HWH 100 Series User manual

OPERATOR’S MANUAL
ML10037/MP05.0502/LHD-S
26FEB04
Four Lever 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
100 SERIES LEVELING SYSTEM
HWH LEVER-CONTROLLED
Straight-Acting Jacks
Suspension Air Dump
AP10037
W
CORPORATION
HH
R
SEPARATE CONTROLS
BEFORE USING. BLOCK FRAME AND TIRES SECURELY
LR
BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
STORE
EXTEND
LF RF
CORPORATION
HWH
R
RR
CAUTION! UNDERSTAND OPERATOR’S MANUAL
RR
RR
LEVELING
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
BLOCK FRAME AND TIRES SECURELY BEFORE
CAUTION!
HYDRAULIC
5AMP
FUSE
LR
LR
WARNING
H
CORPORATION
LF
H
LF
W
LEVEL
RF
R
RF
LEVEL
OFF
DUMP
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 FUNCTIONS
CONTROL IDENTIFICATION
MP25.08
13NOV97
CONTROLS INDICATOR LIGHTS
power to the "LEVEL" and "WARNING" lights, and the power
Push a lever toward "EXTEND" to extend a jack or "STORE" to
retract a jack.
corresponding corner is low. Extend the appropriate jack(s) to
put out the yellow light(s). One or two yellow lights can be on
at the same time. The coach is level when all yellow lights
are out.
BEFORE USING. BLOCK FRAME AND TIRES SECURELY
BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL
CAUTION!
H
CORPORATION
H
W
R
EXTEND
STORE
LR LF RF RR
H
CORPORATION
H
W
R
LEVEL
HYDRAULIC LEVELING
WARNING
CAUTION!
BLOCK FRAME AND TIRES SECURELY BEFORE
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
DUMP
OFF
FUSE
5AMP
LR
LR LF
LF RF
RF
RR
RR
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
"WARNING" LIGHTS
(4 RED)
CONTROL CIRCUIT
FUSE (5 AMP)
"LEVEL" LIGHTS
(4 YELLOW)
POWER ON/MASTER
WARNING LIGHT
"DUMP/LEVEL/OFF"
ROCKER SWITCH
JACK CONTROL
LEVER (4)
LEVEL
unit. The "DUMP" position on the switch is a momentary posi-
tion. Air will exhaust from the vehicle suspension while the
switch is held in the "DUMP" position. The switch does not
control the power to the master "JACKS DOWN" warning light,
the master WARNING light on the panel or the buzzer.
ever the corresponding jack is extended 2 inches or more, provided
the ignition switch is in the "ON" or "ACC" position and the
system is on. Some vehicles are equipped with a dash mounted
master "JACKS DOWN" light which will be on when one or
more jacks are extended 2 inches or more, provided the ignition
switch is in the "ON" position.
2 inches or more and the ignition switch is in the "ON" position.
"DUMP/LEVEL/OFF" ROCKER SWITCH:
CONTROL CIRCUIT "FUSE":
JACK CONTROL LEVER:
WARNING BUZZER: "LEVEL" LIGHTS:
"WARNING" LIGHTS:
POWER ON/MASTER WARNING LIGHT:
This fuse protects the panel.
These levers control individual jacks.
A buzzer will sound if a jack is extended
A red "WARNING" light will be on when-
A lit yellow "LEVEL" light indicates the
This switch controls This light will be
on if the ignition is in the "ON" or "ACC" position and the "DUMP/
LEVEL/OFF" rocker switch is in the "LEVEL" positon or if any
one of the jacks are extended 2 inches or more and the igni-
tion switch is in the "ON" or "ACC" position.

