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
Progressive Industries Trading System Diagrams


THESE DIAGRAMS ARE SPECIFIC TO SYSTEMS ON PARTICULAR VEHICLES.  TO FIND DIAGRAMS SPECIFIC TO A VEHICLE, THE SYSTEM OR INDIVIDUAL PART NUMBERS MUST MATCH THE EQUIPMENT ON THE VEHICLE.

GENERIC DIAGRAMS MAY BE AVAILABLE.  REFER TO "GENERIC SYSTEM DIAGRAMS" ON THE PREVIOUS PAGE.

BECAUSE THERE CAN BE CHANGES TO SYSTEM COMPONENTS, DRAWINGS LISTED HERE MAY DIFFER FROM EXISTING EQUIPMENT ON A PARTICULAR VEHICLE.  IF NECESSARY, CONTACT HWH CORPORATION FOR ASSISTANCE. 

LEGEND:  

DA-----------Power Extend/Power Retract Jack (double-acting)
SA-----------Power Extend/Spring Retract Jacks (single-acting)

FW----------Fifth Wheel/Towable Vehicle

HP-----------Hand Pump

System #                            System Description                                         Hyd. Diagrams        Elect. Diagrams

AP42656         625 Leveling FW Equalizing Valve 4-SA Jacks                   MP69998                MP90146A-D
                        1-AP39392 Power Unit
                        1-AP36945 6,000 SA Jacks
                        1-AP36946 6,000 SA Jacks
                        2-AP40490 6,000 SA Jacks

AP48925         2K Leveling FW HP 2-DA & 2-SA Jacks                          MP70423                MP90656A-E
                        2-AP43164 9,000 SA Jacks
                        2-AP43860 7,000 DA Jacks
                        1-AP45948 Power Unit

AP50066         Landing Gear w/Hydraulic Switches FW HP 2-DA Jacks    MP70516                MP907540
                        1-AP43096 Power Unit
                        2-AP43859 7,000 DA Jacks

AP51934         2K Leveling Trailer HP 4-DA Jacks                                    MP70666                MP90911A-E
                        4-AP43860 7,000 DA Jacks
                       1-AP43493 Power Unit