HWH 200 series User manual

OPERATOR’S MANUAL
ML0710/MP05.1503/LH-S
10OCT02
Joystick BI-AXIS Control
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
200 SERIES LEVELING SYSTEM
HWH JOYSTICK-CONTROLLED
Straight-Acting Jacks
Suspension Air Dump
AP0710 - U.S.
AP10299 - Europe
AP21561 - French
W
CORPORATION
HH
R
HWH HYDRAULIC LEVELING
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
OFF CAUTION!
ON
5 AMP
FUSE
FUSE
NOT IN
PARK/
BRAKE
RIGHT
EXTEND
HWH HYDRAULIC LEVELING
"CAUTION"
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
BLOCK FRAME AND TIRES SECURELY BEFORE
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
EXTEND
EXTEND
EXTEND
LEFT
REAR
FRONT
OPERATE
STORE
REAR
FRONT
STORE
OPERATE
R
R

CAUTION !
READ THE ENTIRE OPERATOR’S MANUAL BEFORE OPERATING.
MOVE FORWARD OR BACKWARD WITHOUT WARNING CAUSING INJURY OR DEATH.
EXTENSION.
CAUSING INJURY OR DEATH.
CHIPS, OIL LEAKS, ETC. FOLLOW ALL OTHER APPLICABLE SHOP SAFETY PRACTICES.
NOTE: KEEP THE CONTROL VALVE LEVERS IN THE STORE POSITION WHEN JACKS ARE NOT IN USE.
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
THE JACKS MAY ABRUPTLY SWING UP WHEN THE FOOT CLEARS THE GROUND OR WHEN JACK REACHES FULL
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
IMPORTANT: IF VEHICLE IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE
OPERATING LEVELING SYSTEM.
IF THIS VEHICLE IS EQUIPPED WITH KICK-DOWN STYLE JACKS, DO NOT OVER EXTEND THE REAR JACKS. IF
THE WEIGHT OF THE VEHICLE IS REMOVED FROM ONE OR BOTH REAR WHEELS, THE VEHICLE MAY ROLL FOR-
WARD OR BACKWARD OFF THE JACKS.
MP15
30MAY01
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE LEVELING SYSTEM AND ROOM EXTENSION ARE BEING OPERATED.
problem, please do the following:
customer satisfaction. Therefore, if you discover a defect or
HWH CORPORATION strives to maintain the highest level of
THIS IS NOT TO BE INTERPRETED AS A STATEMENT OF WARRANTY
HOW TO OBTAIN WARRANTY SERVICE
[phone] OR [phone]. Give your name and
address, coach manufacturer and model year, date the
HWH CORPORATION 2096 Moscow Rd. Moscow IA. 52760
notify the Customer Service Department:
If your dealer cannot or will not solve the problem,
Service Department, at HWH CORPORATION.
the problem, he should immediately contact the Customer
the problem quickly. If the dealer has difficulty solving
management people are in the best position to resolve
vehicle or had the leveling system installed. Dealership
Notify the dealership where you purchased the
SECOND:
FIRST:
authorized by HWH CORPORATION, or at the
must be performed by an independent service facility
determined by HWH CORPORATION. All warranty repairs
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
coach was purchased, or the date of system installation,
HWH CORPORATION factory, unless prior written approval
has been obtained from proper HWH CORPORATION
personnel.

