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Idiomas disponibles
Idiomas disponibles
Outlet check service
Refer to Troubleshooting (page 12) to
determine if outlet check valve (11) is
cause of failure.
Pump will not build up sufficient lubricant
pressure if outlet check (11) is fouled
(† Fig. 2 and Fig. 3, page 10). Foreign mate-
rial may lodge beneath check ball (43) or
between check disc (41) and seat (42) of
bushing assembly. Sealing surfaces of seat
must form a perfect seal.
1 Turn off and disconnect hydraulic and
electric power supply to pump
assembly (8).
2 Standard tools required are bench
mounted vice, set of open end wrenches
ranging from
/
to 1
/
in, large 24 in
7
1
16
2
(600 mm) adjustable wrench and
smaller 10 in (254 mm) adjustable
wrench.
3 Remove hose (2).
4 Remove outlet check assembly (11)
and adapter (10).
5 Remove adapter from outlet check
assembly.
6 Remove outlet connector (45)
from outlet check bushing (40).
7 Remove ball check seat (42) from outlet
connector (45).
8 Pull check disk assembly (41) out of ball
check seat (42).
9 Remove and discard gaskets (39 and 44).
10 Clean and inspect all check
components (40, 41, 42, and 43)
for scoring, damage or any foreign
material.
11 Replace any damaged components of
outlet check assembly.
Replace gaskets (39 and 44).
Reverse above procedure to reassemble.
Torque check assembly to
100 ft-lbf (135 Nm).
Vent valve service
Refer to Troubleshooting (page 12) to
determine if vent valve (32) is cause of
failure († Fig. 4, page 11 and
Fig. IPB 1, page 13).
1 Turn off and disconnect hydraulic and
electric power supply to pump assembly.
2 Standard tools required are bench
mounted vice, set of open end wrenches
ranging from
/
to 1
/
in,
7
1
16
2
large 24 in (600 mm) adjustable wrench
and smaller 10 in (254 mm) adjustable
wrench.
3 Loosen vent hose (1), supply hose (2)
and hydraulic hose (3).
4 Remove bolts (38) and lock washers (37).
5 Remove vent valve (33).
6 Place base of vent valve in vice and
remove connected elbows (36 and 32).
7 Remove hydraulic cylinder (46).
8 Remove piston and u-cup assembly (47)
from cylinder (46).
9 Remove packing assembly (49) from
cylinder. If grease leakage is evident from
side of hydraulic cylinder, replace
packing.
10 Clean and inspect needle (48) and valve
seat (50) for damage by nicks, grooves or
scoring. Replace if damaged.
11 Remove valve seat (50) from valve
body (52). Replace valve seat if damaged.
12 Remove and replace gasket (51) under
valve seat (50).
Reverse above procedure to re-assemble.
1 Needle (48) and inside diameter of
hydraulic cylinder (46) should be coated
with oil or grease to assist in assembly.
2 Tighten valve seat (50) into body (52)
using 25 ft.lbf (34 Nm).
3 Tighten hydraulic cylinder (46) onto valve
body (52) using 100 ft.lbf (135 Nm).
NOTE
Street elbow (36) must be facing down.
Elbow (32) must be rotated
approximately 20° toward vent hose (1)
to prevent excessive rubbing of hydrau-
lic hose on pump.
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