11
DISASSEMBLY
KMBD-240C &
KMBD-400C
1) Disconnect cooling water lines (274 & 181). Do not disturb
cover bushings (120) or it will be necessary to retest cooling coils
for leakage as described in the assembly procedure. Covers
should be re-tested if water is detected in drain oil, (mechanical
seal boosters only).
2) Drain oil from both ends of booster and remove inlet and outlet
port fittings (38 or 48).
3) Remove bolts (93), use jack screw holes to remove seal housing.
Remove cover using jack screws. Seal mating ring will come off
with cover.
4) Remove cap screws (26A & 26B and both end covers (6 & 7).
Two jack screw holes are provided on each other.
5) Remove lockwire (49), socket head screws (66), and drive shaft
(45).
6) Remove flat head allen screws (29) from end of each rotor shaft.
Remove washer (25), spacers (57), and oil slinger (21).
NOTE:
The flat head screws have nylok in their threads and may
be difficult to remove. Strike the head a couple of blows with a
flat face hammer for easy removal.
7) Mark housing, end plates, rotors and gears before proceeding
with disassembly. There are two methods which can be used to
disassemble the rest of the unit. Method “A” requires an arbor
press while Method “B” requires the use of bar or yoke pullers.
8) Align timing marks on gears (Figure 6A). Rotate drive gear
clockwise approximately three teeth and mark a matching
reference line on each gear as shown in Figure 6B. This gear
position is necessary so rotors will clear and not jam. Do not
allow the gears to move from the matched reference line while
pulling. Use a light rocking motion to insure that the lobes have
not jammed. Remove driven gear first then drive gear.
WARNING:
Failure to properly pull this gear could result in
damage to rotor keyway or a bent rotor shaft. Never use excessive
force.
9) Remove button head allen screws (30) and bearing retainer rings
(14) from both end plates.
10) Attach a pair of bar pullers to the bearing bores of the free end
plate. Use 10-32 x 4” long screws. Alternately push both rotors
from the end plate. Separate end plate from housing.
