Lippert Components Wheel Hydraulic Slideout User Manual

LIPPERT

5TH WHEEL HYDRAULIC SLIDEOUT AND

LANDING GEAR (HLG) SYSTEM

OPERATION AND SERVICE MANUAL

COMPONENTS

TABLE OF CONTENTS

SYSTEM……………………………………………........….…..

Warning…………………………………........……....

Prior to Operation…………………….......………

Description………………………………........……..

Preventative Maintenance……….......………..

System Maintenance....................................

OPERATION-SLIDEOUTS………….……........……………

Warning.........................................................

Extending Slideout Room….............………….

Retracting Slideout Room…….............……...

Slideout Diagram..........................................

Auxiliary Operation…………….......................

OPERATION-HYDRAULIC LANDING GEAR...............

Warning.........................................................

SERVICE…………………………..………………........………

Filling Procedures........................................

Adjustment Instructions……….......…………..

Syncronizing System...................................

Replacing Actuator......................................

Troubleshooting…………………….........………

Plumbing Diagram……….……….….......………

Manifold Diagram………..……….….......………

Wiring Harness Diagram..………………………

Switch Diagram...........................................

Ordering Parts.............................................

3
3
4
4
5
6

8
8
9

9
10
12

13
13

14
14
15
18
19
20
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26
28
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SYSTEM

WARNING

FAILURE TO ACT IN ACCORDANCE WITH THE FOLLOWING MAY

RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

THE LIPPERT HYDRAULIC SLIDEOUT AND HLG SYSTEM IS INTENDED FOR
THE PURPOSES OF EXTENDING AND RETRACTING THE SLIDEOUT ROOM
AND LEVELING THE UNIT. THE USE OF THIS SYSTEM FOR ANY REASON
OTHER THAN WHICH IT IS INTENDED IS PROHIBITED BY LIPPERT’S LIMITED
WARRANTY AND MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

THE LIPPERT HYDRAULIC SLIDEOUT AND HLG SYSTEM IS DESIGNED AS A
“SLIDEOUT” AND “LEVELING” SYSTEM AND SHOULD NOT BE USED TO
PROVIDE SERVICE FOR ANY REASON UNDER THE COACH SUCH AS
CHANGING TIRES OR SERVICING THE LEVELING SYSTEM.

LIPPERT COMPONENTS, INC. RECOMMENDS THAT A TRAINED
PROFESSIONAL BE EMPLOYED TO CHANGE THE TIRE ON THE COACH.
ANY ATTEMPTS TO CHANGE TIRES OR PERFORM OTHER SERVICE WHILE
COACH IS SUPPORTED BY THE LIPPERT HYDRAULIC SLIDEOUT AND HLG
SYSTEM COULD RESULT IN DAMAGE TO THE COACH AND/OR CAUSE
SERIOUS PERSONAL INJURY OR DEATH.

WARNING! – BE SURE TO PARK THE COACH ON SOLID, LEVEL GROUND.

WARNING! – CLEAR ALL JACK LANDING LOCATIONS OF DEBRIS AND
OBSTRUCTIONS. LOCATIONS SHOULD ALSO BE FREE OF
DEPRESSIONS.

WARNING! – WHEN PARKING THE COACH ON EXTREMELY SOFT
SURFACES, UTILIZE LOAD DISTRIBUTION PADS UNDER EACH
JACK.

WARNING! - PEOPLE AND PETS SHOULD BE CLEAR OF COACH WHILE
OPERATING LEVELING SYSTEM.

WARNING! – BE SURE TO KEEP HANDS AND OTHER BODY PARTS CLEAR
OF FLUID LEAKS. OIL LEAKS IN THE LIPPERT HYDRAULIC

SLIDEOUT AND HLG SYSTEM MAY BE UNDER HIGH PRESSURE
AND CAN CAUSE SERIOUS SKIN PENETRATING INJURIES.

WARNING! - NEVER LIFT THE COACH COMPLETELY OFF THE GROUND.
LIFTING THE COACH SO THE WHEELS ARE NOT TOUCHING
GROUND WILL CREATE AN UNSTABLE AND UNSAFE CONDITION.

