VEHICLE AND CREATE A DRIVING
HAZARD. DO NOT RELY SOLELY UPON WARNING
The main controls for the leveling system and room extensions
are supplied by the vehicle manufacturer. Refer to the vehicle
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
INDICATORS. IT IS THE OPERATOR’S RESPONSIBILITY
TO CHECK THAT ALL JACKS ARE FULLY RETRACTED
INTO THE STORE/TRAVEL POSITION.
MASTER JACKS DOWN WARNING LIGHT:
manufacturer for leveling system and room extension control
instructions.
The park brake must be set to use the leveling system,
room extensions and joey beds.
The Master
Jacks Down Warning light is on the auxiliary switch panel
below the HWH Reset Switch.
HWH LIGHTED RESET SWITCH
continuing hydraulic operations.
operation can continue. Allow the pump to cool before
ignition is on. The reset button must be pushed before any
CAN network down. The lighted reset switch will be on if the
Excessive operation of the hydraulic pump can shut the HWH
before any room or the leveling system can be operated.
If the lighted reset switch is on, the switch must be pushed
THE VEHICLE CAN RETURN TO RIDE HEIGHT WITHOUT
POSITION AND THE LIGHTED RESET SWITCH IS ON,
IF THE IGNITION IS IN THE "ON"
The vehicle suspension will return to the travel mode if the
system. No rooms or the Leveling System will operate.
is a problem with the central control module of the network
If the lighted reset switch will not go out when pushed, there
the other rooms or leveling system after the reset switch is
the use of the room extensions after the reset switch is
A network problem with the leveling system will not inhibit
A network problem with one room will not inhibit the use of
ignition key is in the "ON" position.
RELEASING THE PARK BRAKE.
CAUTION:
pushed.
pushed.
The HWH lighted reset switch is located on the auxiliary
switch panel in the hydraulic pump compartment. If there is a
failure at any time in the HWH CAN network, the network will
shut down. The leveling system and all room extensions will
not operate. If the ignition is off, no indicator lights will come
on. If the ignition is in the "ON" position, the lighted reset
switch and the MASTER WARNING Light will come on.
OPERATING PROCEDURES
APEX SYSTEM

MP34.2712
17JUN09
OPERATING PROCEDURES
AUTOMATIC HYDRAULIC LEVELING
and place a pad under each jack if the ground will not
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
Place transmission in the recommended position for
support the vehicle.
Turn the ignition switch to the "OFF" position.
APEX SYSTEM
Refer to the vehicle manufacturer for leveling system
operating instructions.
AUTO LEVEL SEQUENCE: During the automatic leveling
sequence, after the system has extended the appropriate
jacks to level the vehicle, the system will then stabilize the
vehicle. Stabilizing the vehicle is accomplished by extending
any jacks to the ground that were not used to level the
vehicle. This is done by monitoring a pressure switch on
each jack. Any jack used to stabilize the vehicle will lift the
vehicle approximately one (1) inch. This "bumps" the vehicle
up slightly when stabilizing.

MP34.2811
18JUN09
WARNING: JACK RETRACTION 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.
CAUTION: 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 INDICATORS. 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 jacks are in
the STORE/TRAVEL position.
THE STORE/TRAVEL POSITION.
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.
IMPORTANT: If power to the system is interrupted
after starting a store procedure, the store procedure
should be reinitiated and the jacks should be
completely retracted.
OPERATING PROCEDURES
APEX SYSTEM
operating instructions.
Refer to the vehicle manufacturer for leveling system
1. Start the "AUTO STORE" function. The front jacks will
retract for 2 seconds before the rear jacks will begin to retract.
The system will automatically shut down six minutes after the
four jacks are fully retracted.

