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 TM 55-1905-242-14
0206 00
CLEANING
1.
Don protective gloves and goggles.
2.
Clean all metal parts in cleaning solvent and dry them with clean wiping rags.
INSPECTION
1.
Discard and replace the old seal (27) and O-rings (15, 16, and 19).
2.
Check the bearings (24 and 28) for wear and looseness. Check for pitted or cracked races, needles, and balls.
3.
Check the body (2), pressure plate (10), cam ring (11), and rotor (13) for scoring and wear.
4.
Inspect the seal mating surface on the shaft (23) for scoring. Inspect the shaft for burrs or nicks. If marks on the shaft
cannot be removed by light polishing, or if the shaft is scored, replace the shaft.
5.
Inspect the vanes (14) for burrs, wear, and excessive play in the rotor (13) slots. Replace the vanes and rotor if the slots
are worn. Replace the vanes if the vanes are worn.
6.
Insert the control valve (20) into its bore in the cover (7). Rotate the control valve through 360 degrees while moving it
in and out of the bore to check for binding. Check the control valve for wear and replace it if it is worn or binding.
ASSEMBLY
1.
Press the needle bearing (28) into the body (2) if it was removed during disassembly.
2.
Position the shaft seal (27) with the spring side of the seal facing toward the needle bearing (28). Press the shaft seal
into place until it engages the shoulder within the body (2).
! CAUTION
When pressing the bearing onto the shaft, apply pressure only to the inner bearing race.
Applying pressure to the outer bearing race can damage or destroy the bearing.
3.
Press a new bearing (24) onto the shaft (23) if the bearing was removed during disassembly. Take care to apply pressure
only to the inner bearing race.
4.
Install the retaining ring (26) on the shaft (23) with the sharp edge facing away from the bearing (24).
5.
Slide the shaft assembly (23, 24, and 26) into the body (2).
6.
Install the retaining ring (22) into its groove in the body (2) with the sharp edge facing away from the bearing (24).
7.
Insert the woodruff key (25) into the shaft (23) and tap it gently into place.
8.
Install the body (2) in the vise with the shaft end facing down. Install the O-rings (15 and 16) into their grooves.
9.
Insert the vanes (14) into the rotor (13) with the radius edge toward the cam ring (11).
10. Place the rotor (13) and vanes (14) over the shaft (23) and onto the body (2) with the rotor counterbore facing the
body.
11. Insert the pins (12) through the cam ring (11) and place the cam ring over the rotor (13) and vanes (14). Align the
matchmarks made during disassembly.
0206 00-3
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