Left Sensing Finger Adjustment; Primary Secondary Cam Assembly Adjustment - IBM C-1 Customer Engineering Reference Manual

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CEM 550, page 2

Left and Right Tension Springs. Adjust the retaining collars so

they are approximately 1/4" from the mounting bracket. Be

sure there is equal tension on both sides (Figure I).

Spool Gears. Adjust the mounting brackets for minimum back-

lash but smooth operation for 360

(Figure I).

Left Sensing Finger. There are two adjustments for the sensing

finger. I. Form the sensing finger so it centers between the

spool flanges. 2. The sensing finger extension should be formed

;

so that it unlatches the reverse lever when the tip of the sens-

ing finger is 1/8"

1/16" from the spool shaft (Fig I & 2).

UNLATCHING POINT

Figure 2

Drive and Check Clutches.

Adjust for minimum lost motion

without binds.

Primary Secondary Cam Assembly. Position on its shaft so when

the secondary cam is on its high point there is no remaining

(",

"Ieft-to-right" motion of the drive shaft. Do not spring the

bearing support (Figure 3).

Figure 3

Drive Shaft Collar. With the reverse lever unlatched, adjust

the collar so there is .002" to .005" clearance between the pri-

mary cam and keylever bearing support. Check both lobes (Fi g 4).

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