CASE AS 9G9983 - Caterpillar

INTERMEDIATE DUTY: Defined as two seconds slip per engagement maximum, but not more than one such engagement per hour.
HEAVY DUTY: Defined as four seconds slip per engagement maximum, but not more than one such engagement per hour.
Refer to "Technical Information File" TD6009 and TD6005 for horsepower and slide load capabilities of the new clutches.The following earlier IBF series clutches can be converted from oil lubricated main bearing to grease lubricated main bearings using information given in Special Instruction, Form No. SMHS8189.
Earlier clutches can be converted from "metallic" to "non-metallic" clutch plates to correct drive ring and clutch plate tooth wear problems. A cross reference of the improved clutch plates is as follows:
When the non-metallic clutch plates are installed, always inspect the drive ring teeth and replace if worn.
Service Magazine dated February 22, 1982, gives information on the new 5P3499 Pilot Bearing to replace 5P381 Pilot Bearing in clutches for use on 3406, 3408 and 3412 Engines.