2002/05/01 Caterpillar

Engines: Commercial

3500 Diesel

Engines:

G3500 Series

Engine News SEBD9303, November 2001, "The Torque Has been Increased For The Bolts That Fasten The Stub Shafts To The Engine Cylinder Block". Disregard this article. This article has been replaced by the article that follows.

The bolts that are used to fasten the stub shaft to the cylinder block in the rear gear groups and the balancer groups have changed. The tightening torque for those bolts has also changed.

Four 8M-2530 Bolts (1) are used to fasten the stub shafts (2) to the cylinder block. These bolts are twelve point shoulder bolts. Tighten the four bolts (1) that fasten the stub shaft (2) to the cylinder block to a torque of 140 ± 10 N·m (105 ± 5 lb ft). Illustration 1 shows a typical rear gear group. Illustration 2 shows a typical balancer group.

Illustration 1	g00834994
This illustration shows a typical rear gear group. (1) Four 8M-2530 Bolts (2) Stub Shaft

Illustration 2	g00890876
This illustration shows a typical balance group. (1) Four 8M-2530 Bolts (2) Stub Shaft (3) Balancer Gear

Note: Caterpillar is in the process of updating all related service literature. In the mean time, please make a note about this information in the applicable service manual modules.