Repair manual

PS2 3703, PS3 3703, PS4 3703, PS3 5503, PS4 5503 Repair

Repair.fm 167

17.Position the key (bb) properly in the keyway of the rotor shaft.

18.Align and install impeller (az) over keyway of rotor shaft.

Note: Impeller vanes may be very sharp due to excessive wear.

Handle with care.

19.Install thread cover (al), lockwasher (am) and acorn nut (an).

20.Using a pneumatic wrench, tighten acorn nut (an).

21.Install gasket (ao), and suction cover (ap) to volute (av).

22.Secure suction cover (ap) with three bolts (bx) and three washers

(by).

23.Measure the distance between the impeller (az) and the volute (av)

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.

wc_gr000639