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 1.
Gasket
10.
Key, machine
2.
Bearing
11.
Ring, pilot
3.
Bolt, socket head
12.
Washer, thrust
4.
Key, machine
13.
Pin
5.
Ring, eccentric
14.
Spring
6.
Rotor set, pump
15.
Collar
7.
Retainer, bearing
16.
Washer
8.
Seal, encased
17.
Capscrew
9.
Shaft
Figure 5-126. Pump, hand, hydraulic.
(d)
Inspect bearings for looseness as sign of
(2)
Disassembly.
wear, or rough turning of rollers. Replace defective bearings.
(a) Remove capscrews (17) and pump
Pack bearings in accordance with LO 551925-204-12-3.
cover, then remove gasket (1).
(e) Inspect shaft for wear at bearing
(b) Remove thrust washer (12), pin (13),
surfaces, or bend in length. Replace a defective shaft.
collar (15), and spring (14). Remove washer (16) then
(f) Inspect collar for wear, spring for
withdraw shaft (9).
weakness or break, and the thrust washer for a deformed
(c) Remove seal (8) from housing, then
face. Replace a defective collar, spring, or thrust washer.
remove retainer (7) and roller bearings (2).
(d) Remove socket head bolt (3), ring,
(4) Reassembly.
Assemble by reversing the
eccentric (5), and rotor set (6) from shaft (9), then remove key
disassembly procedure.
(4).
(5) Installation. Install by reversing the removal
(e) Remove pilot ring (11) as required.
procedures.
(3) Cleaning, inspection, and repair.
c. Steering Valves. Repair the steering valves and
(a) Wash all parts in clean fuel oil and wipe
piping, by replacing fittings and valves as required, and
dry with a lint free cloth.
proceed as follows,
(b) Inspect all parts for gummed rings or
(1) Removal
buildup, or for excessive wear. Use a blunt piece of hardwood
(a) Tag and disconnect all switches and/or
to scrape accumulated gummy rings off of eccentric ring or
fuses to prevent operation while working on the hydraulic
rotor set. Replace worn or defective parts. Use new gasket at
system.
reassembly.
(b) Disconnect any line at a union, near the
(c) Inspect oil seal (8) for deterioration, or
valve or other fitting to be removed.
signs of leaking. Replace a defective seal.
5-182
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