Preventive Maintenance - IBM 5256-1 Maintenance Information Manual

Perform preventive maintenance (PM) for the printer on
any 01 call if a check of the incident reports shows that
more than 30 months passed since the last PM on 40
and 80 cps models (15 months on 120 cps models).
Unit Operation
Ribbon drive Replace the lines.
Lubricate the feed roll shafts.
Clean the ink from the ribbon guides.
CAUTION
Excess oil will bleed to the ribbon and cause light
and dark printing.
Print head
Clean the wire guide tip and the side grooves.
Check the print for variations in density.
Lubricate the oil felt.
Lubricate the support bars.
Forms tractor unit Lubricate the shafts.
Back cover
Change or clean the filter in the right rear
corner (as viewed from the front).
Print emitter Lubricate:
Pickup pads.
Contact points (7) between the emitter board
and the side frame.
Horizontal fine adjustment threads and shaft sides.
Carrier drive
Lubricate the belt tensioner shaft.
Forms feed drive
Lubricate the idler gear stud.
Platen
Lubricate the bushings.
Power supply
Check the fan operation (2 places).
Support bars (2)
D
Preventive Maintenance
Lubricant Notes
See 173.
IBM No. 23
Light film.
Variations could
indicate print wire wear.
IBM No.6 See 163.
IBM No.6 Drop.
IBM No. 23
L:ight film.
IBM No. 23
Light film.
IBM No. 23
Light film.
IBM No. 23 Light film.
IBM No. 23 Light film.
IBM No.6 Drop.
IBM No. 23
Light film.
IBM No.6 Light film.
IBM No.6
Light film.
Preventive Maintenance 5256 MIM 2-1
PM, Tools