HWH Corporation
(On I-80, Exit 267 South)
2096 Moscow Road
Moscow, Iowa 52760

Phone: (563)724-3396 or (800)321-3494
Fax: (563)724-3408

Business Hours: 8 a.m. - 5 p.m. Central Time (M-F)

The World's Largest Manufacturer
of RV Leveling & Room Extension Systems
Service Manuals
Fifth Wheel/Travel Trailer Landing Gear or Levelin Systems with hand pump

MP440009.PDF - Priming the hand pump; double-acting or single-acting jacks

Leveling Systems Only

200/310/610 Pilot Air Dump

ML24343.PDF - Pilot Air Dump repair for 200/310/610 Leveling Systems for Winnebago Industries motorized vehicles

200/210/225 Series (Joystick)

ML23934.PDF - HWH Joystick-Controlled Leveling System
Featuring: Joystick BI-AXIS Control - Kick-Down or Straight-Acting Jacks - With/Without Air Dump

310 Series (Manual Touch Panel)

ML13514.PDF - HWH Manual Touch Panel-Controlled Leveling System
Featuring: Manual Touch Panel Control - Kick-Down or Straight-Acting Jacks - With/Without Air Dump

325 Series (Manual Touch Panel)

ML33832.PDF - HWH Manual Touch Panel-Controlled Leveling System
Featuring: Manual Touch Panel Control - Touch Panel DOES NOT HAVE a "Not In Park/Brake" Light - Straight-Acting Jacks - With/Without Air Dump

ML37640.PDF - HWH Manual Touch Panel-Controlled Leveling System
Featuring: Manual Touch Panel Control - Touch Panel DOES HAVE a "Not In Park/Brake" Light - Straight-Acting Jacks - With/Without Air Dump

400 Series (Computerized Paddle Switch)

ML7879.PDF - HWH Paddle Switch-Controlled Computerized Leveling System
Featuring: Paddle Switch Control Panel - Computerized Automatic Leveling - Kick-Down or Straight-Acting Jacks - With/Without Air Dump

500 series (Computerized Touch Panel - Air Leveling)

ML22362.PDF - HWH Touch Panel-Controlled Computerized Air Leveling System
Featuring: Touch Panel Control - Computerized Automatic Air Leveling - Four Point Air Leveling Only

510 Series (Computerized Touch Panel)

ML7820.PDF - HWH Touch Panel-Controlled Computerized Leveling System
Featuring: Touch Panel Control - Computerized Automatic Leveling - Kick-Down Jacks - With/Without Air dump

600 Series (Computerized Touch Panel - Air Leveling)

ML11148.PDF - HWH Touch Panel-Controlled Computerized Air Leveling System
Featuring: Touch Panel Control - Computerized Automatic Air Leveling - Four Point Air Leveling Only - Foretravel

ML19048.PDF - HWH Touch Panel-Controlled Computerized Air Leveling System
Featuring: Touch Panel Control - Computerized Automatic Leveling - Four Point Air Leveling Only

610 Series (Computerized Touch Panel)

ML9138.PDF - HWH Touch Panel-Controlled Computerized Leveling System
Featuring: Touch Panel Control - Computerized Automatic Leveling - Kick-Down Jacks - With/Without Air Dump - Single Plug Warning Switch Harness and Three Wire Warning Switches

ML1679.PDF - HWH Touch Panel-Controlled Computerized Leveling System
Featuring: Touch Panel Control - Computerized Automatic Leveling - Central Grounding - Kick-Down Jacks - With/Without Air Dump - Two Plug Warning Switch Harness and Two Wire Warning Switches

ML1681.PDF - HWH Touch Panel-Controlled Computerized Leveling System
Featuring: Touch Panel Control - Computerized Automatic Leveling - Central Grounding - Straight-Acting Jacks - With/Without Air Dump - Two Plug Warning Switch Harness and Two Wire Warning Switches

625 Series (Computerized Touch Panel)

ML35963.PDF - HWH Touch Panel-Controlled Computerized Leveling System
Featuring: Touch Panel Control - Computerized Automatic Leveling - Central Grounding - Straight-Acting Jacks - With/Without Air Dump

ML41240.PDF - HWH Single Step Touch Panel-Controlled Computerized Leveling System - New
Featuring: Touch Panel Control - BI-AXIS Hydraulic Leveling - Remote Rocker switches - Straight-Acting Jacks
Pilot Dump - With/Without Air Dump - For diagrams only print pages 20-31

725 Series (Computerized Touch Panel)

ML48380 - HWH Single Step Touch Panel-Controlled Computerized Leveling System - New
Featuring: Touch Panel Control - BI-AXIS Hydraulic Leveling - Straight-Acting Jacks - Pilot Dump - With/Without Air Dump

2000 Series (Computerized Touch Panel - Air Leveling)

ML31043.PDF - HWH Touch Panel-Controlled Computerized Leveling System
Featuring: Touch Panel Control - Computerized Automatic Air Leveling - 4 Point Air Leveling Only - Single Two Ring Control Box - With/Without Tag Axle

