MEASURING RAIL-TO-ROLLER CEARANCE - TM-10-3930-647-14-P0390

By prying the rails to the right, we move all clearance to

the left side . . .

. . . by prying rails left, we have all clearance at the right.

In this way rail-to-roller clearance for each roller set IS

easily measured . . . as your'll see in a moment.

But obtaining the value for rail-to-roller clearance at only

one point is not always satisfactory, since rails cannot be

made or welded perfectly parallel.

measurement . . . rail-to-roller clearance is checked at more than one

place for each roller set. Clearance is checked with:

- - upright lowered,

- - at one-half extension and,

- - at full extension

-- for EACH ROLLER SET.

rails are welded in a slight "A" configuration . . . to make clearance minimal at

maximum upright extension.

5-160