HWH 625 Series User manual

OPERATOR’S MANUAL
ML33373/MP05.600K
12MAY04
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
AP33372
W
CORPORATION
HH
R
R
Pilot Operated Suspension Air Dump
One - Dual Cylinder "In Floor" Slide (With Synchronizing Cylinder)
Two - Single Cylinder "In Floor" Slides
One - Single Cylinder Bed Slide
One - Single Cylinder Generator Slide
AND
SPACEMAKER ROOM EXTENSION SYSTEMS
R
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
TRAVEL
CAUTION!
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
OFF MODE
BRAKE
HWH COMPUTERIZED LEVELING
SLOPE
EXCESS
NOT IN
STORE DUMP
HYD LEVEL
R
STEP
PARK/
LUBE

CAUTION !
READ THE ENTIRE OPERATOR MANUAL BEFORE OPERATING.
BLOCK FRAME AND TIRES SECURELY BEFORE CRAWLING UNDER VEHICLE. DO NOT USE LEVELING JACKS OR
AIR SUSPENSION TO SUPPORT VEHICLE WHILE UNDER VEHICLE OR CHANGING TIRES. VEHICLE MAY DROP
AND/OR MOVE FORWARD OR BACKWARD WITHOUT WARNING CAUSING INJURY OR DEATH.
WEAR SAFETY GLASSES WHEN INSPECTING OR SERVICING THE SYSTEM TO PROTECT EYES FROM DIRT, METAL
CHIPS, OIL LEAKS, ETC. FOLLOW ALL OTHER APPLICABLE SHOP SAFETY PRACTICES.
OPERATOR’S MANUAL
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE DUMPING AIR FROM THE VEHICLE’S SUSPENSION.
DO NOT MOVE THE VEHICLE IF THE VEHICLE IS NOT AT THE PROPER RIDE HEIGHT. CONTACT MANUFACTURER
IMPORTANT: IF COACH IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE
OPERATING LEVELING SYSTEM.
HOW TO OBTAIN WARRANTY SERVICE
THIS IS NOT TO BE INTERPRETED AS A STATEMENT OF WARRANTY
HWH CORPORATION strives to maintain the highest level of
customer satisfaction. Therefore, if you discover a defect or
problem, please do the following:
[phone] OR [phone]. Give your name and
coach was purchased, or the date of system installation,
Notify the dealership where you purchased the
vehicle or had the leveling system installed. Dealership
management people are in the best position to resolve
the problem quickly. If the dealer has difficulty solving
the problem, he should immediately contact the Customer
Service Department, at HWH CORPORATION.
If your dealer cannot or will not solve the problem,
notify the Customer Service Department:
HWH CORPORATION 2096 Moscow Rd. Moscow IA. 52760
address, coach manufacturer and model year, date the
SECOND:
FIRST:
authorization of an independent service facility, to be
defective part, either by appointment at the factory or by the
CORPORATION will authorize repair or replacement of the
determine whether or not your claim is valid. If it is, HWH
HWH CORPORATION personnel will contact you to
during business hours (8:00 a.m. till 5:00 p.m. c.s.t.).
description of the problem, and where you can be reached
determined by HWH CORPORATION. All warranty repairs
must be performed by an independent service facility
authorized by HWH CORPORATION, or at the
HWH CORPORATION factory, unless prior written approval
has been obtained from proper HWH CORPORATION
personnel.
08FEB06
MP15.9800
TECHNICAL SERVICE FOR MOVING THE VEHICLE WHEN NOT AT THE PROPER RIDE HEIGHT.
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE OPERATING LEVELING SYSTEM OR ROOM EXTENSIONS.

