Service Manual

HY13-1521-M2/US Service Manual
General Information Series HB Hydrostatic Transmission
Before you disassemble the UHT or any of its components, read this entire manual. It provides important
information on parts and procedures you will need to know to service the UHT Unit.
The UHT will have a six cross member bolts and four frame mounting bolts.
Remove fan from shaft prior to servicing any portion of UHT unit to prevent from breaking.
Thoroughly clean off all outside dirt, especially from around fittings before disconnecting and removing the UHT
transmission. Remove rust or corrosion from the coupling shaft.
Remove shaft connections and immediately plug port holes and fluid lines.
Remove the UHT from the system, drain it of fluid and take it to a clean work surface.
Clean and dry the UHT before you start to disassemble it.
As you disassemble the UHT, clean all parts, except seals, in clean, OSHA approved solvent, and air blow them
dry.
WARNING
Solvents are flammable, be extremely careful when using them. Even a small explosion or fire could
cause injury or death.
WARNIN
G
Wear eye protection and be sure to comply with OSHA and other maximum air pressure requirements.
W
ARN
IN
G
Never steam or high pressure wash hydraulic components. Do not force or abuse closely fitted parts.
Keep parts separate to avoid nicks and burrs.
Disca
rd all seals and seal rings as they are removed from the UHT Unit. Replace all seal rings and any damaged
or worn parts with genuine Parker Hannifin Corporation or OEM approved service parts.
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Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, Tennessee USA