HWH 325 SERIES User manual

OPERATOR’S MANUAL
ML39001/MP05.7123
18DEC06
Touch Panel Control
Hydraulic Stabilizing
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
325 SERIES STABILIZING SYSTEM
HWH TOUCH PANEL-CONTROLLED
Two Straight-Acting Jacks
R
CORPORATION
W
HH
R
CAUTION!
HWH HYDRAULIC JACK CONTROL
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
STORE
OFF
ON
R
JACK DOWN
PARK BRAKE MUST
BE SET TO OPERATE

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 FUNCTIONS
auto stabilize function.
stabilizing system.
CONTROL IDENTIFICATION
"ON"
"OFF"
POWER ON
Light
CONTROL BUTTONS INDICATOR LIGHTS
"STORE"
RIGHT SIDE
EXTEND
the same time.
extend their respective jack to lift the vehicle.
MP25.4723
19DEC06
will retract their respective jack to lower the vehicle.
LEFT SIDE EXTEND
POWER ON LIGHT :
"JACK DOWN" :
"ON" BUTTON :
"OFF" BUTTON :
"STORE" BUTTON :
EXTEND BUTTONS (UP ARROWS) :
RETRACT BUTTONS (DOWN ARROWS) :
Push this button any time to start the
This button turns off control power to the
This button will retract both jacks at
These buttons will
These buttons
This light indicates the system is
These lights are functional only when the
ignition is in the "ON" or "ACC" position, and the jacks are
extended 1/4 to 1/2 inch.
This is a
STORE
Indicator Light
STORE INDICATOR LIGHT : This light will be on when the
system is in the store mode.
OFF
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
CAUTION!
STORE
ON
Button
Button
Button
Button
Button
HWH HYDRAULIC JACK CONTROL
R
BE SET TO OPERATE
JACK DOWN
PARK BRAKE MUST
RIGHT SIDE
RETRACT
Button
LEFT SIDE RETRACT
Button
active.
Indicator light
JACK DOWN
(2) red
MASTER "JACKS DOWN" WARNING LIGHT :
light mounted in the dash seperate from the touch panel.
If eqquipped, it will be on when any one or more jacks are
extended and the ignition is in the "ON" position and the
park brake is off.

OPERATING PROCEDURES
STABILIZING PROCEDURE
MP35.302C
19DEC06
2. Turn ignition switch to "ON" or "ACCESSORY".
a month or whenever the vehicle is used, to keep the
system in operating condition.
SITE SELECTION
Choose a fairly level area for parking as leveling capabilities
with a two jack system is very limited. Maintain adequate
1. Place gear selector in the parking position, apply park brake
will turn on, but the system will not operate.
ROOM EXTENSION PROCEDURES
extension read this section carefully.
If the vehicle is equipped with kick down jacks, the wheels
MUST be blocked securely.
IMPORTANT: If the vehicle is equipped with a room Refer to the vehicle owner’s manual for proper operation of
room extensions.
IMPORTANT: Do not use a room extension support
when the vehicle is supported by the stabilizing system.
and block tires securely.
3. Push the "ON" button on the touch panel. The POWER ON
light will be lit.
7. Push the "OFF" button on the touch panel.
8. Turn the ignition switch off.
4. Place pads under the jacks at this time if necessary.
NOTE: The leveling system should be cycled once
NOTE: If the hand/auto park brake is not set, the panel
5. Use EXTEND buttons to extend both jacks to the ground.
Each jack should lift the vehicle 1/2 to 1 inch to ensure
proper stabilizing. As each jack, extends 1/4 to 1/2 inch, the
other may cause twisting stress on the vehicle.
NOTE: Lifting the vehicle more with one jack than the
clearance in all directions for vehicle, specialty equipment,
room extensions, awnings, doors steps, etc. 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, a wood block
or pad should be placed under each jack.
corresponding red WARNING light on the touch panel will
come on.
recommended to retract room extensions before
Procedure before operating room extensions. It is
NOTE: It is recommended to complete the Stabilizing
retracting jacks.

