HWH 625 Series User manual

OPERATOR’S MANUAL
ML40392/MP04.2801
08MAR07
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
625 SERIES LEVELING SYSTEM
HWH COMPUTER-CONTROLLED
R
Straight-Acting Jacks
AP40391
R
Multiple Room Extensions
FOR TRAILERS
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
HWH COMPUTERIZED LEVELING
EXTEND
RETRACT
AUTO
STORE
LEVEL
AUTO
CAUTION!
BRAKE
TRAVEL
EMERGENCY
STOP MODE
PARK/
NOT IN
EXCESS
R
SLOPE
MANUAL
RETRACT
EXTEND
W
CORPORATION
HH
R
AND
SPACEMAKER ROOM EXTENSION SYSTEMS
R
No Jack Stop Rods

CAUTION !
READ THE ENTIRE OPERATOR’S MANUAL BEFORE OPERATING.
MOVE FORWARD OR BACKWARD WITHOUT WARNING CAUSING INJURY OR DEATH.
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE LEVELING SYSTEM IS IN USE.
CAUSING INJURY OR DEATH.
CHIPS, OIL LEAKS, ETC. FOLLOW ALL OTHER APPLICABLE SHOP SAFETY PRACTICES.
OPERATOR’S MANUAL
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
NEVER PLACE HANDS OR OTHER PARTS OF THE BODY NEAR HYDRAULIC LEAKS. OIL MAY PENETRATE SKIN
WEAR SAFETY GLASSES WHEN INSPECTING OR SERVICING THE SYSTEM TO PROTECT EYES FROM DIRT, METAL
MP14.0003
01MAR07
IMPORTANT: IF VEHICLE IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE
OPERATING LEVELING SYSTEM.
WHILE HITCHING OR UNHITCHING, AVOID AREAS WHERE BODY MAY BE CRUSHED BY SUDDEN DROPPING OR SLIDING
OF THE TRAILER.
DO NOT LIFT TOW VEHICLE WITH 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.

MP24.2850
13FEB07
"EMERGENCY STOP" BUTTON:
any leveling system operation.
"AUTO LEVEL" BUTTON:
"AUTO STORE" BUTTON:
four jacks at the same time. WARNING LIGHTS:
"EXCESS SLOPE" LIGHT:
the leveling system cannot level the vehicle.
"NOT IN PARK/BRAKE" LIGHT:
"TRAVEL MODE" LIGHT:
when the jacks are retracted and there are no red WARNING
lights on.
CONTROL FUNCTIONS
INDICATOR LIGHTS (CONTINUED)
CONTROL BUTTONS
Push this button to stop
Push this button to retract all
This indicator will light when
Not Applicable.
This indicator light will be on
EXTEND BUTTONS (UP ARROWS):
RETRACT BUTTONS (DOWN ARROWS):
LEVELING LIGHTS:
These buttons will
extend their respective jack pairs to lift the vehicle.
These buttons
will retract their respective jack pairs to lower the vehicle.
The four yellow indicating lights are
level sensing indicators. When a yellow light is on, it
indicates that its side, end, or corner of the vehicle is low.
No more than two lights should be on at the same time.Push this button any time to
The four red lights surrounding the
yellow level indicators are jacks down WARNING lights.
They are functional whenever the jacks are extended
start the automatic leveling function.
CONTROL IDENTIFICATION
625 SERIES LEVELING SYSTEM
COMPUTER-CONTROL
1/4 to 1/2 inch.
RETRACT
EXTEND
HWH COMPUTERIZED LEVELING
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
"EXCESS SLOPE"
Indicator light
"AUTO LEVEL"
AUTO LEVEL/STORE
CANCEL Button
"NOT IN PARK"
Indicator light
Indicator light
"TRAVEL MODE"
Indicator light
Indicator light
AUTO LEVEL
"AUTO STORE"
Button
STORE
Button
RAISE LEFT SIDE
Manual button
LOWER LEFT SIDE
Manual button
EMERGENCY
STORE
AUTO
STOP
AUTO
LEVEL
TRAVEL
BRAKE
MODE
CAUTION!
EXCESS
SLOPE
NOT IN
PARK/
R
LOWER FRONT
Manual button
RAISE FRONT
Manual button
JACK DOWN
Indicator light
RAISE RIGHT SIDE
Manual button
LOWER RIGHT SIDE
Manual button
LEVEL SENSING
Indicator light
(4) yellow
RAISE REAR
Manual button
LOWER REAR
Manual button
MANUAL
RETRACT
EXTEND (4) red
INDICATOR LIGHTS
AUTO LEVEL INDICATOR LIGHT: This light will flash
during the automatic leveling function.
STORE INDICATOR LIGHT: This light will flash during
the automatic store function.
When all four yellow LEVEL lights are out, the vehicle is
level.

