120 Service Manual
4039-1XX
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 PN
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
•Gear no. 6 and its stud on the motor bracket
•Gear no. 6 and its thrust washer
•Gear no. 7 and its stud on the rail
•Gear no. 7 and its thrust washer
•Gear no. 8 and its stud on the rail
•Gear no. 8 and its thrust washer
•Gear no. 9 and its stud on the rail
•The metering roller shaft and its bushings on the rail assembly
•The main metering backup roller and its stud and thrust washer
•The D-roller shaft and its bushings on the rail assembly
•The auxiliary metering roller and its stud on the rail, including the
snap-in groove and the snap ridges in the roller hole
•Gear no. 14 and its stud on the rail
•Gear no. 13 and its stud on the rail
•The auxiliary paper feed idler and its stud on the rail
•The prealigner drive idler and its stud on the rail
•The prealigner drive roller and its stud on the rail
•The prealigner backup roller and its shaft and thrust washer
•The fixed-center idler gear in the 500 sheet base and its shaft
•The idler gear in the 500 sheet base and its shaft
Use IBM no. 23 grease (approved equivalent Shell Darina 1) to
lubricate: