Service Manual User Manual

Section 9
9-72
Outlet Section
Remove the SAE plug (7, Fig. 9– 53) and O-ring (8) from
the outlet section assembly (6) to facilitate cleaning and
removal of any debris from within the outlet section.
Attachment Tilt Section
1. Carefully separate the outlet section assembly (6,
Fig. 9– 53) from the attachment tilt section assembly
(9). Avoid dislodging or loosing the shuttle (12),
spring (13) and control valve (C.V.) compensator
(14).
2. Remove the O-ring (11) from between the two
sections.
3. Remove the shuttle (12), spring (13) and control
valve (C.V.) compensator (14) from the attachment tilt
section casting (9).
4. Remove both socket-head capscrews (15) securing
the seal plate (16) to the section assembly (9).
5. Remove the seal plate (16), spool end (17), spool
cap (18), spring seat (19), spring (20), and another
spring seat (19).
6. Remove and discard the O-rings (21 and 22).
7. Remove the spool cap retainer (23).
8. Remove and discard the O-ring (24).
9. Remove both socket-head capscrews (26) securing
the seal plate (16) to the section assembly (9).
10. Remove the spool cap (25) and O-ring (24). Discard
the O-ring.
Frame Tilt Section
1. Carefully separate the attachment tilt section
assembly (9, Fig. 9– 53) from the frame tilt section
assembly (10), being careful not to dislodge or loose
the small internal parts. Remove the O-ring (11) from
between the two sections. Remove the shuttle (12),
spring (13) and control valve (C.V.) compensator (14)
from the frame tilt section casting (10).
2. Remove both socket-head capscrews (15) securing
the seal plate (16) to the section assembly (10).
3. Remove the seal plate (16), spool end (17), spool
cap (18), spring seat (19), spring (20), and another
spring seat (19).
4. Remove and discard the O-rings (21 and 22).
5. Remove the spool cap retainer (23).
6. Remove and discard the O-ring (24).
7. Remove both socket-head capscrews (26) securing
the seal plate (16) to the section assembly (10).
8. Remove the spool cap (25) and O-ring (24). Discard
the O-ring.
Relief Valve
The relief valve assembly (27, Fig. 9– 53) is part of the
attachment and frame tilt section assemblies. The valve
is preset at 3700± 50 psi (255 ± 3,5 bar).
1. Remove the relief valve assembly (27, Fig. 9– 53)
from the applicable section assembly.
2. Grip the housing (40) with a suitable tool and use
another tool to remove the acorn nut (48), revealing
an O-ring (35) and the adjustment screw (47).
Discard the O-ring.
3. Remove the O-ring, then loosen the jam nut (46) and
remove the adjustment screw, jam nut, and another
O-ring (35). Discard the O-ring.
4. Carefully remove the plug (45), O-ring (36), spring
(34), pilot poppet (44), wave spring (32), back-up ring
(31), O-ring (30), spring (33), O-ring (28), back-up
ring (29), and relief valve poppet (43). Discard the O-
rings, back-up rings and wave rings.
Remove the check valve poppet (42), piston (41) and O-
ring (37). Discard the O-ring.
Mid Inlet Section
1. Carefully separate the frame tilt section assembly
(10, Fig. 9– 53) from the mid inlet section assembly
(37, Fig. 9– 54). Remove and discard the O-ring (38).
2. Carefully separate the boom extend/retract section
assembly (8, Fig. 9– 54) with the boom hoist/lower
assembly (9) and outlet section assembly (7) from
the mid inlet section assembly (37). Remove and
discard the O-ring (39).
3. Remove the shuttle (40), SAE plug assembly (41)
and O-ring (42). Discard the O-ring (42).
Boom Extend/Retract Section
1. Carefully separate the boom extend/retract section
assembly (8, Fig. 9– 54) from the boom hoist/lower
section assembly (9) and outlet section assembly (7).
Remove and discard the O-ring (20).
2. Remove the shuttle (21), spring (25) and poppet (24).
Relief Valve
The relief valve assembly (27, Fig. 9– 54) is oriented
toward the rear of the vehicle and is preset at 3750± 50
psi (258 ± 3,5 bar). Relief valve assembly (28, Fig. 9– 54)
is oriented toward the front of the vehicle and is preset at
3200± 50 psi (220 ± 3,5 bar).
1. Use a wrench on the housing (51, Fig. 9– 54) to
remove the relief valve assembly (27 and/or 28) from
the section assembly.
Model 3606 • Origin 10/99