CONTROL FUNCTIONS
CONTROL IDENTIFICATION
MP24.4560
05FEB07
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:
is OEM provided. Refer to OEM operator instructions.
This switch (not shown)ROOM SELECTOR SWITCH:
OEM PROVIDED ROOM SELECTOR SWITCH (IF APPLICABLE)

OPERATING PROCEDURES
MP34.0201
13FEB07
GENERAL INSTRUCTIONS
PREPARATION FOR TRAVEL
If parking on soft ground or asphalt paving, wood blocks or
pads must be placed under the jacks.
Press the "EMERGENCY STOP" button 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.
Before traveling, the red jack warning lights must be off
and the "TRAVEL MODE" 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 MODE" light is not lit, the system
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.
TO CHECK THAT ALL JACKS ARE FULLY RETRACTED
LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY
HAZARD. DO NOT RELY SOLELY UPON WARNING
AND OR THE VEHICLE AND CREATE A DRIVING
EXTENDED CAN CAUSE SEVER DAMAGE TO THE JACKS
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:
The leveling system should be cycled once a month or
whenever the vehicle is used, to keep the system in
operating condition.
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 should be fully retracted before traveling.
DO NOT MOVE THE VEHICLE IF ONE
OR MORE JACKS ARE EXTENDED TO THE GROUND.
CAUTION:
needs to be serviced. INTO THE STORE/TRAVEL POSITION.
Any time the "AUTO LEVEL" button has been pushed,
push the "AUTO STORE" button before traveling.
ROOM EXTENSION PROCEDURES
the vehicle before extending the room.
IMPORTANT: It is recommended to level and stabilize
IMPORTANT: Extending or retracting any leveling jacks
when the room is extended is not recommended.
IMPORTANT: If the vehicle is equipped with a room
extension read this section carefully.
when the vehicle is supported by the leveling system.
IMPORTANT: Do not use a room extension support
Refer to the vehicle owner’s manual for proper operation of
room extensions.

OPERATING PROCEDURES
SET UP AND AUTOMATIC LEVELING PROCEDURE
1. Trailer must be unhitched from the tow vehicle before level-
ing. The HWH front jacks may be used to lift the trailer for
unhitching. If auxiliary jacks are used to unhitch the trailer,
If parking on soft ground or asphalt paving, a wood block or
for unhitching.
pad should be placed under each jack.
will result if raise arrows are operated for an extended
period of time.
2. Lower the front of the trailer until the front yellow level
indicator light comes on. This is done by pushing the front
RETRACT button (DOWN ARROW). The red jacks down
warning lights will light when the jacks are extended
NOTE: Refer to the trailer manufacturer owner’s manual
IMPORTANT: Overheating and excessive current drain
08MAR07
MP34.2706
extend the HWH front jacks to the ground and retract the
auxiliary jacks before the leveling system is used for leveling.
1/4 to 1/2 inch.
NOTE: The front yellow LEVEL light must be on before
automatic leveling will function.
light will start to flash.
3. Press the "AUTO LEVEL" button. The "AUTO LEVEL"
The system will automatically extend the jacks to level the
vehicle and then extend any remaining jacks for stabilizing.
After the system has finished leveling and stabilizing, it will
automatically shut off.
EXCESS SLOPE SITUATION: In the event the jacks are
unable to level the coach, the "EXCESS SLOPE" light will
come on. Excess slope is two jacks fully extended without
turning the yellow level light out. The system will not stabilize
the vehicle if the "EXCESS SLOPE" light comes on. One or
more jacks may be extended. The system will shut off
leaving the "EXCESS SLOPE" light on. The "EXCESS
SLOPE" light will remain on if there is power to the control
box, until the jacks have been fully retracted turning the red
warning lights out. Refer to the JACK RETRACTION section.
Move the vehicle to a more level position or level the vehicle
as close as possible according to the MANUAL LEVELING
section.
NOTE: The manual buttons (UP and DOWN arrows) on
the right side of the panel will function at any time. The
front UP arrow (Raise Front) manual button will extend
the front jacks. DO NOT push the "AUTO LEVEL" button
if the manual buttons are to be used.