CONTROL IDENTIFICATION
"ON" BUTTON
"OFF" BUTTON
FRONT STORE LEVER
(Store/Travel Position)
JACK CONTROL LEVER
REAR STORE LEVER
(Store/Travel Position)
REAR STORE LEVER
(Operate Position)
FRONT STORE LEVER
(Operate Position)
POWER ON LIGHT
"NOT IN PARK/BRAKE"
LIGHT
WARNING LIGHTS
(4 - Red)
LEVELING LIGHTS
(4 - Yellow)
HWH HYDRAULIC LEVELING
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
OFF CAUTION!
ON
5 AMP
FUSE
FUSE
CONTROL CIRCUIT FUSE
(5 AMP)
NOT IN
PARK/
BRAKE
MP25.1510
08JUL96
RIGHT
EXTEND
HWH HYDRAULIC LEVELING
"CAUTION"
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
BLOCK FRAME AND TIRES SECURELY BEFORE
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
EXTEND
EXTEND
EXTEND
LEFT
REAR
FRONT
OPERATE
STORE
REAR
FRONT
STORE
OPERATE
"DUMP" BUTTON
CONTROL FUNCTIONS
CONTROL BUTTONS INDICATOR LIGHTS
"ON" BUTTON :
"OFF" BUTTON :
STORE LEVERS :
JACK CONTROL LEVER :
"DUMP" BUTTON :
POWER ON LIGHT :
"NOT IN PARK/BRAKE" LIGHT :
LEVELING LIGHTS :
WARNING LIGHTS:
WARNING BUZZER :
This is the "ON" button for the leveling sys-
tem. It provides control power to operate the electrical relay
on the pump, the LEVELING lights and the 4 red WARNING
lights. It does not control power to the master "JACKS DOWN"
warning light or buzzer.
This button turns off power to the leveling
system but not the master WARNING light and buzzer.
These two levers are used to retract the
jacks into the STORE/TRAVEL position. They must be in the
operate position for leveling.
Jacks are extended in pairs by
pushing the jack control lever to one of the EXTEND positions.
This movement of the lever activates the pump and directs hy-
draulic fluid to the jacks. When the lever is released it will re-
turn to the neutral (center) position, turning off the pump and
stopping jacks in position.
This button will dump air from the suspen-
sion system only when the panel is on.
This light indicates the system is on.
This indicator light is on when
the "ON" button is pushed, but the hand/auto park brake is not
set. The panel will not turn on.
If a yellow LEVELING light is on, that in-
dicates a side or end of the vehicle is low. Extend the appro-
priate jack pairs to put out the yellow light. Only one yellow
LEVELING light should be on at a time. The vehicle is level
when all yellow lights are out.
A red WARNING light will be on when-
ever the corresponding jack is extended 2 inches or more pro-
vided the ignition switch is in the "ACC" or "ON" position and
the panel is on. Some vehicles are equipped with a dashmount-
ed master "JACKS DOWN" light which will be on when one or
more jacks are extended 2 inches or more, provided the igni-
tion switch is "ON".
A buzzer will sound if a jack is extended
2 inches or more and the ignition switch is "ON".
DUMP