MP25.3043
12JUN03
DUMP
LEVEL
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
ON LIGHT
"STORE" BUTTON
"DUMP" BUTTON
"OFF" BUTTON
"TRAVEL MODE" LIGHT
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
BUTTON LEFT SIDE RETRACT BUTTON
"OFF" BUTTON:
operation.
"LEVEL" (HYD) BUTTON:
"STORE" BUTTON:
"STORE" button. This button is used to automatically retract
the jacks.
"DUMP" BUTTON:
from the vehicle suspension.
WARNING LIGHTS:
"EXCESS SLOPE" LIGHT:
the leveling system cannot level the vehicle.
"NOT IN PARK/BRAKE" LIGHT:
when the hand/auto brake is not set and the "LEVEL"
"TRAVEL MODE" LIGHT:
when the ignition is on, when the jacks are retracted and
there are no red WARNING lights on.
MASTER "JACKS DOWN" WARNING LIGHT:
light mounted in the dash separate from the touch panel.
and the ignition is "ON".
BUZZER:
CONTROL FUNCTIONS
INDICATOR LIGHTSCONTROL BUTTONS
Push the "OFF" button to stop hydraulic
The store indicator light is above the
This is a manual button for dumping air This indicator will light when
This indicator will light
This indicator light will be on
This is a
This is a jacks down warning. It will sound if the
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.This is the on button and
The four red lights surrounding the
yellow level indicators are jacks down WARNING lights.
They are functional only when the ignition is in the "ON"
extended 1/4 to 1/2 inch.
automatic operation button. The ON indicator light is above
master "JACKS DOWN" warning light is on.
CONTROL IDENTIFICATION
625 SERIES LEVELING SYSTEM
COMPUTER-CONTROL
MODE
BRAKE
or "ACC" position, the system is on, and the jacks are
It will be on when any one or more jacks are extended
HYD
"LEVEL" (HYD) BUTTON
the "HYD" button.
button is being pushed.

CONTROL FUNCTIONS
CONTROL IDENTIFICATION
MP25.3060
02MAY03
ROOM CONTROL
SWITCH
KEY SWITCH
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.
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. Releasing
the ROOM CONTROL SWITCH will halt the operation of the
room.
ROOM OPERATOR’S PANEL
KEY
KEY SWITCH:
The KEY SWITCH controls power to the ROOM
ROOM CONTROL SWITCH: The ROOM CONTROL SWITCH
ROOMS WITH TRAVEL CLAMPS
H
CORPORATION
HW
R
WHEN RETRACTING THE ROOM RELEASE
SWITCH WHEN BOTH LIGHTS COME ON
ROOM EXTEND
ROOM RETRACT
HYDRAULIC ROOM EXTENSION
ON
OFF
USING. KEEP PEOPLE AND OBSTRUCTIONS
UNDERSTAND OPERATOR’S MANUAL BEFORE
CLEAR OF ROOM WHEN OPERATING.
CAUTION!
TRAVEL CLAMPS ENGAGED
INDICATOR LIGHT INDICATOR LIGHT
TRAVEL CLAMPS ENGAGED
TRAVEL CLAMPS ENABLED INDICATOR LIGHT: These
lights only come on if the Room Control Switch is being
pushed to ROOM RETRACT. The ignition must be on and
the room panel Key Switch must be on. These lights will
come on when the room is fully retracted and the Travel
Clamps are fully extended.

CONTROL FUNCTIONS
CONTROL IDENTIFICATION
MP25.3070
02MAY03
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
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. Releasing
the ROOM CONTROL SWITCH will halt the operation of the
room.
ROOM OPERATOR’S PANEL
KEY
ROOM CONTROL SWITCH:
The ROOM CONTROL SWITCH
ROOMS WITHOUT TRAVEL CLAMPS
removed. When the KEY SWITCH is in the "OFF" position
the room cannot be operated, and the key can be removed.
position the room can be operated and the key cannot be
The KEY SWITCH controls power to the ROOM
CONTROL SWITCH. When the KEY SWITCH is in the "ON"
KEY SWITCH:

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

OPERATING PROCEDURES
MP35.3811
19NOV07
GENERAL INSTRUCTIONS
PREPARATION FOR TRAVEL
If parking on soft ground or asphalt paving, a wood block or
pad should be placed under each jack.
Press the "OFF" button or 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 hand / auto brake is not set when the "HYD" button
is pressed, the "NOT IN PARK/BRAKE" light will come on.
When the "HYD" button is released the "NOT IN PARK/
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:
Maintain adequate clearance in all directions for vehicle, room
extensions, awnings, doors, steps, etc. Vehicle may move in
any direction due to jacks extending or retracting, settling of
the jacks or the vehicle, equipment malfunction, etc..
Any room extension or generator slide should be fully
DO NOT MOVE THE VEHICLE IF ONE
OR MORE JACKS ARE EXTENDED TO THE GROUND.
CAUTION:
needs to be serviced.
INTO THE STORE/TRAVEL POSITION AND THE
VEHICLE IS AT THE PROPER RIDE HEIGHT FOR
BRAKE" light will go out. The panel will NOT turn on.
TRAVELING. CONTACT MANUFACTURER TECHNICAL
retracted before traveling. IMPORTANT: Any time the "HYD" button has been
pushed, push the "STORE" button before traveling.
SERVICE BEFORE MOVING A VEHICLE THAT IS NOT
AT PROPER TRAVEL HEIGHT.

