HWH 600 Series User manual

DUMP
LEVEL AIR
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!
RAISE
H
CORPORATION
H
W
R
FEATURING:
TOUCH PANEL LEVELING CONTROL
HWH COMPUTER-CONTROLLED
OPERATOR’S MANUAL
BRAKE
ML19668/MP05.4719
18MAY01
600 SERIES
LEVELING SYSTEM
FOUR POINT AIR LEVELING
(WITH SYNCHRONIZING CYLINDER)
DUAL CYLINDER ROOM EXTENSION
(WITH SYNCHRONIZING CYLINDER)
DUAL CYLINDER GENERATOR SLIDE
SPACEMAKER ROOM EXTENSION SYSTEM
(ON I-80, EXIT 267 SOUTH)
INTERNET: http: //www.hwhcorp.com
[phone] / [phone]
MOSCOW, IOWA 52760
2096 MOSCOW ROAD
HWH CORPORATION
AP20083

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
HWH LEVELING SYSTEM
AIR LEVELING ONLY
DO NOT OPERATE LEVELING SYSTEM OR USE THE RAISE OR DUMP BUTTONS WHEN TRAVELING AT SPEEDS
IN EXCESS OF 5 MPH.
MP15.1
30MAY01
IMPORTANT: IF COACH IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE
OPERATING LEVELING SYSTEM.
KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE LEVELING SYSTEM AND ROOM EXTENSION ARE BEING OPERATED.
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 IDENTIFICATION
This button will turn the system OFF but does
NOT control power to the "DUMP" or "RAISE" buttons.
This light will flash when the "DUMP" button
is being pushed.
This light will be on if the leveling
system can NOT level the coach.
This light will be on if the leveling system
is off and the ignition is in the "ON" or "ACC" position. See
"PREPARATION FOR TRAVEL".
These lights will function only with the ignition
key is in the "ON" or "ACC" position. They will be on if the system
is on.
One or two yellow lights can be on indicat-
ing the side, end or corner of the coach is low.
CONTROL BUTTONS
CONTROL FUNCTIONS
This light will be on if the "AIR"
This light will flash when the "RAISE" button
is being pushed.
button is pushed and the park brake is not set if the ignition
switch is in the "ON" position.
"LEVEL" BUTTON:
"OFF" BUTTON: DUMP LIGHT:
RAISE LIGHT:
"EXCESS SLOPE" LIGHT:
"TRAVEL" LIGHT:
WARNING LIGHTS:
LEVELING LIGHTS:
"NOT IN PARK/BRAKE" LIGHT:
"OFF" BUTTON
"EXCESS SLOPE"
LIGHT
"NOT IN PARK"
LIGHT
RAISE RIGHT SIDE BUTTON
LOWER RIGHT SIDE BUTTON
LEVELING LIGHTS
(4 - Yellow)
WARNING LIGHT
(4 - Red)
RAISE REAR BUTTON
LOWER REAR BUTTON
LEVEL LIGHT
DUMP LIGHT
"RAISE" BUTTON
"TRAVEL" LIGHT
This light will be on when the system is on, and
flash during automatic leveling.
INDICATOR LIGHTS
"LEVEL" BUTTON
CAUTION!
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
OFF RAISE
DUMP
TRAVEL
NOT IN
PARK/
HWH COMPUTERIZED LEVELING
LEVEL AIR EXCESS
SLOPE
BRAKE
"DUMP" BUTTON
RAISE LIGHT
RAISE LEFT SIDE
BUTTON LOWER LEFT SIDE BUTTON
RAISE FRONT BUTTON
LOWER FRONT BUTTON
LEVEL LIGHT:
"DUMP" BUTTON:
"RAISE" BUTTON:
This button is the system on button and
automatic operation button.
This button will raise the whole vehicle by
adding air to the suspension system.
This button will lower the whole vehicle by
exhausting air from the suspension system.
UP ARROWS (RAISE BUTTONS):
DOWN ARROWS (LOWER BUTTONS):
These momentary but-
tons are used for manually operating the air leveling systems.
Sides or ends of the vehicle will raise while these buttons are
pushed.
These momentary
buttons are used to manually operate the air leveling systems.
Sides or ends of the vehicle will lower while these buttons are
pushed.
MP25.4515
02AUG96