OPERATING PROCEDURES
LEVELING PROCEDURE
MP35.34
19NOV07
3. Push the "ON" button on the light plate. The POWER ON
light will be lit. 8. Push the "OFF" button on the light panel.
SITE SELECTION
1. Place gear selector in the parking position, apply park
7. After the vehicle is level, the jacks not used for leveling
may be extended until they touch the ground. This provides
additional stability against wind and activity in the vehicle.
Do this by pushing the jack control lever to the rear and/or
front as needed to extend any remaining jacks. Do not use
PARK/BRAKE" light will come on while the "ON" button is
pushed. The panel will not turn on if the park brake is not set.
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
BLOCK FRAME AND TIRES SECURELY BEFORE
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
"CAUTION" OPERATE
LEFT RIGHT
EXTENDEXTEND
REAR
EXTEND
STORE
REAR
FRONT
STORE
HWH HYDRAULIC LEVELING
FRONT
EXTEND OPERATE
JACK
LEVER POSITIONS
OPERATE POSITION
CONTROL
LEVER
FRONT
STORE
LEVER
REAR
STORE
LEVER
2. Place the ignition switch in the "ACC" position.
The vehicle’s engine must be off. Running the engine during
or after leveling may inflate the air suspension lifting the
9. Turn the ignition switch off.
4. Push and hold the "DUMP" button until all air is exhausted
from the vehicle’s suspension system.
ROOM EXTENSION PROCEDURES
extension read this section carefully.
If the vehicle is equipped with kick-down jacks, the wheels
MUST be blocked securely. Do NOT operate any room
extension until the leveling and stabilizing procedure is
If the vehicle is equipped with a roomIMPORTANT:
complete. Do NOT retract the leveling system until all room
extensions are retracted. NEVER operate the leveling system
Refer to the vehicle owner’s manual for proper operation of
when any room extensions are extended.
room extensions.
IMPORTANT: Do not use a room extension support when
the vehicle is supported by the leveling system.
5. Move the FRONT and REAR STORE LEVERS to the
OPERATE POSITION. Nothing should happen at this time.
Place pads under jacks if necessary at this time.
brake and block tires securely.
Move the JACK CONTROL LEVER to the EXTEND position
to extend jack pairs corresponding to a lit yellow light. Extend
jack pairs accordingly until all yellow lights are out. It may
take several movements from side to front, or side to rear to
raise a low corner. If the ground is too uneven, the jacks may
not have enough stroke to level the vehicle. The vehicle may
have to be moved.NOTE:
NOTE: The respective RED WARNING LIGHT will come on
when a jack is extended 2 or more inches.
the right or the left extend positions. Jacks used to stabilize
If the hand/auto park brake is not set, the "NOT IN
6. A lit yellow LEVEL light indicates that the end, side or
corner of the vehicle is low. Only one yellow LEVEL light
should be lit at a time. If a corner of the vehicle is low a side
LEVEL light will be on by itself.
vehicle out of level. the vehicle should lift the vehicle 3/4" to 1" after touching the
ground.
Maintain adequate clearance in all directions for vehicle,
room extensions, awnings, doors, steps ect. Vehicle may
move in any direction due to jack extending or retracting,
settling of jacks or vehicle, equipment malfunction etc.
If parking on soft ground or asphalt paving, wood blocks or
pads should be placed under the jacks.

OPERATING PROCEDURES
RETRACT PROCEDURES
MP35.37
12MAR97
4. Push the "OFF" button on the light panel. Turn ignition off
or proceed to travel.
3. Start the vehicle engine and let air pressure build up in the
1. Move the STORE LEVERS to the STORE/TRAVEL POSITION.
CAUTION:
This will allow the jacks to retract.
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
CAUTION: THE STORE LEVERS SHOULD BE KEPT
IN THE "STORE" POSITION WHILE TRAVELING TO KEEP
THE JACKS IN THE STORE/TRAVEL POSITION.
CAUTION: MAKE SURE THAT PEOPLE AND EQUIP-
MENT ARE CLEAR OF THE VEHICLE.
CHECK THAT ALL JACKS ARE FULLY RETRACTED INTO
2. Visually check that all jacks are in the STORE/TRAVEL
IMPORTANT: Always retract the front jacks first.
STORE
LEVER POSITIONS
STORE/TRAVEL POSITION
FRONT
REAR
JACK
CONTROL
LEVER
LEVER
STORE
LEVER
RIGHT
EXTEND
HWH HYDRAULIC LEVELING
"CAUTION"
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
BLOCK FRAME AND TIRES SECURELY BEFORE
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
EXTEND
EXTEND
EXTEND
LEFT
REAR
FRONT
OPERATE
STORE
REAR
FRONT
STORE
OPERATE
JACK POSITIONS
EXTEND POSITION STORE/TRAVEL POSITION
position. With the ignition switch in the "ON" or "ACCESSORY"
position, and the system turned on, the red WARNING lights,
the master "JACKS DOWN" light and the buzzer will be off.
THE STORE/TRAVEL POSITION AND THE VEHICLE IS AT
THE PROPER RIDE HEIGHT FOR TRAVELING.
suspension. Do not move the vehicle until the vehicle is at
the proper ride height for traveling.

