HWH 610 SERIES User manual

H
CORPORATION
H
W
R
HWH CORPORATION
2096 MOSCOW ROAD
MOSCOW, IOWA 52760
[phone] / [phone]
FEATURING:
TOUCH PANEL CONTROL
HYDRAULIC LEVELING
LEVELING SYSTEM
OPERATOR’S MANUAL
ML17005/MP05.5209
21MAR01
610 SERIES
STRAIGHT-ACTING JACKS
ROOM EXTENSION SYSTEM
HWH COMPUTER-CONTROLLED
INTERNET: http: //www.hwhcorp.com
CAUTION!
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SLOPE
EXCESS
PARK
NOT IN
TRAVEL
HWH COMPUTERIZED LEVELING
lLEVEL
OFF
STORE
ON
(WITH SYNCHRONIZING CYLINDER)
(ON I-80, EXIT 267 SOUTH)

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

CONTROL IDENTIFICATION
MP25.5020
07MAY99
ON
HWH COMPUTERIZED LEVELING
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
EXCESS
SLOPE
NOT IN
PARK
TRAVEL
OFF CAUTION!
STORE
"EXCESS SLOPE"
LIGHT
"NOT IN PARK" LIGHT
HYDRAULIC OPERATION
LIGHT
"I" ON BUTTON
"STORE" BUTTON
"OFF" BUTTON
"TRAVEL" LIGHT
LOW BATTERY
FRONT RETRACT BUTTON
FRONT EXTEND BUTTON
WARNING LIGHTS
(4- Red)
RIGHT SIDE EXTEND BUTTON
RIGHT SIDE RETRACT BUTTON
LEVELING LIGHTS
(4- Yellow)
REAR EXTEND BUTTON
REAR RETRACT BUTTON
STORE LIGHT
LEFT SIDE EXTEND LEFT SIDE RETRACT
operation.
button. The on indicator light is above the "I" button.
"STORE" button. This button is used to automatically retract
the jacks.
controlling the jacks. They will operate the jacks in pairs, right
side, left side, front and rear. Pushing UP arrows will cause
the jacks to extend and raise the vehicle.The DOWN arrows
will cause the jacks to retract.
leveling system cannot level the vehicle.
ignition is on, when the jacks are retracted and there are no
red WARNING lights on.
controller senses low voltage.
master "JACKS DOWN" warning light is on.
CONTROL FUNCTIONS
INDICATOR LIGHTS
CONTROLS
lLEVEL
tem is in the store mode.
"OFF" BUTTON: Push the "OFF" button to stop hydraulic
"I" BUTTON: This is the on button and automatic operation
"STORE" BUTTON: The store indicator light is above the
UP AND DOWN ARROWS: These buttons are for manually
LEVELING LIGHTS:
JACK STORAGE LIGHT: This light will flash when the sys-
JACK DOWN WARNING LIGHTS: The four red lights sur-
rounding the yellow level indicators are jack WARNING lights.
They are functional only when the ignition is in the "ON" or
"ACC" position, the system is on, and the jacks are extended
2 or more inches.
"EXCESS SLOPE" LIGHT: This indicator will light when the
"NOT IN PARK/BRAKE" LIGHT: This indicator will light
when the panel is on and the hand/auto brake is not set.
"TRAVEL" LIGHT: This indicator light will be on when the
LOW BATTERY LIGHT: This indicator will be on when the
MASTER "JACKS DOWN" WARNING LIGHT:
mounted in the dash separate from the touch panel. It will be
on when any one or more jacks are extended and the ignition
is "ON".
This is a light
BUZZER: This is a jacks down warning. It will sound if the
The four yellow indicating lights are lev-
el sensing indicators. When a yellow light is on, it indicates
BUTTON BUTTON
LIGHT
that its side, end or corner of the vehicle is low. No more than
two lights should be on at the same time.

