Assessments - 3, GPA: 4.3
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7. Apply thread lubricant to the screws (15) and install them with the lockwashers (16) in the pump housing. Torque the screws a few inch–pounds (N.m) at a time, oppositely and evenly, to 85 in–lb (9.6 N.m). 8. Spin the motor shaft (D) to be sure it turns freely. 9. Reinstall the front cover (23). Priming Valve & Tube (See Fig 15.) NOTE: Each new priming valve kit includes a priming tube and fittings. 1. Unscrew the nut on the handle (E) of the priming valve (10a). Unscrew the stem of the handle. 2. Screw the priming valve (10a) out of the pump housing (9). 3. Wrap the threads of the priming valve with tape. Screw the valve snugly into the pump housing PTFEPTFEPTFE(9). The valve handle should be parallel with the angled edge of the housing to avoid interference with the inlet or outlet valves. 4. Slide the nut (10d) and ferrule (10c) onto the tube (10e). Install the tube support (10b) in the end of the tube. Screw the nut onto the priming valve, which will seat the ferrule. 5. Screw the stem of the handle (E) onto the priming valve until it bottoms, and then back it out two turns. Hand tighten the nut onto the priming valve, and then tighten the stem into the valve. . . Fig 14 44 45 47 46 11 17 18 9 23 24 D LUBRICATE THREADS; TORQUE TO 85 in–lb (9.6 N.m) 15,16 45 46 1 9 10 10e 10d 10c 10b 10a WRAP WITH TAPE E 47 48 49 PTFEPTFEPTFE Fig 15 . Suction Tube (See Fig 15.) 1. Unscrew the nut (45) from the fluid inlet valve housing (1). Remove the hose clamp (47). Slit the suction tube to free the nipple (46). 2. With the nipple (46) inserted through the nut (45), dampen the new hose (44) with warm water and press the hose over the nipple. Screw the nut onto the inlet valve housing (1). Press the hose further onto the nipple, leaving about a 1/8 in. (3 mm) gap between the nut and hose end. 3. Install the hose clamp (47) and tighten snugly. 4. Remove the filter housing (48) and filter (49) from the old suction hose. Install these parts on the new hose. Dampen the hose with warm water to ease the filter and filter housing onto the hose. Connecting Rod and Bearing (See Fig 16.) QTY 2 17 1. Remove the front cover (23). Remove the screws (15). Carefully tip back the pump housing. Unscrew the diaphragm (17) and discard it. CAUTION Replace the diaphragm whenever you remove the pump housing (9), or after each 100 hours of use, whichever comes first. During use, small grooves are formed in the diaphragm which cannot be realigned properly. Reusing a diaphragm may cause leaking, resulting in costly pump damage. 2. Remove the motor screws (20). Lift the motor (30) slightly. Holding the connecting rod (18a), pull the motor away from the housing (22). 3. Inspect the bearing (18b) in the connecting rod (18a). If it is worn or any rollers are broken, replace the connecting rod assembly (18). Inspect the motor eccentric, and replace the motor if the eccentric is worn. 4. Use your fingers to pack high quality bearing grease thoroughly in between the bearing rollers. CAUTION Thoroughly grease the bearing to extend the life of the bearing and the motor eccentric. 5. Use a soft brass or nylon bristle brush to clean the top of the connecting rod and housing. Taking care not to damage the diaphragm grooves, gently clean the bottom of the pump housing (9). 6. Install the connecting rod assembly (18) in its housing (22). Screw a new diaphragm (17) into the rod just until it bottoms. T urn the diaphragm another 1/8 to 1/4 turn [about 4–6 in–lb (0.4–0.7 N.m)]. CAUTION Never turn the diaphragm more than 1/4 turn when torquing it, as that will prevent the diaphragm from working properly. 7. Align the motor with the pins in the connecting rod housing (22). Guide the motor shaft (A) through the connecting rod bearing (18b). Spin the motor shaft to besure it moves freely. 8. Loosely install the lockwashers (21) and screws (20) to hold the motor. Spin the motor shaft again. Alternately tighten the screws. Spin the motor shaft again. CAUTION Spinning the motor shaft while assembling the pump ensures that parts are properly aligned. If they are not, and you start the pump, serious damage could result to the motor , bearing and connecting rod. If you feel binding or resistance, disassemble the parts, checking the spin often, until you determine and correct the cause of the binding. 9. Position the pump housing (9) on the connecting rod housing. Lubricate the screws (15) and loosely install them and the lockwashers (16). Torque the screws a few inch–pounds (N.m) at a time, oppositely and evenly, to 85 in–lb (9.6 N.m). 10. Reinstall the front cover (23). Fig 16 9 LUBRICATE TORQUE TO 85 in–lb (9.6 N.m) 15,16 42 43 33 22 24 23 69 34 30 21,20 18a 1818b PRESS FIT INTO 22 GREASE BEARING HEAVILY A 39 IN OUT MOTOR LEADS Fig 17 RED (+) Motor (See Fig 16 and 17.) 1. Remove the front cover (23). 2. Remove the base cover (42). Disconnect the motor leads from the positive and negative rectifier terminals. See Fig 17. 3. Remove the motor screws (20). Lift the moto...
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