Steering System Maintenance Instructions (Cont)
Because of oil suction, it may be necessary
to turn body over and tap end of shaft on
wooden block to remove pressure plate.
There are two models of pumps. Model A
uses a coil spring, a pressure plate with
0.0595 in. (1.5 mm) diameter holes and
body with extended hub. Model B uses a
wave spring, pressure plate with 0.312 in.
(8 mm) diameter holes and body with a
short hub. Procedures are the same. Refer
to TM 9-2320-279-24P when ordering
Remove pressure plate (23) and spring (24)
from body (25).
Remove preformed packing (26) from
pressure plate (23).
Remove retaining ring (27). Remove shaft (4) and spacer (28) from body (25).
Remove seal (29) from body (25).
Remove retaining ring (30) and bearing (31) from shaft (4).
Adhesives, solvents, and sealing compounds can burn easily, can give off harmful
vapors, and are harmful to skin and clothing. To avoid injury or death, keep away
from open fire and use in well-ventilated area. If adhesive, solvent, or sealing
compound gets on skin or clothing, wash immediately with soap and water.
Clean all metal parts with drycleaning solvent.
Inspect and replace damaged parts.
Inspect springs for breaks or discoloration. Replace springs if broken or discolored.
Inspect face of pressure plates for grooves. Replace plates if grooved.
Inspect shaft for grooves at seal end. Replace shaft if grooved.
Replace rotors, vanes and ring at each pump rebuild.
Coat all parts with lubricating oil.