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
Installation Instructions for Hand pump/Electrical pumps

AP43040 - Hand Pump/Electrical Pump with Automatic Computerized Full Leveling Control & Power-Up / Power-Down Landing Gear Combined with 9,000 lb. Spring Retracted Jacks

  • MI154580 - Landing gear installation instructions - 2.5" mounting diameter
  • ML43031 - Operator's manual with connection diagrams

AP43039 - Hand Pump with Hydraulic Switches & Power-Up / Power-Down Landing Gear Combined with 9,000 lb. Spring Retracted Jacks

  • MI154580 - Landing gear installation instructions - 2.5" mounting diameter
  • ML42748 - Operator's manual with connection diagrams

AP43042 - Hand Pump/Electrical Pump with Remote Electrical Panel & Power-Up / Power-Down Landing Gear

  • MI154580 - Landing gear installation instructions - 2.5" mounting diameter
  • ML43086 - Operator's manual with connection diagrams

AP43037 - Hand Pump with Hydraulic Switches & Power-Up / Power-Down Landing Gear

  • MI154580 - Landing gear installation instructions - 2.5" mounting diameter
  • ML43088 - Operator's manual with connection diagrams

AP43038 - Hand Pump / Electrical Pump with Hydraulic Switches & Power-Up / Power-Down Landing Gear

  • MI154580 - Landing gear installation instructions - 2.5" mounting diameter
  • ML42748 - Operator's manual with connection diagrams

AP43076 - Leveleze Indicator Light System for Hydraulic Switch Valves

  • ML43120 - Installation instructions for the Leveleze indicator light system
  • MP440009 - Priming the hand pump; double-acting or single-acting jacks

Connection Diagrams
Early alternate plumbing and electrical (Non-motorized vehicles)

MP643990 - 2 Power-Extend/Power-Retract jacks (front) & 2 Power-Extend/Spring-Retract jacks (rear)

MP643991 - 4 Power-Extend/Spring-Retract jacks

MP643992 - 4 Power-Extend/Power-Retract jacks

MP846040 - Electrical Leveling manifold connections