CONTROL FUNCTIONS
CONTROL IDENTIFICATION
MP25.9405
30JAN97
CORPORATION
H
CAUTION!
CLEAR OF ROOM WHEN OPERATING.
UNDERSTAND OPERATOR’S MANUAL BEFORE
USING. KEEP PEOPLE AND OBSTRUCTIONS
HYDRAULIC ROOM EXTENSION
OFF
ON
RETRACT
H
W
R
EXTEND ROOM CONTROL
SWITCH
KEY SWITCH
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.
ROOM OPERATOR’S PANEL
KEY
KEY SWITCH: ROOM CONTROL SWITCH:

OPERATING PROCEDURES
MP35.5002
20NOV07
GENERAL INSTRUCTIONS
PREPARATION FOR TRAVEL
If parking on soft ground ar asphalt paving, wood blocks or
pads must be placed under the jacks.
Press the "OFF" button and turn the ignition switch "OFF" at
any time to stop the operation of the system.
Any time a hydraulic leveling process is interrupted, retract the
jacks according to the JACK RETRACTION Section and then
restart the leveling process.
If the "LOW BATTERY" indicator is on, the system should be
If the hand / auto brake is not set when the "I" button is pres-
sed, the "NOT IN PARK/BRAKE" light will come on and the
system will not operate.
checked. Battery voltage should be checked, also all connections
should be checked.
Before traveling, the red jack warning lights must be off and
the "TRAVEL" light must be on. If lights are not correct for
travel, retract jack as described in the JACK RETRACTION
Section.
If the jacks are retracted but a red "WARNING" light is lit or the
green "TRAVEL" light is not 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 should be checked.
WARNING LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY
CREATE A DRIVING HAZARD. DO NOT RELY SOLELY UPON
SEVERE DAMAGE TO THE JACKS AND OR THE VEHICLE AND
WITH THE LEVELING JACKS EXTENDED CAN CAUSE
WITH STRAIGHT-ACTING JACKS. MOVING THE VEHICLE
OR IN THE EXTEND POSITION. THIS VEHICLE IS EQUIPPED
LEVELING JACKS ARE STILL IN CONTACT WITH THE GROUND
DO NOT MOVE THE VEHICLE WHILE THE CAUTION:
ROOM EXTENSION PROCEDURES
This vehicle is equipped with a room extension
read this section carefully.
IMPORTANT:
vehicle is supported by the leveling system.
Do not use a room extension support when the
Refer to the vehicle owner’s manual for proper operation of
IMPORTANT:
room extensions.
Do NOT operate any room extension until the leveling and
stabilizing procedure is complete. Do NOT retract the leveling
system until all room extensions are retracted. Do NOT ope-
rate the leveling system when any room extensions are ex-
tended.
CAUTION: DO NO MOVE THE VEHICLE IF A WARN-
ING LIGHT OR BUZZER IS ON.
TO VISUALLY CHECK THAT ALL JACKS ARE FULLY RE-
All room extensions must be fully retracted before moving the
vehicle.
TRACTED INTO THE STORE/TRAVEL POSITION. DO NOT
MOVE THE VEHICLE IF ANY ROOM EXTENSION IS EXTEND-
ED. ROOMS MUST BE FULLY RETRACTED BEFORE MOVING
THE VEHICLE. SEE THE MANUAL ROOM RETRACT PRO-
CEDURE IF THE ROOM CANNOT BE RETRACTED WITH THE
ROOM EXTENSION OPERATOR’S PANEL.

