Service Manual

HY13-1521-M2/US Service Manual

General Information Series HB Hydrostatic Transmission

EXAMPLE:

First Reading 300 psi (21 bar) 5 gpm (19 l/min)

Second Reading 1000 psi (69 bar) - 3 gpm (11 l/min)

Difference 2 gpm (8 l/min)

By subtracting the second reading from the first, a

defective pump can be identified. In the example

above, 2 gpm indicates a defective pump.

Parker Hannifin Corporation

Hydraulic Pump/Motor Division

Greeneville, Tennessee USA