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
SMI & Hydraulics 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

ReM---------Remote Manifold

System #                            System Description                                         Hyd. Diagrams        Elect. Diagrams

AP42709         625 Leveling FW Equalizing Valve 4-SA Jacks                       MP70003                MP90154A-D
                        1-AP38221 Power Unit
                        2-AP36807 10,000 SA Jacks
                        2-AP43878 12,000 SA Jacks

AP45207         2K Leveling FW HP ReM 2-DA & 2-SA Jacks                     MP70186A-E          MP90385A-F
                        4-USO Slide-outs
                        2-AP42311 12,000 SA Jacks
                        2-AP43900 16,000 DA Jacks
                        1-AP44977 Power Unit HP
                        4-AP45209 USO Kits w/AP38251 & AP38252 Mechanisms