OPERATING PROCEDURES
MP35.308C
18DEC06
CAUTION:
IMPORTANT:
RETRACT PROCEDURES
THE OPERATOR MUST BE SURE THAT
THERE ARE NO OBJECTS UNDER THE VEHICLE AND
THAT ALL PEOPLE ARE CLEAR OF THE VEHICLE.
DO NOT interrupt power to the stabilizing
system while it is in the STORE mode. DO NOT push the
"OFF" button or turn the ignition key. The system must be
allowed to completely finish the STORE mode. If the engine
the vehicle may be moved when the jacks are in the
"STORE" position. This will not interrupt the store procedure.
3. The system will automatically shut down approximately
two minutes after the two red WARNING lights are out.
out the system will continue to store. Push the "OFF"
button and have the system serviced.
procedure see MANUAL JACK RETRACTION Section.
was started before putting the system in the STORE mode,
1. Turn the ignition switch "ON" and press the "ON" button
one time. The ON indicator light will glow steady.
2. Press the "STORE" button. As each jack retracts, its red
WARNING light will go out. The vehicle can be moved as
soon as the red WARNING lights are out, provided the jacks
are in the STORE/TRAVEL position. NOTE: If jacks cannot be retracted by the above
4. Turn the ignition switch to the "OFF" position or proceed
IMPORTANT: If any one red WARNING light does not go
IMPORTANT: It is recommended to not retract the
stabilizing system until all rooms are fully retracted
to travel.
CAUTION:DO NOT MOVE THE VEHICLE WHILE
THE LEVELING JACKS ARE STILL I 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.
EXTEND POSITION
STRAIGHT-ACTING
STORE/TRAVEL POSITION
JACK POSITIONS
and any specialty equipment is stored.

OPERATING PROCEDURES
MP35.317C
18DEC06
MANUAL JACK RETRACTION
(2 Jack Systems with Valve Release Nuts)
the 1/4" nut driver supplied.
2. Allow clearance for the vehicle to lower.
3. Retract the jacks by opening the two solenoid valves.
Slowly turn the valve release nuts counter clockwise using
IMPORTANT: Only open the valves enough to retract
the jacks. DO NOT turn the release nuts more than
4 and 1/2 turns. Turning the nuts more could damage
the jacks for travel.
RELEASE IS OPERATED.
NOTE: Use the Valve Release Nuts for retracting only if
the "STORE" button on the control panel will not retract
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
1. Locate the (2) valve release nuts on the solenoid valves.
The solenoid valves are located on the power unit/valve
the valves.
assembly.
CAUTION:KEEP AWAY FROM THE WHEELS,
POWER UNIT
VALVE RELEASE NUT
VALVE ASSEMBLY
7. The system should now be repaired before using again.
DO NOT tighten the nuts past this point as internal
5. Check that both jacks are now retracted.
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
6. Close the valves by turning the valve release nuts
IMPORTANT: Once the valve release nuts are snug,
BREATHER CAP
damage may occur to the solenoid.
clockwise.

FRONT
NOTE: BEFORE OPERATING
VALVE RELEASE NUTS, READ AND UNDERSTAND
PROCEDURE FOR MANUAL JACK RETRACTION
IN OPERATOR’S INSTRUCTIONS.
HYDRAULIC LINE CONNECTION DIAGRAM
MP65.271C
18DEC06
WITH 2 STRAIGHT-ACTING JACKS
LEFT
SIDE RIGHT SIDE
PUMP/MANIFOLD
ASSEMBLY
VALVE
RELEASE
NUTS
SHUTTLE
VALVE
50 PSI
PRESSURE
SWITCH
BREATHER
CAP

12 VOLT D.C.
HYDRAULIC
POWER UNIT
M
RELIEF VALVE
RETURN PRESSURE
SOLENOID MANIFOLD
ASSEMBLY
CHECK
VALVE
INNER
CHECK
VALVE
OUTER
SOLENOID SOLENOID
VALVE RSVALVE LS
PRESSURE/
RETURN
SHUTTLE
VALVE 50 PSI
SWITCH
MP65.451C
18DEC06
HYDRAULIC SCHEMATIC
TOUCH-PANEL CONTROLLED LEVELING SYSTEM
WITH 2 STRAIGHT-ACTING JACKS
LEFT RIGHT
3500 PSI

MP85.3325
2 JACK STABILIZING SYSTEM
19DEC06
ELECTRICAL CONNECTION DIAGRAM
A AB B
SIDE
RIGHT
JACK
LEFT
SIDE
JACK TO JACK
WARNING
6235 (WHITE)
4000 (GREEN) 6235 (WHITE)
3000 (BLACK)
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
HWH HYDRAULIC JACK CONTROL
CAUTION!
OFF
STORE
ON
R
JACK DOWN
BE SET TO OPERATE
PARK BRAKE MUST
SWITCH
SEE ELECTRICAL
CONNECTION
DIAGRAM
HYDRAULIC MANIFOLD
GROUNDING
CONNECTION SYSTEM
DIAGRAM - PUMP RELAY
SEE ELECTRICAL CONNECTION
IGNITION ACCESSORY WARNING LIGHT CONTROL BUZZER CONTROL
6120
6110
7698
9000
TO PARK BRAKE
SWITCH (LABELED)
TO BRAKE
LIGHT ON
DASH (LABELED)