Room Extensions With Leveling Systems

Two Cylinder "Rail" Room with Rack Sensing Valve
Single Room with Guide Tubes

ML13633.PDF - 200 Series Leveling System with One or Two Rooms
Featuring: Two Cylinder "Rail" Room Extension with Rack Sensing Valve - Single Cylinder Room Extension with Guide Tubes - 200 Series Joystick Leveling System

ML12771.PDF - 310 Series Leveling System with One or Two Rooms
Featuring: Two Cylinder "Rail" Room Extension with Rack Sensing Valve - Single Cylinder Room Extension with Guide Tubes - 310 Series Manual Touch Panel System

ML12726.PDF - 610 Series Leveling System with One or Two Rooms
Featuring: Two Cylinder "Rail" room Extension With Rack Sensing Valve - Single Cylinder Room Extension With Guide Tubes - 610 Series Computerized Touch Panel System

ML11570.PDF - 200 Series Leveling System with One Room Extension - Winnebago Industries
Featuring: Two Cylinder "Rail" Room Extension with Rack Sensing Valve - 200 Series Joystick Leveling System

ML11759.PDF - 610 Series Leveling System with One Room Extension - Winnebago Industries
Featuring: Two Cylinder "Rail" Room Extension with Rack Sensing Valve - 610 Series Computerized Touch Panel Leveling System

Two Cylinder "Rail" Room with Synchronizing Cylinder
Two Cylinder "Rail" Room - "Level-Out" - With Synchronizing Cylinder
Two Cylinder "Vertical Arm" Room with Synchronizing Cylinder
Single Cylinder "Guided" Room
Four Cylinder Room with Synchronizing Cylinder

ML21958.PDF - 200/210 Series Leveling System with Multiple Room Extensions
Featuring: Two Cylinder "Rail" Room with Synchronizing Cylinder - Two Cylinder
"Vertical Arm" Room with Synchronizing Cylinder - 200/210 Joystick Leveling System

ML21956.PDF - 310 Series Leveling System with Multiple Room Extensions
Featuring: Two Cylinder "Rail" Room With Synchronizing Cylinder - Two Cylinder
"Vertical Arm" Room With Synchronizing Cylinder - 310 Manual Touch Panel Leveling System

ML23521.PDF - 310 or 610 Series Leveling System with Multiple Room Extensions - Winnebago Industries
Featuring: Two Cylinder "Rail" Room Extension With Synchronizing Cylinder - Two Cylinder "Rail" Room Extension "Level Out" With Synchronizing Cylinder - Single Cylinder "Guided" Room Extension - 310 Series Manual Touch Panel Leveling System - 610 Series Computerized Touch Panel Leveling System

ML23522.PDF - 310 or 610 Series Leveling System with Multiple Room Extensions - Winnebago Industries
Featuring: Two Cylinder "Rail" Room Extension with Synchronizing Cylinder - Two Cylinder "Rail" Room Extension "Level out" With Synchronizing Cylinder - Four Cylinder Room Extension with Synchronizing Cylinder

Room Extensions With NO Leveling Systems

Two Cylinder "Rail" Room with Rack Sensing Valve
Single Cylinder Room with Guide Tubes

ML10709.PDF - Multiple Room Extensions on Non-Motorized Vehicles - National RV
Featuring: Two Cylinder "Rail" Room with Rack Sensing Valve - Single Cylinder Room with Guide Tubes

ML11573.PDF - Multiple Room Extensions - No Leveling System
Featuring: Two Cylinder "Rail" Room with Rack Sensing Valve - Single Cylinder Room with Guide Tubes

Electric Travel Clamps

ML41035.PDF - Manual Travel Clamps - HWH Room Extensions - 2 rocker switch control panel - 225 Joystick
Leveling System

ML41213.PDF - Manual Travel Clamps - HWH Room Extensions - 2 rocker switch control panel - 325/625
Leveling System or NO HWH Leveling System

ML41205.PDF - Manual Travel Clamps - Fleetwood - 2 rocker switch control panel - single clamp - No HWH Room Extensions or Leveling Systems

ML35976.PDF - Automatic Travel Clamp Service Manual - Fleetwood

ML39511.PDF - Automatic Travel Clamps - HWH Room Extensions - 325/625 Leveling System or no HWH
Leveling System - Control box number AP29038

ML41218.PDF - Automatic Travel Clamps - HWH Room Extensions - 325/625 Leveling System or no HWH
Leveling System - Control box number AP40484

ML41167.PDF - Automatic Travel Clamps - No HWH Room Extensions or Leveling Systems - Control box
number AP34567

ML41142.PDF - Automatic Travel Clamps - No HWH Room Extensions or Leveling Systems - Control box
number AP40185

Note: If you experience problems when attempting to view these files. Please feel free to contact us at engineering@hwhcorp.com.

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