Gardner Denver C2500Q QUINTUPLEX, Operating And Service Manual

Page: 33 / 46

Page 27
Crankshaft Replacement
1. Determine which is no. 1 throw. Place
crankshaft in a vertical position, either
in special fixture or a bull-gear lying flat
on the ground, with the no. 1 throw
down toward or nearest the ground.
2. Heat the bearings uniformly, and install
the second bearing from the end first
and then the outside floating bearing.
3. Reverse position of crank, and repeat
for the floating inside and outside
bearing.
4. Install bearing retainers on both sides of
all installed bearings.
5. Reverse steps 9 through 13 to re-
assemble.
6. Install the snap-rings and braze together
in 3 or 4 places for strength.
WARNING
Do not drive against rollers or bearing
cage. Drive only against the bearing
race, as severe damage to the bearings
could occur.
WARNING
When reassembling the crankshaft
assembly, make sure to follow these
steps:
1.
Pack the bearings in dry ice before
assembling in the frame.
2. Heat the inner bearing races before
installing on crankshaft. (250
°°°°
F
max. oven or oil bath).
3. Braze the retaining rings on the
crankshaft
after installing the
outermost inner bearing races.
Avoid direct contact with the inner
race or the crankshaft.
4. Reinstall the safety wire and/or
Loctite the bolts holding the bull-
gears to the crankshaft.
Failure to follow these directions may
result in serious damage to the pump.