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
HWH Generic System & Room Mechanism Diagrams


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.

Manifold hydraulic connection diagram - 2 power extend/power retract jacks - 2 room extensions - auxiliary hand pump - MP642470

Slide-Out Systems - Hydraulic Line Connection Diagrams

Single cylinder - ML50387

Single cylinder "Guided" - ML50388

Dual cylinder under floor "Rail" - ML50389

Dual and single cylinder "In Floor" - ML50390

Dual cylinder above floor "Universal Straight-Out (USO)" - ML50391

Dual cylinder above floor "Universal Straight-Out (USO) Light Duty" - ML50392

Dual cylinder above floor "Universal Level-Out (ULO)" with room lift cylinders - ML50393

Dual cylinder above floor "Universal Level-Out (ULO)" with room lift and center lift cylinders - ML50394

Dual cylinder above floor "Universal Platform Level-Out (UPLO)" with one platform lift cylinder - ML50395

Dual cylinder above floor "Universal Platform Level-Out (UPLO)" with two platform lift cylinders - ML50529

Dual cylinder above floor "Universal Platform Level-Out (UPLO)" with three platform lift cylinders - ML50530

Dual cylinder above floor "Universal Platform Level-Out (UPLO)" with synchronizing cylinder box and three platform lift cylinders - ML50531

Dual cylinder above floor "Universal Level-In/Level-Out (ULI/ULO)" with one floor lift cylinder - ML50532

Step Assembly - ML50533