DOC-20230111-WA0038.

Assemble Travel Pilot Valve
UPPERSTRUCTURE / Pilot Valve
IMPORTANT: Pay attention to the mounting direction
of spring guide (22).
IMPORTANT: Install the former number of shims.
1. Assemble the spool into assembly. (4 used)
• Insert spacer (19), shim (20), balance spring (21)
into the spool in order.
• Press the balance spring with hand. Install spring
guide (22) to the spool with the stepped-end facing
down.
2. Insert spring (18) to casing (14). (4 places)
IMPORTANT: Insert the spool (17) assembly into
the former port.
3. Turn and install the spool (17) assembly into casing
(14). (4 places)
4. Assemble the plunger (4 used).
• Install oil seal (11) onto bushing (13).
• Apply the grease to the inner face of the oil seal.
• Install O-ring (12) to the bushing.
• Insert pusher (23) to the bushing.
• Apply the grease to the pusher head section.
5. Insert the pusher (23) assembly to holder (10). (4
places).
6. If bushing (31) has been removed from holder
(10), it shall be installed on the holder using special
tool (ST 7256) in the following procedures.
NOTE: The bushings (4 used) are identical.
• Insert the bushing into special tool (ST 7256),
then tap on the special tool (ST 7256) to install the
bushing into the hole of the holder.
Stop tapping when the bushing end is flush with
the inside wall.
Inside Wall
10
ST 7256
W176-02-07-016
• Install the bushing on the opposite side in the
same procedure. 31
10
ST 7256
31
W176-02-07-015
• Install the bushing in near side as shown bellow.
Stop tapping when the bushing end is flush with
the outside of the holder.
31
10
ST 7256
Outside of
Holder
W176-02-07-014
• Install the bushing on opposite side as shown below.
31
10
ST 7256
W176-02-07-013
W2-7-29