MP35.3815
01JUL05
AUTOMATIC HYDRAULIC LEVELING
CAUTION:
IMPORTANT: Pushing the "OFF" button or turning the
1. Place transmission in the recommended position for
parking vehicle and set parking brake. Turn the coach
engine off. Turn the ignition to the "ACCESSORY" position.
2. Press the "LEVEL" button to enter the hydraulic
operation mode. The ON light will glow steady.
3. At this time, the operator may want to check the jacks
and place a pad under each jack if the ground will not
4. Press the "LEVEL" button a second time.
The ON light will start to flash.
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, and has
completed the air dump cycle, it will automatically shut off.
5. Turn the ignition switch to the "OFF" position.
JACK RETRACTION
THE OPERATOR MUST BE SURE THAT
THERE ARE NO OBJECTS UNDER THE VEHICLE AND THAT
ALL PEOPLE ARE CLEAR OF THE VEHICLE.
ignition key will stop the STORE procedure. Any time
the STORE procedure is stopped before all 4 red Warning
4. 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
Lights go out, the jacks should be completely retracted
3. The vehicle can be moved as soon as the red warning
lights are out, the jacks are in the STORE/TRAVEL position,
the green "TRAVEL" light is on, and the suspension air bags
are inflated to the vehicles proper ride height.
THE STORE/TRAVEL POSITION AND THE VEHICLE IS AT
THE PROPER RIDE HEIGHT.
NOTE: After pushing the "LEVEL" button a second time,
the system will begin to dump air from the vehicle
1. Start the engine. Store the jacks immediately.
OPERATING PROCEDURES
625 SERIES LEVELING SYSTEM
support the vehicle.
leveling process will begin.
suspension. After approximately 25 seconds, the
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 extending 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 not be extended. The system will shut off
leaving the "EXCESS SLOPE" light on. The "EXCESS
SLOPE" light will remain on if the ignition is in the "ON" or
"ACC" position, until the jacks have been fully retracted
turning the red warning lights out. Push the "STORE" button
to retract the jacks. Move the vehicle to a more level position
or level the vehicle as close as possible according to the
MANUAL HYDRAULIC OPERATION section.
NOTE: When traveling thermal expansion may cause
a jack to extend slightly. When the "STORE" button
has been used to retract the jacks, the system will
automatically retract any jack that extends due to
thermal expansion.
by pushing the "STORE" button before traveling.
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.
2. Press the "STORE" button. The store indicator light will
flash. The vehicle suspension will start to return to ride
height. The front jacks will retract for 2 seconds before the
rear jacks will begin to retract. As each jack retracts, its red
WARNING light will go out. The system will automatically
shut down six minutes after the four individual red
"WARNING" lights are out. If any one red "WARNING light
does not go out, the system will continue to store for thirty
minutes, then shut down regardless of the "WARNING"
lights condition.
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

OPERATING PROCEDURES
MP35.3840
03SEP09
IMPORTANT: Do not continue to push an EXTEND
MANUAL HYDRAULIC OPERATION
1. Place transmission in the recommended position for parking
2. Press the "HYD" 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.
5. The vehicle may be leveled using the manual EXTEND
(UP ARROW) buttons on the right half of the panel. If a yellow
LEVEL SENSING light is on, that side or end of the vehicle is
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
button for more than ten (10) seconds after that pair of
6. When leveling is completed, push the "OFF" button on the
touch panel and turn the ignition switch to the "OFF" position.
against wind and activity in the vehicle. Jacks used to
the vehicle, and set the parking brake. Turn the ignition to the
"ACCESSORY" position.
jacks are fully extended.4. Push the "DUMP" button. Wait until all of the air is
exhausted from the vehicles suspension system.
when manual operation of the leveling system is used.
IMPORTANT: Push the "STORE" button before traveling
stabilize the vehicle after leveling is complete should lift the
vehicle slightly after touching the ground.
low. It is best to level the vehicle side to side first, if needed,
before front to rear.

