21
rest on top of carbon. Gently press with fingers to insure
compression is taking place and ring is not hung up for any reason.
Slinger Seal Boosters
– Slide slinger (238) over shaft. Also
install spacer (129) if two piece.
6) Lubricate shafts and press the double row ball bearings (9) onto
rotor shafts and into end plate bores.
CAUTION:
These bearings have been flush ground at the factory.
The inner race will have a black dot etched on the surface. This
dot must be up and visible when bearings are installed. Secure
with bearing retainers (14) or (14 & 15) on KMBD-540C and
720C models, locks, and cap screws (61 & 62).
7) Check clearance between the face of the end plate and rotor lobes.
See exploded view for correct gear end clearances. If clearances
are not within specifications, recheck parts to find cause of
improper clearances before proceeding.
8) Insert gear keys (24) in their proper location and flush with top of
shaft. Use the two keyways facing to the right. Tight fit required.
Coat shafts and keys with lubricant.
9) Install drive gear (right hand helix) on drive rotor (left side). To
install driven gear, align reference marks as shown in Figure 10B.
Install driven gear carefully to avoid mashing any teeth when
engaging opposite gear. Secure with gear lockwasher (36) and
lock nut (35).
NOTE:
All timing gears must be used in sets, as they are matched
and serially numbered.
10) Remove assembly from press and stand on work table with gears
facing downward. Place blocks under end plate to prevent
assembly from falling over. Drive gear should remain on left side.
11) Place small bead of sealer around the periphery of the end plate,
encircling each bolt hole. Install rotor housing (3) and secure with
4 screws evenly spaced.
12) Check clearance between end of lobes and housing using a flat
bar and feeler gauges or a depth micrometer. Refer to exploded
view for free end clearances.
13) Place a small bead of sealer around the periphery of the housing,
encircling each bolt hole. Install free end plate and secure with 4
screws.
14)
Mechanical Seal Boostes
– Install mating rings same as gear end,
No. 5.
Slinger Seal Boosters –
Install seal slinger same as gear end.
Install bearing spacers (123) on each shaft.
15) Lubricate shafts and install roller bearings (10).
CAUTION:
Inner race of bearing has a flange on one side only.
This flange must face outward. See Figure 8 on page 17.
Installing Timing
Gears
Housing & Free
End Assembly