OPERATING PROCEDURES
MP35.5003
08DEC03
leveling and stabilizing, it will automatically shut off.
until they touch the ground. After the system has finished
jack to level the vehicle and then extend any remaining jacks
will start to flash. The system will automatically extend the
parking vehicle and set parking brake. Turn the ignition to
4. Press the "I" button a second time. The "I" indicator light
place pads under the jacks if the ground will not support the
3. At this time, the operator may want to check the jacks and
The "I" indicator light will glow steady.
2. Press the "I" button to enter the hydraulic operation mode.
the "ACCESSORY" position.
1. Place transmission in the recommended position for
vehicle.
AUTOMATIC HYDRAULIC LEVELING
as possible according to the MANUAL HYDRAULIC
vehicle to a more level position or level the vehicle as close
according to the JACK RETRACTION Section. Move the
the "EXCESS SLOPE" light comes on. Store the jacks
will shut off. The system will NOT stabilize the vehicle if
light will continue to blink for 10 seconds, then the system
leveling indicator lights will remain on. The "HYD" indicator
light will come on. The pump will shut off. One or two yellow
unable to level the coach, the "EXCESS SLOPE" indicator
EXCESS SLOPE SITUATION: In the event the jacks are
5. Turn the ignition switch to the "OFF" position.
ROOM EXTEND PROCEDURE
CAUTION: OPERATING THE ROOM WITH ANY
ROOM-LOCKING DEVICES LOCKED OR THE MANUAL-
RETRACT WINCH ATTACHED CAN CAUSE PERSONAL
INJURY AND VEHICLE DAMAGE. IT IS THE OPERATOR’S
RESPONSIBILITY TO ENSURE THAT ALL ROOM-LOCKING
DEVICES AND THE MANUAL-RETRACT WINCH ARE
DISENGAGED BEFORE OPERATING THE ROOM.
1. Follow the LEVELING AND STABILIZING PROCEDURE.
2. Unlock all room-locking devices.
the room remove it before extending the room.
CAUTION: KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM WHEN OPERATING.
extend the room.
3. Turn the ignition switch to ACCESSORY.
4. Press the "I" BUTTON if the HYDRAULIC OPERATION
LIGHT is not illuminated. Refer to the Control Identification
page.
6. To extend the room, press and hold the
ROOM CONTROL SWITCH in the "EXTEND" position
until the room is fully extended.
the operation of the room.
7. Press the "OFF" BUTTON.
8. Turn off the ignition switch.
IMPORTANT: Do not use the room extension support
when the vehicle is supported by the leveling system.
LIGHT and a JACK DOWN WARNING LIGHT must be
illuminated. The room will not extend if the system is in
automatic leveling or retract.
NOTE: To operate the room, the HYDRAULIC OPERATION
NOTE: Releasing the ROOM CONTROL SWITCH will halt
NOTE: If the MANUAL RETRACT WINCH is attached to
NOTE: Make sure there is adequate clearance to fully
5. Insert the KEY and turn the KEY SWITCH to the "ON"
position.
OPERATION Section.
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.
IMPORTANT: Extending or retracting any leveling jacks
when the room is extended is not recommended.
IMPORTANT: It is recommended to level and stabilize
the vehicle before extending the room.
not operate if the park brake is not set.
NOTE: The park brake must be set. The room will

OPERATING PROCEDURES
MP35.5004
22JAN02
ROOM RETRACT PROCEDURE
CAUTION: KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF THE ROOM WHEN OPERATING.
1. Turn the ignition switch to ACCESSORY.
2. Press the "HYD" BUTTON.
To retract the room the HYDRAULIC OPERATION
LIGHT must be illuminated. A WARNING LIGHT does NOT
need to be on.
4. To retract the room press and hold the
ROOM CONTROL SWITCH in the "RETRACT" position
until the room is fully retracted.
Releasing the ROOM CONTROL SWITCH will halt
the operation of the room.
6. Press the "OFF" Button or let the system continue to
STORE.
7. Turn the ignition switch off.
8. Engage all room-locking devices.
9. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
Room-locking devices should be locked
while traveling.
IMPORTANT:
The room can be retracted ten seconds after the
leveling system is put in the STORE mode. This will interrupt
the STORE mode unitl the ROOM CONTROL SWITCH
is released. The leveling system will continue to STORE
starting from the beginning of the program.
NOTE:
NOTE: NOTE:
3. Insert the KEY and turn the KEY SWITCH to the "ON"
position. 5. Turn the KEY SWITCH to the "OFF" position and remove the KEY.
IMPORTANT: If the leveling system is in the "STORE"
mode, do not press the "OFF" button.
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:

