SR 4 GENERATOR
DISASSEMBLY AND ASSEMBLY
clearance over the entire length of the supports.
This is especially important on generators with
long supports (10). Install shims as necessary
until all of the mounting surfaces are fiat and
parallel.
View A-A.
e.
Tighten all bolts that fasten the engine and
generator supports to the base to one-half of
their final torque. Loosen all bolts (7), and check
the gap (D) between the generator and the
flywheel housing at location (E), (F), (G) and (H).
Location (E) must always be at the top. Make a
record of each measurement.
f.
If the gap at location (E) is larger than the gap at
location (G) by more than .005 in. (0.13 mm),
install an equal amount of shims under each
generator support as necessary. If the gap at
location (G) is larger than the gap at location (E)
by more than .005 in. (0.13 mm), remove an
equal amount of shims from under each
generator support as necessary. After a
correction has been made to shim thickness,
tighten the generator support as necessary.
After a correction has been made to shim
thickness, tighten the generator support bolts to
one-half of their final torque and again check the
gap at location (E) and (G). Use this procedure
again and again until the difference in gap
measurements is .005 in. (0.13 mm) or less.
g.
If the gap at location (F) is larger than the gap at
location (H) by more than .005 in. (0.13 mm),
loosen the bolts in the generator supports and
move the rear of the generator to the right. If the
gap at location (H) is larger than the gap at
location (F) by more than .005 in. (0.13 mm).
loosen the bolts in the generator supports and
move the rear of the generator to the left. Do
this procedure again and again until the
difference in gap measurements is .005 in. (0.13
mm) or less. Tighten bolts (2) to their final
torque.
h.
Install a dial indicator on base (12) with the
indicator tip next to a support mounting bolt.
Tighten this bolt to its final torque, and at the
same time check the indicator. If there is more
than .005 in. (0.13 mm) of indicator movement,
the shim thickness is incorrect under that bolt.
Install shims as necessary. Do this procedure
again and again until all engine and generator
support-mounting bolts have been tightened to
their final torque and support deflection is within
specification.
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