Generator Regulator - TM-5-4320-240-150092

Figure 6-4. Generator regulator air gap and voltage setting.

6-5. Generator Regulator

(6) Inspect the drive assembly for cracks,

breaks, clutching action, or other damage; replace the

drive assembly if any parts are damaged.

a. General.

Refer

for

description.

(7) Check the armature and field windings for

short circuits, grounds, and open circuits using the same

b. Testing and Adjustment.

method described for the generator parts in paragraph

6-3f. Replace the starting motor if the armature of the

(1) Refer to figure

3-21

and

remove

field windings is shorted, grounded, or open.

generator regulator cover.

(2) Refer to figure 6-4 and check the air gap

g. Assembly. Assemble the starting motor in the

of the cut out relay unit. With the battery disconnected,

reverse order of disassembly. If the drive is manually

measure the air gap between the armature and the core

rotated to locked position, do not attempt to force it in a

(not between the brass pin in the armature and the core)

reverse direction. Proceed to install with pinion meshing

with the contact points barely touching. If all sets of

with flywheel ring gear. When engine starts, the drive

points do not close together, realine the lower contact

will return to the neutral position.

bracket slightly until all points do meet simultaneously.

h. Installation. Refer to figure 3-22 and install the

Adjust air gap to .048 inch by loosening the two screws

starting motor.

attaching the lower contact bracket, and raise or lower

the contact bracket as required. Be sure the points

6-5