OPERATION PROCEDURES
LEVELING PROCEDURE
1. Place gear selector in the park position apply the park brake.
DRAW WILL RESULT IF CONTROL LEVERS ARE PARTIALLY
OPERATED TOWARD "EXTEND" FOR AN EXTENDED PERIOD
OF TIME.
4. A lit yellow "LEVEL" light indicates that corner of the vehicle
is low. Extend jacks as needed to put out all the yellow lights.
5. 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.
6. Turn off the rocker switch on the leveling system panel.
SITE SELECTION
MP35.1024
19NOV07
LEVELING TIPS: Two jacks maybe operated at the same time,
if desired. Operation of both side jacks at the same time often
provides a smoother lift while reducing stress on the vehicle
and jacks. If for example, a right front and a right rear yellow
"LEVEL" light is on, operate the right rear jack or the right
front and right rear jacks together. Right to left leveling is usu-
ally best accomplished using a rear jack or a front and rear
jack together. If a substantial amount of leveling is required,
it is often best to operate two jacks at the same time, leveling
If the ground is too uneven the jacks may not have enough
stroke to level the vehicle. The vehicle may have to be moved.
side to side first.
ROOM EXTENSION PROCEDURES
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 complete. Do
If the vehicle is equipped with a room extension IMPORTANT:
NOT retract the leveling system until all room extensions are
retracted. NEVER operate the leveling system when any
Refer to the vehicle owner’s manual for proper operation of
room extensions are extended.
room extensions.
IMPORTANT: Do not use a room extension support when the
vehicle is supported by the leveling system.
Block tires securely.
2. Turn ignition switch to or "ACCESSORY". The vehicle’s engine
must be off. Running the engine during or after leveling may
inflate the air suspension, lifting the vehicle out of level.
3. Push and hold the rocker switch to the "DUMP" position
until the air is completely exhausted from the vehicle’s suspension
system.
As a jack is extended 2 inches or more, move its respective
red "WARNING" light will come on.
IMPORTANT : OVERHEATING AND EXCESSIVE CURRENT
Park with the front of the vehicle facing downhill if possible. If parking on soft ground or asphalt paving, wood blocks or pads
should be placed under the jacks.

OPERATING PROCEDURES
RETRACT PROCEDURES
MP35.1026
09MAY97
3. Start the vehicle engine and let air pressure build up in the
suspension.
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
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
THE STORE/TRAVEL POSITION AND THAT THE VEHICLE
JACK POSITIONS
2. Visually check that all jacks are in the STORE/TRAVEL IS AT THE PROPER RIDE HEIGHT BEFORE MOVING THE
VEHICLE.
4. Push the rocker switch on the jack control plate to "OFF".
Turn the ignition to off or proceed to travel.
IMPORTANT: Always retract the two front jacks first.
1. Move the two front control levers to the STORE position.
Retracting the jacks in pairs (front and rear) will provide a smooth
retraction. Move the rear control levers to the STORE position.
EXTEND POSITION STORE/TRAVEL POSITION
position. With the ignition switch in the "ON" position and the
rocker switch in the "LEVEL" position, the red "WARNING"
lights, the master "JACKS DOWN" light and the buzzer will be
off. Check that the vehicle is at the proper ride height.

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:

MAINTENANCE
HYDRAULIC CONTROL VALVE ADJUSTMENT
Two parts of the control valve are possible to adjust. The proper
adjustments for these parts are made at the factory, so readjust-
ments will rarely be necessary.
under warranty, the complete valve unit should be replaced,
but not the light panel.
The following procedures are recommended to adjust them if
the need arises.
1. ADJUSTMENT OF THE DETENT PLATE: Adjustment of
the detent plate is necessary if the detent plate fails to hold
the control levers in the retract position, or if the plunger is not
depressed sufficiently by the valve handle in the retract position.
To adjust the detent plate, loosen the nuts which hold the valve
mounting brackets and the detent plate to the valve assembly
The proper adjustment can be made by moving the detent plate
up or down to a point where the valve handle is resting solidly
on the detent in the retract position, yet holding the plunger
down to it’s full extent or no less than 1/16" of this extension.
2. ADJUSTING THE MICRO SWITCH: The micro switch will
need adjusting if the activating rod does not fall directly upon
the nipple of the micro switch.
The adjustment must be made after disassembling a portion of
of the control valve. First, remove the mounting bracket and
the detent plate. Next, remove the snap rings on the pivot rod,
and carefully slide off the valve handles spacers and spring,
notice where each part must go during reassembly.
The micro switch is the adjusted by loosening the small hex nuts
which hold the micro switch to the pivot plate, and then making
Finally, reassemble the control valve, remembering to properly
adjusting the detent plate as it is replaced.
PLUNGER
ROD
PIVOT ROD
SNAP RING
VALVE ASSEMBLY
SPACER
SPACER
SPRING
SPACER
PIVOT ROD
MOUNTING
BRACKET
NUTS
VALVE
HANDLE
PIVOT
PLATE
MICRO
SWITCH
ACTIVATING
ROD
MOUNTING
BRACKET
DETENT
PLATE
the microswitch correctly.
the proper adjustment.
NOTE: These valve adjustments should only be made on a
non-warranty basis. If the valve needs to be repaired or adjusted
NOTE: Sometimes the activating rod can be bent to position
4 LEVER HYDRAULIC CONTROL VALVE
01MAY97
MP45.3

