Johnson Pump MCHC, Instruction Manual

Page: 40 / 86

MCHZ/EN (0912) 4.2
Disassembly and assembly 39
MCHZ
7.6.6 Assembling the bearing construction on the drive side
See figure 13.
1 Fit the rubber V-ring (0250) over the pump shaft on the drive side, with the narrow
opening pointing to the inside of the pump.
2 Fit an internal circlip (0240) into the inner groove in the long bearing housing (0020)
and fit the bearing cover (0120) to the inside of this bearing housing.
3 Fix the bearing housing (0020) to the pressure bracket with the bolts (0300).
4 Fit the external circlip (0230) into the inner of the 2 grooves on the pump shaft on the
drive side and then fit the filling ring (0110).
5 Grease the bearings on both sides with ball bearing grease. For the correct type of
grease see paragraph 10.6 "Post-greasing of ball bearings".
!
Attention: Both bearings have to be fitted in X-arrangement. This means that
both bearings have to be turned with the largest diameters facing each other.
6 Fit the first of the two bearings (0220) over the pump shaft and into the seat of the
bearing housing using a suitable assembly bush which rests on both the inner and
outer rings of the bearing.
7 Fit the spacer sleeve (0070) and fit the second of the two bearings (0220).
8 Fit the other filling ring (0110) and external circlip (0230) to the pump shaft.
9 Fit the waved ring (0170) into the bearing housing.
10 Fit the outer bearing cover (0080) with bolts (0310). Fit the rubber V-ring (0240),
with the narrow opening pointing to the outside of the pump.
Figure 13: Assembly of the reinforced bearing construction.