MP45.0
3
13NOV1
7
MAINTENANCE
LEVEL SENSING UNIT ADJUSTMENT
UNUSUAL CONDITIONS
BELOW THE SURFACE MOUNTING
LEVEL SENSING UNIT
ON TOP
STICKER SCREWS (3)
UP
SIDE
THIS
REAR
SPRINGS (3)
MOUNTING
SURFACE
OIL LEVEL
ELECTRICAL SYSTEM
The batteries should be in good condition and fully charged.
All electrical connections, especially ground connections,
should be clean, tight, free from corrosion and protected
from corrosion. Weak batteries can cause erratic operation.
Battery cable terminals, battery posts and connections
should be kept clean and protected from corrosion.
NOTE: All major components of the system can be replaced
with rebuilt parts or can be sent to HWH CORPORATION to
be rebuilt, when the system is out of warranty.
In west 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.
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.
Do not move the vehicle while the leveling jacks are still in
contact with the ground. Place the system in the store mode
and then visually check to see if the leveling jacks have
returned to the STORE/TRAVEL position.
MOUNTING SURFACE
ELECTRONIC LEVEL SENSING UNIT
BELOW THE SURFACE MOUNTING
FRONT
SIDE
THIS
UP
SCREWS (3)
SPRINGS (3)
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 the surface as shown or backing out the corresponding
screw if the sensing unit is mounted above the surface. Bump the sensing unit to see that it is settled tight against all
three screw heads and still indicates that the unit is level.
and steps should be fully retracted before checking fluid
level. The oil reservoir is part of the pump / manifold
assembly. The oil level is checked and filled through the
breather cap. Clear any dirt away from the breather / filler
cap before removing.
Any HWH hydraulic equipment, including jacks, slide-outs
servicing of the coach.
All maintenance should be done as part of the normal
there is an oil leak in the system.
purchased and then once every two years. More often if
The oil level should be checked when the vehicle is first
brake fluid or hydraulic jack fluid. Use of these can damage
and can cause staining should a leak occur. DO NOT USE
HWH Specialty Hydraulic Oil is recommended. In an
Dexron automatic transmission fluid contains red dye
emergency Dexron automatic transmission fluid can be used
.
NOTE: Overfilling the tank can cause leakage of oil
should be between the bottom of the dipstick and the
reservoir. Most breather caps have a dipstick. Fluid level
The oil level should be within one inch of the top of the
through the breather cap.
center mark.
FLUID:
seals.
NOTE:

The following is a list of problems, and possible solutions, which might occur to the leveling system.
NOTE:
vehicle’s suspension and electrical systems as well as an understanding of the leveling system’s hydraulic and electronics is
required.
TROUBLE SHOOTING
MP55.2
02APR01
Only qualified technicians should install or repair leveling systems on vehicles. A knowledge of hydraulics, welding, the
1. JACK RETRACTS AFTER COACH IS LEVEL.
A.
B.
2. JACKS WILL NOT RETRACT COMPLETELY.
A.
B.
C.
D.
E.
3. IGNITION SWITCH IS ON, BUT NO POWER TO PUMP
A.
B.
C.
D.
4. PUMP WILL NOT ACTIVATE.
A.
B.
C.
5. HYDRAULIC PUMP ACTIVATES WITHOUT USE OF
A.
B.
C.
6. HYDRAULIC PUMP ACTIVATES, BUT THE JACKS
A.
B.
C.
D.
7. LEVELING LIGHTS (YELLOW) ARE NOT FUNCTIONING
A.
B.
8. WARNING LIGHTS (RED) ARE NOT FUNCTIONING
A.
B.
C.
9. AIR WILL NOT DUMP FROM SUSPENSION.
A.
B.
SUSPENSION WILL NOT INFLATE.
A.
B.
AND OR LIGHTS.
CONTROL VALVE HANDLES.
WILL NOT EXTEND.
PROPERLY.
PROPERLY.
Hose or jack has external leak.
Fluid is leaking back to reservoir through the control
Jack clogged with mud or ice.
Main rod bent or scored.
Valve plunger is not completely depressed by valve
Spring weak or broken.
Hydraulic line pinched.
Park brake not set.
12 volts from power source not present.
Faulty PC board.
Faulty wire or electrical connection.
Grounding switch on valve not working.
Pump relay not functioning.
Pump not grounded.
Grounding switch at valve shorted.
Pump relay stuck.
Relay control wire shorted to ground.
Store levers not in the operate position.
Oil supply is low in reservoir.
Pump is not developing pressure.
Broken hydraulic line.
Yellow lights will not go out when vehicle is level: ad-
If two or more yellow lights are on replace PC board
Light will not come on: check for broken wire at
Lights will not go out: bad warning switch or wires are
Check PC board.
Bad touch panel.
Air dump solenoid is bad.
Bad touch panel.
Air dump solenoid stuck open.
valve.
handle. just sensing unit.
warning switch on the jack.
shorted to ground.
or check level sensing unit.
10.
C. Thermal contraction of fluid, jacks not lifting enough
when stabilizing the vehicle.
D. AIR SUSPENSION reinflation - running vehicle
during leveling or leaks in the air suspension.
E. Bezel plate not installed properly - interferes with
"STORE" levers.

