IOM/CPHM/DEC19/01
ISSUE DATE:14-12-2019
Page
22 | 48
REVISION NO.1
c) Fit throat bush (350) into casing cover and tighten the hex. socketed screws.
d) Put the gasket for the shaft sleeve and impeller (515) on the shaft sleeve (311)
step.
e) Push impeller (151/153) on shaft till it touches the shaft sleeve.
f)
Fix the impeller nut (330) along with helicoil mid grip insert after gasket (682)
in between impeller hub and impeller nut. Refer to figure for impeller fixing
arrangement and helicoil mid grip insert.
g) Tighten the grub screw on the labyrinth type deflector (for CPHM-11 and
CPHM-13 unit pumps only).