HWH HYDRAULIC SPACEMAKER User manual

H
CORPORATION
H
W
R
AP28873
www.hwh.com
Ph: 800/321-3494 (or) 563/724-3396 | Fax: [phone]
2096 Moscow Road | Moscow, Iowa 52760
(On I-80, Exit 267 South)
HWH CORPORATION
ML28874/MP05.9450
22SEP03
Single Cylinder Generator Slide
FEATURING:
(With Synchronizing Cylinders)
Three Dual Cylinder Room Extensions
HWH HYDRAULIC SPACEMAKER
ROOM EXTENSION SYSTEMS
OPERATOR’S MANUAL
R R

CAUTION !
OPERATOR’S MANUAL
MP15.9404
30MAY01
READ THE ENTIRE OPERATOR’S MANUAL BEFORE OPERATING.
KEEP PEOPLE AND OBSTRUCTIONS CLEAR OF ROOMS OR GENERATOR SLIDE WHEN OPERATING.
ANY OBJECT OBSTRUCTING MOVEMENT MAY BE CRUSHED CAUSING INJURY OR DEATH AND VEHICLE
DAMAGE.
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.
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.

OPERATING PROCEDURES
MP35.940K
04SEP03
ROOM EXTEND PROCEDURE
CAUTION:
1. Unlock all room-locking devices.
room remove it before extending the room.
CAUTION:
extend the room.
4. To extend the room, press and hold the
ROOM CONTROL SWITCH in the "EXTEND" position
until the room is fully extended.
the operation of the room.
ROOM RETRACT PROCEDURE
3. To retract the room press and hold the
ROOM CONTROL SWITCH in the "RETRACT" position
until the room is fully retracted.
the operation of the room.
4. Engage all room-locking devices.
IMPORTANT: Room-locking devices should be
locked while traveling.
OPERATING THE ROOM WITH ANY
ROOM-LOCKING DEVICES LOCKED 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.
KEEP PEOPLE AND OBSTRUCTIONS
CLEAR OF ROOM WHEN OPERATING.
3. The bay doors under the room extension must be closed.
CAUTION:
CLEAR OF ROOM WHEN OPERATING.
KEEP PEOPLE AND OBSTRUCTIONS
5. If the room will not retract see the MANUAL ROOM
RETRACT PROCEDURE.
NOTE:
NOTE:
NOTE:
NOTE:
If the MANUAL RETRACT WINCH is attached to the
Make sure there is adequate clearance to fully
Releasing the ROOM CONTROL SWITCH will halt
Releasing the ROOM CONTROL SWITCH will halt
IMPORTANT:
set, and the ignition is in the "ON" or "ACC" Position.
2. The bay doors under the room extension must be closed.
Do not operate the room extension unless the
vehicle is at the proper ride height and the leveling jacks are
retracted. If the vehicle is equipped with HWH air leveling,
the vehicle should be level before operating the room.
retracted. If the vehicle is equipped with HWH air leveling,
the vehicle should be level before operating the room.
vehicle is at the proper ride height and the leveling jacks are
Do not operate the room extension unless theIMPORTANT:
2. Apply the parking brake, the ignition switch must be OFF.
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.
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 SWITCHIMPORTANT:
NOTE: The room will not operate if the parking brake is not
1. Make sure the parking brake is applied.
The room will not operate if the parking brake is not
set, and the ignition is in the "ON" or "ACC" Position.
NOTE:
room may be reversed, but watch for binding of the room.
retract the room until the room has been fully extended.
If the direction of the room has been reversed, DO NOT
room is fully retracted. If necessary, the direction of the
the room, do not reverse direction of the room until the
Hold the switch to "RETRACT" three or four seconds
after the room is fully retracted. This assures proper
pressurization of the cylinders.
NOTE:
During normal operation of
The ignition switch must be OFF.

OPERATING PROCEDURES
MP35.940T
23JUL01
GENERATOR SLIDE EXTEND PROCEDURE
CAUTION:
CLEAR OF SLIDE WHEN OPERATING.
NOTE:Make sure there is adequate clearance to fully extend
the slide.
2. 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 CONTROL 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
2. 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 CONTROL SWITCH.
than ten seconds after the slide is fully retracted or stops
CONTROL SWITCH in the "RETRACT" position for more
Do not hold the GENERATOR SLIDEIMPORTANT:
Releasing the GENERATOR SLIDE CONTROL
SWITCH will halt the operation of the slide.
NOTE:
3. If the slide will not retract see the MANUAL SLIDE
RETRACT PROCEDURE.
KEEP PEOPLE AND OBSTRUCTIONS
1. THE PARK BRAKE MUST BE SET FOR THE SLIDE TO
OPERATE.
THE PARK BRAKE MUST BE SET FOR THE SLIDE TO1.
OPERATE.
NOTE: There is a GENERATOR SLIDE CONTROL SWITCH
on the dash and also in the front electrical bay.
NOTE: There is a GENERATOR SLIDE CONTROL
SWITCH on the dash and also in the front electrical bay.
DO NOT FORCE THE SLIDE.
moving. DO NOT FORCE THE SLIDE.

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.

MP45.3104
03SEP03
MAINTENANCE
OIL LEVEL
It is important that the front room and the generator slide
are fully retracted before checking the hydraulic oil level.
The two rear slides should be fully extended. To check
the oil supply, remove the breather cap from the top of
the hydraulic oil reservoir. The oil level should be
approximately one inch below the top of the reservoir
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:
when adequately filled.

BREATHER CAP - DIPSTICK - 1/4" NUT DRIVER
MP85.999X
10JAN07
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.
turn counter clockwise. Damage
NOTE: DO NOT turn the valve
release nut more than 1 full
PLASTIC PLUG
REMOVE TO
GAIN ACCESS
TO THE 1/4"
VALVE RELEASE
NUT
SOLENOID VALVE
2 1/4" DIAMETER