IV-14
HYDRAULIC UNITS
HST PUMP
18. Remove the coupling (27).
19. Remove the two pins (29) for positioning the
pump.
• Take care not to drop the pins inside the hous
-
ing.
20. Disassemble the cylinder block assembly.
The cylinder block assembly should not be
disassembled unless required for cleaning
up foreign matter or replacing damaged
components.
a. Remove the piston (31) and the retainer (32)
from the cylinder block (36).
b. Remove the ball guide (33), and take out three
hold-down pins (35).
c. Remove the retainer ring (34) from the cylin
-
der block (36).
21. Disassemble the cylinder block.
WARNING
Always wear appropriate protective items such
as safety goggles, as component parts can
jump out and cause serious bodily injury.
Do not disassemble the cylinder block unless
required.
a. Remove the retaining ring (40) while com
-
pressing the spring.
b. Remove the washer (39), the spring (38) and
the washer (37) from the cylinder block (36).
S3F317
27
T7D105
29
29
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