MP34.3307
17JUN09
MANUAL JACK RETRACTION
enough to allow the jacks to retract.
harder. Make sure the valves have been opened far
As the valve starts to open, the T-Handles will turn
Valve release T-Handles will turn several turns easily.
IMPORTANT: Only open the valves enough to retract
the jacks. DO NOT turn valve release nuts more than
4 and 1/2 turns. Turning the nuts more could damage
the valves.
outer positions and 2 small valves in the center positions.
4 small valves and some will have 2 large valves in the
NOTE: Some assemblies have 4 large valves, some have
retract the jacks for travel.
only if the "AUTO STORE" button on the control panel will not
valve release nut. Use the manual valve release for retracting
have a valve release T-Handle. The small valves have a
equipped with a manual valve release. The large valves
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.
CAUTION:KEEP AWAY FROM THE WHEELS,
T-HANDLE
BREATHER CAP
ASSEMBLY
VALVE
POWER UNIT
RELEASE
NUT
VALVE
VALVE RELEASE
point as internal damage may occur to the solenoid.
with the Operators Manual. As of APRIL 2002 the
NOTE: Prior to APRIL 2002 a 1/4" Nut Driver was sent
1/4" Nut Driver has been incorporated into the Breather
Cap. See the back page of this manual for further info.
5. Check that all four jacks are now retracted.
6. Close the valves by turning the manual valve releases
DO NOT tighten the manual valve release past this
IMPORTANT: Once the manual valve release is snug,
7. The system should now be repaired before using again.
3. Retract the front jacks by opening the two center valves.
Slowly turn the manual valve releases counter clockwise
4. Repeat the process for the rear jacks by opening the two
SOLENOID VALVES
until the jacks start to retract.
clockwise.
outer valves.
APEX SYSTEM
OPERATING PROCEDURES

ROOM EXTEND PROCEDURE
Unlock all room-locking devices.
the room remove it before extending the room.
WARNING:
extend the room. halt the operation of the room.
ROOM RETRACT PROCEDURE
halt the operation of the room.
1. Engage all room-locking devices.
IMPORTANT: Room-locking devices should be locked
while traveling.
KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM WHEN OPERATING.
2. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
NOTE:
NOTE:
NOTE: If the MANUAL RETRACT WINCH is attached to
NOTE: Make sure there is adequate clearance to fully
NOTE: Releasing the ROOM CONTROL will
NOTE: Releasing the ROOM CONTROL will
NOTE:
The park brake must be set before a room can be
extended or retracted.
The park brake must be set before a room can be
extended or retracted.
is fully extended or stops moving.
"EXTEND" position for more than ten seconds after the room
of the room, do not reverse direction of the room until
seconds after the room is fully extended. This assures proper
Hold the room control to "EXTEND" three or four
pressurization of the cylinders.
Do not hold the ROOM CONTROL in theIMPORTANT:
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.
stops moving, release the room control immediately. DO
NOT force the room. DO NOT reverse direction of the
for assistance 1-800-321-3494.
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 room control to "RETRACT" three or four
seconds after the room is fully retracted. This assures proper
has been fully extended.
pressurization of the cylinders.
NOTE:
MP34.430
9
06MAY1
9
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
The room controls are supplied by the vehicle manufacturer
.
Refer to the vehicle manufacturer for room control operating
instructions.
If either side of the room
room, contact HWH Customer Service
KEEP PEOPLE AND OBSTRUCTIONSWARNING:
CLEAR OF ROOM WHEN OPERATING.
Refer to the vehicle manufacturer for room control operating
The room controls are supplied by the vehicle manufacturer.
instructions.
NOT force the room. DO NOT reverse direction of the
stops moving, release the room control immediately. DO
If either side of the room
"EXTEND" position for more than ten seconds after the room
Do not hold the ROOM CONTROL in the
room, contact HWH Customer Service
for assistance 1-800-321-3494.
is fully extended or stops moving.
IMPORTANT:
OPERATING PROCEDURES
APEX SYSTEM
Refer to vehicle manufacturer for proper sequence of
room extension and leveling system operation.
Refer to vehicle manufacturer for proper sequence of
room extension and leveling system operation.

