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
Pierce Manufacturing Co. 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:  

USO -------- Universal Straight Out slide out
ULO -------- Universal Level Out slide out
HP-----------Hand Pump
DA-----------Power Extend/Power Retract Jacks
SA------------Power Extend/Spring Retract Jacks
MPD---------Manual Pilot Air Dump
PD------------Pilot Air Dump
FW-----------Fifth Wheel Vehicle

 

System #                            System Description                                         Hyd. Diagrams        Elect. Diagrams

AP40405         625S Leveling 4-SA Jacks PD                                                MP69889                MP90011A-D
                        2-AP38147 16,000 SA Jacks
                        2-AP37562 24,000 SA Jacks
                        1-AP41631 Power control w/AP33805 Power Unit                    

 AP44211        625S Leveling 4-SA Jacks PD                                                MP70118                MP90296A-D
                        2-AP38147 16,000 SA Jacks
                        2-AP37562 24,000 SA Jacks
                        1-AP44251 Power control w/AP33805 Power Unit                       

AP49710         2K Leveling HP 4-DA Jacks PD 1-ULO Slide-out                  MP70611A-B         MP90841A-F
                        2-AP45129 16,000 DA Jacks
                        2-AP43838 24,000 DA Jacks
                        1-AP51415 Power Unit
                        1-AP51101 ULO kit w/AP40753 & AP40754 Mechanisms
                        1-AP40745 Center Lift Assembly

AP52872         2K Leveling HP 4-DA Jacks 3-Platform Slide-outs                 MP70751A-D         MP90996A-F
                        2-AP45129 16,000 DA Jacks
                        2-AP43838 24,000 DA Jacks
                        1-AP52874 Power control w/AP52881 Power Unit HP Auxiliary Tank
                        3-AP52930 USO kit w/AP43166 & AP43167 Mechanisms

AP53125         2K Leveling HP 4-DA Jacks 2-Platform Slide-outs                 MP70787A-C         MP91038A-F
                        2-AP45129 16,000 DA Jacks
                        2-AP43838 24,000 DA Jacks
                        1-AP52874 Power control w/AP52881 Power Unit HP Auxiliary Tank
                        2-AP52930 USO kit w/AP43166 & AP43167 Mechanisms

AP54753         725 Leveling HP 4-DA Jacks 3-Platform Slide-outs                 MP70868A-D         MP91128A-E
                        2-AP45129 16,000 DA Jacks
                        2-AP43838 24,000 DA Jacks
                        1-AP55057 Power control w/AP52881 Power Unit HP Auxiliary Tank
                        1-AP54755 Panel / Harness Kit
                        3-AP52930 USO kit w/AP43166 & AP43167 Mechanisms