Service Manual
HTG Series Integrated Hydrostatic Transmission
9
Parker Hannin Corporation
Hydraulic Pump/Motor Division
Greeneville, Tennessee USA
HY13-1524-002-M1/US
General Information
Tools and Materials Required for Servicing
• Clean, petroleum-based solvent
• Emery paper
• Vise with soft jaws
• Air pressure source
• Arbor press
• Flat screw driver
• Grease pen
• Small gear puller
• Torque wrenches
• Sockets: 3/8 inch, 5/16 inch 12 pt., 1/2 inch, 9/16 inch, 5/16 Hex head bit, 15/16
• inch, 1 1/2 inch
• Vise grip™ pliers
• Internal snap ring pliers
• Clean corrosion resistant grease. Recommended grease is Mobil Mobilith SHC® 460
Mixing greases that have different bases can be detrimental to bearing life.
• Break-in oil change 300 hours
• To insure maximum HTG Transmission performance and life, use Parker-1000™ oil. HTG transmissions come
factory lled with Parker HT-1000™ oil. Oil change intervals depend on the type of oil used. Follow OEM
manufacturers recommended oil change interval. Always change the lter when changing the oil.
Approved Oil Packaging P/N
Parker HT-1000™
Hydraulic Transmission Oil Service Kit SK000448
1 U.S. Gallon (3.8L) 406030
1 U.S. Quart (0.79L) 406032
Expansion tank and hose
The HTG transmission requires an expansion tank and hose for proper operation. This allows for uid expan-
sion and contraction when the uid heats up and cools down during normal use. The specic hoses, tanks, and
related parts that came installed on your machine need to be used/maintained in the manner described in the
chassis owner’s manual. The expansion tank and hose parts will vary in size and may require more, or less uid,
depending on your installation. Please refer to the chassis owner’s manual for the specic hydraulic uid ling
procedure and the estimated amount of oil required.
CAUTION
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