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
Download the entire HWH Parts Manual here...ml11428.pdf (File is 17MB)
Note: This is the complete parts manual and may be more current than the pages below.

Contents Of Parts Manual

Click on the first letter of the part you wish to view!

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

A

Actuator: Hydraulic piston used to rotate a Kick-Down jack from its horizontal (stored) position to its vertical position. (See Jack's, Kick Down) If the jack's AP# is known it should be listed below its weight class.

Air Compressor (See Compressor, Air)

Air Manifold Assembly (See Manifold Assembly, Air)

Air Solenoid Valve (See Valve, Air Solenoid)

B

Bolt, Pivot: Retainer bolts for a Kick-Down jack cylinder. Pivot point of rotation for the cylinder. Jack specific (See Jack, Kick-Down) If jack AP# is known it should be listed below its weight class.

Box, Control
   touch panel-controlled leveling systems
      310 series

      air leveling systems
   computer-controlled leveling systems
      500 series      

      510 series

      600 series     

      610 series

      610 series w/room extension

      air leveling systems only

      with room extensions & room locks

      625 series motorized

Brain (See Box, Control)

Breather Cap (See Cap, Breather)

Buzzer, Warning

C

Cable Assemblies
   touch panel-controlled leveling systems
   310 systems, motorized vehicles

   computer-controlled leveling systems (touch panel)

Cable, Modular
   touch panel-controlled leveling systems

Cable, Ribbon
   computer-controlled leveling systems (touch panel)

Cap, Breather (See Pump/Motor/Tank Assemblies)

Central Ground Kit (See Repair Kits, Misc.)

Chain (See Room Extension Systems)

Check Valve (See Valve, Check)

Chime, Warning (See Buzzer, Warning)

Compressor, Air
   1 output
      Gast

      Thomas

   2 output, Thomas

Connectors, MTA (See Tools, Special)

Connectors, Packard (See Tools, Special)

Connectors, UML (See Tools, Special)

Control Box Ground Kit (See Repair Kits, Misc.)

Control Handle (See Handle, Control)

Control Panel (See Panel, Control)

Control Valve (See Valve, Control)

Cushion Mounting Kit (See Jacks, Kick-Down 9,000 lb.)

Cylinder: Cylinders are item specific. Determine from which mechanism the cylinder was removed and locate that
mechanism in the Contents listing. If the AP# for the mechanism is known it should be listed below its header.

D

Dipstick (See Cap, Breather)

Drain Valve for Leveling Systems (See Valve, Drain)

E

Electrical Harness (See Harness, Electrical)

F

Filler Cap (See Cap, Breather)

Fittings & Hose, Hydraulic

Flow Valve (See Valve, Needle)

Foot, Jack: Jack specific (See Jack, Straight-Acting - No Pivot, Fixed) or (See Jack, Straight Acting - 5 through 7 Degree Pivot) If jack AP# is known it should listed under its weight class.

Fuse Holders & Fuse Kits

G

Gauge, Hydraulic Pressure (See Tools, Special)

Ground Kit, Central (See Repair Kits, Misc.)

Ground Kit, Control Box (See Repair Kits, Misc.)

Guide, Roller (See Roller Guide)

H

Handle, Control (See Valve, Control)

Harness, Electrical
   computer-controlled leveling systems

Hose, Hydraulic (See Fittings & Hose, Hydraulic)

Hydraulic Jack (See Jack)

Hydraulic Pressure Gauge (See Tools, Special)

I

Indicator Light Panel (See Panel, Le Sy Indicator Lights Only)

Isolation Kit (See Repair Kits, Misc.)

J

Jack Down Light Kit (See Repair Kits, Misc.)

Jacks, Kick-Down
   6,000 lb. lifting capacity

   9,000 lb. lifting capacity

   16,000 lb. lifting capacity

   24,000 lb. lifting capacity

Jack, Straight-Acting (No Pivot - Fixed)
   6,000 lb. lifting capacity

   9,000 lb. lifting capacity

   10,000 lb. lifting capacity

   12,000 lb. lifting capacity

   16,000 lb. lifting capacity

   24,000 lb. lifting capacity

Jack, Straight-Acting (5 Thru 7 Degree Pivot)
   6,000 lb. lifting capacity

   9,000 lb. lifting capacity

   12,000 lb. lifting capacity

   16,000 lb. lifting capacity

   24,000 lb. lifting capacity

K

Kick-Down Jack (See Jack, Kick-Down)

Knob, Black (See Valve, Control)

L

Light Panel (See Panel, Indicator Lights)

Link, Chain (See Room Extension Systems) Links are room specific. If the Coach Manufacturere is known a link to their parts specific pageshould be listed.

