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Preventive Maintenance
Approach to Preventive Maintenance
The prime objective of any maintenance activity is to pro-
vide maximum machine availability to the customer. Unless
a preventive maintenance operation reduces machine down-
time, it is unnecessary.
Do not adjust or disassemble a unit that is working prop-
erly, even if tolerances vary from specifications.
Be visually alert for trouble indications any time you
service the machine. Look for corrosion, wear, cracks,
burned contacts, and loose connections. Watch for filters
clogged with dirt.
Preventive Maintenance Procedures
The three basic steps of preventive maintenance are clean,
lubricate, and inspect. Do not do more than scheduled pre-
ventive maintenance on equipment which is operating satis-
factorily. Refer to Figure 1.
Apply lubrication only in the quantity necessary to
supply that immediate area involved. Wipe off excess. On
the 1403, special care must be taken to keep lubricants
away from:
Ribbon
Cover seals
Paper path
Rubber dampers
Electrical wiring
Grommets
Magnetic clutch disk
P M ROUTINE
CODE
UNIT
FREQ
(Weeks)
LUBRICATE
CLEAN
OBSERVE
5
DRIVE
Type Array
Type Array
Drive
4
Fill right oil reservoir in T-
casting 06.
Clean type array with vacuum
cleaner as required.
Check that reservoir never
runs dry. Check that oil is
being used (reaches chain).
Fill plastic oil reservoir at
rear of T-casting 09.
Check that reservoir never
runs dry. Check that oil is
being used.
2
PRINT
Ribbon
Toggle plate pivot 06.
Reverse toggle spring anchor
024. Skew roller pivot 06.
Sense finger pivot 06,
Excessive oil and grease must
be wiped from all areas to
prevent any contamination of
ribbon.
Check for wear.
5
DRIVE
Ribbon
Drive Unit
-
13
All gears 070 (light film), All
bearings, pivots, and clutch
shafts 0
6.
Friction disk inter-
poser stud and ball 06.
Pinion spline 06.
Keep friction drag surfaces oil
free. Excessive oil and grease
must be wiped from all sur-
faces to prevent any contain-
ination of ribbon.
Check for wear and binds.
Check for correct operation.
Lube only when
surface appears dry.
0
BLOWERS
Hammer Unit
Replace blower air filter as
necessary.
1
FEED
Tractor
Stacker
Light film of lubriplate 070
on tractor drive gears,
tractor ramps, and tractor
shafts.
Check tractor adjustments as
required.
Bevel drive gears 070. (Use
light film of grease only).
Friction drive shaft 06. Lift
shaft ' 0 6.
Clean as necessary.
Check for broken friction
springs as required.
Check for wear on friction
drive roll.
2
PRINT
Hammer Unit
Strip residual
and strip re-
sidual fasten-
ing bands
Type Array
Drum
Hammer magnet armature
pivots 06. Hammer surfaces
that contact armatures (light
film 06.)Armature backstops
(light film 06.)
Check for loose hammers.
Check for loose magnet coils.
Check for worn residuals on
hammer magnet face (core).
Replace every 26 weeks
Clean type array with vacuum
cleaner as required.
Check for proper tension in
chain (316" sag of slugs at
front of type array when type
array is held with front side
down).
Wipe off surface of timing
disk with clean cloth.
Check and clean as necessary.
3
EMITTER
Emitter
Contact Rolls
26
Emitter surface #6 (light
film)
Check for worn brushes.
Check for pitted surface.
Contact roll bearings 06.
Clean contact rolls as necess-
ary.
Check tape brushes for loose
strands.
5
DRIVE
Ribbon
Drive Unit
Hydraulic
Unit
6-8 Line
Drive
Ribbon drive motor (2 all
cups) 06.
Blower motor (2 oil cups) 06.
Check timing belt for tension.
Only when leakage is appar-
ent, check proper hydraulic
fluid level. (Approx. to
bottom of coils).
Light film 070 on active sur-
faces of all gears, shift fork,
summing plate, and detent
wheels.
Detent arm pivots and rollers
06.
Check for correct operation.
9
MISC
Frame
T-Casting
Ph eonolic
Support
Chock
Use light film of 0
24
on act-
ive surfaces of gears, slides,
guides, and levers as re-
quired. Use 06 on bearings,
bushings, and pivots as re-
quired.
Check for and binds.
Check adjustments as required.
1403
Figure 1. IBM 1403 PM Routine
PREVENTIVE MAINTENANCE
5
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