Lexmark 4049LMO Service Manual - Page 139

Preventive Maintenance, Safety Inspection Guide, Lubrication Specifications

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4049-XXX 6. Preventive Maintenance This chapter describes procedures for printer preventive maintenance. Following these recommendations can help prevent problems and maintain optimum performance. Safety Inspection Guide The purpose of this inspection guide is to aid you in identifying unsafe conditions. Use good judgment to identify possible safety conditions not covered by this inspection guide. Refer to the safety reminders for a general checklist. If any unsafe conditions exist, find out how serious the hazard could be and if you can continue before you correct the hazard. Check the following items: • Damaged, missing, or altered parts, especially in the area of the On/Off switch and the power supply • Damaged, missing, or altered covers, especially in the area of the top cover and the power supply cover • Possible safety exposure from any non-Lexmark attachments Lubrication Specifications Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use of lubricants other than those specified can cause premature failure. Some unauthorized lubricants may chemically attack polycarbonate parts. Use IBM no. 10 oil, p/n 1280443 (Approved equivalents: Mobil DTE27, Shell Tellus 100, Fuchs Renolin MR30) to lubricate the areas of contact between: • Gear no. 2 and its stud on the side plate • Gear no. 3 and its stud on the motor bracket • Gear no. 4 and its thrust washer • Gear no. 4 and its stud on the motor bracket • Gear no. 5 and its stud on the motor bracket Preventive Maintenance 6-1

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Preventive Maintenance 6-1
4049-XXX
6.
Preventive Maintenance
This chapter describes procedures for printer preventive mainte-
nance. Following these recommendations can help prevent prob-
lems and maintain optimum performance.
Safety Inspection Guide
The purpose of this inspection guide is to aid you in identifying
unsafe conditions.
Use good judgment to identify possible safety conditions not covered
by this inspection guide. Refer to the safety reminders for a general
checklist.
If any unsafe conditions exist, find out how serious the hazard could
be and if you can continue before you correct the hazard.
Check the following items:
•
Damaged, missing, or altered parts, especially in the area of the
On/Off switch and the power supply
•
Damaged, missing, or altered covers, especially in the area of
the top cover and the power supply cover
•
Possible safety exposure from any non-Lexmark attachments
Lubrication Specifications
Lubricate only when parts are replaced or as needed, not on a
scheduled basis. Use of lubricants other than those specified can
cause premature failure. Some unauthorized lubricants may chemi-
cally attack polycarbonate parts. Use IBM no. 10 oil, p/n 1280443
(Approved equivalents: Mobil DTE27, Shell Tellus 100, Fuchs Reno-
lin MR30) to lubricate the areas of contact between:
•
Gear no. 2 and its stud on the side plate
•
Gear no. 3 and its stud on the motor bracket
•
Gear no. 4 and its thrust washer
•
Gear no. 4 and its stud on the motor bracket
•
Gear no. 5 and its stud on the motor bracket