Oil seal(14) is a combined seal. The seal lip toward the pump shaft provides oil
tightness and the seal lip outward mainly prevents enterance of dust (See Fig.9-16).
Inspect the seal for flaw, wear or deformation and also its rubber to see if it has
sufficient elasticity. If any defect is found, replace with new one.
b) Packing ring(8) and (9)
Pump body packing ring(8) and bushing packing ring(9) should be replaced with
new ones before reassembling the pump.
c) Packing rings(10) and (11)
Check for wear or breakage.
9.8.3 Reassembly (See Fig.9-17)
Fig.9-17
(1) Clean disassembled parts.
(2) Apply a thin coat of clean grease on the lips of packing ring(8), (9), (10), (11)
and (14).
(3) Put pump body(2) on a plain stand with cover(1) upward. Put clean hydraulic
oil on the inner surface of the pump body.
(4) Hold bushings(3) and (4) properly in the pump body. Notice not to have the
wrong arrangement of them. If they are difficult to be installed, pull them out and try
again. Do not tap or press by force.
Bearing
Driving gear
Driven gear
Location pin
(on the inlet side)
No clearance
Inlet side
-84-
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