MEASURING RAIL-TO-ROLLER CLEARANCE - continued

. . . and then pry the intermediate and Inner rails left, and

make a parallel mark.

Measure the distance between the marks with a rule end record

the distance directly under the scribe marks.

Then raise the upright to full extension and shut off the

t r u c k . P r y left, make a mark -- pry right, make a second

mark, and record the distance between them.

In this example the clearance of the top of the outer rails

with roller set at the LOP of the intermediate rails is

7/32nds of an Inch, 5/32nds of an inch, and 4/32nds of

an inch, when measured with the upright down, et one half

extension and fully extended.

Here we've re-written the values to make them more readable.

Remember that clearance is always written on the rail that

the rollers are attached to. These rollers are on the top

o f the outer rails . . . so we've written clearance values

on the top of an outer rail. We shim to the smallest value,

which is 4/32nds of an inch.

5-166