LF RF
RR
FRONT
RETURNPRESSURE
LEFT FRONT RIGHT FRONT
JACK
JACK
LEFT REAR
JACK RIGHT REAR
JACK
PRESSURE
RETURN
HYDRAULIC LINE
CONNECTION DIAGRAM
MP65
04FEB03
LR
200/210/225 SERIES BI-AXIS VALVE
NOTE: Hose fittings at the pump will come directly
out of the pump or if equipped with a room manifold,
out of the top of the room manifold.
BREATHER/
FILLER CAP

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

ELECTRICAL CONNECTION DIAGRAM
200 SERIES BI-AXIS VALVE
SEE PUMP RELAY
CONNECTION DIAGRAM
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
BLOCK FRAME AND TIRES SECURELY BEFORE
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
"CAUTION" OPERATE
LEFT RIGHT
RAISERAISE
REAR
RAISE
STORE
REAR
FRONT
STORE
HWH HYDRAULIC LEVELING
FRONT
RAISE OPERATE
SENSING
UNIT
MASTER WARNING
LIGHT/BUZZER
CONNECTION DIAGRAM
PACKARD CONNECTORS
COLORS TO A & B ON
DO NOT REVERSE WIRE
LF
(WHITE) 6230
(ORANGE)
LR
B
RR
A
RF
DASH
(BLUE) 9000
LABELED
WIRES ARE
TO BRAKE
LIGHT ON
TO PARK
BRAKE SWITCH
WARNING
SWITCH WARNING
SWITCH
WARNING
SWITCH
WARNING
SWITCH
BA
MP85.1515
02JAN01
AIR DUMP
VALVE
WITH SUSPENSION AIR DUMP
SEE SUSPENSION AIR
DUMP DIAGRAM FOR ADDITIONAL
EXPLANATION OF AIR DUMP
VALVE CONNECTIONS -
PUMP RELAY HARNESS
DIAGRAM
CONNECTION
SEE PANEL HWH HYDRAULIC LEVELING
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
OFF CAUTION!
ON
5 AMP
FUSE
FUSE
NOT IN
PARK/
BRAKE
OTHER AIR DUMP
VALVE ARRANGEMENTS
ARE POSSIBLE
NOTE:
BA
A
B
BA
A
B
A
B
A
B
A
B
1000
- 9001
8600
6230
(YELLOW)
9301
(WHITE)
6230
(YELLOW)
9300
(WHITE)
6230 (GRAY) 2000
(WHITE)
6230
(BLACK)
3000
(WHITE)
6230
(GREEN)
4000
(WHITE) 6230
NOTE: THE (4) DIGIT WIRE
NUMBER SUPERSEDES ANY
AND ALL WIRE COLORS.
FROM +12 ACC
FUSE 15 AMP MAX -
(RED) 6120