Shibaura ST318, Workshop Manual

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6) Disassembly, inspection and reassembly
(1) Disassembly of hydrostatic transmission
Disassembling procedure
1 HST unit
HST pedal
Shift link
➀ Remove the control lever from the HST unit
(trunnion shaft) and separate the damper from
below of the unit.
➁ Remove the HST unit from the front of the
transmission case (front).
➂
Remove the coupling with snap ring of the drive
shaft.
➃ If necessary, drive out the spring pin of the pedal
and remove the pedal, pedal support and shift link.
(Extract the shift link together with the shift plate
and damper to the inside of the case.)
2 Drive shaft (PTO)
➀ Remove the bearing retaining bolt at the rear of the
transmission case (front) and extract the shaft, roller
bearing and collar together rearwards from the case.
➁
If necessary, remove the snap ring and take out the
roller bearing and collar from the shaft.
➂ Remove the oil seal and needle bearing from the
case.
NOTE: Take care to the needle bearing and oil seal
when extracting the shaft.
T519
T520
T521