OPERATING PROCEDURES
MP35.5018
06JUL05
JACK RETRACTION
the system in the store mode, the vehicle may be moved
store mode. If the engine was started before putting
the jacks are in the STORE/TRAVEL position and the room
lights are out and the green "TRAVEL" light is on, providing
out. The vehicle can be moved as soon as the red WARNING
Press the "I" button one time. The "I" indicator light will glow
1. Turn the ignition switch to "ON", "ACC", or start the engine.
flash. As each jack retracts, its red WARNING light will go
2. Press the "STORE" button. The store indicator light will
The system must be allowed to completely finish the
DO NOT push the "OFF" button or turn the ignition key.
system while the "STORE" indicator light is blinking.
AND THAT ALL PEOPLE ARE CLEAR OF THE VEHICLE.
THAT THERE ARE NO OBJECTS UNDER THE VEHICLE
is fully retracted.
IMPORTANT: DO NOT interrupt power to the leveling
steady.
CAUTION: THE OPERATOR MUST BE SURE DO NOT MOVE THE VEHICLE WHILE THE
"WARNING" lights condition.
see MANUAL JACK RETRACTION Section.
CAUTION:
when the jacks are in the STORE/TRAVEL position. This
store for thirty (30) minutes, then shut down regardless of the
"WARNING" light does not go out, the system will continue to
four individual red "WARNING" lights are out. If any one red
3. The system will automatically shut down six minutes after the
LEVELING JACKS OR THE ROOM EXTENSION ARE STILL
4. If jacks cannot be retracted by the above procedure
IN CONTACT WITH THE GROUND OR IN THE EXTEND
POSITION. THIS VEHICLE IS EQUIPPED WITH STRAIGHT-
ACTING JACKS AND A ROOM EXTENSION. MOVING
THE VEHICLE WITH THE LEVELING JACKS AND/OR THE
ROOM EXTENDED CAN CAUSE SEVERE DAMAGE TO THE
JACKS OR THE VEHICLE AND CREATE A DRIVING
HAZARD. DO NOT RELY SOLELY ON THE WARNING
LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY TO
VISUALLY CHECK THAT ALL JACKS AND THE ROOM EX-
TENSION ARE FULLY RETRACTED INTO THE STORE/
TRAVEL POSITION.
NOTE:
RETRACT will interrupt the STORE mode. The system
will continue to STORE after the ROOM CONTROL
Pushing the ROOM CONTROL SWITCH to
EXTEND POSITION STORE/TRAVEL POSITION
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
will not interrupt the store procedure.
SWITCH is released.

OPERATING PROCEDURES
MP35.5023
24NOV99
CAUTION:
IMPORTANT:
MANUAL JACK RETRACTION
MANUAL HYDRAULIC OPERATION
1. Place transmission in the recommended position for parking
2. Press the "I" button. The indicator light will glow steady.
3. 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 buttons
on the right half of the panel. If a yellow LEVEL SENSING
light is on, that side or end of the vehicle is low. Jacks will extend
(or retract) in pairs to raise (or lower) a side or end of the vehicle.
Any jack not used for leveling can be extended to the ground.
This provides additional stability against wind and activity in
Do not continue to push an EXTEND button
for more than ten (10) seconds after that pair of jacks are fully
5. When leveling is completed, push the "OFF" button on the
touch panel and turn the ignition switch to the "OFF" position.
KEEP AWAY FROM THE WHEELS, DO
NOT CRAWL UNDER THE VEHICLE, KEEP A SAFE DISTANCE
IN FRONT AND REAR OF VEHICLE. THE VEHICLE MAY
DROP AND/OR MOVE FORWARD OR BACKWARD WITH-
OUT WARNING AS THE VALVE RELEASE IS OPERATED.
NOTE:
if the "STORE" button on the control panel will not retract the
jacks for travel.
1. Locate the 4 valve release "T" handles on the solenoid valves.
The solenoid valves are located on the pump/valve assembly. See
2. Allow clearance for vehicle to lower.
3. Retract the rear jacks by opening the two outer valves. Slowly
turn the "T" handles counter clockwise. The handles may turn
easily at first but as an internal spring is compressed, turning
may become more difficult. The valves need only to be opened
enough to retract the jack.
4. Retract the front jacks by opening the two center valves as
described in Step 3.
5. Check that all four jacks are now retracted.
6. Close the valves by turning the release handles clockwise.
Once the internal spring tension has been released, the handles
will turn free for several turns. Once the "T" handles are snug,
DO NOT tighten the handles past this point as internal damage
may occur to the solenoid.
7. The system should now be repaired before using again.
the vehicle.
the vehicle, and set the parking brake. Turn the ignition to the
"ACCESSORY" position.
the "Hydraulic Line Connection Diagram Leveling System."
extended.
Use the valve release "T" handles for retracting only
"T" HANDLES
VALVE RELEASE
PUMP/MANIFOLD
ASSEMBLY SHUTTLE
VALVE
ROOM EXTENSION MANIFOLD NOT SHOWN

