Assembly To Prime Mover - Marathon Electric MAGNAMAX Installation, Operation And Maintenance Manual

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3. Reconnect exciter leads, PMG leads and
other accessories according to the
connection prints and markings installed
before disassembly.

ASSEMBLY TO PRIME MOVER

1. Attach a suitable hoist to the generator
lifting lugs, and move the generator until the
generator foot mounting holes are aligned
with the base and slightly above.
2. For single bearing generators, if the
screen assembly is mounted on the adapter,
remove the mounting bolts and remove the
screen. (Figure 6-79.)
Figure 6-79
(NOTE: Do not remove the drip cover from
the screen assembly if so equipped.)
Insert two guide pins in the flywheel and
two in the flywheel housing. Adjust the
generator position until the drive discs are
piloted in the flywheel. Remove the guide
pins and secure the discs with Grade 8 place
bolts and hardened washers or Grade 8 cap
screws and heavy series lockwashers.
Torque per specifications given in section
12.
Position the generator so that the SAE
adapter mates with the flywheel housing.
WARNING
DO NOT APPLY ANY FORCE TO THE
GENERATOR FAN FOR LIFTING OR
ROTATING THE GENERATOR
ROTOR. DISREGARDING THESE
INSTRUCTIONS MAY CAUSE PER-
SONAL INJUY OR EQUIPMENT
DAMAGE.
CAUTION:
DO NOT FORCE THE ALIGNMENT
OFTHE UNITS. SHIFT THE
GENERATOR FROM SIDE TO SIDE
OR RAISE OR LOWER WITH A
LIFTING DEVICE AS NECESSARY.
It may be necessary to use shims under the
mounting feet of either the generator or the
prime mover to obtain proper alignment.
Use the same shims as removed under dis-
assembly or proceed as follows: Using the
extreme bottom four cap screws, mount the
SAE adapter to the flywheel housing.
With a .0015 to .002 inch feeler gauge at the
extreme top of the adapter to flywheel
housing fit, raise the generator or lower the
prime mover until the gauge is snug. Relieve
just enough to release the feeler gauge and
torque the remaining SAE adapter cap
screws to the flywheel housing.
Mount the screen assembly and tighten the
mounting bolts.
For two-bearing generators, align the coup-
ling halves or sheaves between the generator
and the prime mover by adding shims under
the feet.
3. Shim under the generator feet for proper
support, ensuring that the generator
mounting surfaces are level.
48

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