GENERAL INSTRUCTIONS
PREPARATION FOR TRAVEL
AIR OPERATION
AUTOMATIC AIR LEVELING
MANUAL AIR LEVELING
Press the "OFF" button at any time to stop the operation of
the system.
may return to travel height.
is not set, the "NOT IN PARK" light will come on and the system
will not operate when the "AIR" button is pressed. The "NOT IN
PARK" light will remain on only while the "AIR" button is pressed.
If the ignition is in the "ON" position and the hand/auto brake
The "DUMP" and "RAISE" buttons will function with the system
and park brake off if the ignition is "ON". See "AIR DUMP AND
RAISE FUNCTIONS".
Start the vehicle’s engine and allow air pressure to build to
the recommended level for traveling.
Before traveling, the red AIR BAG warning lights must be off
1. Set the hand/auto brake in the recommended position for
parking. Leave the engine running to provide air for leveling.
2. Press the "AIR" button once to enter the air mode. The AIR
indicator light and the four AIR BAG warning lights will glow steady.
3. Press the "AIR" button a second time. The AIR indicator
light will start flashing and the air leveling will begin.
4. When all four yellow LEVEL SENSING lights are out the
leveling is complete. The AIR indicator light will stop flashing
and turn steady red. The processor is now in a SLEEP MODE
for 30 minutes. The vehicle’s engine may now be turned off.
After 30 minutes the processor will recheck the vehicle level,
make any corrections required, and return to the SLEEP MODE.
This will continue until the system is turned off by pushing
the "OFF" button or the transmission is taken out of the parking
position and the park brake is released.
If the system was unable to level the vehicle, one or two yellow
LEVEL SENSING indicator lights will remain on and the "EXCESS
SLOPE" light will come on. The system will remain on but
will not go into SLEEP MODE.
1. Place the hand/auto brake in the recommended position
for parking. The engine should be running to provide air for
leveling.
2. Press the "AIR" button. The "AIR" indicator light will glow
steady.
3. Individual RAISE and LOWER buttons (UP and DOWN
ARROWS) will add or dump air from suspension air bags to
raise or lower coach for leveling. These are momentary buttons.
The function will stop when the button is released.
The yellow LEVEL lights indicate a side, end, or corner of
the coach is low. Lower the opposite side or end of the coach to
achieve leveling. If a level position cannot be achieved by dumping
air, raise the coach according to lit yellow "LEVEL" lights.
4. Turn ignition switch "OFF". Turn the system off.
CAUTION: DO NOT MOVE THE COACH WHEN THE
AIR BAG WARNING LIGHTS ARE ON.
IMPORTANT:
OPERATING PROCEDURES
MP35.4526
02SEP97
NOTE:
CAUTION:
EXCESS SLOPE
NOTE: If the ignition switch is "ON", the vehicle’s air suspension
The "RAISE" and "DUMP" buttons can be used at this
time, but the system will shut off after the button is released.
Always give preference to any side light before
leveling the coach front to rear.
NOTE: If the ignition key is not in the "ON" position, the level-
ing system cannot be turned on. Once the system is on, the
ignition key may be turned off.
DO NOT RELY SOLELY ON WARNING
INDICATORS. IT IS THE OPERATOR’S RESPONSIBILITY
TO CHECK THAT THE VEHICLE IS AT THE PROPER RIDE
HEIGHT BEFORE MOVING THE VEHICLE.
and the "TRAVEL" light must be on. If the vehicle will not return
to the proper ride height for traveling, see the BYPASS VALVE
SECTION.
IMPORTANT: The bypass valves must be closed (turned clock-
wise) for the air leveling system to function.

