Operation and maintenance manual

Section 230-0121
SM 1448 Rev 1 1-02
3
* * * *
ASSEMBLY
Numbers in parentheses refer to Fig. 1.
1. Install new 'O' ring (3) to spring cover (2). Install
control spool (6), spring guide (5) and control spring (4)
into its bore in valve body (1).
2. Install pilot (12) and spring (13) into its bore in valve
body (1). Install new 'O' ring (14) to spring guide (15)
and install in valve body (1).
3. Install new 'O' ring (8) to plug (7). Install spacer (11),
new 'O' ring (10) and valve seat (9) into its bore in valve
body (1). Install plug (7) in valve body (1).
4. Install new 'O' ring (17) to adaptor (18). Install
adaptor (18) in valve body (1). If removed, install plug
(19) in adaptor (18).
5. Install new 'O' ring (21) to reducer (22). Install
reducer (22) in valve body (1).
6. Install elbows (24), Tee piece (25) and adaptors (23)
in valve body (1) and reducer (22).
INSTALLATION
Numbers in parentheses refer to Fig. 1.
Note: Tighten all fasteners to standard torques listed in
Section 300-0080, STANDARD BOLT AND NUT
TORQUE SPECIFICATIONS.
Note: Tighten all hydraulic lines fitted with ORFS
connections, as described in Section 250-0000,
BRAKING SYSTEM SCHEMATIC. Renew all 'O' rings
where used.
1. Secure pilot valve (1) to cradle assembly with bolts
(27) and lockwashers (28).
2. Remove blanking caps from hydraulic lines and
install lines to pilot valve (1) as identified during
removal.
3. Fill hydraulic oil tank with hydraulic oil as specified
in Section 300-0020, LUBRICATION SYSTEM. Refer
to Section 230-0040, HYDRAULIC TANK, for hydraulic
oil levels. Install filler cap on hydraulic tank filler neck.
4. Place the battery master switch in the 'On' position,
start the engine and bring hydraulic oil to operating
temperature.
5. Check pilot valve (1) and hydraulic line connections
for leaks and tighten as required.
6. Remove all blocking from road wheels and place
steering lock bar in the stowed position.
SPECIAL TOOLS
There are no special tools required for procedures
outlined in this section. Refer to Section 300-0070,
SERVICE TOOLS, for part numbers of general service
tools required. These tools are available from your
dealer.
Body System - Pilot Supply Valve