MP85.3335
19DEC06
MANIFOLD DIAGRAM
3400
BA
4400
8101
A
B
PRESSURE
SWITCH 50 PSI
ELECTRICAL CONNECTION DIAGRAM
HYDRAULIC MANIFOLD
TWO JACK STABILIZING
E.D.
P.
E.D.
P.
6231
6231
SEE POWER
UNIT/HARNESS
GROUNDING
INSTRUCTIONS
SEE PUMP
RELAY
CONNECTION
DIAGRAM
VIEW FROM TOP
LEVELING SYSTEM
PUMP/MANIFOLD HARNESS
6235
6231
6230
6100
6100
8600
LS
RS
6230

MP85.3345
18DEC06
ELECTRICAL CONNECTION DIAGRAM
PUMP RELAY CONNECTIONS
SYSTEM GROUNDING
E.D.
P.
E.D.
P.
PUMP RELAY CONNECTIONS
LS
RS
VIEW FROM TOP
FUSE
15AMP
15AMP
FUSE
TO +12 BATTERY
PUMP RELAY CONTROL
8600
6100
6100
GROUND RELAY PUMP
PUMP/MANIFOLD HARNESS
6230
SEE ELECTRICAL
CONNECTION
DIAGRAM
HYDRAULIC
MANIFOLD
SYSTEM GROUNDING
IMPORTANT: THE PUMP MUST HAVE A GOOD FRAME
GROUND TO FUNCTION PROPERLY. IF NECCESSARY,
ADD A #2 GROUND CABLE FROM THE PUMP GROUND
STUD TO THE BATTERY GROUND FRAME RAIL
MOUNTING BOLT.
SEE ELECTRICAL
MANIFOLD
HYDRAULIC
DIAGRAM
CONNECTION
PUMP GROUND STUD
6230
6231
6235
PUMP/
MANIFOLD
HARNESS

MP85.3355
19DEC06
ELECTRICAL CONNECTION DIAGRAM
CONNECTOR AND WIRE INFORMATION
1
2
3
456
7
8
9
10
11
12 13 14
15 16
17
18
19
20
21
22
23
24 25 26 27
28
29
30
31
PIN COLOR WIRE DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14 THRU 31 - NO CONNECTION
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
WHITE
RED
RED
BLACK
BLACK
RED
RED
SWITCHED +12 TO CONTROL PUMP RELAY
SWITCHED GRND FROM TOUCH PANEL TO CNTL MASTER WARNING LIGHT/BUZZER
SWITCHED GROUND FROM RIGHT REAR WARNING SWITCH WITH JACK EXTENDED
SWITCHED +12 TO LEFT REAR SOLENOID VALVE
SWITCHED +12 TO RIGHT REAR SOLENOID VALVE
SWITCHED GROUND FROM LEFT REAR WARNING SWITCH WITH JACK EXTENDED
GROUND FOR TOUCH PANEL
+12 BATTERY FROM PUMP RELAY FOR HYD SOLENOID VALVE
+12 BATTERY FROM PUMP RELAY FOR HYD SOLENOID VALVE
SWITCHED GROUND FROM 50 PSI PRESSURE SWITCH
+12 VOLTS FROM ACCESSORY TO TOUCH PANEL
+12 VOLTS FROM IGNITION TO TOUCH PANEL
SWITCHED GROUND WHEN PARK BRAKE IS SET
NUMBER
WIREWIRE
8600
7698
3000
4400
3400
4000
6230
6100
6100
8101
9000
6110
6120
WIRES NOT FOUND IN THE ROUND CONNECTOR
GROUND FOR SOLENOID VALVES FROM HWH GROUND STUD
GROUND FOR JACK WARNING SWITCHES FROM HWH GROUND STUD
GROUND FOR PUMP RELAY FROM HWH GROUND STUD
N/A
N/A
N/A
WHITE
WHITE
WHITE 6230
6231
6235
PUMP/MANIFOLD
HARNESS
CONNECTOR

