2003/10/13 Caterpillar

Articulated Truck:

D250E (S/N: 5TN1-UP)

D250E Series II (S/N: 4PS1-UP)

D300E (S/N: 7FN1-UP)

D300E Series II (S/N: 5KS1-UP)

D350E (S/N: 9LR1-UP)

D350E Series II (S/N: 2XW1-UP)

D400E (S/N: 2YR1-UP)

D400E Series II (S/N: 8PS1-UP)

D400E EJECTOR Series II (S/N: APF1-UP)

Off-Highway Truck/Tractor:

69D (S/N: 9XS1-UP)

73D (S/N: 9YS1-UP)

768C (S/N: 02X1-UP)

769C (S/N: 01X1-UP)

769D (S/N: 5SS1-UP; 5TR1-UP)

772B (S/N: 64W1-UP)

773B (S/N: 63W1-UP)

773D (S/N: 7CS1-UP; 7ER1-UP)

776 (S/N: 14H1-UP)

776B (S/N: 6JC1-UP)

776C (S/N: 2TK1-UP)

776D (S/N: 5ER1-UP; AFS1-UP)

777 (S/N: 84A1-UP)

777B (S/N: 4YC1-UP)

777C (S/N: 4XJ1-UP)

777D (S/N: 2YW1-UP; 3PR1-UP; AGC1-UP; AGY1-UP)

784C (S/N: 2PZ1-UP)

785 (S/N: 8GB1-UP)

785B (S/N: 6HK1-UP)

785C (S/N: 1HW1-UP; 5AZ1-UP; APX1-UP)

789 (S/N: 9ZC1-UP)

789C (S/N: 2BW1-UP)

793 (S/N: 3SJ1-UP)

793B (S/N: 1HL1-UP)

793C (S/N: 4AR1-UP; 4GZ1-UP; ATY1-UP)

Quarry Truck:

771C (S/N: 3BJ1-UP)

771D (S/N: 6YS1-UP; 6JR1-UP)

775B (S/N: 7XJ1-UP)

775D (S/N: 8AS1-UP; 6KR1-UP)

Wheel Tractor-Scraper:

621E (S/N: 6AB1-UP)

621F (S/N: 4SK1-UP)

623E (S/N: 6YF1-UP)

623F (S/N: 5EW1-UP)

627E (S/N: 6EB1-UP; 6GB1-UP; 7CG1-UP)

627F (S/N: 1DL1-UP)

631C (S/N: 67M1-UP)

631E (S/N: 1AB1-UP)

633E Series II (S/N: 2PS1-UP)

637E (S/N: 1FB1-UP)

651E (S/N: 4YR1-UP)

657E (S/N: 5YR1-UP; 6PR1-UP; 6TR1-UP; 7KR1-UP; 87Z1-UP; 90Z1-UP; 91Z1-UP)

Underground Articulated Truck:

AD40 Series II (S/N: 1YZ1-UP)

AE40 II (S/N: 1ZZ1-UP)

Service Magazine SEPD0568, 5 March 2001, "New Transmission Gear Position Sensor Available for Off Highway Trucks, Wheel Tractor Scrapers, and Articulated Trucks". Disregard the existing article. Refer to the following information.

Reference: Service Magazine, SEPD0278, 30 October 1995, "New ICM Transmission Control (Actual Gear Switch) Is Available"

Reference: Service Magazine, SEPD0352, 31 March 1997, "New Transmission Harnesses With Revised Grounding Now Used To Increase Service Life"

Reference: Service Magazine, SEPD0476, 14 June 1999, "Chassis And Cab Harnesses Must Be Replaced As A Set"

Description of Change: A new 198-8761 Position Sensor (Transmission Gear) is available for field service of the Off-Highway Trucks, Wheel Tractor-Scrapers, and Articulated Trucks with the serial number prefixes that are listed above. This new position sensor replaces the 174-5290 Position Sensor (Transmission Gear). The 198-8761 Position Sensor (Transmission Gear) offers greatly improved service life.

A new 198-8762 Position Sensor (Transmission Gear) is available for field service of certain Articulated Trucks which have the serial number prefixes that are listed above. This new position sensor replaces the 185-4261 Position Sensor (Transmission Gear). The 198-8762 Position Sensor (Transmission Gear) offers greatly improved service life.

Adaptable To: The 198-8761 Position Sensor (Transmission Gear) is effective with the serial numbers that are listed in Table 1. The 198-8761 Position Sensor (Transmission Gear) is adaptable to serial numbers that are listed in Table 2.

The 198-8762 Position Sensor (Transmission Gear) is effective with the serial numbers that are listed in Table 3. The 198-8762 Position Sensor (Transmission Gear) is adaptable to serial numbers that are listed in Table 4.