OPERATING PROCEDURES
MP35.384N
01MAR10
MANUAL JACK RETRACTION
been opened far enough to allow the jacks to retract.
the T-Handle will turn harder. Make sure the valves have
will turn several turns easily. As the valve starts to open,
Large style with T-Handle valve release:
power unit. The upper most manifold should control
NOTE: Multiple manifolds may be present on the
retract the jacks.
if the STORE feature on the HWH control panel will not
Use the manual valve release for retracting the jacks only
DO NOT CRAWL UNDER THE VEHICLE, KEEP A SAFE
DISTANCE IN FRONT AND REAR OF THE VEHICLE.
THE VEHICLE MAY DROP AND/OR MOVE FORWARD
OR BACKWARD WITHOUT WARNING AS THE VALVE
RELEASE IS OPERATED.
1. Locate your power unit-manifold assembly.
2. Allow clearance for the vehicle to lower.
WARNING:KEEP AWAY FROM THE WHEELS,
point as internal damage may occur to the solenoid.
incorporated into the Breather Cap. Before using read
NOTE: As of APRIL 2002 a 1/4" Nut Driver has been
and understand the last page of this manual.
6. Check that all jacks are now retracted. If yes, continue.
7. Close the valves by turning each valve release clockwise.
DO NOT tighten the manual valve release past this
IMPORTANT: Once the manual valve release is snug,
8. The system should now be repaired before using again.
3. Using the diagram below identify the style
5. Repeat the process by identifying then opening
the two outer valves, if applicable.
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.
The T-Handle
turn the
jack functions. (Valve styles and arrangements will vary)
POWER UNIT-MANIFOLD ASSEMBLY
MANIFOLD
of your two center valves.
If no, notify the dealership where you purchased the vehicle
or had the leveling system installed or contact
(The diagram below represents a typical Power Unit-
MANUAL JACK RETRACTION
extensions are fully retracted prior to performing
IMPORTANT: HWH recommends that all HWH room
manual jack retraction procedures.
Manifold Assembly it may not be an exact match to yours). 4. Retract the front jacks by opening the two center valves. Slowly turn the manual valve releases counter clockwise
until the jacks start to retract.
4 and 1/2 turns
HWH Corporation customer service.
valve. Replace the protective plastic plug.
Turning the nut more could damage the
release nut more than
The 1/4" Valve
removed to gain access. Open valve 1-1/2 to 2 full turns.
release nut is located under a plastic plug that must be
turn the 1/4" valve
Large style with Valve Release Nut:
2 full turns.
DO NOT
MP35.601G

OPERATING PROCEDURES
ROOM EXTEND PROCEDURE FOR ROOMS WITH TRAVEL CLAMPS
CAUTION:
NOTE: It is recommended to complete the Leveling
Procedure before operating room extensions. It is
2. Follow the LEVELING AND STABILIZING PROCEDURE.
the room remove it before extending the room.
CAUTION:
extend the room.
5. To extend the room, press and hold the
ROOM CONTROL SWITCH in the "EXTEND" position
until the room is fully extended.
halt the operation of the room.
6. Turn the room panel Key Switch to the "OFF" position.
7. Turn off the ignition switch.
OPERATING A ROOM WITH ANY
ROOM LOCKING, CLAMPING OR MANUAL RETRACTING
DEVICES ATTACHED OR ENGAGED CAN CAUSE
PERSONAL INJURY AND VEHICLE DAMAGE. IT IS THE
OPERATOR’S RESPONSIBILITY TO ENSURE THAT
ALL ROOM LOCKING, CLAMPING OR MANUAL
RETRACTING DEVICES ARE DETACHED OR
KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM WHEN OPERATING.
3. Turn the ignition switch to ACCESSORY.
IMPORTANT: Do not use a room extension support
when the vehicle is supported by the leveling system.
NOTE: If the MANUAL RETRACT WINCH is attached to
NOTE: Make sure there is adequate clearance to fully NOTE: Releasing the ROOM CONTROL SWITCH will
4. Turn the room control panel KEY SWITCH to
the "ON" position.
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.
1. The park brake must be set. The room will not
operate if the park brake is not set.
MP35.3850
23JUL03
IMPORTANT: The room will not start to move until the
Travel Clamps are retracted. This will take approximately
15 to 20 seconds after pushing the control switch to
"EXTEND". Do not try to manually extend the room if
the Travel Clamps will not retract.
DISENGAGED BEFORE OPERATING THE ROOM.
recommended to retract room extensions before
retracting jacks.

