2000/08/07 Caterpillar

A New Engine Shutdown Switch is Available {7418}

Usage:

AD40 1YZ

Load Haul Dump (LHD): R1300 (PIN: 6QW) R1600 (PIN: 9EW) R1700 (PIN: 4LZ) R1700G (PIN: 8XZ) R2900 (PIN: BAR; 5TW)
Underground Articulated Truck (UAT): AD40 (PIN: 1YZ) AE40 (PIN: 1ZZ)
Off-Highway Truck: 69D (PIN: 9SS; 9XS)

Elphinstone Service Magazine, 9EP8013, 31 May 2000, "New Engine Shutdown Switch Available". Disregard this article. See the replacement article that follows.

Description of Change: New engine shutdown switches are now available.

Adaptable To: The new 1DE2789 Shutdown Switch is a replacement for the former 9EP2125 Shutdown Switch and the new 1DE2780 Shutdown Switch is a replacement for the former 6DE6942 Shutdown Switch. The new 1DE2789 Shutdown Switch is adaptable to the following models: R1300 (PIN: 6QW1-UP), R1700-140 and Up and R2900-101 to 121. The new 1DE2780 Shutdown Switch is adaptable to the following models: R1600 (PIN: 9EW1-UP), R1700G (PIN: 8XZ1-UP), R2900-122 to 170, R2900 (PIN: 5TW1-UP), AD/AE40-129 & Up, 69D-101 to 123 and 69D (PIN: 9XS1-UP). Refer to the Table 1 below.

Note: Modify the following models: R1600 (PIN: 9EW1-UP), R1700G (PIN: 8XZ1-UP), R2900-101 to 170 and R2900 (PIN: 5TW1-UP). Refer to Illustration 1.

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Illustration 1	g00730226
Mounting modification for the new shutdown switch (1) Drill two new holes 4.8 mm (0.19 inch) in diameter. (2) Existing holes (A) 50 mm (1.97 inch)

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Table 1
Engine Shutdown Switches
Sales Model	Serial No.	Former Switch Group	New Switch Group
R1300	PIN: 6QW1-UP	9EP2125	1DE2789
R1600	PIN: 9EW1-UP	6DE6942	1DE2780
R1700	R1700-140 & Up	9EP2125	1DE2789
R1700G	PIN: 8XZ1-UP	6DE6942	1DE2780
R2900	R2900-101 to 121	9EP2125	1DE2789
R2900	R2900-122 to 170	6DE6942	1DE2780
R2900	PIN: 5TW1-UP	6DE6942	1DE2780
AD/AE40	AE/AD40-129 & Up	6DE6942	1DE2780
69D	PIN: 69D-101 to 123	6DE6942	1DE2870
69D	PIN: 9XS1-UP	6DE6942	1DE2780