The "DUMP" and "RAISE" functions are provided for operator
convenience for purposes such as dumping air suspension
when parked in the wind, or raising or lowering the vehicle to
avoid obstacles. The "DUMP" and "RAISE" buttons will function
with the system on or off.
1. Leave the engine running if the "RAISE" function is to be
used. The park brake does not have to be set and the system
does not have to be on to use the "RAISE" or "DUMP" functions.
2. Press and hold the "RAISE" or "DUMP" button as desired
to raise or lower the vehicle. The system will remain in the
"RAISE" or "DUMP" mode as long as the button is held down.
When the button is released the system will automatically turn
turn off. If the ignition is in the "ON" position the suspension will
return to travel height.
3. If desired for clearing an obstacle, the vehicle may be moved
while in the "RAISE" or "DUMP" mode for a short distance at
a slow speed. Remember the vehicle will return to travel height
when the "RAISE" or "DUMP" button is released and the leveling
system is off.
ally turn off when the button is released. If the ignition is in
the "ON" position the suspension will return to travel height.
OPERATING PROCEDURES
MP35.4533
10JUL97
CAUTION: REREAD CAUTIONS ON THE FIRST PAGE
OF THIS MANUAL. THE VEHICLE MAY DROP OR RAISE
AND/OR MOVE FORWARD OR BACKWARD WITHOUT
WARNING CAUSING INJURY OR DEATH.
DO NOT OPERATE THE VEHICLE OVER 5 M.P.H. UNLESS
AIR SUSPENSION IS AT THE PROPER HEIGHT FOR TRAVEL.
AIR DUMP AND RAISE FUNCTIONS
IMPORTANT: "DUMP" and "RAISE" functions will automatic-
BYPASS VALVE OPERATION
(FOR TEMPORARY BYPASS OF LEVELING SYSTEM)
In case of a malfunction of the leveling system, opening these
valves will in most cases allow the vehicle suspension to return
to the proper ride height for traveling.
CAUTION: THE VEHICLE WILL RAISE OR LOWER
AS THE VALVES ARE OPENED. DO NOT CRAWL UNDER
THE VEHICLE TO ACCESS THE VALVES. MAKE SURE THERE
IS AMPLE ROOM TO OPEN THE VALVES SAFELY.
1. Locate the BYPASS valve T-handles. Refer to the AIR SOL-
ENOID MANIFOLD page in the Diagram Section. There is us-
ually one Air Solenoid Manifold for each axle on the vehicle.
2. Turn each T-handle counter-clockwise approximately two
turns. Make sure there is ample clearance when opening the
valves. Leave the valves open until the leveling system is re-
paired.
3. Check that the vehicle has returned to the proper ride height
before moving the vehicle.
NOTE: The leveling system will not function properly if a by-
pass valve is opened.
Call HWH Customer Service, 1-800-321-3494, Monday through
Friday, 8:00 a.m. to 5:00 p.m. Central time, for technical assist-
ance.
OPERATIONAL CHECK
Review the operator’s manual and check that all functions and
lights work correctly.
"NOT IN PARK/BRAKE" Check: Set hand/auto park brake.
Set the transmission in the recommended position for park-
ing the vehicle. Turn the ignition on. Push the "AIR" button on
the touch panel. Release the hand/auto park brake.
CAUTION: THE VEHICLE MAY MOVE FORWARD OR
BACKWARD WHEN THE PARK IS RELEASED.
NOTE: If any checks reveal any problems 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 assistance.
Check that the "NOT IN PARK/BRAKE" light comes ON. Re-
apply the park brake. The "NOT IN PARK/BRAKE" light should
go out.

OPERATING PROCEDURES
MP35.4543
10JUL97
LEVEL SENSING UNIT ADJUSTMENT
Level the vehicle by placing a circular bubble level in the center
are off. This is done by drawing up the corresponding screw if
With the vehicle level, adjust the sensing unit until all yellow lights
of the freezer floor or location within the vehicle that is to be level.
LEVEL SENSING UNIT
SURFACE
MOUNTING
BELOW THE SURFACE MOUNTING
SCREWS (3)
REAR
THIS
SIDE
STICKER
ON TOP
UP
SPRINGS (3)
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 has settled down in the level position.