3

PRIOR TO OPERATION

The leveling system shall only be operated under the following conditions:

1. The coach is parked on a reasonably level surface.

2. Be sure all person, pets and property are clear of the coach while Lippert
Hydraulic Slideout and HLG System is in operation.

3. Unit must be leveled prior to extending the slideouts to ensure coach will
not move during operation of Slideout System and to provide the unit with a
firm foundation.

4. Be sure battery is fully charged.

SYSTEM DESCRIPTION

Please read and study the operating manual before you operate the leveling
system.

The Lippert Hydraulic Slideout and HLG System is an electric/hydraulic system. A
12V DC electric motor drives a hydraulic pump that moves fluid through a system
of hoses, fittings and jacks to level and stabilize the coach as well as extend and
retract the slideout rooms. The Lippert HLG portion of this system is a rack &
pinion guide system, utilizing a hydraulic actuator to move the room assembly.
The power unit drives the cylinder rod in a forward and backward motion to drive
the slide room in and out. The Lippert Hydraulic Slideout and HLG System is
designed to operate as a negative ground system.

There are no serviceable parts within the electric motor. If the motor fails, it must
be replaced.

Disassembly of the motor voids the warranty.

Mechanical portions of the Lippert Hydraulic Slideout and HLG System are
replaceable. Contact Lippert Components, Inc. to obtain replacement parts.

COMPONENT DESCRIPTION The Lippert Hydraulic Slideout and HLG System
consists of the following major components:

Lippert leveling jacks and slideout cylinders are rated at capacities appropriate for
your coach.

Each jack and cylinder is powered from a central 12VDC motor/pump assembly,
which also includes the hydraulic oil reservoir tank, control valve manifold, and
solenoid valves.

The Lippert Hydraulic Slideout and HLG System is controlled electronically from
switches near the pump for the leveling and from a control panel inside the unit
for the slideouts.

4

PREVENTATIVE MAINTENANCE PROCEDURES

The Lippert Hydraulic Slideout and HLG System has been designed to require very
little maintenance. To ensure the long life of your system, read and follow these
few simple procedures.

1. Change fluid every 36 months (in reservoir ONLY!).
a) Check fluid only when jacks and slideouts are fully retracted.
b) Always fill the reservoir with the jacks and slideouts are in the fully retracted

position. Filling reservoir when jacks and slideouts are extended will cause
reservoir to overflow into its compartment when jacks and slideouts are
retracted.

c) When checking fluid level, fluid should be within 1/2” of fill spout lip.

2. Check the fluid level every month.

3. Inspect and clean all Pump Unit electrical connections every 12 months.

4. Remove dirt and road debris from jacks and slideout arms and cylinders as

needed.

WARNING!

YOUR COACH SHOULD BE SUPPORTED AT BOTH FRONT AND REAR

AXLES WITH JACK STANDS BEFORE WORKING UNDERNEATH.

FAILURE TO DO SO MAY RESULT IN PERSONAL INJURY OR DEATH.

5. If jacks are down and/or slideouts are extended for lengthy periods, it is

recommended to spray exposed jack and cylinder rods with a silicone lubricant
every seven days for protection. If your coach is located in a salty environment, it

is recommended to spray the rods every 2 to 3 days.

IF YOU HAVE ANY PROBLEMS OR QUESTIONS CONSULT YOUR LOCAL

AUTHORIZED DEALER OR CALL LIPPERT AT:

[phone].

WARNING!

DO NOT WORK ON YOUR SLIDEOUT SYSTEM UNLESS THE BATTERY IS

DISCONNECTED. FAILURE TO ACT IN ACCORDANCE WITH THE

FOLLOWING MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

5

SYSTEM MAINTENANCE

The Lippert Hydraulic Slideout and HLG System has been static tested to over
6,000 continuous cycles with out any noticeable wear to rotating or sliding parts.
It is recommended that when operating in harsh environments (road salt, ice
build up, etc.) the moving parts be kept clean and can be washed with mild soap
and water. No grease or lubrication is necessary and in some situations may be
detrimental to the environment and long term dependability of the system.

