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)

Operational Information

ML23032 - BI-AXIS Leveling Commentary

Pivotal vs Rigid - A comparison of our system against their's

MI9558 - All OEM's - Yellow Level Indicator Lights On 625 One Touch Leveling Systems

MI9559 - Winnebago Industries - Yellow Level Indicator Lights On 625 One Touch Leveling Systems

MI9541 - Towing a vehicle with an HWH Air Leveling System

ML30817 - Jack retraction information for 305/310/325 & 610/625 leveling systems

MI158813 - Manual Jack retraction - Jacks won't retract with the use of the touch panel or manual valve release mechanism. 310-305-325-610-625-625S-725 series systems.

MI95400c - Jacks down warning light & buzzer on 310 & 610 leveling systems

MI159413 - Automatic Leveling - "Incorrect Procedure" operations

MI95531 - Cold Weather Operations

Solenoid Information

ML44725 - Solenoid valve replacement and the Store Mode

MI150063 - Solenoid valve - Release Cam replacement

MI849999 - Solenoid valve identification - Manual Operations - replacement

Hydraulic Oil replacement of Standard ATF with Synthetic ATF

ML46791 - Replacing standard ATF with synthetic ATF

Hydraulic Jack Information

MI157810A - Instruction sheet / Straight-Acting Jacks / Bolt thru Clamps

MI157810B - Instruction sheet / Straight-Acting Jacks / Drilled and Tapped Weld On StyleClamps

MI157810C - Instruction sheet / Straight-Acting Jacks / Crosstie Clamp Kit

MI157810D - Instruction sheet / Straight-Acting Jacks / Mounting Bracket with Clamps

MI154755 - Painting & mounting instructions for landing gear & other jack assemblies

MI9553 - Allowable retraction times for hydraulic jacks

MI9540 - Repairing or installing the 16K AP8525 leveling jack

MI9547 - Maintenance for the AP1206 mechanical kick-down jack

MI9542 - Installing jack mounting brackets on MOR/RYDE suspensions

MI9562 - Horizontal and Vertical adjustments for Kick-Down jacks

ML47149 - Maintenance of all HWH Kick-Down & Straight-Acting jacks

Hydraulic Power Unit Information

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

MI9574 - Jumper bypass to run 12 or 24 volt pumps when computerized controls do not function

MI9564 - Remote manifold priming/bleeding procedure

Level Sensing Unit Information

MI9543 - Non-electronic sensing unit tolerances & adjustment

ML47509 - Electronic sensing unit, control box mounted, w/wo adjustment enhancement switch, tolerances & adjustment

Replacement of Non-Electronic Sensing Unit with "Potted" Electronic Sensing Unit- Locating Switched +12V

MP441614 - Precision Leveling System, Leveling and Sensing Unit adjustment - Oshkosh Specialty Vehicles

ML24976 - Hose swaging and repair instructions

MI9550 - HWH 02 HP hose ID by printout on hose cover - Winnebago Industries

MI9551 - HWH 02 HP hose ID by printout on hose cover - All OEM's

MI9552 - Concerning return policy for HWH hose warranties

MI9573 - Proper hose end tightening procedures

General Electrical Information

MI9561 - 625 one touch leveling system touch panel pigtail update for systems with remote rocker switches

Information Bulletin

MI1598 - 625 one touch leveling system touch panel pigtail update for systems with remote rocker switches

Instruction Sheet

MI150064 - How to adjust regulator for Tiffin air leveling systems

Strike_Plug_How_To - 725 leveling system, 32 pin Deutsch connector wire installation and removal

MI9557 - Master Relay rotation with installation of adaptor plate kit

MI9554 - Protection of Electrical Connections

MI15600C - Lighted reset switch installation

MI9545 - Battery voltage and grounds

MI9544 - Jack pressure switch adjustment for 610 & 625 leveling systems

ML47649 - 3500 PSI switch installation instructions

ML10906 - Ground enhancement instructions for 610 non-central ground systems

MI9564 - Remote manifold priming/bleeding procedure

MI154575 - Capacitor/Voltage Stabilization Kit installation

Room Extension Information

ML51267 - Sync/Bleed procedure for lightweight Universal room extensions with remote manifolds

MI15991 - Slimline pressure switch - assembly and information

MI9546 - Diagnosing "Creep Out" problems for type"A" room extensions with large solenoid valves

MI957603 - Hydraulic solenoid valve ID and replacement for room extensions

MI159502 - Hydraulic solenoid valve ID and replacement of 2 (two) solenoid valves for room extensions

MI95400K - Synchronizing cylinder pressure switch information for room extensions with 4 room cylinders

MI154560 - "X" Slide Adjustments

MI9556 - 2004 Winnebago Industries "X" Slide Installation Adjustments

MI9549 - 4 cylinder room extension systems, relay valve rewiring

MI9548 - 610 series, Computer-Controlled leveling system applications