SR 4 GENERATOR
DISASSEMBLY AND ASSEMBLY
(ALIGNMENT OF SINGLE-BEARING GENERATORS
TYPICAL)
NOTE: For information or alignment
of two bearing generators makes
reference to Form No. SEHS7073.
Typical installation and alignment procedure for
electric sets with single-bearing generators. Do not start
the alignment procedure until the electric set is
permanently installed. If the electric set is moved to a
different location, check the alignment and make any
corrections necessary. The alignment between the
generator and the engine must be correct to get
maximum performance and long life from the electric set.
INSTALLATION OF THE GENERATOR
REAR OF ENGINE
A. Pilot bore. B. Surface.
1. Remove all dirt, burrs and paint from the contact
surfaces of the generator supports and the base.
FRONT OF ENGINE
1. Indicator group. 2. Crankshaft pulley.
Remove the protection material (compound) from the
flywheel pilot bore (A) and from the surface (B ) that
makes contact with the coupling. All contact surfaces of
the engine, coupling and generator must be completely
clean.
2. Remove the timing pointer cover from the flywheel
housing. Install indicator group (1 ) as shown on the
front of the engine with the tip of the indicator on the face
of crankshaft pulley ( 2). Use a bar between the flywheel
and flywheel housing to push the crankshaft toward the
flywheel to remove all end play. Put the dial indicator in
the "zero" position. Move the crankshaft to its most
forward position, and make a record of the Total
Indicator Reading (TIR). The TIR is the end play of the
crankshaft.
FRONT OF GENERATOR
3. Plate assembly. 4. Shim pack.
3. Put plate assembly (3) in position in the bore of the
flywheel to check for clearance. There must be
clearance between the outside diameter of the plate
assembly (3) and the inside diameter of the bore in
the flywheel.
NOTICE
Damage
to
the
engine
and/or
generator can be the result if the
electric set is run with a plate
assembly that does not have this
clearance.
4. Install a full shim pack (4) and plate assembly (3) on
the generator with bolts (5). On D379, G379,
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