4-24
NOTE :
Pump and motor valve plate are installed on the
body during assembly. But after operating HST,
when disassembling, the valve plates is usually
laid on cylinder blocks.
2. Remove spring and spring seat for charge relief
valve.
3. Remove the rotating assembly of pump and
motor in the housing. The rotating assembly
consists of cylinder block, piston, spherical bush,
retainer and spring.
NOTE :
The cylinder block of pump and motor are
interchangeable, but it is recommended that the
cylinder blocks go into original position (before
disassembly) during assembly.
4. Remove cylinder block, retainer, spherical
bush, piston, spring from the parts of rotating
assembly. It is easy to remove the parts of
rotating assembly.
5. Remove the shaft of motor
Note : The shaft of motor is easily removed, but
the shaft of pump can be removed after
removing of snap ring at rear side of housing.
1. Remove pump and motor valve plate.
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