12MAY99
OPERATING PROCEDURES
MP35.455C
ROOM EXTENSION AND GENERATOR SLIDE EXTEND PROCEDURE
CAUTION: OPERATING THE ROOM OR GENER-
ATOR SLIDE WITH ANY ROOM-LOCKING DEVICES LOCK-
ED OR THE MANUAL-RETRACT WINCH ATTACHED CAN
CAUSE PERSONAL INJURY AND VEHICLE DAMAGE. IT
IS THE OPERATOR’S RESPONSIBILITY TO ENSURE THAT
ALL ROOM-LOCKING DEVICES AND THE MANUAL-RETRACT
WINCH ARE DISENGAGED BEFORE OPERATING THE ROOM.
1. Remove any locking devices from the room extension or
generator slide.
CAUTION: KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF THE ROOM EXTENSION OR GENERATOR SLIDE.
NOTE: Make sure there is adequate clearance to fully extend
the room extension or generator slide.
2. Turn the ignition switch to "ACCESSORY"
NOTE: To operate the room extension or generator slide the
ignition key must be in the "ON" or "ACC" position. The level-
ing system does not have to be on and the vehicle does not
have to be level. The park brake must be set.
ROOM EXTENSION AND GENERATOR SLIDE RETRACT PROCEDURE
3. Push the ROOM EXTENSION or GENERATOR SLIDE
MASTER SWITCH to the "ON" position. Refer to the CON-
TROL IDENTIFICATION page.
4. To extend the room extension or generator slide, press and
hold the ROOM EXTENSION or GENERATOR SLIDE CON-
TROL SWITCH in the "EXTEND" position. When the room ex-
tension or generator slide is fully extended, release the CON-
TROL SWITCH.
IMPORTANT: Do not hold the CONTROL SWITCH in the "EX-
TEND" position for more than ten seconds after the room ex-
tension or generator slide is fully extended or stops moving.
IF EITHER SIDE OF THE ROOM EXTENSION OR GENER-
ATOR SLIDE STOPS MOVING, RELEASE THE CONTROL
SWITCH IMMEDIATELY.
NOTE: Releasing the CONTROL SWITCH will halt the oper-
ation of the room extension or generator slide.
5. Push the ROOM EXTENSION OR GENERATOR SLIDE
MASTER SWITCH to the "OFF" position.
6. Turn off the ignition switch.
CLEAR OF THE ROOM EXTENSION OR GENERATOR SLIDE.
CAUTION: KEEP PEOPLE AND OBSTRUCTIONS
1. Turn the ignition switch to "ACCESSORY".
2. Push the ROOM EXTENSION or GENERATOR SLIDE
MASTER SWITCH to the "ON" position.
NOTE: To retract the room extension or generator slide the
ignition key must be in the "ON" or "ACC" position and the park
brake must be set.
3. to retract the room extension or generator slide press and
hold the CONTROL SWITCH in the "RETRACT" position. When
the room extension or generator slide is fully retracted, release
the CONTROL SWITCH.
IMPORTANT: Do not hold the ROOM EXTENSION or GEN-
ERATOR SLIDE CONTROL SWITCH in the "RETRACT" po-
sition for more than ten seconds after the room extension or
generator slide is fully retracted or stops moving. IF EITHER
SIDE OF THE ROOM EXTENSION OR GENERATOR SLIDE
STOPS MOVING, RELEASE THE CONTROL SWITCH IM-
MEDIATELY.
NOTE: Releasing the CONTROL SWITCH will halt the op-
eration of the room extension or generator slide.
4. Push the ROOM EXTENSION or GENERATOR SLIDE
MASTER SWITCH to the "OFF" position.
5. Turn the ignition switch off.
6. If the room extension or generator slide will not retract see
the MANUAL ROOM RETRACT PROCEDURE.
IMPORTANT: Room-locking devices should be locked while
traveling.

MP35.9490
02FEB12
MANUAL ROOM RETRACT PROCEDURE
1. Retract jacks following the LEVELING SYSTEM RETRACT
PROCEDURE.
2. Locate the HYDRAULIC PUMP/MANIFOLD unit.
3. Open the SOLENOID VALVES by turning the "T" HANDLES
counterclockwise.
will become more difficult to turn as an internal spring is
compressed. Be sure to open both valves completely
(about six turns of the "T" HANDLE).
are opened and internal pressure is released.
SOLENOID VALVES
"T"
HANDLES
(USE ONLY WHEN THE ROOM WILL NOT RETRACT WITH THE ROOM CONTROL SWITCH)
WINCH
WINCH STRAP
WINCH HANDLE
RATCHET LEVER
HOOK
MANUAL RETRACT WINCH
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 counterclockwise, 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.
5. Slowly winch the room in by turning the WINCH HANDLE
clockwise. The RATCHET LEVER should produce a loud, sharp,
clicking noise.
hydraulic fluid and make winching more difficult.
WARNING:
ON
OFF
HYDRAULIC PUMP/MANIFOLD
NOTE :
The room may move slightly as the SOLENOID VALVES
NOTE : NOTE : Winching the room in quickly will raise pressure in the
NOTE : The "T" HANDLE may turn easily at first but
6. When the room is fully retracted, engage the room locking
devices. Leave the retract winch in place.
WARNING: THE ROOM EXTENSION SOLENOID VALVE
"T" HANDLES MUST BE IN THE OPEN POSITION WHEN THE
MANUAL RETRACT WINCH IS ENGAGED.
7. The system should be repaired before using again.
WARNING: THE MANUAL RETRACT WINCH IS
EQUIPPED FOR MANUALLY RETRACTING THE ROOM
ONLY. IT IS NOT TO BE USED FOR LIFTING OR ANY
When manually retracting the room, make sure the
jacks are retracted before retracting the room.
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
OPERATE THE MANUAL RETRACT WINCH
BY HAND POWER ONLY. IF THE WINCH CANNOT BE
CRANKED EASILY WITH ONE HAND IT IS PROBABLY OVER-
LOADED. IF WINCHING BECOMES TOO DIFFICULT STOP
AND CHECK FOR OBSTRUCTIONS OR RESTRICTIONS ON
THE ROOM AND ROOM EXTENSION MECHANISM.
(WITH SOLENOID VALVES WITH VALVE RELEASE "T" HANDLES)
failure prevents the room from being retracted using the
CONTROL SWITCH. For normal retract sequence see the
ROOM SLIDE RETRACT PROCEDURES.
vehicle manufacturer for storage location of the
retract device and information for connecting the
device to the room.
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
OVERVIEW
Refer to the
OR WORN.

