Repair manual

PS4 7503HH, PS4 7503HF, PS4 11003HH, PS4 11003HF Repair
Repair.fm 203
4. Using a pneumatic wrench, tighten acorn nut (be).
5. Install gasket (bf), and suction cover (bg) to volute (bn).
6. Secure suction cover (bg) with three bolts (bb) and three washers
(ba).
7. Measure the distance between the impeller (br) and the volute (bn)
after assembly. Keep a recommended clearance of 0.3–0.5mm
(0.118–0.196in).
—If the measured distance between the impeller is greater than
0.5mm (0.196in), the pumping capacity drops.
— If the measured distance between the impeller is less than
0.3mm (0.118in), the impeller may contact the volute and slow
rotation, overload the motor causing premature failure.
8. Add or remove additional gaskets (bf) to obtain recommended
clearance.
9. Secure suction strainer (bj) with three stud bolts (bi) and three
washers (bh).
—Longest threaded end goes into volute.
10.Position pump in upright position.
11.Pre-test pump to verify proper operation.