MP85.3365
19DEC06
ELECTRICAL CONNECTION DIAGRAM
TOUCH PANEL SCHEMATIC
15A
T1
U1
CR3-1 C1
21
R1
64
CR5-1
CR3
RELAY
TIMER
5
C4
83CR2
SWITCH(S)
WARN
JACK
F1
SW12
CR1-1
SW9
LD9
SW10 CR4-1 90SEC
T1
CR5
SW5
PR3-1
CR2-1 LD6 R3
PR1
CR1
PMP
PMP-1
GND
BATTERY
D18
D9
D1
D2
MV1
D5
D6
MV2
MV3
D8
P38028.PCB
2A
10
3
SW2 PR2
D3
F2
PR1-1 RRR
D10
6
PR3
D4
SW6
SW1
F3
PR2-1 LRR
CR4
D7
5
R2
D11
D12
D13
D14
D15
D16 D17
4
RR
LR
LD10
R5
LD11
R4
D19
11
IGN D20
D21
CR6-1
CR6-2
12 50LB P_SW
CR6
D22
ACC
BUZZER
CR7-1
9PARK BRAKE
CR7
1. PARK BRAKE MUST BE SET BEFORE SYSTEM WILL OPERATE.
2. IF PARK BRAKE IS RELEASED WITH IGNITION ON AND JACKS
EXTENDED, WARNING BUZZER WILL SOUND.
3. PUSHING "STORE" BUTTON WILL STORE JACKS AUTOMATICALLY
THEN TURN SYSTEM OFF.
IGN
D23
8
CR1 - LATCH UP
CR2 - T1 AUTO OFF AFTER STORE
CR3 - 1 RESET
CR4 - STORE LATCH PUMP INTERUPT
CR5 - TORE LATCH UP
CR6 - 50 LB P_SW
CR7 - PARK BRAKE
PR1 - RR JACK
PR2 - LR JACK
PR3 - PUMP
D25
D24
15A
1 - RED(W6120)
2B - BAT RED(W6100)
3 - GND WHT(W6230)
4 - RR JACK BLK(W3400)
5 - LR JACK BLK(W4400)
6 - PUMP BLK(W8600)
7 - BZR/WRN CONTROL BLK(W7698)
8 - IGN RED(W6110)
9 - PARK BRAKE BLK(W9000)
10 - LR WRN SW BLK(W4000)
11 - RR WRN SW BLK(W3000)
2B
2A - BAT RED(W6100)

LINE FUSE HOLDER
JACKS DOWN LIGHT
INCLUDED IN
HARDWARE KIT
CONNECT THIS END
TO IGNITION "ON" POWER
5-15 AMP FUSE
+
_
6110 PIGTAIL
W/ DIODE AND IN
7698
BUZZER
PIGTAIL PROVIDED
MP85.3375
19DEC06
MASTER LIGHT/BUZZER CONNECTION DIAGRAM
MANUAL STABILIZING SYSTEMS
A MASTER WARNING INDICATOR SHOULD ALWAYS BE USED. WHEN THE LEVELING SYSTEM HAS STRAIGHT
ACTING JACKS A WARNING BUZZER MUST BE USED.
WHEN BOTH A RED LIGHT AND WARNING BUZZER ARE USED THE +12 POWER FOR BOTH INDICATORS
IS SUPPLIED BY THE IGNITION SWITCH. THE POWER MUST COME FROM THE "ON" SIDE OF THE IGNITION
SWITCH, NOT THE "ACC" SIDE. (SEE FIGURE BELOW)
CONTROL BOX, THE SYSTEM MAY BE OPERATED IN ACCESSORY WITHOUT THE BUZZER SOUNDING. THE
NEGATIVE SIGNAL FOR THE WARNING INDICATORS MUST ALWAYS COME FROM THE TOUCH PANEL.
NOTE: BY SUPPLYING IGNITION POWER TO THE WARNING BUZZER AND LIGHT, AND "ACC" POWER TO THE
DIODE
6111
SEE ELECTRICAL
CONNECTION
DIAGRAM
2 JACK STABILIZING
SYSTEM

BREATHER CAP - DIPSTICK - 1/4" NUT DRIVER
MP85.999X
20JAN10
VALVE RELEASE
NUT 1 1/2" DIAMETER
SOLENOID VALVE
NOTE: DO NOT turn the valve
release nut more than 4 and 1/2
(four and one half) turns counter
clockwise. Damage to the valve
may result.
OIL LEVEL
BREATHER CAP
OIL LEVEL GROOVES
1/4" NUT DRIVER
NOTE: THE BREATHER CAP IS LOCATED
ON THE TOP SIDE OF THE POWER UNIT RESERVOIR.
IMPORTANT: PRIOR TO REMOVING THE BREATHER CAP,
EITHER TO CHECK THE OIL LEVEL OR TO USE THE 1/4" NUT DRIVER,
CLEAN ANY DEBRIS FROM THE TOP OF THE RESERVOIR.
INCLUDING DEBRIS INSIDE THE 1/4" NUT DRIVER.
REMOVE ANY PAINT CHIPS OR OTHER DEBRIS FROM THE DIPSTICK
BEFORE RETURNING THE BREATHER CAP TO THE RESERVOIR,
VALVE RELEASE
NUT
to the valve may result.
turns counter clockwise. Damage
NOTE: DO NOT turn the valve
release nut more than 2 full
PLASTIC PLUG
REMOVE TO
GAIN ACCESS
TO THE 1/4"
VALVE RELEASE
NUT
SOLENOID VALVE
2 1/4" DIAMETER