TM 5-3610-286-20
2-85.
Suction Head Assembly (cont).
c. Aline.
(1) Forwarding roller adjustment. (figure 2-238)
NOTE
If suction head is not working properly, adjust forwarding roller before making
any adjustments to suction head assembly.
(a) Turn feeder handwheel until both forwarding rollers (1) are parallel to roller shaft and in
their lowest position.
(b) Loosen nut (2) and turn forwarding roller adjusting screw (3) until there is a 0.3 mm
clearance between lever (4) and adjusting screw (3).
(c) Turn handwheel and verify that forwarding rollers (1) touch roller shaft simultaneously.
Slightly turn appropriate adjusting screw (3) to correct any imbalances.
(d) Turn on compressor and suction air unit.
(e) Turn handwheel until forwarding suckers lift sheet. Continue turning handwheel forward
until forwarding suckers are just releasing sheet.
(f) Using feeler gage, measure clearance between rollers (1) and roller shaft. If 2 mm
clearance is not obtained, correct timing difference by loosening two cap screws and
adjusting the universal joint drive shaft flange at suction head.
2-482