MP35.9490
02FEB12
MANUAL ROOM RETRACT PROCEDURE
1. Retract jacks following the LEVELING SYSTEM RETRACT
PROCEDURE.
2. Locate the HYDRAULIC PUMP/MANIFOLD unit.
3. Open the SOLENOID VALVES by turning the "T" HANDLES
counterclockwise.
will become more difficult to turn as an internal spring is
compressed. Be sure to open both valves completely
(about six turns of the "T" HANDLE).
are opened and internal pressure is released.
SOLENOID VALVES
"T"
HANDLES
(USE ONLY WHEN THE ROOM WILL NOT RETRACT WITH THE ROOM CONTROL SWITCH)
WINCH
WINCH STRAP
WINCH HANDLE
RATCHET LEVER
HOOK
MANUAL RETRACT WINCH
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 counterclockwise, 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.
5. Slowly winch the room in by turning the WINCH HANDLE
clockwise. The RATCHET LEVER should produce a loud, sharp,
clicking noise.
hydraulic fluid and make winching more difficult.
WARNING:
ON
OFF
HYDRAULIC PUMP/MANIFOLD
NOTE :
The room may move slightly as the SOLENOID VALVES
NOTE : NOTE : Winching the room in quickly will raise pressure in the
NOTE : The "T" HANDLE may turn easily at first but
6. When the room is fully retracted, engage the room locking
devices. Leave the retract winch in place.
WARNING: THE ROOM EXTENSION SOLENOID VALVE
"T" HANDLES MUST BE IN THE OPEN POSITION WHEN THE
MANUAL RETRACT WINCH IS ENGAGED.
7. The system should be repaired before using again.
WARNING: THE MANUAL RETRACT WINCH IS
EQUIPPED FOR MANUALLY RETRACTING THE ROOM
ONLY. IT IS NOT TO BE USED FOR LIFTING OR ANY
When manually retracting the room, make sure the
jacks are retracted before retracting the room.
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
OPERATE THE MANUAL RETRACT WINCH
BY HAND POWER ONLY. IF THE WINCH CANNOT BE
CRANKED EASILY WITH ONE HAND IT IS PROBABLY OVER-
LOADED. IF WINCHING BECOMES TOO DIFFICULT STOP
AND CHECK FOR OBSTRUCTIONS OR RESTRICTIONS ON
THE ROOM AND ROOM EXTENSION MECHANISM.
(WITH SOLENOID VALVES WITH VALVE RELEASE "T" HANDLES)
failure prevents the room from being retracted using the
CONTROL SWITCH. For normal retract sequence see the
ROOM SLIDE RETRACT PROCEDURES.
vehicle manufacturer for storage location of the
retract device and information for connecting the
device to the room.
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
OVERVIEW
Refer to the
OR WORN.

MP45.12
29JAN01
MAINTENANCE
with rebuilt parts or can be sent to HWH CORPORATION to
be rebuilt, when the system is out of warranty.
UNUSUAL CONDITIONS
approximately one inch below the top of the reservoir when
Do not move the vehicle while the leveling jacks are still in
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
clean.
All electrical connections, especially ground connections,
should be clean, tight, free from corrosion and protected
from weathering.
OPERATIONAL CHECK
If the red LOW BATTERY indicator light comes on, the
electrical system should be checked. If the light comes on,
can cause erratic operation or damage components.
Contact your dealer or HWH CORPORATION for assistance.
Review the JACK RETRACTION Section.
Make sure the jacks will fully retract to the store position.
Jacks should not interfere with any part of the vehicle when
in the store position.
With the jacks extended, check that the jacks can be
retracted using the "T" handles on the solenoid valves.
Refer to the MANUAL JACK RETRACTION Section.
contact with the ground. Retract the jacks according to the
"JACK RETRACTION" Section and then visually check to
see if the leveling jacks have returned to the
STORE/TRAVEL position.
It is important that the four leveling jacks and the room are
fully retracted before checking the hydraulic oil level. To
check the oil supply, remove the breather cap from the top of
the hydraulic oil reservoir. The oil level should be
NOTE: All major components of the system can be replaced
NOTE:
adequately filled.
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:
If driving conditions are unusually muddy, the jacks may
become caked or clogged with mud. This condition may
hamper the proper operation of the leveling system. This
problem may be prevented or remedied by cleaning off each
leveling jack if they become excessively muddy.
In wet or icy weather leveling jacks may become encrusted
with ice. This may cause the leveling system to function
improperly. To eliminate this problem, periodically check the
leveling jacks and break loose any ice which may be causing
improper operation.
Review the operator manual and run the system in the
automatic and manual mode. Note any abnormal
operation.
Check that all lights work according to the INDICATOR
LIGHT section. Correct function of the four red WARNING
lights is essential to the correct operation of the system.
Check that the vehicle is level when all the yellow LEVEL
indicator lights are out.
The level sensing unit has an accuracy tolerance of
+ or - 1 inch side to side, and + or - 5.4 inches front to rear
on a 36 foot vehicle.
the operation of the system is not interrupted, but low voltage