Table 1

The 198-8761 Position Sensor (Transmission Gear) Is Effective with the Following Serial Numbers:
Model Number	Serial Number
769D	S/N:5SS398-UP
771D	S/N:6YS250-UP
773D	S/N:7CS481-UP
775D	S/N:8AS321-UP
776D	S/N:AFS76-UP
785C	S/N:APX179-UP
789C	S/N:2BW309-UP
777D	S/N:AGC405-UP
793C	S/N:ATY224-UP
793C	S/N:4GZ212-UP
621F	S/N:4SK1073-UP
KRESS	05A12928
ROYAL	05A12853
623F	S/N:5EW338-UP
627F	S/N:1DL892-UP
631E	S/N:1AB1906-UP
637E	S/N:1FB832-UP
657E	S/N:6TR230-UP
657E	S/N:5YR310-UP
69D	S/N:9XS81-UP
AE40	S/N:1ZZ537-UP
AD40	S/N:1YZ241-UP
D400E Series II	S/N:8PS871-UP
D400E EJECTOR Series II	S/N:APF300-UP

Table 2

The 198-8761 Position Sensor (Transmission Gear) is Adaptable to the Following Serial Numbers:
Model Number	Serial Number
621E	S/N:6AB1-UP
621F	S/N:4SK1-1035
623E	S/N:6YF1-UP
623F	S/N:5EW1-301
627E	S/N:6EB1-UP
627E	S/N:6GB1-UP
627E	S/N:7CG1-UP
627F	S/N:1DL1-863
631C	S/N:67M1-UP
631E	S/N:1AB1-1904
633E	S/N:2PS1-UP
637E	S/N:1FB1-826
651E	S/N:4YR1-UP
657E	S/N:7KR1-UP
657E	S/N:87Z1-UP
657E	S/N:91Z1-UP
657E	S/N:90Z1-UP
657E	S/N:5YR1-304
657E	S/N:6PR1-UP
657E	S/N:6TR1-227
69D	S/N:9XS1-74
73D	S/N:9YS1-UP
768C	S/N:02X1-UP
769C	S/N:01X1-UP
769D	S/N:5SS1-333
769D	S/N:5TR1-UP
771C	S/N:3BJ1-UP
771D	S/N:6JR1-UP
771D	S/N:6YS1-225
772B	S/N:64W1-UP
773B	S/N:63W1-UP
773D	S/N:7ER1-UP
773D	S/N:7CS1-397
775B	S/N:7XJ1-UP
775D	S/N:6KR1-UP
775D	S/N:8AS1-286
776	S/N:14H1-UP
776B	S/N:6JC1-UP
776C	S/N:2TK1-UP
776D	S/N:5ER1-UP
776D	S/N:AFS1-75
777	S/N:84A1-UP
777B	S/N:4YC1-UP
777C	S/N:4XJ1-UP
777D	S/N:3PR1-UP
777D	S/N:2YW1-UP
777D	S/N:AGC1-269
77D HAA	S/N:AGY1-UP
784C	S/N:2PZ1-UP
785	S/N:8GB1-UP
785C	S/N:1HW1-UP
785B	S/N:6HK1-UP
785C	S/N:5AZ1-UP
785C	S/N:APX1-UP
789	S/N:9ZC1-UP
789B	S/N:7EK1-UP
789C	S/N:2BW1-UP
793	S/N:3SJ1-UP
793B	S/N:1HL1-UP
793C	S/N:4AR1-UP
793C	S/N:4GZ1-210
793C	S/N:ATY1-182
AE40	S/N:1ZZ1-533
AD40	S/N:1YZ1-234
D400E Series II	S/N:8PS1-870
D400E EJECTOR Series II	S/N:APF1-299

Table 3

The 198-8762 Position Sensor (Transmission Gear) is Effective with the Following Serial Numbers:
Model Number	Serial Number
D250E	S/N:5TN282-UP
D250E Series II	S/N:4PS770-UP
D300E	S/N:7FN230-UP
D300E Series II	S/N:5KS602-UP
D350E Series II	S/N:2XW441-UP
D4000E	S/N:2YR118-UP

Table 4

The 198-8762 Position Sensor (Transmission Gear) is Adaptable to the Following Serial Numbers:
Model Number	Serial Number
D250E	S/N:5TN1-281
D250E Series II	S/N:4PS1-769
D300E	S/N:7FN1-229
D300E Series II	S/N:5KS1-601
D350E	S/N:9LR1-UP
D350E Series II	S/N:2XW1-440
D400E	S/N:2YR1-117