Pump Cartridge Repair-continued

TM 5-4210-233-14&P-1

5-26. POWER STEERING PUMP - Continued

(i) Check wearing surfaces of body (17), pressure plate (8), ring (11), and rotor (15) for scoring and

excessive wear. Light scoring marks may be removed by lapping. Deeply scored or worn parts

warrant replacement of the pump.

(j) Spin shaft and rock shaft end to and fro. Replace pump if bearing is noisy or excessive play is noted

when shaft is rocked.

(k) Push cover (5) onto pump shaft. Rock cover on shaft. If excessive play is noted between shaft

journal and cover, replace pump.

NOTE

During handling and shipping of new cartridge parts, burrs may

be raised on sharp edges. Be sure to remove these burrs before

installing new parts in pump.

(I) Install new O-rings (10 and 11A) in the body and cover. Install ring (11) so that the arrow on the

perimeter points in direction of rotation as noted in step (d).

(m) Install rotor (15) on shaft and insert vanes (16) in rotor slots. Be sure the rounded vane edges are

toward the cover ring.

(n) Place pressure plate (8) on locating pins (21) and flat against ring (11). Position spring (7) on

pressure plate and install cover (5). Be sure cover ports are orientated as noted in step (b).

(o) Install and torque cover screws (1) to 75-85 ft. Ib. (100-1 15 Nm).

(p) Rotate the shaft by hand to ensure that there is no internal binding in the pump. Install shaft key

(14).

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