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

The following is a list of problems, and possible solutions, which might occur to the room extension systems.
1. HYDRAULIC PUMP WILL NOT ACTIVATE WHEN ROOM
TROUBLE SHOOTING
MP55.03
05MAY99
B. A JACK WARNING LIGHT is not on.
E. 12 VOLT power to pump relay not present.
D. PUMP RELAY and/or HYDRAULIC PUMP are not
F. Faulty wire, electrical connection, KEY SWITCH,
2. HYDRAULIC PUMP ACTIVATES, BUT ROOM WILL NOT
A. EXTEND SOLENOID VALVE is not properly grounded.
B. Reservoir oil supply is low.
C. Hydraulic line is pinched or broken.
D. Faulty wire, electrical connection, ROOM CONTROL
PUMP, or HYDRAULIC CYLINDER.
3. HYDRAULIC PUMP ACTIVATES, BUT ROOM WILL NOT
A. RETRACT SOLENOID VALVE IS NOT properly
B. Reservoir oil supply is low.
C. Hydraulic line is pinched or broken.
D. Faulty wire, electrical connection, ROOM CONTROL
PUMP, or HYDRAULIC CYLINDER.
4. ROOM CREEPS OUT AFTER CLOSING.
A. "T" HANDLE on EXTEND SOLENOID VALVE is not
B. EXTEND SOLENOID VALVE has an internal leak.
C. HYDRAULIC CYLINDER has an internal leak.
A. "T" HANDLE on RETRACT SOLENOID VALVE is not closed
B. RETRACT SOLENOID VALVE has an internal leak.
ROOM EXTENSION
CONTROL SWITCH IS PRESSED.
properly grounded.
ROOM CONTROL SWITCH, PUMP RELAY, or PUMP
EXTEND.
SWITCH , EXTEND SOLENOID VALVE, HYDRAULIC
RETRACT.
SWITCH , RETRACT SOLENOID VALVE, HYDRAULIC
closed completely.
completely.
A. KEY SWITCH is in the "OFF" POSITION.
C. FUSE is blown.
D. The MANIFOLD CHECK VALVE is leaking.
NOTE :
MOTOR.
grounded.
5. ROOM CREEPS IN AFTER BEING EXTENDED.
Only qualified technicians should install or repair room systems. A knowledge of hydraulic, welding, the vehicle,s sus-
pension and electrical systems is required. In addition, an understanding of the room extensions system,s hydraulics and elec-
tronics is required.

FRONT
MP65.442F
02MAR99
RF
RR
LF
LR
LR LF RF RR SHUTTLE VALVE
"T" HANDLES
RELEASE
VALVE
RELEASE
VALVE
EXTEND
VALVE
RETRACT
VALVE
"T" HANDLE
LEVELING
SYSTEM
MANIFOLD
ROOM
EXTENSION
MANIFOLD
HYDRAULIC LINE CONNECTION DIAGRAM
610 SERIES LEVELING SYSTEM
DUAL CYLINDER
ROOM EXTENSION SYSTEM W/SYNCHRONIZING CYLINDER
SYNCHRONIZING CYLINDER
HYDRAULIC CYLINDER
HYDRAULIC CYLINDER
STEEL TUBE
NOTE: STEEL TUBE IS USED ON
DUAL CYLINDER "RAIL" ROOM
EXTENSIONS ONLY.
ROD END CAP END
ROD END CAP END
STEEL TUBE
3/16" HIGH
PRESSURE HOSE (B)
3/16" HIGH PRESSURE HOSE (B)
VIEW 1
DUAL CYLINDER ROOM EXTENSION
ROD END 3/16"
HIGH PRESSURE
HOSE CONNECTION
(STEEL TUBE)
HOSE CONNECTION
CAP END
HOSE CONNECTIONS AT THE
REAR OF DUAL CYLINDER
ROOM EXTENSION
VIEW 1
(A)
(A)
THE LINES (B) BETWEEN THE ROD END
OF THE HYDRAULIC CYLINDERS AND THE
SYNCHRONIZING CYLINDER MUST BE THE
SAME LENGTH AND DIAMETER
THE LINES (A) BETWEEN THE CAP
END OF THE HYDRAULIC CYLINDERS
AND THE TEE MUST BE THE SAME
LENGTH AND DIAMETER

