2001/07/01 Caterpillar

Engine:

C-10 (S/N: 3CS1-UP; 8YS1-UP; BEW1-UP)

C-12 (S/N: BFH1-UP; 1YN1-UP; 2KS1-UP; 9NS1-UP)

Truck Engine News SEBD6738, 1 September 2001, "New Spacers and Gaskets Are Being Used On The Turbocharger Oil Supply Line and The Turbocharger Oil Drain Line ". Disregard this article. This article has been replaced by the following article.

Description of Change: New spacers, new longer bolts, and new gaskets are being used on the oil supply line and the oil drain line for the turbocharger. The new components provide a greater clamping force and an improved seal. The improved gasket material provides a better seal between the turbocharger and the oil lines.

Adaptable To: The following illustrations and tables identify the new components for the turbocharger oil lines. The new components are used on the above engines. Tighten the bolts to standard torque.

Illustration 1	g00807249
115-9377 Turbocharger Oil Lines

Note: The 115-9377 Turbocharger Oil Lines can be easily identified by a flat flange for the oil supply.

Table 1

Required Components for the 115-9377 Turbocharger Oil Lines
Item	Part Number	Description	Qty
1	9M-1974	Washer	4
2	6H-7127	Spacer	4
3	8H-9788	Oil Supply Gasket	1
4	6V-5218	Bolt	4
5	188-6126	Oil Drain Gasket	1

Illustration 2	g00807368
136-4324 Turbocharger Oil Lines

Note: The 136-4324 Turbocharger Oil Lines can be easily identified by the step in the flange for the oil supply.

Table 2

Required Components for the 136-4324 Turbocharger Oil Lines
Item	Part Number	Description	Qty
1	9M-1974	Washer	4
2	9G-8661	Spacer	1
3	8H-9788	Oil Supply Gasket	1
4	8T-0276	Bolt	2
5	188-6126	Oil Drain Gasket	1
6	4K-5824	Spacer	1

Illustration 3	g00807369
143-0819, 143-0820, 153-7057, 153-9049, 163-6094, 165-0592 and 187-3325 Turbocharger Oil Lines

Note: The Turbocharger Oil Lines that are listed in table 3 can be easily identified by the step in the flange for the oil supply.

Table 3

Required Components for 143-0819, 143-0820, 153-7057, 153-9049, 163-6094, 165-0592, and 187-3325 Turbocharger Oil Lines
Item	Part Number	Description	Qty
1	9M-1974	Washer	4
2	9G-8661	Spacer	3
3	8H-9788	Oil Supply Gasket	1
4	8T-0276	Bolt	4
5	188-6126	Oil Drain Gasket	1
6	4K-5824	Spacer	1