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
Technical Service & Repair Information


Contact information for service/repair assistance – email or phone
      HWH service school information
      Sign up for HWH service bulletins

Diagnostic Service/Repair Manuals

Frequently Asked Questions

HWH Nomenclature – Systems and Components

Information – repair – installation bulletins or instruction sheets

Leveling System Identification

Manual Room Retract Procedures (includes generator slides – steps – step covers – etc.)

O.E.M. Specific System Schematics & Diagrams

Operating Information and Manuals

Parts Catalog

Quick Reference Diagnostic Sheets – Control Box LED & Fuse Information

Quick Reference Part Number Sheets

Slide-Out Mechanism Cylinder Replacement – Adjustment – Bleed Procedures

Slide-Out Mechanism Identification (Includes Travel Clamps & Room Locks) - Pictorial

Slide-Out Mechanism Identification - Text

Schematics and Flow Diagrams

Warranty Procedures

Wire Standards

Abbreviations