12 VOLT D.C.
HYDRAULIC
POWER UNIT
M
RELIEF VALVE
RETURN PRESSURE
SOLENOID MANIFOLD
ASSEMBLY
CHECK
VALVE
INNER
CHECK
VALVE
OUTER
SOL.VALVE
LR SOL.VALVE SOL.VALVE SOL.VALVE
RF RRLF
PRESSURE/RETURN
SHUTTLE VALVE 3000 PSI
SWITCH
JACK
PRESSURE
SWITCH
JACK
CYLINDER
LEFT REAR RIGHT REAR
RIGHT
FRONT
LEFT
FRONT
HYDRAULIC SCHEMATIC
BI-AXIS LEVELING WITH STRAIGHT-ACTING JACKS
MP65.4525
15MAY97

3/8" O.D. TUBE
SUSPENSION
AIR BAGS
SUSPENSION
AIR BAGS
NEW LINE
AIR LINE CONNECTION DIAGRAM
MP75.2
15MAY97
EXISTING
LINE
4 AIR DUMP SOLENOID VALVES
AND 4 HEIGHT CONTROL VALVES
ARE SHOWN.
THE AIR DUMP VALVE IS TO TEE
INTO THE LINE BETWEEN THE
AIR BAG AND THE HEIGHT CONTROL
VALVE. THREE HEIGHT CONTROL
VALVES ARE THE MOST COMMON
ON AIR SUSPENSION SYSTEMS.
2, 3 OR 4 CONTROL VALVES MAY
BE USED.
USE ONLY DOT
APPROVED
FITTINGS AND
TUBING.
HEIGHT
CONTROL
VALVE
AIR DUMP SOLENOID VALVES
ARE ACTIVATED (OPENED) BY
A +12 SIGNAL.
SEE ELECTRICAL
DIAGRAM FOR
CONNECTION
FROM WIRE HARNESS
BA
A
B
A
B
A
B

CONTROL BOX
5 AMP
10 AMP
10 AMP
10 AMP
5 AMP
10 AMP
LEVELING SYSTEM
MP85.355
28JAN99
ELECTRICAL CONNECTION INFORMATION
LR - (BROWN) 4400
RR - (ORANGE) 3400
LF - (BLUE) 1400
RF - (GREEN) 2400
LEVELING SYSTEM
CONTROL BOX
LR GROUND -
(YELLOW/BLACK)
7601
RF GROUND -
(YELLOW) 7600
MANIFOLD
PRESSURE
SWITCH -
(BLACK) 8100
#10 GROUND
WIRE -
(WHITE) 6230
LF FUSE
RF FUSE
RR FUSE
LR FUSE
PUMP - (GRAY) 8600
#10 POWER WIRE -
(BLACK) 6800
MASTER RELAY -
PARK - (BLUE) 9000
ACC. FUSE
ROOM EXTENSION
CONTROL BOX
+12 FROM ACC.
POWER HARNESS -
6120
PART & SERIAL NO.
RED
GREEN
BLACK
YELLOW
WHITE
SENSING
UNIT
INPUT
TOUCH PANEL
CABLE INPUT
LEVELING
SYSTEM
CONTROL
BOX
LR - (PURPLE) 4200
RR - (BROWN) 3200
RF - (ORANGE) 2200
LF - (BLUE) 1200
(RED) 8500
PRESSURE
SWITCH
INPUTS
LR - (GREEN) 4000
RR - (BLACK) 3000
RF - (RED) 2000
LF - (YELLOW) 1000
GND - (WHITE) 6235
WARNING
SWITCH
INPUTS
CONTROL -
(BROWN)
7699
MASTER
WARNING
LIGHT/
BUZZER
OUTPUTS
ROOM EXTENSION
CONTROL BOX
NOTE: THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE COLORS.
PUMP
FUSE