ELECTRICAL SYSTEM MAINTENANCE

For optimum performance, the system requires full battery current and voltage.
The battery must be maintained at full capacity. Other than good battery
maintenance, check the terminals and other connections at the battery, the
control switch, and the electric actuator motor for corrosion, and loose or
damaged terminals. Check motor leads under the trailer chassis. Since these
connections are subject to damage from road debris, be sure they are in good
condition.

Note: The Lippert Hydraulic Slideout and HLG System is designed to operate as
a negative ground system. A negative ground system utilizes the chassis frame
as a ground and an independent ground wire back to battery is necessary (see
page 19 for wiring diagram). It is important that the electrical components have
good wire to chassis contact. Over 90% of unit electrical problems are due to
bad ground connections.

MECHANICAL SYSTEM MAINTENANCE

Although the system is designed to be almost maintenance free, actuate the
slideouts and jacks once or twice a month to keep the seals and internal moving
parts lubricated.

Check for any visible signs of external damage or “leakage” before and after
movement of the unit.

When the room is out, visually inspect the Inner and Outer Assemblies of the
slideout. Refer to Fig. 1 for location of inner assemblies. Also inspect around
the shoe of the leveling jacks for signs of leakage. Check for excess build-up of
dirt or other foreign material; remove any debris that may be present.

If the system squeaks or makes any noises it is permissible to apply a coat of
lightweight oil to the drive shaft and roller areas of the slideout only but remove
any excess oil so dirt and debris do not build-up. DO NOT USE GREASE.

NOTE: For long-term storage: It is recommend that the room be closed
(retracted).

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Note: The Lippert Hydraulic Slideout and HLG System is designed to operate as a
negative ground system. A negative ground system utilizes the chassis frame as
the ground source. An independent ground wire back to the battery is not
needed. It is important the electrical components have good wire to chassis
contact. Over 90% of unit electrical problems can be attributed to bad ground
connections.

Note: For long-term storage: It is recommended that the room be closed
(retracted) and if your unit is equipped with the IRC room control, it is
recommended all of the control knobs be kept in the closed position.

IF YOU HAVE ANY PROBLEMS OR QUESTIONS CONSULT YOUR LOCAL

AUTHORIZED DEALER OR CALL LIPPERT AT:

[phone].

7

OPERATION-HYDRAULIC SLIDEOUT

WARNING

FAILURE TO ACT IN ACCORDANCE WITH THE FOLLOWING MAY
RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

ALWAYS MAKE SURE THAT THE SLIDEOUT ROOM PATH IS CLEAR OF
PEOPLE AND OBJECTS BEFORE AND DURING OPERATION OF THE
SLIDEOUT ROOM.

ALWAYS KEEP AWAY FROM THE SLIDE RAILS WHEN THE ROOM IS BEING
OPERATED. THE GEAR ASSEMBLY MAY PINCH OR CATCH ON LOOSE
CLOTHING CAUSING PERSONAL INJURY.

INSTALL TRANSIT BARS (IF SO EQUIPPED) ON THE SLIDEOUT ROOM
DURING STORAGE AND TRANSPORTATION.

Fig. 1

1a

1b

SLIDEOUT CONTROL PANEL

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EXTENDING SLIDEOUT ROOM

1. Level the unit.

2. Verify the battery is fully charged and hooked-up to the electrical system.

3. Remove the transit bars (if so equipped).

4. Press and hold the IN/OUT switch (Fig. 1b) in the OUT position until the
room is fully extended and stops moving.

5. Release the switch, which will lock the room into position.

RETRACTING SLIDEOUT ROOM

1. Verify the battery is fully charged and hooked-up to the electrical system.

2. Press and hold the IN/OUT switch (Fig. 1a) in the IN position until the room
is fully retracted and stops moving.

3. Release the switch, which will lock the room into position. NOTE: If the
slideout switch is held after the room in fully retracted, the control will sense
that the room has stopped and will shut off the motor after a few seconds.

4. Install the transit bars (if so equipped).

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Fig.2

10