OPERATING PROCEDURES
ROOM RETRACT PROCEDURE FOR ROOMS WITH TRAVEL CLAMPS
2. Turn the ignition switch to ACCESSORY.
3. Turn the room control panel KEY SWITCH
4. To retract the room press and hold the
ROOM CONTROL SWITCH in the "RETRACT" position
until the room is fully retracted and both Travel Clamps
halt the operation of the room.
5. Turn the room panel KEY SWITCH to the "OFF" position.
6. Turn the ignition switch off.
IMPORTANT: Room-locking devices should be locked
while traveling.
CAUTION:
CLEAR OF ROOM WHEN OPERATING.
KEEP PEOPLE AND OBSTRUCTIONS
7. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
NOTE: Releasing the ROOM CONTROL SWITCH will
1-800-321-3494.
contact HWH Customer Service for assistance
force the room. DO NOT reverse direction of the room,
release the room control switch immediately. DO NOT
retract the room until the room has been fully extended.
direction of the room has been reversed, DO NOT
be reversed, but watch for binding of the room. If the
retracted. If necessary, the direction of the room may
reverse direction of the room until the room is fully
IMPORTANT: If either side of the room stops moving,
NOTE: During normal operation of the room, do not
MP35.3860
23JUL03
1. The park brake must be set. The room will not operate
if the park brake is not set.
to the "ON" position.
Engaged light come on.
IMPORTANT: When the room is fully retracted, a room
in limit switch will allow the Travel Clamps to extend.
The hydraulic pump will run for approximately 5 seconds
after the room is fully retracted. It will take the Travel
Clamps approximately 20 seconds to extend after the
room is fully retracted. When the Travel Clamps are fully
extended, the 2 Travel Clamps Engaged lights will come
on. When both Travel Clamps Engaged lights are on, the
room control switch should be released. If the Travel
Clamps Engaged lights do not come on, DO NOT hold
the room control switch to RETRACT for longer than
40 seconds after the room extension is fully retracted.
NOTE: It is recommended to retract room extensions
before retracting jacks.

OPERATING PROCEDURES
ROOM EXTEND PROCEDURE FOR ROOMS WITHOUT TRAVEL CLAMPS
2. Follow the LEVELING AND STABILIZING PROCEDURE.
3. Unlock all room-locking devices.
the room remove it before extending the room.
CAUTION:
extend the room.
6. To extend the room, press and hold the
ROOM CONTROL SWITCH in the "EXTEND" position
until the room is fully extended.
halt the operation of the room.
7. Turn the room control panel KEY SWITCH to
8. Turn off the ignition switch.
KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM WHEN OPERATING.
4. Turn the ignition switch to ACCESSORY. IMPORTANT: Do not use a room extension support
when the vehicle is supported by the leveling system.
NOTE: If the MANUAL RETRACT WINCH is attached to
NOTE: Make sure there is adequate clearance to fully
NOTE: Releasing the ROOM CONTROL SWITCH will
5. Turn the room control panel KEY SWITCH to
the "ON" position.
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.
1. The park brake must be set. The room will not
operate if the park brake is not set.
MP35.3870
23JUL03
the "OFF" position.
recommended to retract room extensions before
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
Procedure before operating room extensions. It is
NOTE: It is recommended to complete the Leveling
retracting jacks.
CAUTION: OPERATING A ROOM WITH ANY

OPERATING PROCEDURES
ROOM RETRACT PROCEDURE FOR ROOMS WITHOUT TRAVEL CLAMPS
NOTE: It is recommended to retract room extensions
before retracting jacks.
2. Turn the ignition switch to ACCESSORY.
3. Turn the room control panel KEY SWITCH to
4. To retract the room press and hold the
ROOM CONTROL SWITCH in the "RETRACT" position
until the room is fully retracted.
halt the operation of the room.
5. Turn the room contol panel KEY SWITCH to
6. Turn the ignition switch off.
IMPORTANT: Room-locking devices should be locked
while traveling.
CAUTION:
CLEAR OF ROOM WHEN OPERATING.
KEEP PEOPLE AND OBSTRUCTIONS
7. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
NOTE: Releasing the ROOM CONTROL SWITCH will
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:
MP35.3880
23JUL03
1. The park brake must be set. The room will not operate
if the park brake is not set.
the "ON" position. the "OFF" position.