MP65.300F
30MAY02
HYDRAULIC CYLINDER
HYDRAULIC CYLINDER
DUAL CYLINDER ROOM EXTENSION
CAP END
CAP ENDROD END
ROD END
HYDRAULIC CONNECTION DIAGRAM
TWO DUAL CYLINDER ROOM EXTENSIONS
WITH SYNCHRONIZING CYLINDERS
VALVE RELEASE
"T" HANDLES
STEEL TUBE
STEEL TUBE
HIGH PRESSURE LINE
HIGH PRESSURE LINE
SYNCHRONIZING CYLINDER
SYNCHRONIZING CYLINDER
HIGH PRESSURE LINE
HIGH PRESSURE LINE
STEEL TUBE
STEEL TUBE
HYDRAULIC CYLINDER
HYDRAULIC CYLINDER
CAP END
ROD END
ROD END
CAP END
DUAL CYLINDER ROOM EXTENSION
NOTE: HOSE
CONNECTIONS FOR
ROOM CYLINDERS ARE
MADE AT THE END OF
THE ROOM EXTENSION
TUBES.
NOTE: LEVELING SYSTEM
MANIFOLD NOT SHOWN
IMPORTANT:THE HOSES BETWEEN THE
STEEL TUBES (ROD END) OF THE HYDRAULIC
CYLINDERS AND THE SYNCHRONIZING
CYLINDER MUST BE THE SAME LENGTH
AND DIAMETER. THESE HOSES MUST BE
HIGH PRESSURE HOSES.
THE HOSES BETWEEN THE CAP END OF THE
HYDRAULIC CYLINDERS AND THE TEE MUST BE
THE SAME LENGTH AND DIAMETER.
HOSE CONNECTION
CAP END 1/4"
CONNECTION
PRESSURE HOSE
ROD END 3/16" HIGH
V
I
E
W
A
VIEW A
TEE
TEE
2R
2E
1R
1E

HYDRAULIC FLOW DIAGRAM
MP65.9455
10NOV03
FIXED TO
VEHICLE
FRONT CYLINDER
VERTICAL ARM OR DUAL CYLINDER ROOM EXTENSION
REAR CYLINDER
VEHICLE
FIXED TO
STATIONARY POSITION
PRESSURE
RETURN
SYNCHRONIZING CYLINDER
SYNCHRONIZING
VALVE
SYNCHRONIZING
VALVE
WITH SYNCHRONIZING CYLINDER
EXTEND
CYLINDER
VALVE RETRACT VALVE
CYLINDER

DIAGRAM
MP75.011C
12MAY99
FRONT
HEIGHT CONTROL
VALVE (3-PLACES)
MANIFOLDS ARE MOUNTED TO MAIN
CROSS MEMBERS. LEAVE AMPLE
CLEARANCE FOR CONNECTION OF
HOSES TO FITTINGS.
V
C
FRONT MANIFOLD
EXISTING AIR LINE
AIR BAG
SUSPENSION TANK
CV
AIR LINE CONNECTION
REAR MANIFOLD LINE FROM HEIGHT
CONTROL VALVE
AIR SUPPLY
LINE TO AIR BAGS
CV
BYPASS
VALVE
BYPASS
VALVE
BYPASS VALVE
BYPASS
VALVE

SUSPENSION
TANK
EXH EXH
AIR
BAG AIR
BAG
FRONT MANIFOLD ASSEMBLY
EXHEXH
RF HCVLF HCV TRAV.
LOWER
RAISE
TRAV.
LOWER
RAISE
4-POINT LEVELING
PRESSURE SWITCHES FRONT AND REAR
MP75.012C
19MAY97
RAISE
LOWER
TRAV.
RAISE
LOWER
TRAV.
EXH EXH
BAG
AIR BAG
AIR
AIR LEVEL SCHEMATIC
RAISE RAISE
REAR MANIFOLD ASSEMBLY
EXH
BAG
AIR LOWER
TRAV.
LOWER
TRAV.
EXH
BAG
AIR
(HCV)
CONTROL VALVE
REAR HEIGHT
EXH
SEE AIR
COMPRESSOR
DIAGRAM
BYPASS
VALVE
BYPASS
VALVE
BYPASS
VALVE
VALVE
BYPASS