AUXILIARY ROOM CONTROL SWITCHES
MP34.5500
17JUN09
OPERATING PROCEDURES
APEX SYSTEM
The vehicle is equipped with auxiliary room control switches.
The auxiliary switch panel is in the passenger side front
compartment with the hydraulic pump assembly.
IMPORTANT: REFER TO "ROOM EXTEND PROCEDURE"
FOR ROOM OPERATION INFORMATION.
The park brake must be set to use the auxiliary room
control switches.
The auxiliary switch panel has a master power switch that
must be on to use the auxiliary room switches.
IMPORTANT: SOMEONE MUST WATCH THE ROOMS
WHEN USING THE AUXILIARY ROOM CONTROL
SWITCHES.
JOEY BED OPERATION
WARNING: KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF JOEY BEDS WHEN OPERATING.
NOTE: Make sure there is adequate clearance to fully
extend the Joey beds.
Joey bed switches are on the outside of the vehicle on the
drivers side and passengers side front rooms.
The storage compartment light switch must be on to use
the outside Joey bed switches.
The park brake switch must be set to use the Joey bed.
IMPORTANT: DO NOT TRY TO FORCE THE JOEY BEDS
IF THE PUMP IS RUNNING AND THE JOEY BEDS DO NOT
MOVE. DO NOT HOLD THE MAIN OR AUXILIARY JOEY
BED SWITCHES FOR MORE THAN 10 SECONDS IF THE
JOEY BEDS ARE NOT MOVING.
The auxiliary switch panel in the hydraulic pump compartment
has auxiliary Joey bed switches.
The Master Power switch on the auxiliary switch panel must
be on to use the auxiliary Joey bed control switches.
AUXILIARY PUMP OPERATION
The vehicle is equipped with an auxiliary hydraulic pump for
the leveling system, room extensions and the Joey beds.
The hydraulic pump assembly is in the passenger side front
compartment. There are two toggle switches; one labeled
"PRIMARY / AUXILIARY, the other is "MANUAL RUN".
The MANUAL RUN switch is a momentary switch that can
be used to run either the primary or auxiliary pump from the
pump compartment.
IMPORTANT: DO NOT RUN THE PUMP FOR MORE THAN
10 SECONDS IF THE JACKS, ROOMS OR JOEY BEDS
ARE NOT MOVING.
The PRIMARY / AUXILIARY switch chooses which pump is
being used. The switch should remain in the PRIMARY
position unless the primary pump is not working.
NOTE: It is a good idea to occasionally exercise
the auxiliary pump.

MP34.950
0
20JUN1
4
MANUAL ROOM AND GENERATOR SLIDE RETRACT PROCEDURE
OVERVIEW
1. Retract jacks following the LEVELING SYSTEM
RETRACT PROCEDURE.
2. Locate the HYDRAULIC PUMP and/or 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.
WARNING:
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 lockin
g
devices. Leave the retract winch engaged and the solenoid
WARNING: THE ROOM EXTENSION SOLENOID
VALVE RELEASE MUST BE IN THE OPEN POSITION
WHEN THE MANUAL RETRACT WINCH IS ENGAGED.
7. The system should be repaired before using again.
WARNING: A MANUAL RETRACT WINCH PROVIDED
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 TO DIFFICULT
STOP AND CHECK FOR OBSTRUCTIONS/RESTRICTIONS
ON THE ROOM AND ROOM EXTENSION MECHANISM.
LEVELING SYSTEM MANIFOLD NOT SHOWN
SOLENOID VALVES
VALVE
RELEASE
NUT 1/4"
CAM
VALVE
RELEASE
3. Open Nut Style Solenoid Valves by slowly turning the
valve release nut counter clockwise using a 1/4" nut driver.
Only open the valves enough to retract NOTE: After repairs are made, when closing the
VALVE RELEASE NUTS, do not over tighten the nuts.
When manually retracting the room, it is recommended
the jacks are retracted before retracting the room.
BY HWH IS 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 WARNINGS AND INSTRUCTIONS
MAY CAUSE FAILURE OF THE MANUAL RETRACT WINCH OR
CONNECTIONS RESULTING IN DAMAGE OR PERSONAL INJURY.
MAINTAIN A 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.
the room. DO NOT turn the release nuts more than
4 and 1/2 turns. Turning the nuts more could damage
the valves.
4. Locate the MANUAL RETRACT DEVICE and connect it to
the room according to the vehicle manufacturer’s instructions
.
To extend a 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.
valves open.
(USE ONLY WHEN THE ROOM WILL NOT RETRACT WITH THE ROOM CONTROL SWITCH)
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 retract device and information for connecting
the device to the room.
Open Cam Style Style Solenoid Valves by following the
instructions located on the last page of this manual
MP84.9999.
Some systems may have a remote manifold.