OPERATING PROCEDURES
MP35.4724
28JUL98
GENERATOR SLIDE EXTEND PROCEDURE
CAUTION:
CLEAR OF SLIDE WHEN OPERATING.
NOTE: Make sure there is adequate clearance to fully extend
the slide.
3. To extend the slide, press and hold the GENERATOR SLIDE
CONTROL SWITCH in the "EXTEND" position. When the
slide is fully extended, release the GENERATOR SLIDE CON-
TROL SWITCH.
IMPORTANT: Do not hold the GENERATOR SLIDE CONTROL
SWITCH in the "EXTEND" position for more than ten seconds
after the slide is fully extended or stops moving.
NOTE: Releasing the GENERATOR SLIDE CONTROL SWITCH
will halt the operation of the slide.
GENERATOR SLIDE RETRACT PROCEDURE
3. To retract the slide, press and hold the GENERATOR SLIDE
CONTROL SWITCH in the "RETRACT" position. When the
slide is fully retracted, release the GENERATOR SLIDE CON-
TROL SWITCH.
after the slide is fully retracted or stops moving.
SWITCH in the "RETRACT" position for more than ten seconds
Do not hold the GENERATOR SLIDE CONTROL IMPORTANT:
Releasing the GENERATOR SLIDE CONTROL SWITCH
will halt the operation of the slide.
NOTE:
KEEP PEOPLE AND OBSTRUCTIONS
2. THE PARK BRAKE MUST BE SET FOR THE SLIDE TO
OPERATE.
1. Turn the ignition key on.
IN THE EVENT OF FAILURE OF THE GENERATOR SLIDE
TO RETRACT, CONTACT HWH CORPORATION CUSTOM-
ER SERVICE AT 1-319-724-3396 OR 1-800-321-3494 FOR
ASSISTANCE.
2. THE PARK BRAKE MUST BE SET FOR THE SLIDE TO
OPERATE.
1. Turn the ignition key on.

