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HWH 400 Series User Manual

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LOW
VOLTS
FUSE
HORIZONTAL
VERTICAL
5 AMP.
ON
AUTOMATIC
LEVELING
AUTOMATIC
RETRACT
LEFT REAR
LEFT FRONT
RETRACT
HOLD
EXTEND EXTEND
HOLD
RETRACT
RIGHT FRONT
RIGHT REAR
RETRACT
HOLD
EXTEND
TO PREVENT DAMAGE FROM OVERHEATING DO NOT HOLD SWITCH
ON FOR MORE THAN TWO OUT OF EVERY FOUR MINUTES.
BLOCK FRAME SECURELY BEFORE
CHANGING TIRES OR WORKING UNDER VEHICLE.
CAUTION!
MASTER
EMERGENCY
OFF
MANUAL OPERATION
H
H
W
CORPORATION
R
ML7879/MI91.0009
12JAN06
HWH COMPUTER-CONTROLLED
HYDRAULIC LEVELING SYSTEM
400 SERIES
FEATURING:
Paddle Switch Control
SERVICE MANUAL
HWH CORPORATION
(On I-80, Exit 267 South)
2096 Moscow Road | Moscow, Iowa 52760
Ph: 800/321-3494 (or) 563/724-3396 | Fax: 563/724-3408
www.hwh.com
R
CORPORATION
W
H
H
R
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HWH 400 Series Specifications

General IconGeneral
BrandHWH
Model400 Series
CategoryControl Systems
LanguageEnglish

Summary

INTRODUCTION AND TROUBLESHOOTING GUIDE

HOW TO USE THE MANUAL

Guide on navigating the manual's sections for diagnosis and repair.

SAFETY WARNINGS AND PRECAUTIONS

Critical safety warnings, notes, and checks before troubleshooting.

TROUBLESHOOTING STEPS

MANUAL OPERATION TESTING

Step-by-step testing of manual leveling functions, including jack extension and retraction.

AUTOMATIC OPERATION TESTING

Procedures for testing automatic leveling and retract functions and system responses.

REPAIR MANUAL AND PROCEDURES

REPAIR STEPS OVERVIEW

Detailed troubleshooting steps and solutions for various system problems, categorized by component or function.

CONTROL PANEL AND POWER ISSUES

Diagnosing problems related to the control panel's power, lights, and basic functions.

JACK OPERATION AND ACTUATION PROBLEMS

Diagnosing issues with jacks extending, retracting, swinging, and general actuation problems.

AUTOMATIC LEVELING AND SENSING ISSUES

Troubleshooting automatic leveling, retracting, and issues with the level sensing unit.

SYSTEM SCHEMATICS AND DIAGRAMS

HYDRAULIC SCHEMATICS AND DIAGRAMS

Visual representations of hydraulic system connections, schematics, and line diagrams.

ELECTRICAL SCHEMATICS AND DIAGRAMS

Diagrams detailing electrical connections for panels, manifolds, relays, and wiring.

LEVEL SENSING UNIT MOUNTING AND ADJUSTMENT

Instructions for mounting and adjusting the level sensing unit for proper vehicle leveling.

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