2009/06/01 Caterpillar

Engine:

All 3600 Engines

All C280 Engines

Engine News SEBD9244, 22 January 1997, "Guidelines For Reusability Of Cylinder Head Studs, Main Bearing Cap Studs, Main Bearing Cap Cross Tie Bolts, And Connecting Rod Cap Bolts And Nuts". Disregard the original article. Part numbers and some additional information have been added.

ReferenceReuse And Salvage Guidelines, SEBF8108, "Specifications for Connecting Rods and Bearings Used in 3600 Family of Engines "

Use the following guidelines in order to determine the serviceability of the fasteners:

Thoroughly inspect the fasteners before you reuse any fastener. Do not reuse a fastener that has any kind of damage. Do not reuse a fastener that has any of these defects:

• Rust

• Nicks

• Thread damage

• Cracks

• Pits

• Deformation

If the fasteners appear to be free of defects, also follow these guidelines:

• Replace any stud for the cylinder head after the stud has been tensioned for 20 times. This includes the 1W-2363 Taperlock Stud, 7E-8400 Taperlock Stud, and 187-0450 Taperlock Stud .

• Also replace any stud for the main bearing cap (1W-0121 Taperlock Stud ) after the stud has been tensioned for 20 times.

• The cross tie bolt for the main bearing cap (3S-7079 Bolt ) can only be tensioned for five times.

• The connecting rod bolt (1W-0098 Bolt ) can only be tensioned for five times. Inspect the connecting rod bolt during each inspection of the bearing for the connecting rod. There must be no fretting of the shank of the bolt. This includes the knurled area of the bolt. Ensure that the bolt meets the guidelines for reusable parts. Do not reuse a connecting rod bolt if dimension (X) is greater than 329 mm (12.953 inch). Refer to Illustration 1.

• Do not reuse the nut for a connecting rod bolt. This includes the 6V-9801 12-Point Nut and 205-0640 Nut .

Illustration 1	g00775406
(X) Dimension