TM 5-3610-286-20
1-8.
Location and Description of Major Components (cont).
(9) Impression cylinder group (09).
(a) Impression cylinder control mechanism. Located on operator’s side frame behind upper
and lower guards. Controls impression ON/OFF modes of the printing press. An electromagnet
controls a series of levers which control position of blanket cylinder to impression cylinder.
(b) Impression cylinder assembly. Located behind the ranger drum. This gear-driven
cylinder has grippers which are opened and closed by a cam to grip blank sheets of paper. Impression
cylinder receives sheets from ranger drum. The paper wraps around the impression cylinder, which
presses it against blanket cylinder. The paper is then passed on to delivery grippers.
(c) Engaging lever latch assembly. Located on drive side frame behind guard and shelf
assembly. Latch locks system for impression-ON operation.
(10) Blanket cylinder group (10).
(a) Spindle and bearing belt assemblies. Located on both sides of the blanket cylinder.
Controls the blanket-to-impression cylinder pressure for printing. Contains a cam system which
positions blanket cylinder close to or further from impression cylinder as operator adjusts spindle.
(b) Deflector assembly. Located between plate and blanket cylinders. This safety device,
when tripped, stops all printing press functions. This prevents personnel injuries and damage to
cylinders.
(c) Safety limit switch. Located behind upper guard. Trips off printing press when deflector
is moved. Operates through cam which is attached to deflector assembly.
(d) Blanket cylinder assembly. Located below plate cylinder. Houses blanket clamps which
hold blanket in position. This gear-driven cylinder is adjustable to impression cylinder through the
spindle and bearing bolt assembly.
(e) Cover plate assembly. Located on operator’s side of blanket cylinder. Reduces end play
of blanket cylinder. Consists of needle bearing, shims, and cover plate.
(f) Blanket clampshaft and bearing assembly. Located on operator’s side of blanket cylinder
bearer. Consists of a bearing housing and worm gear which control blanket clamp movement.
(11) Main Lubrication System (11).
(a) Gear box assembly. Located on drive-side frame behind flywheel. Main driving unit of
printing press. H houses main driving gear, oil resevoir, oil filter, and oil pump.
(b Lubrication distribution system. Located throughout the printing press. Consists of a
manually operated valve, numerous oil distributors and oil lines. These lubricate bearings, gears,
cams, and levers when valve is operated.
(12) Main motor and drive assembly (12).
(a) Main motor. Located under feeder tape table between feeder and printing press. Electric
motor provides main drive power for cylinders, rollers, and suction head.
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