Komatsu PC88MR-10 Shop Manual page 1120

50 Disassembly and assembly
Power train system
a Be careful not to drop the parts (piston
(105), shoe (106), etc.) in cylinder block
(104) into spindle (2) due to the tight
contact between swash plate (103) and
shoe (106). (For details, see
""Component parts figure"".)
5) Remove piston assembly (piston (105), shoe
(106), and retainer plate (107)) as a whole.
a Remove retainer plate (107) by both
hands.
a Piston (105) integrates with shoe (106)
because they are tied at the spherical
part of the piston. Therefore, they cannot
be separated each other.
a To replace piston (105) and shoe (106),
replace them together. (Called as a piston
assembly hereafter.)
6) Remove piston assemblies (piston (105) and
shoe (106)) (9 units) from retainer plate
(107).
50-92
7) Remove thrust ball (108) from cylinder block
(104).
8) Remove washer (111) and needles (151) (3
pieces) from cylinder block (104).
14.Remove spring inside cylinder block
1) Set cylinder block (104) on the press stand.
a Remove spring (114) only for
replacement.
a To remove spring (114), align the center
of No.1 holder [3] and that of washer
(110), and prevent cylinder block (104)
from being damaged.
a Cover cylinder block (104) with vinyl
sheet [8a] to protect from damages
during the work.
2) Set No.1 holder [3] to upper side washer
(110) and hold it by using the press.
PC88MR-10