2007/12/31 Caterpillar

Improvements for the Torque Converter {3101}

Usage:

D6R 1RW

Track-Type Tractor: D6R (S/N: 2HM1-UP; 4FM1-UP; 8TM1-UP; 9BM1-UP; 2YN1-UP; 3ZN1-UP; 4HN1-UP; 4MN1-UP; 5LN1-UP; 7KN1-UP; 8LN1-UP; 8XN1-UP; 9MN1-UP; 9PN1-UP; DMP1-UP; 4JR1-UP; 6MR1-UP; 7GR1-UP; 9ZS1-UP; 1RW1-UP) D6RSeries II (S/N: BNC1-UP; CAD1-UP; ADE1-UP; BLE1-UP; DAE1-UP; ACJ1-UP; BMJ1-UP; BRJ1-UP; AEM1-UP; AFM1-UP; AGM1-UP; BPM1-UP; AEP1-UP; BLT1-UP; FDT1-UP; AAX1-UP; BMY1-UP) D7R (S/N: 9HM1-UP; 2EN1-UP; 3DN1-UP; 2HR1-UP) D7RSeries II (S/N: AEC1-1027; AFG1-UP; ABJ1-661; AGN1-990; ACS1-UP; ADW1-UP)

Description of Change: The torque converter has been improved on the machines that are listed above. The improved torque converter has two improvements. The first improvement is a new bearing that is more resistant to debris that will help to improve service life. The second improvement is a new carrier with a smaller seal that will reduce the load on the bearing and the reduced load on the bearing will provide increased service life for the bearing.

Adaptable To: Order the parts in Table 1 if your machine has a 1T-2055 Torque Converter Gp .

Order the parts in Table 2 if your machine has a 1T-2056 Torque Converter Gp.

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Illustration 1	g01429256

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Table 1
Required Parts For 1T-2055 Torque Converter Gp
Item	Old Part Number	Description	New Part Number	Description	Quantity
1	179-9579	Bearing	304-9651	Ball Bearing	1
2	1T-2048	Stator Carrier	1T-2095	Stator Carrier	1
3	142-8540	Seal Ring	1T-0069	Metal Seal Ring	1
4	1T-2077	Bearing Retainer	1T-2070	Bearing Retainer	1

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Table 2
Required Parts For 1T-2056 Torque Converter Gp
Item	Old Part Number	Description	New Part Number	Description	Quantity
1	179-9579	Bearing	304-9651	Ball Bearing	1
2	1T-2048	Stator Carrier	1T-2095	Stator Carrier	1
3	142-8540	Seal Ring	1T-0069	Metal Seal Ring	1
4	1T-2077	Bearing Retainer	1T-2070	Bearing Retainer	1

The improvements for the torque converter are adaptable to the following machines:

D6R (S/N: 2HM1-UP; 4FM1-UP; 8TM1-UP; 9BM1-UP; 2YN1-UP; 3ZN1-UP; 4HN1-UP; 4MN1-UP; 5LN1-UP; 7KN1-UP; 8LN1-UP; 8XN1-UP; 9MN1-UP; 9PN1-UP; DMP1-UP; 4JR1-UP; 6MR1-UP; 7GR1-UP; 9ZS1-UP; 1RW1-UP)
D6R Series II (S/N: BNC1-UP; CAD1-UP; ADE1-UP; BLE1-UP; DAE1-UP; ACJ1-UP; BMJ1-UP; BRJ1-UP; AEM1-UP; AFM1-UP; AGM1-UP; BPM1-UP; AEP1-UP; BLT1-UP; FDT1-UP; AAX1-UP; BMY1-UP)
D7R (S/N: 9HM1-UP; 2EN1-UP; 3DN1-UP; 2HR1-UP)