"UNIVERSAL STRAIGHT OUT" ROOM EXTENSION MECHANISM
MANUAL ROOM RETRACTION PROCEDURES
MP34.9556
31JAN12
OPERATING PROCEDURES
PLATE
RECEIVER
ROD
THREADED
ROOM EXTENDED
THREADED
BLOCK
ROOM RETRACTED
BLOCK
THREADED
THREADED
ROD
4. 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
6. Repeat steps 4 and 5 alternating from mechanism to
mechanism rotating each threaded rod 12 complete
turns until room is sealed. (DO NOT exceed 15
5. Return to the first room extension mechanism and rotate
the threaded rod clockwise 12 complete turns.
the threaded rod clockwise 12 complete turns.
ft.lbs) Make sure the room does not bind.
1-800-321-3494.
Do Not use an impact wrench.
either mechanism’s threaded rod clockwise 6 complete turns.
a personal wrench or a tire iron with a 1-1/8" opening rotate
3. Using wrench provided, threaded rods impact the coach wall or the mechanism.
Be careful to not extend the room so far that the
threaded rods out and slightly extending the room.
threaded rods completely, alternate backing the
NOTE: If there is not enough room to remove both
ROOM HAS BEEN SERVICED. ANY SOLENOID VALVES
RODS SHOULD BE COMPLETELY REMOVED.
LEFT OPEN SHOULD BE CLOSED AND THE THREADED
IMPORTANT: DO NOT EXTEND THE ROOM UNTIL THE
threaded rods in place until the room has been
NOTE: Leave the solenoid valves open and the
serviced.
2. Start both threaded rods until resistance is met, one for
the threaded blocks refer to vehicle manufacturer.
NOTE: For location of the threaded rods and to access
the front and one for the rear mechanism should be provided.
SOLENOID VALVES
HYDRAULIC PUMP/MANIFOLD
LEVELING SYSTEM MANIFOLD NOT SHOWN
NOTE: The breather cap dip stick is also a 1/4" nut driver.
nuts more could damage the valves. If equipped with valve
release nuts counter clockwise 4 and 1/2 turns. Turning the
for the extend and retract solenoid valves by turning the 1/4"
assigned to the room. Manually open the valve release nuts
1. Determine which extend and retract solenoid valves are
release cams, move the cams to the OPEN position.
RELEASE
NUT
VALVE
CAP-DIP
BREATHER
STICK
OPEN
RELEASE CAM
VALVE RELEASE
(CLOSED POSITION)

"UNIVERSAL LEVEL OUT" ROOM EXTENSION MECHANISM
MANUAL ROOM LIFT PROCEDURES
MP34.9560
27JAN12
OPERATING PROCEDURES
SOLENOID VALVES
HYDRAULIC PUMP/MANIFOLD
LEVELING SYSTEM MANIFOLD NOT SHOWN
NOTE: The breather cap dip stick is also a 1/4" nut driver.
nuts more could damage the valves. If equipped with valve
release nuts counter clockwise 4 and 1/2 turns. Turning the
for the extend and retract solenoid valves by turning the 1/4"
assigned to the room. Manually open the valve release nuts
1. Determine which extend and retract solenoid valves are
NUT
RELEASE
VALVE
CAP-DIP
BREATHER
STICK
RELEASE CAM
VALVE RELEASE
(CLOSED POSITION)
BOTTOM
GAP
SURFACE
LIFT BOLT
LIFT RAMP
LIFT BOLT
Using a 9/16 wrench
alternate between lift bolts turning each 4 full turns each
the front and one for the rear mechanism should be provided.
2. Start both room lift bolts until resistance is met, one for
NOTE: To locate the room lift access holes and bolts
refer to vehicle manufacturer.
Do Not use an impact wrench.
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.
As the
room is lifted a gap should develop allowing you to
time. Lift the room only as far as is needed to clear the
bottom surface of the room over the lift ramps.
OF ROOM
3.
view the lift ramps more clearly.
4. Follow MANUAL ROOM RETRACT PROCEDURES.
EXTERIOR
COACH
WALL
EXTERIOR
WALL
COACH
END VIEW OF
ROOM EXTENDED
END VIEW OF
ROOM EXTENDED
If this manifold is equipped with an auxiliary hand pump, you
may be able to retract the room by opening only the room
retract valve and operating the hand pump, refer to the
AUXILIARY HAND PUMP OPERATION page for
instruction 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 necessary to
use the lift bolts and room retract screws.
ROOM
EXT
release cams, move the cams to the OPEN position.
OPEN
ROOM
RET

