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 TM 55-1905-242-14
0212 00
DISASSEMBLY (continued)
NOTE
The pump cartridge assembly is serviced as an assembly. No disassembly or repair of
the cartridge assembly is permitted. If the cartridge assembly is defective, replace it as
an assembly.
4.
Grasp the pump cartridge assembly (4) and pull it from the drive shaft (5) with a twisting motion. If necessary, loosen the
pump cartridge assembly by prying under the flats of the ring with two screwdrivers. Do not disassemble the pump
cartridge assembly.
5.
Remove the shaft key (6) from the drive shaft (5).
6.
Remove the bearing retaining ring (7) and remove the drive shaft (5) and bearing (8) from the pump body (2) by gently
tapping the keyed end of the drive shaft with a soft hammer.
7.
Remove the bearing (8) from the drive shaft (5) only if it will be replaced. To remove the bearing, press it off the drive
shaft.
8.
Remove the washer (9), seal (10), and wiper (11) from the pump body (2).
4
1
2
6 9 10 11
8
7
5
3
CLEANING
1.
If not already on, don chemical protective gloves and goggles.
2.
Clean all metal parts in cleaning solvent and dry with clean wiping rags.
INSPECTION
1.
Inspect the bearing by rotating the bearing and applying pressure. Replace the bearing if any roughness, looseness,
pitting, or cracking is noted.
2.
Inspect the sealing surfaces on the drive shaft for scoring or wear. Replace the drive shaft if it is worn or if the scoring
cannot be removed by light polishing.
3.
Discard all seals and wipers.
ASSEMBLY
1.
Install the wiper (11), seal (10), and washer (9) in the pump body (2). Ensure that the lipped edge of the wiper and seal face
toward the pump cartridge assembly (4).
2.
If removed during disassembly, press the bearing (8) onto the drive shaft (5) and secure it with the bearing retaining ring (7).
3.
Lubricate the lips of the wiper (11) and seal (10) with clean hydraulic fluid. Lubricate the bearing (8) with clean hydraulic
fluid. Install the drive shaft (5) and bearing into the pump body (2). If necessary, gently tap the drive shaft with a soft
hammer to position the bearing in the pump body.
0212 00-2
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