RAISE
TRAVEL
LOWER
LOWER
TRAVEL
RAISE
PRESS SW
PRESS SW
TRAVEL SOLENOID
VALVE (2) RIGHT & LEFT
LOWER SOLENOID
VALVE (2) RIGHT& LEFT
RAISE SOLENOID
VALVE (2) RIGHT & LEFT
MOUNTING HOLES
LINE FROM HEIGHT
CONTROL VALVE (2 MAY BE
TEE’D TOGETHER IF ONE
HCV IS USED)
PRESSURE SWITCH (2)
EXHAUSTS PORT (2)
LINE TO AIR BAGS
(LEFT & RIGHT)
AIR SUPPLY (1)
CHECK VALVE (2)
MP75.471C
13MAY99
CONTROL VALVE
LINE FROM HEIGHT
PRESSURE SWITCH
CHECK VALVE
AIR SUPPLY
LINE TO AIR BAGS
REAR VIEW
SIDE VIEW
BYPASS
VALVE
BYPASS VALVE
(2-LEFT & RIGHT)
AIR SOLENOID MANIFOLD
6 VALVE WITH TWO PRESSURE SWITCHES
AND BY-PASS VALVES
3.400"

RAISE
TRAVEL
LOWER
LOWER
TRAVEL
RAISE
PRESS SW
TRAVEL SOLENOID
VALVE (2) RIGHT & LEFT
LOWER SOLENOID
VALVE (2) RIGHT& LEFT
RAISE SOLENOID
VALVE (2) RIGHT & LEFT
MOUNTING HOLES
LINE FROM HEIGHT
CONTROL VALVE (2 MAY BE
TEE’D TOGETHER IF ONE
HCV IS USED)
EXHAUSTS PORT (2)
LINE TO AIR BAGS
(LEFT & RIGHT)
AIR SUPPLY (1)
CHECK VALVE (2)
MP75.472C
13MAY99
CONTROL VALVE
LINE FROM HEIGHT
CHECK VALVE
AIR SUPPLY
LINE TO AIR BAGS
REAR VIEW
SIDE VIEW PRESSURE SWITCH
BYPASS VALVE
(2-LEFT & RIGHT)
AIR SOLENOID MANIFOLD
6 VALVE WITH ONE PRESSURE SWITCH
AND BY-PASS VALVES
3.400"
BYPASS
VALVE

AIR COMPRESSOR DIAGRAM
12 VOLT RELAY (2)
AIR FILTER
(OPEN AT 115 PSI)
(CLOSED AT 105 PSI)
NORMALLY CLOSED
PRESSURE SWITCH (1)
14FEB02
MP75.9555
AIR LINE TO SUSPENSION
CHECK VALVE (4)
FROM AIR
SOLENOID
+12 SIGNAL FROM
PRESSURE SWITCH
GROUND
FLOW
GROUND TO RELAY MOUNTING BOLT
TO +12 BATTERY
POWER - 6100
FUSE
15 AMP
NORMALLY OPEN
AIR SOLENOID (3)
COMPRESSOR HARNESS
FROM CONTROL BOX - 9700
The control box sends a +12 signal to the normally closed pressure switch (1). If the pressure is low, the 12 volt relay (2) will
energize and the compressor will run. The normally open air solenoid (3) will close allowing the compressor to build pressure.
When the pressure builds to 115 psi the procure switch will open, stopping the air compressor. The normally open air solenoid
(3) will open, allowing internal pressure & moisture to bleed off. The check valve (4) will keep the suspension air from bleeding
back to the compressor. As air pressure drops below 105 psi the compressor will start.