TROUBLE SHOOTING
1. JACK RETRACTS AFTER COACH IS LEVEL.
A. Hose or jack has external leak.
B. Fluid is leaking back to reservoir through control valve.
2. LEVELING JACKS WILL NOT RETRACT COMPLETELY.
A. Jack clogged with mud or ice.
B. Main rod bent or scored.
C. Valve plunger not completely depressed by valve handle.
D. Springs weak or broken.
E. Hydraulic line pinched.
3. IGNITION SWITCH ON, BUT NO POWER TO PUMP AND/
OR LIGHT.
A. Bad micro switch.
B. Pump relay not functioning.
D. Bad rocker switch.
C. 12 volts from main power source not present.
G. Blown fuse.
E. Faulty wire or electrical connection.
F. Pump not grounded.
4. LEVELING LIGHTS (YELLOW) NOT FUNCTIONING
PROPERLY.
A. Yellow lights will not go out when vehicle is level: adjust
sensing unit.
5. WARNING LIGHTS (RED) NOT FUNCTIONING PROPERLY.
A. Light will not come on: check for broken wire at warning
switch on the jack.
B. Lights will not go out: bad warning switch or wires are
shorted to ground.
C. Check PC board.
7. HYDRAULIC PUMP ACTIVATES WITHOUT USE OF
C. Pump is not developing pressure.
CONTROL VALVE HANDLES.
B. Oil supply low in reservoir.
D. Broken hydraulic line.
6. HYDRAULIC PUMP ACTIVATES, BUT THE JACKS WILL
NOT EXTEND.
A. Micro switch out of adjustment.
D. Short in PC board.
D. Broken spring on pivot rod.
The following is a list of troubles, and possible solutions which might occur to the leveling system.
C. Pump relay stuck.
A. Control valve not in the full "EXTEND" position.
8. AIR WILL NOT DUMP FROM SUSPENSION.
A. Bad light panel.
B. Air dump solenoid valve bad.
9. SUSPENSION WILL NOT INFLATE.
A. Bad light panel.
B. Air dump solenoid stuck open.
B. More than two yellow lights on: replace sensing unit.
C. Check PC board.
NOTE:
Only qualified technicians should install or repair leveling systems on vehicles. A knowledge of hydraulics, welding, the
MP55.02
10NOV97
vehicle’s suspension and electrical system, as well as an understanding of the leveling system’s hydraulics and electronics is
required.

