3-23. CRANKING CONTACTOR (cont)
33. Measure tip break as follows:
Check that the contactor armature is against the stop when making the
measurement; otherwise, the reading will be false.
Measure the tip break (air gap) at the point of minimum spacing when tips are open.
Tip break shall be 14/32 to 19/32 inch (11.11 to 15.08 mm) for worn contactor and 15/32 to 18/32 inch (11.09
to 14.28 mm) for new contactor.
If the tip break is not correct, check for the following conditions:
Worn or bent contact tips
Bent armature stop
Worn or bent contact lever
d. Adjust gap by bending the armature st
34. Measure tip alinement and adjust as follows:
The maximum allowable side-to-side misalinement of the contact tip is
3/32 inch (2.38 mm).
Check tip for misalinement. If necessary, loosen the screws holding the magnet frame and stationary contact-
tip support to the block and move the assembly until tips aline properly.
b. If tip misalinement cannot be corrected, check for the following conditions:
Grooving or uneven wear of the armature stop
Rounded knife edge or unevenwear of the armature pivot point
Grooving or uneven wear of the armature guide