TM5-6115-585-34NAVFAC P-8-262-12TO-35C2-3-455-2TM-05684C-34(4) Apply a thin coat of petroleum jelly to thethrust washer (29, figure 7-34) and assemble it to thehub on the face gear (28).(5) Carefully center spring ring (27) on hydraulichead assembly.(6) Position the face gear (28) and thrust washer(29) over the end of the plunger and align the head ofthe plunger sleeve pin with its mating slot located onthe inside of the face gear (28).Do not use excessive pressure. Ifnot snap into place easily, removecheck to see that spring ring (27) isgear willgear andcentered,and that plunger drive pin (1, figure 7-38) isproperly aligned.(7) Press the face gear (28, figure 7-34) onto thehydraulic head (17). Make certain that the spring ring(27) snaps into its mating groove in the face gear (28).Manually operate the plunger up and down. Freemovement of the plunger indicates that the face gearhas been correctly assembled to the hydraulic head.(8) With head still in an inverted position, raiseplunger (35) to its highest position.(9) Apply grease to exposed position of plungerto keep it in its highest position.(10) Install spring (26) and spring retainingwasher (24), snap spring seat (25) into place on theplunger head (35).(11) Install the plunger button (23) onto the endof the plunger and secure it by snapping the springring (22) into its mating groove in the lower springseat (25).(12) Check to make sure that the button springring (22) fits tightly into its groove in the lower springseat (25). Loose spring rings (22) must be replaced.(13) Apply a thin coat of petroleum jelly to thetappet “O” ring (21) and install it into its groove onthe tappet (20). Apply thin coat of petroleum jelly toinside of tappet. Insert the tappet (20) into the facegear (28).(14) Apply a thin coat of petroleum jelly to thehydraulic head “O” rings (18 and 19). Insert “O” ringinto the head bore of the pump housing (6). Install the“O” ring into its groove on the upper portion of thehydraulic head. Ensure “O” rings seat properly.(15) Clamp pump mounting fixture in a vise, in-stall pump housing in fixture, then carefully insertthe hydraulic head into the pump housing so that thelocating slot in the hydraulic head is in line with thelocating screw hole in the pump housing (not seating).7-36(16) Install the head locating screw gasket (14)and the head locating screw (13) into the locatingscrew hole in the pump housing (6). Slight reposition-ing of the hydraulic head maybe necessary to properlyinstall the head locating screw. DO NOT USE FORCE.Tighten screw (13) to a torque of 90 to 100 inch-pound. Install head retaining clamps (16) and screws(15). Alternately tighten screws (15) at opposite cor-ners of housing (6) to properly seat the head assem-bly (17) in the housing. Tighten screws (15) to 13 to15 ft-lbs. Insert the timing screw (31) and its gasket(32) into the timing screw hole in the pump housing.Tighten the timing screw to a torque of 20 to 25 inch-pounds.(17) Install the delivery valve spacer (12), de-livery valve assembly (11), delivery valve spring (10)and delivery valve holder (9), tighten delivery valveholder to a torque of 70-75 ft-lbs. Install deliveryvalve cap nut (7) and gasket (8). Torque nut to 55-60ft-lbs.(18) Insert pin (37, figure 7-34) and flatwasher(38) into lower hole of lever on control unit assembly(4) and secure with lockwasher (39) and nut (40).Tighten to 20-25 inch-pounds.(19) Apply a film of grease, LU 3003, to the con-trol unit “O” ring (33, figure 7-34), then install “O”ring in groove in control unit assembly. Ensure that"O" ring is seated. Apply oil to plunger sleeve pin (5)and insert the plunger sleeve pin (5) into the controlunit assembly (4).Figure 7-39. Control Unit Assembly
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