LF RF
RR
FRONT
RETURN
PRESSURE
100 SYSTEM
HYDRAULIC LINE CONNECTION DIAGRAM
MP65.0505
24AUG95
LR
EXTEND
STORE
FOUR LEVER SEPARATE CONTROL

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
100 SERIES LEVER-CONTROLLED LEVELING SYSTEM
SEE PANEL
CONNECTION
DIAGRAM
SENSING
UNIT
MASTER WARNING
LIGHT/BUZZER
CONNECTION DIAGRAM
PACKARD CONNECTORS
COLORS TO A & B ON
DO NOT REVERSE WIRE
B
A
LF
B
LR
A
RR
B
A
RF
TO WARNING
SWITCH TO WARNING
SWITCH
WARNING
SWITCH
WARNING
SWITCH MP85.0515
09FEB99
B
A
WITH 4 LEVERS, SEPARATE CONTROLS AND SUSPENSION AIR DUMP
SEE PUMP RELAY
ELECTRICAL
CONNECTION DIAGRAM
BEFORE USING. BLOCK FRAME AND TIRES SECURELY
BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL
CAUTION!
H
CORPORATION
H
W
R
EXTEND
STORE
LR LF RF RR
H
CORPORATION
H
W
R
LEVEL
HYDRAULIC LEVELING
WARNING
CAUTION!
BLOCK FRAME AND TIRES SECURELY BEFORE
REMOVING TIRES OR CRAWLING UNDER VEHICLE.
DUMP
OFF
FUSE
5AMP
LR
LR LF
LF RF
RF
RR
RR
UNDERSTAND OPERATOR’S MANUAL BEFORE USING.
B
A
A
B
A
A
B
AIR DUMP
VALVE OTHER AIR DUMP
VALVE ARRANGEMENTS
ARE POSSIBLE
LEVEL
SEE SUSPENSION AIR
DUMP DIAGRAM FOR ADDITIONAL
EXPLANATION OF AIR DUMP
VALVE CONNECTIONS.
NOTE:
B
FROM +12 ACC.
FUSE 15AMP MAX -
(RED) 6120
(WHITE) 6230
(ORANGE)
1000
(YELLOW)
9300
(WHITE)
6230
(GRAY) 2000
(WHITE) 6230
(YELLOW) 9301
(WHITE)
6230
(BLACK)
3000
(WHITE) 6230
(GREEN) 4000
(WHITE)
6230
NOTE:THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE COLORS.

2-PIN MTA
VALVE MICRO SWITCH
100 SERIES LEVER-CONTROLLED LEVELING SYSTEM
WITH 4 LEVERS, SEPARATE CONTROLS AND SUSPENSION AIR DUMP
BLANK
RR - (BLACK) 3000
RF - (GRAY) 2000
LF - (ORANGE) 1000
LR - (GREEN) 4000
+ WARN - (PURPLE) 6121
- WARN - (BROWN) 7699
PUMP - (BLUE) 6820
GROUND - (WHITE) 6230
RR - RED
RR - GREEN
LF - BLACK
LR - YELLOW
COM. - WHITE
MP85.0520
09FEB99
PANEL CONNECTION DIAGRAM
AIR DUMP - (YELLOW) 9300
AIR DUMP - (YELLOW) 9301
11-PIN MTA
HARNESS
5-PIN MTA
SENSING UNIT
PUMP RELAY CONNECTION DIAGRAM
* FUSE MAY BE REQUIRED - CHECK APPLICABLE CODE
PUMP MUST BE MOUNTED SOLIDLY TO FRAME. SOME PUMPS HAVE A
BATTERY
GROUND
-
GROUND CABLE THAT IS TO BE ATTACHED TO THE GROUND STUD.
+
* FUSE
GROUND STUD
IF THE PUMP BRACKET IS WELDED TO THE
FRAME, USE THE GROUND STUD TO ATTACH THE
PUMP TO THE BRACKET. IF THE PUMP BRACKET IS
BOLTED TO THE FRAME, USE THE GROUND STUD TO
ATTACH THE BRACKET TO THE FRAME.
NOTE:
ELECTRICAL CONNECTION DIAGRAM
WIRE FROM
HARNESS -
(BLUE) 6820
FROM RELAY
TO GROUND STUD -
(WHITE) 6231
FROM HARNESS
FUSED 10AMP -
(WHITE) 6230
NOTE:THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE
COLORS.
TO ACCESSORY +12
POWER FUSED 15AMP MAX -
(RED) 6120
NOTE: THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE COLORS.

