Bell & Gossett MK MV (8202, 8202X) - Manual (Page 41)

a) Remove the pump housing screws.
b) Lift off the drive unit from the pump housing.
2. Remove the impeller:
a) Place the drive unit horizontally.
b) Remove the impeller screw.
c) Remove the impeller, the washer, and the conical sleeve.
Install the impeller: D, K
1. Fit the impeller:
a) Grease the conical sleeve, the washer, and the impeller screw.
b) Fit the conical sleeve, the washer, and the impeller screw to the shaft.
c) Fit the impeller.
d) Hand-tighten the impeller screw to prevent it from falling off.
2. Fit the pump housing:
a) Grease the pump housing screws.
b) Raise the drive unit.
c) Place the drive unit into the pump housing.
d) Tighten the screws in diagonal sequence.
Tightening torque: 57 Nm (42 ft-lbs)
3. Adjust the clearance between the lower edge of the impeller and the pump housing
by sliding the impeller on the shaft until it touches the pump housing.
4. Fasten the impeller by tightening the impeller screw.
Tightening torque 65 Nm (48 ft-lbs)
5. K-impeller: Check the clearance (A) between the impeller and the pump housing.
A: 0.2–0.8 mm (0.008–0.032 in.)
A
WS001288A
6. Check that the impeller can rotate freely.
CAUTION:
Beware of the pinch point hazard between the rotating impeller and
the guide pin.
Maintenance
MK, MV (8202, 8202X) Installation, Operation, and Maintenance Manual 39