HARNESS
PUMP/MANIFOLD
SEE CONTROL BOX
610 SERIES LEVELING SYSTEMS
ELECTRICAL CONNECTION DIAGRAM
INSTRUCTIONS
POWER UNIT
WIRING DIAGRAM
PUMP RELAY
WIRING DIAGRAM
GROUNDING
MANIFOLD
LR
A
B
WARNING SWITCH
LF
(YELLOW) 1000 (WHITE)
A
B
6235
PRESS. SW. -
(BLUE) 1200
INFORMATION
CONNECTION
WIRE COLORS
SUPERSEDES ANY AND ALL
THE (4) DIGIT WIRE NUMBER
DO NOT REVERSE WIRE
COLORS TO A & B ON
PACKARD CONNECTORS
(WHITE)
APPLYING POWER
CONNECTIONS BEFORE
A
B
3000
(BLACK)
RR
6235
SWITCH HARNESS
WARNING/PRESSURE
NOTE:
TO BOX.
10JUL03
MP85.5003
CONTROL - (BROWN) 7699
CONNECTION DIAGRAM
LIGHT/BUZZER
MASTER WARNING
PANEL
TOUCH
MAKE ALL GROUNDING
2000
(RED)
B
A
(ORANGE) 2200
SWITCH -
PRESSURE
RF
(WHITE) 6235
WARNING SWITCH
TO PARK
BRAKE
SWITCH
(LABELED) -
9000
TO BRAKE
LIGHT ON
DASH
(LABELED) -
9001
FROM +12 ACC.
FUSED 15AMP MAX -
(BROWN) 6120
(BLUE)
9000
PRESS.
SWITCH
(PURPLE)
4200
PRESS.
SWITCH
(BROWN)
3200
WARNING SWITCH
#10 WIRE TO GROUND STUD - (WHITE) 6230
(GREEN)
4000
(WHITE)
6235
FRONT
SENSING UNIT
THIS
SIDE
ELECTRONIC
UP
SENSING UNIT ONLY
ELECTRONIC
+12 POWER FOR
+12 (PURPLE) 6121

CONNECTION INFORMATION
MP85.5013
10FEB99
CONTROL BOX
ROOM EXTENSION SYSTEM
SYSTEM
CONTROL BOX
LEVELING
10 AMP
10AMP
CONTROL BOX
LEVELING
SYSTEM
EXTENSION
ROOM
CONTROL BOX
CONTROL BOX
ROOM
EXTENSION
MANIFOLD
ROOM
EXTENSION RETRACT SOLENOID
VALVE - (BLACK) 5100
EXTEND SOLENOID
VALVE - (YELLOW) 5000
HARNESS
EXTEND FUSE
RETRACT FUSE
NOTE: THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE
COLORS.
POWER - (RED) 6125
EXTEND - (YELLOW) 7501
RETRACT - (BLACK) 7502
TO ROOM EXTENSION
CONTROL SWITCH
HARNESS

02FEB99
MP85.5023
ELECTRICAL CONNECTION DIAGRAM
A
B
A
B
VIEW FROM PUMP END
ONE ROOM EXTENSION SYSTEM
ROOM EXTENSION HYDRAULIC
MANIFOLD
VIEW FROM PUMP END
EXTEND
RETRACT
B - (YELLOW) 5000
A - (WHITE) 6245
LEVELING SYSTEM
MANIFOLD
SOLENOID VALVE
SOLENOID VALVE
SEE POWER UNIT
HARNESS GROUNDING
INSTRUCTIONS
B - (BLACK) 5100
SEE CONTROL BOX
CONNECTION
INFORMATION
SYSTEM
ROOM EXTENSION
HWH ROOM EXTENSION
CONTROL SWITCH
ROOM EXTENSION
MANIFOLD HARNESS
A - (WHITE) 6245
DO NOT REVERSE
CONNECTORS
WIRE COLORS TO
A & B ON PACKARD
NOTE:
HARNESS
1213 11
2526 24
ROOM EXTENSION
PANEL (REAR VIEW)
OPERATOR’S
KEY
SWITCH
TERMINAL 13 - (BLACK) 7502
TERMINAL 12 - (YELLOW) 7501
1113 12
26 2524
DETAIL "A"
ROOM CONTROL
SWITCH (SEE
DETAIL "A")
12
11
13
25
24
26
+12 FROM CONTROL
BOX - (RED) 6125
TERMINAL
11
NOTE: THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE
COLORS.
6245