100/110 SERIES LEVELING SYSTEM
SWITCH
ROCKER
LEVEL SENSING
RF GREEN
RR RED
GND. WHITE
LR YELLOW
LF BLACK
INDICATOR LIGHTS
YELLOW LEVEL
LIGHT PANEL PC BOARD
UNIT
HWH
LIGHT
LOGO
* BATTERY
(BROWN) 7699
4-LEVER VALVE
MICRO SWITCH
PUMP
SWITCHES
WARNING
5 AMP.
LF - (ORANGE) 1000
RF - (GRAY) 2000
RR - (BLACK) 3000
LR - (GREEN) 4000
LIGHTS
RED WARNING NOT USED
JACK
(RED) 6120
+12 ACCESSORY -
FUSE
M
STRAIGHT-ACTING JACKS WITH AIR DUMP FEATURE
ELECTRICAL SCHEMATIC
(BLUE) 6820
GROUND - (WHITE) 6230
DUMP - (YELLOW) 9300
DUMP - (YELLOW) 9301
SOLENOID(S)
AIR DUMP
AIR DUMP
SOLENOID(S)
PUMP
* FUSE MAY BE REQUIRED
CHECK APPLICABLE CODE.
BUZZER
5 AMP
FUSE
12V
IGN.
JACK
DOWN
LIGHT
+
-
RELAY 6231
6230
6230
NOTE: THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE COLORS
6111 6111
LIGHT PANEL (INTEGRATED OR REMOTE 4-LEVER SYSTEM)
MP85.9940
18JAN99

LINE FUSE HOLDER
JACKS DOWN LIGHT
INCLUDED IN
HARDWARE KIT.
CONNECT THIS END
TO IGNITION "ON" POWER.
5-15 AMP FUSE
+
_
PIGTAIL
W/ DIODE AND IN
BUZZER
MP85.9999
13JAN99
SEE PANEL
CONNECTION
DIAGRAM
CONNECTION
DIAGRAM
SEE PANEL
WARNING LIGHT WIRES ARE INCLUDED
IN 9 OR 11 PIN MTA PLUG
+
-
MASTER LIGHT/BUZZER CONNECTION DIAGRAM
MANUAL LEVELING SYSTEMS
A MASTER WARNING INDICATOR SHOULD ALWAYS BE USED. WHEN THE LEVELING SYSTEM HAS STRAIGHT-
ACTING JACKS A WARNING BUZZER MUST BE USED.
WHEN ONLY A RED MASTER WARNING LIGHT IS USED THE 12+ POWER FOR THE LIGHT COMES THROUGH THE
CONTROL PANEL. (SEE FIGURE 1 BELOW.) 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 2 BELOW)
BY SUPPLYING IGNITION POWER TO THE WARNING BUZZER AND LIGHT, AND "ACC" POWER TO THE CONTROL
PANEL, THE SYSTEM MAY BE OPERATED IN ACCESSORY WITHOUT THE BUZZER SOUNDING. THE NEGATIVE SIGNAL
FOR THE WARNING INDICATORS MUST ALWAYS COME FROM THE CONTROL PANEL.
CAUTION: THE PURPLE WIRE IN THE MASTER WARNING LIGHT HARNESS IS HOT WHENEVER THE IGNITION
IS "ON" OR IN "ACC". THE PURPLE WIRE MUST BE REMOVED FROM THE HARNESS WHEN USING DIRECT IGNITION
VOLTAGE FOR THE MASTER WARNING INDICATORS.
FIGURE 1
FIGURE 2
NOTE:
6111
NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS.
CONTROL WIRE - (BROWN) 7699
PIGTAIL
PROVIDED - (BROWN) 7699
NOTE: DO NOT USE
(PURPLE) WIRE - 6121
REMOVE (PURPLE) WIRE - 6121
FROM HARNESS.
NOTE: SPLICE (BROWN) WIRE - 7699
FROM HWH LIGHT PLATE TO
(BROWN) - 7699 PIGTAIL
WITH BUTT CONNECTOR.
+12 - (PURPLE) 6121