M

Main Harness (See Harness)

Manifold
   computer-controlled leveling systems

   touch panel-controlled leveling systems

   fifth wheels or travel trailers

   room extension systems

Manifold Assembly, Air

  for 12 volt systems

   air, 3 valve

   air, 4 valve

   air, 6 valve
      no bypass valve or pressure switch

      with bypass valve

      with pressure switch

      with bypass valve & pressure switch

      with bypass valve & 3 pressure switches

MTA Tools & Connectors (See Tools, Special)

Modular Cable (See Cable, Modular)

Motor (See Pump/Motor/Tank Assemblies)

N

Needle Valve (See Valve, Needle)

O

Oil, Hydraulic (HWH22866)

P

Packard Tools & Connectors (See Tools, Special)

Panel, Control
   leveling systems
      lever-controlled
         110 series (has the integrated light panel)
            12 volt

            24 volt

      joystick-controlled

      touch panel-controlled
         310 series
            motorized vehicles

            non-motorized vehicles

      rocker switch-controlled
      computer-controlled
         paddle switch controls
            replacement components             

            BI-AXIS panels
            remote panels
            remote panels, BI-AXIS
            

            A & E face panels
            Executive Ind. (3 jack)
         touch panel controls
            ribbon cable connections

            modular cable connections

            w/ cable assembly connections

   computer-controlled leveling systems (with ribbon cable)

   computer-controlled leveling systems (with modular cable)

   computer-controlled leveling system (with cable assemby)

  room extension systems

   suspension air dump

Panel, Indicator Lights Only (Leveling System)
   lever-controlled, hydraulic leveling systems

   leveleze light system
   leveleze light system
   joystick-controlled, hydraulic leveling systems
      200 series, separate light panel

Park Brake/Diode Kit (See Repair Kits, Misc.)

Pin (See Room Extension Systems)

Pivot Bolt (See Bolt, Pivot)

Plunger (See Valve, Control)

Power Harness (See Harness)

Power Unit/Valve Unit
   computer-controlled leveling systems
      600 & 610 series
         w/out room extension manifold

         w/ room extension manifold

   touch panel-controlled leveling systems
      for motorhomes
         w/out room extension manifold

         w/ room extension manifold

      for fifth wheels & travel trailers
         w/out room extension manifold

         w/ room extension manifold

   room extensions system only

   landing gear system

Pressure Gauge Kit (See Tools)

Pressure Switch (See Switch, Pressure)

Pump Harness (See Harness)

Pump/ Motor/ Tank Assemblies
   replacement information (page 1 of 2)
   replacement information (page 2 of 2)
   Monarch
      12 volt
         supplied 1995 to present

         supplied 1997 to present

      24 volt
         supplied 1997 to present

      OBSOLETE - supplied 1991 to 1995

      OBSOLETE - supplied 1993 to 1995

      OBSOLETE - supplied 1986 to 1993

   Fenner Stone
      supplied 1992 to present

      OBSOLETE - supplied 1992 to 1995

      OBSOLETE - supplied 1991 to 1992

      OBSOLETE - supplied 1983 to 1991

      OBSOLETE - supplied 1982 to 1993

      supplied 1991 to present

      supplied 1987 to present

      OBSOLETE - supplied 1987 to 1992

   Oildyne bi-directional
      bi-directional

      OBSOLETE - supplied 1990 to 1995

      OBSOLETE - supplied 1992 to 1995

   Webster
      OBSOLETE - supplied 1981 to 1983

      OBSOLETE - supplied 1981 to 1983

      OBSOLETE - supplied 1981 to 1983

   Parker
      OBSOLETE - last supplied 1981

R

Rack Sensing Valve (See Valve, Rack Sensing)

Relays
   12 volt
      single relay

      dual relay

   24 volt
      single relay

Relay Harness (See Harness)

Repair Kits, Miscellaneous

Reservoir, Hydraulic (See Pump/Motor/Tank Assemblies)

Ribbon Cable (See Cable, Ribbon)

Roller, Chain (See Room Extension Systems)

Roller Guide: (See Room Extension Systems) Rollers are room specific. If the Coach Manufacturer is known a link to their parts should be listed.