MP35.952D
01MAY02
MANUAL ROOM AND GENERATOR SLIDE RETRACT PROCEDURE
OVERVIEW
1. Retract jacks following the LEVELING SYSTEM
RETRACT PROCEDURE.
2. Locate the HYDRAULIC PUMP/MANIFOLD unit.
VALVES are opened and internal pressure is released.
WINCH
WINCH STRAP
WINCH HANDLE
RATCHET LEVER
HOOK
MANUAL RETRACT WINCH
5. Slowly winch the room in by turning the WINCH HANDLE
clockwise. The RATCHET LEVER should produce a loud, sharp,
clicking noise.
in the hydraulic fluid and make winching more difficult.
CAUTION:
ON
OFF
HYDRAULIC PUMP/MANIFOLD
NOTE: The room may move slightly as the SOLENOID
NOTE :
NOTE: Winching the room in quickly will raise pressure
IMPORTANT:
6. When the room is fully retracted, engage the room locking
devices. Leave the retract winch engaged and the solenoid
CAUTION: THE ROOM EXTENSION SOLENOID
VALVE RELEASE NUTS MUST BE IN THE OPEN
POSITION WHEN THE MANUAL RETRACT WINCH IS
7. The system should be repaired before using again.
CAUTION: THE MANUAL RETRACT WINCH IS
OPERATE THE MANUAL RETRACT
WINCH BY HAND POWER ONLY. IF THE WINCH
CANNOT BE CRANKED EASILY WITH ONE HAND IT IS
PROBABLY OVERLOADED. IF WINCHING BECOMES
TOO DIFFICULT STOP AND CHECK FOR OBSTRUCTIONS
OR RESTRICTIONS ON THE ROOM AND ROOM
LEVELING SYSTEM MANIFOLD NOT SHOWN
SOLENOID VALVES
VALVE
RELEASE
NUT NUT
VALVE
RELEASE
3. Open the Solenoid Valves by slowly turning the valve
release nuts counter clockwise using the 1/4" nut driver
Only open the valves enough to retract NOTE: After repairs are made, when
closing the VALVE RELEASE NUTS, do
When manually retracting the room, make sure
the jacks are retracted before retracting the room.
EQUIPPED FOR MANUALLY RETRACTING THE ROOM
ONLY. IT IS NOT TO BE USED FOR LIFTING OR ANY
OTHER APPLICATION. HIGH FORCES ARE CREATED
WHEN USING A WINCH, CREATING POTENTIAL SAFETY
HAZARDS. FAILURE TO FOLLOW ALL CAUTIONS AND
INSTRUCTIONS MAY CAUSE FAILURE OF THE MANUAL
RETRACT WINCH OR CONNECTIONS RESULTING IN
DAMAGE OR PERSONAL INJURY. MAINTAIN FIRM GRIP
ON THE WINCH HANDLE AT ALL TIMES. NEVER
RELEASE THE HANDLE WHEN RATCHET LEVER IS IN
THE OFF POSITION AND THE WINCH IS LOADED. THE
WINCH HANDLE COULD SPIN VIOLENTLY AND CAUSE
PERSONAL INJURY. CHECK THE WINCH AND STRAPS
FOR DAMAGE OR WEAR, AND CHECK FOR PROPER
RATCHET OPERATION ON EACH USE OF THE WINCH.
DO NOT USE IF DAMAGED OR WORN.
supplied.
the room. DO NOT turn the release nuts more than
4 and 1/2 turns. Turning the nuts more could damage
the valves.
with the Operators Manual. As of APRIL 2002 the
NOTE: Prior to APRIL 2002 a 1/4" Nut Driver was sent
Cap. See the back page of this manual for further info.
1/4" Nut Driver has been incorporated into the Breather
4. Locate the MANUAL RETRACT WINCH and connect
it to the room according to the vehicle manufacturer’s
instructions. To extend the WINCH STRAP firmly grasp
WINCH HANDLE, place RATCHET LEVER in its OFF
position, and slowly rotate the WINCH HANDLE
counter clockwise, keeping a firm grip on the handle. When
enough WINCH STRAP is extended, place the RATCHET
LEVER in its ON position and slowly rotate the WINCH
HANDLE clockwise until the RATCHET LEVER locks.
EXTENSION MECHANISM.
valves open.
ENGAGED.
(WITH SOLENOID VALVES WITH VALVE RELEASE NUTS)
(USE ONLY WHEN THE ROOM WILL NOT RETRACT WITH THE ROOM CONTROL SWITCH)
not over tighten the nuts.
IMPORTANT: If the vehicle is not equipped with a winch,
DO NOT use other pulling devices to retract the room.
Follow steps 2 and 3 and try pushing the room in.
Contact the vehicle manufacturer or HWH Customer
Service at 1-800-321-3494 or 563-724-3396 for assistance.
The room can be retracted manually if a hydraulic or electric
failure prevents the room from being retracted using the
CONTROL SWITCH. For normal retract sequence see the
ROOM SLIDE RETRACT PROCEDURES. Refer to the
vehicle manufacturer for storage location of the winch
and information for connecting the winch to the room.

