Hitachi C 12LSH Technical Data And Service Manual page 50

Item Disassembly
No. spots
3
Gear case,
spring, support,
hinge (A), ball
bushing, holder
(A)
(1) Remove the Machine Screw M4 x 12 [276] and remove the Nylon
Clip [278] from the Gear Case [275] (head).
(2) Remove the Seal Lock Hex. Socket Hd. Bolt M5 x 10 [150].
NOTE: The Seal Lock Hex. Socket Hd. Bolt M5 x 10 [150] acts as
the upper limit stopper of the Gear Case [275] (head).
Be careful that the Gear Case [275] (head) is raised by the
force of the Spring [152] when the Seal Lock Hex. Socket
Hd. Bolt M5 x 10 [150] is removed.
(3) Remove the Seal Lock Hex. Socket Set Screw M6 x 10 [64]. Make
a flat-blade screwdriver contact with the end surface of Hinge Shaft
(A) [186] and lightly tap the screwdriver with a plastic hammer to
remove Hinge Shaft (A) [186].
NOTE: Be sure to hold the Gear Case [275] (head) with hand
during disassembly to prevent the Gear Case [275] (head)
from being dropped when removing Hinge Shaft (A) [186]
from the hole of the Gear Case [275] (head).
Then the Spring [152] and the Sleeve [151] can be removed from
the Gear Case [275] (head).
(4) Remove the Seal Lock Hex. Socket Set Screw M6 x 10 [64] and
remove Shaft (D) [167] from the Support [134] at the rear.
(5) Remove the two Hex. Socket Set Screws M8 x 10 [135] from the
Support [134] at the front (operator side). Lightly tap the Support
[134] outward with a plastic hammer to remove it from Slide Pipe
(A) [149] and Slide Pipe (B) [166].
(6) Loosen Knob Bolt M6 x 25 [146] at the top of Hinge (A) [173] and
slide Hinge (A) [173] to the front (operator side) to remove it from
Slide Pipe (A) [149] and Slide Pipe (B) [166]. Then slide the rear
Support [134] backward with Slide Pipe (A) [149] and Slide Pipe
(B) [166] mounted and remove it from Holder (A) [145].
(7) Remove the Seal Lock Hex. Socket Set Screw M6 x 10 [148] from
the side of Hinge (A) [173]. Remove the Bushing [143] from Hinge
(A) [173].
NOTE: Prepare a shaft of 31 mm in diameter and 50 mm in length.
Make the shaft contact with the end surface of the Bushing
[143] and lightly tap the shaft with a plastic hammer to
remove the Bushing [143] from Hinge (A) [173].
Disassembly procedure
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Necessary tools
Phillips
screwdriver
4-mm hex. bar
wrench
3-mm hex. bar
wrench
Flat-blade
screwdriver
Plastic hammer
3-mm hex. bar
wrench
4-mm hex. bar
wrench
Plastic hammer
3-mm hex. bar
wrench
φ31 x 50 mm
shaft
Plastic hammer