Roller, Jack (See Jack, Kick-Down)

Room Extension Systems
   O.E.M. 's Application Listings - Look Here First

   Room Extension Diagrams/Parts (Use w/ Previous O.E.M. List)
      Single Cylinder "Guided" Room Extension

      Single Cylinder "Original" Room Extension

      Single Cylinder "Rail" Room Extension
         4" rail

      Dual Cylinder Generator Slide (w/ synch. cyl.)
         6" rail

      Dual Cylinder "Rail" Room Extension
         Rack Sensing Valve models

      Dual Cylinder "Vertical Arm" Room Extension
         Synchronizing Cylinder models

      Four Cylinder Room Extension

Room Panel (See Panel, Control)

S

Sensing Units
   Mercury Sensing Units

   Potted - Electronic Sensing Units as of 01/2003

   Electronic Sensing Units - 325, 625, 2000 series & Active Air

Slide Out (See Room Extension Systems)

Solenoid, Electrical (See Relays)

Solenoid Valve

Spanner Wrench (See Tools, Special)

Spring: Tension device used to retract a jack rod back to its stored postion. Jack specific (See Jacks Kick-Down) or (See Jacks, Straight Acting - No Pivot Fixed) or (See Jack, Straight-Acting - 5 through 7 Degree Pivot)
If jack AP# is known it should be listed below its weight class.

Straight-Acting Jacks (See Jacks, Straight-Acting)

Swaging Equipment (See Tools, Special)

Switch Panel (See Panels, Control)

Switch, Pressure - Call HWH at 800-321-3494

Switch, Warning
   for Kick-Down jacks

   for Straight-Acting jacks
      1 wire

      2 wire, magnetic
      3 wire, magnetic

T

Tank (See Reservoir, Hydraulic)

Transmission Neutral/Park Switch Detector

Tools

Touch Panel (See Panel, Control)

Travel Clamps

U

UML Tools & Connectors (See Tools, Special)

V

Valve, Check: Used for both hydraulic fluid and air flow control, check valves are item specific. Determine from which mechanism a check valve was removed and locate that mechanism in the Contents listing. If the AP# for the mechanism is known it should be listed below its header.

Valve, Control
   lever-controlled leveling system
      100 series, separate indicator lights

      110 series, integrated indicator lights

   joystick-controlled leveling system
      200 series, separate indicator lights
      210 series, integrated indicator lights
      210/225 series, integrated indicator lights, 24 volt

Valve, Drain for Leveling Systems

Valve, Flow (See Valve, Needle)

Valve, Needle: Used to assign a set flow of fluid or air. (See Room Extension Systems) or (See Seal, Air) If the Coach Manufacturer is known a link to their parts specific page should be listed.

Valve/Power Unit (See Power Unit/Valve)

Valve, Rack Sensing: Used to maintain equal travel between two cylinders in Dual Cylinder room extensions prior to the Synchronizing cylinder (See Room Extension Systems). If the Coach Manufacturer is known a link to their parts specific page should be listed.

Valve, Solenoid Hydraulic (MR552000)

Valve, Solenoid Air (See Manifold Assembly Air)

Valve, Velocity
   310, 600, & 610 series leveling systems

Vent Cap (See Cap, Breather)

W

Warning Buzzer (See Buzzer, Warning)

Warning Chime (See Buzzer, Warning)

Warning Switch (See Switch, Warning)

Warning Switch Harness (See Harness)

Water Trap Assembly
   AP6748

Wrench, Spanner (See Tools, Special)

This manual is intended as a parts manual only. It is the responsibility of the person doing the repairs to know the safe and proper procedures. Consult the appropriate coach manufacturer's manual, HWH repair manual, operator's manual or other manual. Contact HWH for additional information if needed.