OPERATING PROCEDURES
MP34.2803
12JUL07
CAUTION:
IMPORTANT: DO NOT interrupt power to the leveling
PREPARATION FOR TRAVEL
THE OPERATOR MUST BE SURE THAT
THERE ARE NO OBJECTS UNDER THE VEHICLE AND THAT
ALL PEOPLE ARE CLEAR OF THE VEHICLE.
system while the AUTO STORE indicator light is on.
DO NOT push the "EMERGENCY STOP" button. The
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 LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY TO
CHECK THAT ALL JACKS ARE FULLY RETRACTED INTO
THE STORE/TRAVEL POSITION.
system must be allowed to completely finish the
1. Hitch the trailer to the tow vehicle using the procedure
supplied by the trailer manufacturer. The front Retract
NOTE: Pushing a room control switch to extend or
retract will interrupt the STORE mode. When the
switch is released, the leveling system will return
(Down Arrow) button should be used to hitch the trailer
to the tow vehicle.
do not go out, the system will not shut off. Push the
"EMERGENCY STOP" button to turn the system off.
NOTE: If any one of the four red WARNING lights
remains on, the system will try to store the jacks for 20
minutes from the time the "AUTO STORE" button is
pushed, then turn off.
the four red warning lights go out. If any red warning light
panel will automatically turn off 6 minutes after the last of
the "AUTO STORE" button. All 4 jacks will retract. The
and the weight of the trailer is off of the front jacks, push
2. After the trailer is securely hitched to the tow vehicle,
to the STORE mode.
VEHICLE OR SECURELY SUPPORTED BY THE
BUTTON IF THE TRAILER IS HITCHED TO A TOW
EXISTING LANDING GEAR.
CAUTION:ONLY USE THE "AUTO STORE"
STORE mode.
is no weight on the front jacks.
The "AUTO STORE" button will not function until there
button until the trailer is hitched to the tow vehicle.
IMPORTANT: DO NOT push the "AUTO STORE"

OPERATING PROCEDURES
MANUAL LEVELING
1. Trailer must be unhitched from the tow vehicle before level-
ing. The HWH front jacks may be used to lift the trailer for
unhitching. If auxiliary jacks are used to unhitch the trailer,
If parking on soft ground or asphalt paving, a wood block or
for unhitching.
pad should be placed under each jack.
will result if raise arrows are operated for an extended
period of time.
2. Lower the front of the trailer until the front yellow level
indicator lights come on. This is done by pushing the front
RETRACT button (DOWN ARROW). The red jacks down
3. A lit yellow LEVEL light indicates that the side, end or corner
of the trailer is low. Pushing the up arrow for corresponding yellow
level lights will extend that jack or jack pair to level the vehicle.
Extend jacks as needed to put out all the yellow lights. Always
give a side yellow level light priority when leveling the trailer.
If the ground is too uneven, the jacks may not have engough
stroke to level the trailer. The trailer may have to be moved.
4. After the trailer is level, the jacks not used for leveling may
be extended until they touch the ground. This provides addi-
warning lights will light when the jacks are extended
tional stability against wind and activity in the trailer. Jacks
NOTE: Refer to the trailer manufacturer owner’s manual
IMPORTANT: Overheating and excessive current drain
09MAR07
MP34.3011
extend the HWH front jacks to the ground and retract the
auxiliary jacks before the leveling system is used for leveling.
1/4 to 1/2 inch.
NOTE: When a side arrow (UP or DOWN) is pushed only
the rear jack on that side will extend or retract.
used to stabilize the trailer should lift the trailer about 3/4 inch.
NOTE: The leveling system should be cycled at least
once a month or whenever the trailer is used. To keep
the system in operating condition.

OPERATING PROCEDURES
MP34.3303
07MAR07
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. If equipped with
CAUTION: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,
9. The system should now be repaired before using again.
3. Using the diagrams below identify the style and location
5. Repeat the process by identifying then opening the two
rear control 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 front jack control 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 correct valves.
Slowly turn the manual valve releases counter clockwise
until the jacks start to retract. Hitch the trailer to the tow
1 full turn
4 and 1/2 turns
HWH Corporation customer service.
FOR TRAILERS WITHOUT LOCK VALVE
RR RF LR
LF
VALVE ARRANGEMENT
TRAILER
RIGHT
REAR
FRONT
RIGHT
LEFT
FRONT REAR
LEFT
landing gear, lower the landing gear to support the trailer
while manually retracting the jacks.
vehicle during this operation if the vehicle is not equipped
8. Retract all landing gear before traveling.
with an alternate landing gear.

OPERATING PROCEDURES
MP34.3304
07MAR07
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. If equipped with
CAUTION: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,
9. The system should now be repaired before using again.
3. Using the diagrams below identify the style and location
5. Repeat the process by identifying then opening the two
front control valves. Hitch the trailer to the tow vehicle
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 rear jack control 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 rear jacks by opening the correct 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.
FOR TRAILERS WITH LOCK VALVE
RR LR
RF
LF
LOCK
VALVE ARRANGEMENT
TRAILER
RIGHT
REAR
REAR
LEFT
LEFT
FRONT FRONT
RIGHT
landing gear, lower the landing gear to support the trailer
while manually retracting the jacks.
during this operation if the trailer is not equipped with an
8. Retract all landing gear before traveling.
LARGE STYLE WITH T-HANDLE
VALVE RELEASE
alternate landing gear.