GEAR (12T.-IDLER) 9H5759 - Caterpillar

Track-Type Loader:
933C (S/N: 4MS1-UP; 5JS1-UP)
939C (S/N: 6DS1-UP)
Track-Type Tractor:
D3C Series III (S/N: 4KS1-UP; 4TS1-UP; 5GS1-UP)
D3G (S/N: CKA1-UP; CLB1-UP; CFC1-UP; CFF1-UP; JMH1-UP; BYR1-UP)
D4C Series III (S/N: 4LS1-UP; 6BS1-UP; 8CS1-UP)
D4G (S/N: FDC1-UP; HYD1-UP; CFN1-UP; TLX1-UP)
D5C Series III (S/N: 5HS1-UP; 6CS1-UP; 7PS1-UP)
D5G (S/N: WGB1-UP; CLF1-UP; RKG1-UP; FDH1-UP; CLW1-UP; FDW1-UP)
Description of Change: Final drives are leaking from the Duo-Cone Seal. Abrasive particles of dirt or sand can prematurely wear out the sealing surfaces of the Duo-Cone Seal. This will then lead to the failing of the final drive when the oil level is low.Adaptable To: When you disassemble the final drive on the machines that are listed, rebuild the final drive with a 6Y-0859 Duo-Cone Seal Gp (Heavy Duty). This Duo-Cone Seal will be more tolerant to abrasive applications.