Kato Engineering Standard AC Generator

To Next Page

To Previous Page

Page 13

Mount a dial indicator on the ﬂ ywheel coupling to the face of the

generator half coupling for angular alignment as shown in Figure 7.

Align the engine by rotating the prime mover in 90-degree incre ments

and measuring total indicator runout. Tighten the generator to the base

before taking each set of readings. Raise or lower the generator by

adding or removing shims under the machined feet.

Following the ﬁ nal generator adjustment and runout check, remove

the horizontal shims from the adaptor ﬂ ywheel housing, and move the

generator all the way to the adaptor. Then tighten the fasteners.

Recheck alignment. Make sure angularity (face) total indicated runout

does not exceed 0.005 inch per inch of generator coupling diameter and

parallel (radial) total indicated runout does not exceed 0.005” TIR.

Torque the fasteners to the value shown in Table 3.

Shaft

Flywheel housing

Dial indicator pointer

for angular alignment

Dial indicator pointer

for parallel alignment

Flywheel

Figure 7: Alignment check

IMPORTANT: Clearances between the

adaptor pilot and the ﬂ ywheel housing

recess are designed to meet the tolerance

of 0.001 to 0.015 inches.

Kato Engineering Standard AC Generator - Page 13