REAR AIR PRESS SW - (YELLOW) 3215
LEFT REAR LOWER - (PURPLE) 4600
LEFT REAR RAISE - (GREEN) 4500
RIGHT REAR LOWER - (BROWN) 3600
RIGHT REAR RAISE - (ORANGE) 3500
BATTERY - (RED) 6100
IGNITION - (YELLOW) 6110
ACCESSORY - (BROWN) 6120
PARK BRAKE SENSOR - (BLUE) 9000
WHITE-(GROUND)
YELLOW-LEFT SIDE
BLACK-FRONT
GREEN-RIGHT SIDE
RED-REAR
PARK
BRAKE
POWER
HARNESS
REAR AIR HARNESS
600 SERIES CONTROL BOX
MP85.4517
12MAR99
15
15
15
15
15
15
15
15
5
5
5
5
5
5
5
5
5
7.5
COMPRESSOR - (BROWN) 9700
COMPRESSOR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
3 BATTERY
4 IGNITION
5 ACC
6 RIGHT REAR LOWER
7 LEFT REAR LOWER
8 LEFT REAR RAISE
9 RIGHT REAR RAISE
10 LEFT FRONT RAISE
11 LEFT FRONT LOWER
12 TRAVEL
13 N/A
14 N/A
15 N/A
16 N/A
17 N/A
18 N/A
19 N/A
20 N/A
FUSE DESIGNATION
5
5
RIGHT FRONT RAISE - (YELLOW) 2500
RIGHT FRONT LOWER - (BLUE) 2600
LEFT FRONT RAISE - (GREEN) 1500
LEFT FRONT LOWER - (RED) 1600
FRONT TRAVEL - (GRAY) 1700
19
20
1 RIGHT FRONT LOWER
2 RIGHT FRONT RAISE
CONNECTION DIAGRAM
WITH 4-POINT AIR LEVELING
LF AIR PRESSURE SW - (BLACK) 1210
RF AIR PRESSURE SW - (ORANGE) 2210
REAR TRAVEL SOLENOID - (GRAY) 3700
LEVEL SENSING
UNIT INPUTS
FRONT AIR HARNESS
PRESSURE SW. INPUTS
FROM FRONT AIR HARNESS
(GROUND SIGNAL)
#10 WIRE GROUND TO
FRAME RAIL
GROUND WIRES FROM
FRONT AIR HARNESS (2) - 6254
GROUND WIRES
FROM REAR AIR
HARNESS (2) - 6258
MODULAR CABLE
FROM TOUCH PANEL
MASTER WARNING INDICATOR
OUTPUT FROM POWER
HARNESS - (PURPLE) 7699
NOTE: THE FOUR DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE
COLORS.

SEE CONTROL
BOX DIAGRAM
SENSING
ELECTRICAL CONNECTION
AIR LEVELING SYSTEM
(WITH TOUCH PANEL CONTROL)
MP85.471C
13MAY99
DUMP
LEVEL
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
CAUTION!
OFF
NOT IN
TRAVEL
EXCESS
SLOPE
PARK/
BRAKE
RAISE
AIR
COMPUTERIZED LEVELING
PARK BRAKE
PIGTAIL - 9000
TO BRAKE LIGHT
ON DASH PARK BRAKE SWITCH
UNIT
MODULAR
CABLE
TOUCH PANEL
GROUND STUD
FRONT AIR
MANIFOLD
REAR AIR MANIFOLD
HARNESS
HARNESS
GROUND
STUD
FRAME
RAIL
3/8" INT STAR
LOCKWASHERS (4)
TO AUX. AIR COMPRESSOR
SEE AIR COMPRESSOR
DIAGRAM -
9700
#10 GROUND TO
TRAVEL -
1700
LF AIR PRESS.
SW. - 1210
LF LOWER -
1600
LF RAISE -
1500
RF AIR PRESSURE
SWITCH - 2210
RF LOWER - 2600
RF RAISE - 2500
BATT. -
6100
IGN. -
6110
ACC. -
6120
TRAVEL -
1700
TRAVEL - 3700
PRESS. SWITCH -
3215
LR LOWER -
4600
LR RAISE -
4500
TRAVEL - 3700
RR LOWER -
3600
RR RAISE -
3500
FRAME
6258
6254
SEE AIR SOLENOID
MANIFOLD DIAGRAM
W/1 PRESSURE SWITCH
SEE AIR SOLENOID
MANIFOLD DIAGRAM
W/2 PRESSURE SWITCHES
POWER
HARNESS
TO MASTER
WARNING
INDICATOR
7699

MP85.472C
13MAY99
BLACK ( GROUND )
RED +12
GROUND
WHITE
GRAY (GROUND)
GRAY (+12 SIGNAL)
15 AMP
+12 VOLT
BATTERY POWER
NORMALLY OPEN
12 VOLT AIR SOLENOID
12 VOLT
ESSEX
RELAY
BROWN +12
ORANGE
PRESSURE SWITCH (D)
OPEN 115 PSI
CLOSE 105 PSI
COMPRESSOR
HARNESS FROM
CONTROL BOX
+12 SIGNAL - (BLACK OR BROWN) 9700
COMPRESSOR MOTOR FUSE
15 AMP
(E)
RELAY MTG. BOLT (C)
(RED) 6100
ELECTRICAL CONNECTION DIAGRAM
AIR COMPRESSOR
NOTE:THE (4) DIGIT WIRE NUMBER
SUPERSEDES ANY AND ALL WIRE
COLORS.

