Filter
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32 Assembly
MAN0450 (10/28/2005)
tings securely. Start engine and run at low rpm. Acti-
vate hydraulic circuit and check for leaks.
Figure 21. Open Center Hydraulic Plumbing
HYDRAULIC PUMP INSTALLATION
(OPTIONAL)
Refer to Figure 22.
IMPORTANT
■ Clean all fittings and use care to prevent for-
eign material from entering hydraulic system.
NOTE: Use thread sealant on all pipe fittings.
Install hydraulic reservoir (1) to backhoe mainframe
with carriage bolts (7) and flange lock nuts (8).
Attach elbow (3) to the outlet side of the filter assembly
(4). Make sure elbow points downward. Attach adapter
(6) and hose (23) to the inlet side of the filter assembly.
Attach assembly to top of reservoir with elbow (3).
Install strainer (9), adapter (10), and elbow (11) to the
OUT side of the reservoir.
Attach adapter (15) and elbow (14) to the inlet side of
the hydraulic pump (16).
Attach hose (13) between elbows (14) and (11). Secure
hose ends using hose clamps(12).
Install elbow (17) and hose (24) to the outlet side of the
hydraulic pump.
NOTE: To properly install hydraulic fittings with O-rings,
completely loosen lock nut, screw fitting completely in,
hold in position and tighten locknut using two
wrenches.
Remove 90° steel tubes from the IN and OUT ports on
the backhoe control valve.
Attach hose (23) to the backhoe control valve OUT port
and hose (24) to the IN port.
Attach pump mounting bracket (18) to the hydraulic
pump (16) using two cap screws (19) and lock nuts
(20).
When backhoe is attached to tractor, it may be neces-
sary to reposition filter and hoses to eliminate interfer-
ence.