MAINTENANCE
MP45.3002
19NOV07
OIL LEVEL
The oil level should be checked when the vehicle is first
purchased and then once every two years. More often if
there is an oil leak in the system.
All four jacks should be completely retracted before
checking the oil level.
The oil reservoir is part of the pump/manifold assembly.
top of the reservoir. Most breather caps have a dipstick.
NOTE: Overfilling the tank can cause leakage of oil
through the breather cap.
ELECTRICAL SYSTEM
The batteries should be in good condition and fully charged.
Weak batteries can cause erratic operation. Battery cable
terminals and battery posts and connections should be kept
All electrical connections, especially ground connections,
should be clean, tight, free from corrosion and protected
LEVELING JACKS
There are very few user serviceable parts on the leveling
jacks. The jacks require very little maintenance. If the jacks
VISUAL INSPECTION
Periodically inspect the leveling system for oil leaks and
damaged or missing parts, such as pivot bolts or springs.
Check the hydraulic lines and wiring for damage and wear.
Check that the jacks do not interfere with any parts of the
vehicle when they are in the "STORE" position.
The system will operate better if kept clean and free
from caked on mud or ice.
OPERATIONAL CHECK
Check that all lights work according to the "INDICATOR
LIGHT" Section. Correct function of the red "WARNING"
Review the OPERATOR MANUAL. Run the system
according to the SYSTEM OPERATION (LEVELING) Section.
Note any abnormal operation.
Review the "JACK RETRACTION" Section. Make sure the
jacks will fully retract to the "STORE" position. Jacks should
not interfere with any of the coach when in the "STORE"
All maintenance should be done as part of the normal
servicing of the coach. The oil level is checked and filled through the breather cap.
clean. from weathering.
light is important.
position.
FLUID: HWH Specialty Hydraulic Oil is recommended. In an
brake fluid or hydraulic jack fluid. Use of these can damage
and can cause staining should a leak occur. DO NOT USE
Dexron automatic transmission fluid contains red dye
emergency Dexron automatic transmission fluid can be used.
seals.
NOTE:
Clear any dirt away from the breather/filler cap before
removing. The oil level should be within one inch of the
are 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.
Refer to the "HYDRAULIC LINE CONNECTION
DIAGRAM - MULTIPLE ROOM EXTENSIONS" page
for information concerning the correct position of each
room before checking the oil level.

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

NOTE: BEFORE OPERATING ANY MANUAL VALVE RELEASE
READ AND UNDERSTAND PROCEDURE FOR MANUAL JACK
RETRACTION IN OPERATOR’S INSTRUCTIONS.
HYDRAULIC LINE CONNECTION DIAGRAM
MP65.600C
08SEP09
(WITH 4 STRAIGHT-ACTING JACKS)
PUMP/MANIFOLD
ASSEMBLY
SHUTTLE
VALVE
LEFT
FRONT RIGHT FRONT
RIGHT
REAR
LEFT
REAR
625 OR 625S SERIES LEVELING SYSTEMS
BREATHER
CAP
VELOCITY VALVE
NOTE: SOME
MANIFOLDS
ARE EQUIPPED
WITH VELOCITY
VALVES PRESSURE
50 PSI
SWITCH
PRESSURE
3000 PSI
SWITCH
(ROOM EXTENSION MANIFOLD NOT SHOWN)
THIS MANIFOLD
"T"-HANDLE, (2) SMALL VALVES WITH VALVE RELEASE NUTS
AND (1) LARGE VALVE WITH A VALVE RELEASE NUT.
IS SHOWN WITH (1) LARGE VALVE WITH A VALVE RELEASE
LF RF
LR RR
NUTS
SMALL VALVES
WITH RELEASE
CHECK PUMP
PRESSURE
HERE
MP65.2802
625 MANIFOLDS.
BE USED ON ALL
SWITCH MAY NOT
PRESSURE
NOTE: 50 PSI
LARGE VALVE
WITH RELEASE
"T" HANDLE
NUT LOCATED
WITH RELEASE
LARGE VALVE
UNDER
PLASTIC PLUG

3500 PSI
RR
LR RF
LF
50 PSI SWITCH
50 PSI
SWITCH
JACK
PRESSURE
SWITCH
JACK
CYLINDER
LEFT REAR RIGHT REAR
RIGHT
FRONT
LEFT
FRONT
MP65.601C
12MAR1
8
3000 PSI
SWITCH
RELIEF VALVE
RR
625 - 625S - 725 SERIES LEVELING SYSTEM
HYDRAULIC SCHEMATIC DIAGRAM
STEEL TUBE
VALVES (4)
JACK SOLENOID
M
HYDRAULIC POWER
TOP VIEW
STEEL TUBE
RF
CHECK VALVE (4)
INNER
LEVELING SYSTEM
SOLENOID MANIFOLD
ASSEMBLY 50 PSI PSW
SHUTTLE VALVE
PRESSURE PORT
OUTER
CHECK
VALVE (4)
LEVELING SYSTEM
SOLENOID MANIFOLD
ASSEMBLY
3000 PSI PSW
800 PSI TO
SHIFT SHUTTLE
VALVE
SHUTTLE VALVE MAY NOT
BE ON ALL
625 MANIFOLDS
LF LR
NOTE: LARGE SOLENOID VALVES
SHOWN. MANIFOLD MAY BE
EQUIPPED WITH TWO OR FOUR
SMALL SOLENOID VALVES