Shibaura ST330, Workshop Manual

Page: 103 / 250

93
5. HST UNIT
1
）
Disassembling
Reference Figure 372Y.
(1) Pump Removal
①
Remove the socket head bolts (50) (4 pcs) and take out the pump case assembly (1) and gasket (33) from the port
block.
②
Remove the valve plate (9) from the port block (3).
（
The valve plate (9) is usually installed to the cylinder block (5) but may be installed to the port block side in some
cases. ）
NOTE:
1. Be careful not to drop the valve plate(9).
2. Raising one side of the valve plate (9) will facilitate its removal.
③ Remove the cylinder block assembly from the pump case (1).
NOTE
：
Take care do not lost three pins (22) when removed cylinder block assembly.
④
Remove the thrust plate (59) from the swash plate (6).
（
If the thrust plate is difficult to remove, pulling it up with an L-shaped bar will facilitate its removal.
）
372Y