MAINTENANCE
MP44.001
2
13NOV1
7
OIL LEVEL
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 any jack down warning light or buzzer works.
Master jacks down warning indicators should be on if any
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"
clean. from weathering.
jack is extended (1) or more inches and the ignition is in
position.
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.
the "ON" position.
cap before removing.
and steps should be fully retracted before checking fluid
breather cap. Clear any dirt away from the breather / filler
assembly. The oil level is checked and filled through the
level. The oil reservoir is part of the pump / manifold
Any HWH hydraulic equipment, including jacks, slide-outs
servicing of the coach.
All maintenance should be done as part of the normal
there is an oil leak in the system.
purchased and then once every two years. More often if
The oil level should be checked when the vehicle is first should be between the bottom of the dipstick and the
reservoir. Most breather caps have a dipstick. Fluid level
The oil level should be within one inch of the top of the
emergency Dexron automatic transmission fluid can be used
.
Dexron automatic transmission fluid contains red dye
and can cause staining should a leak occur. DO NOT USE
brake fluid or hydraulic jack fluid. Use of these can damage
HWH Specialty Hydraulic Oil is recommended. In an
NOTE: Overfilling the tank can cause leakage of oil
through the breather cap.
center mark.
FLUID:
NOTE:
seals.

MAINTENANCE
MP44.050
9
21NOV1
6
WINTER WEATHER DRIVING
components, such as HWH jacks.
have dried. This can facilitate corrosion of metallic
Anti-icing / deicing agents when splashed on your vehicle,
continue to absorb moisture from the air even after they icing / deicing agents, thoroughly wash jacks with warm
To help reduce the corrosion of jacks after exposure to anti
-
soapy water.

SENSING UNIT - TOP VIEW
D
C
A
B
LED’S - LOCATION
CONTROL BOX - SIDE VIEW
MAY BE DIFFERENT
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.
20APR09
MP44.1501
ADJUSTMENT
NUT (7/8" or 3/4")
BOX WALL
CONTROL
SCREW (Phillips or 1/4")
ADJUSTMENT
NUT (5/16" OLD) - (1/2" NEW)
ADJUSTMENT
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.
(OLD STYLE)
ADJUSTMENT SCREW (Phillips or 1/4")
ADJUSTMENT NUT (5/16" OLD) - (1/2" NEW)
MP45.3259
ADJUSTMENT NUT (7/8" or 3/4")
(OLD STYLE)
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. A Phillips screw driver or sockets w/driver or box
end wrenches of 7/8, 3/4, 1/2, 5/16 or 1/4 sizes will be needed.
SENSING UNIT MAINTENANCE/SERVICE

MP64.9910
17JUN09
HYDRAULIC CONNECTION DIAGRAM
APEX SYSTEM

MP64.9911
17JUN09
HYDRAULIC CONNECTION DIAGRAM
APEX SYSTEM

MP64.9912
17JUN09
HYDRAULIC CONNECTION DIAGRAM
APEX SYSTEM

MP64.9913
17JUN09
HYDRAULIC CONNECTION DIAGRAM
APEX SYSTEM

MP64.9914
17JUN09
HYDRAULIC CONNECTION DIAGRAM
APEX SYSTEM