CONNECTION
NO
DETAIL A
VIEW FROM PUMP END
ELECTRICAL CONNECTION DIAGRAM
GENERATOR SLIDE SYSTEM
WIRE COLORS TO
GENERATOR SLIDE
SOLENOID VALVE -
EXTEND SOLENOID
A & B ON PACKARD
PUMP RELAY
EXTENSION
DIAGRAM ROOM
CONNECTION
SEE ELECTRICAL
5100
SLIDE
RETRACT
6245
GENERATOR
VALVE -
CONNECTORS
8602
6810
A
B
5000
6245
RR
B
A
GR
GE RE
DO NOT REVERSE
ORANGE (2)
FROM IGNITION -
PUMP CONTROL - GRAY (1&3)
RETRACT SWITCH
ROOM EXTEND/
2 5
3 6
8 7
1 4
RETRACT SOLENOID
SWITCHES BY O.E.M.
EXTENSION
VALVE - ROOM
BLACK (4)
RETRACT -
RED
3 6
2 5
1 4
8 7
RED (2)
BATTERY -
SWITCHED
SWITCH
ROOM ON/PFF
5000
DIAGRAM GROUNDING
SLIDE CONTROL
HWH GENERATOR
13MAY99
MP85.473C
CONNECTION
SEE ELECTRICAL
6245 INSTRUCTIONS
CONNECTION INFORMATION
SYSTEM FOR CORRECT
DIAGRAM ROOM EXTENSION
SEE ELECTRICAL CONNECTION
ROOM EXTENSION
EXTEND SOLENOID VALVE
ROOM EXTENSION
"T" HANDLE
VALVE RELEASE
CONNECTION
NO
MANIFOLD
HARNESS
JACK INTERRUPT
EXTEND -
BATTERY -
SWITCHED
RETRACT -
(6 PIN FEMALE)
SEE DETAIL A
WITH A HWH HYDRAULIC
VEHICLE IS EQUIPPED
EXTEND - YELLOW (6)
RETRACT - BLACK (4)
LEVELING SYSTEM
CONTROL -
PUMP
8601
ONLY USED IF THE
INTERRUPT IS
THE JACKNOTE:
6810
5100
8601
BY O.E.M.
HARNESS
FROM CONTROL

ROOM EXTENSION SYSTEM
ELECTRICAL CONNECTION DIAGRAM
VIEW FROM PUMP END MP85.474C
13MAY99
SEE GROUNDING
INSTRUCTIONS
6245
A
B
A
B
8 7
1 4
2 5
3 6
3 6
2 5
1 4
8 7
ROOM EXTEND/
RETRACT SWITCH ROOM ON/PFF SWITCH
FROM CONTROL
HARNESS
BY O.E.M.
RETRACT - BLACK (4)
PUMP CONTROL - GRAY (1&3)
EXTEND - YELLOW (6)
RETRACT -
BLACK (4)
SWITCHED
BATTERY -
RED (2)
RED
FROM IGNITION -
ORANGE (2) SWITCHES BY O.E.M.
SEE DETAIL A
(6 PIN FEMALE)
DO NOT REVERSE
WIRE COLORS TO
A & B ON PACKARD
CONNECTORS
RETRACT -
5100
SWITCHED
BATTERY -
6810
EXTEND -
5000
PUMP
CONTROL -
7541
DETAIL A
NO
CONNECTION
NO
CONNECTION
RETRACT SOLENOID
VALVE - ROOM
EXTENSION
EXTEND SOLENOID
VALVE -
GENERATOR
SLIDE
RETRACT
SOLENOID VALVE -
GENERATOR SLIDE
SEE ELECTRICAL
CONNECTION
DIAGRAM GENERATOR
SLIDE SYSTEM FOR
CORRECT
CONNECTION
INFORMATION
GR
GE
RR
RE
VALVE RELEASE
"T" HANDLE
ROOM EXTENSION
MANIFOLD
EXTEND SOLENOID VALVE
ROOM EXTENSION
HWH ROOM
CONTROL
HARNESS
5000
6245
6245
5100
SEE ELECTRICAL
CONNECTION
DIAGRAM ROOM
EXTENSION
PUMP RELAY
6810
8602
NOTE: THE JACK
INTERRUPT IS
ONLY USED IF THE
VEHICLE IS EQUIPPED WITH A
HWH HYDRAULIC LEVELING SYSTEM.