2003/02/10 Caterpillar

Engine:

3406C (S/N: 3ER1-UP)

3516 (S/N: 4XF1-UP)

Off-Highway Truck/Tractor:

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

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

776D (S/N: AFS1-UP)

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

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

784B (S/N: 5RK1-UP)

785 (S/N: 8GB1-UP)

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

789B (S/N: 7EK1-UP)

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

793 (S/N: 3SJ1-UP)

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

Reference: Service Magazine, SEPD0498, 22 November 1999, "New Cage and Adapter Assemblies Available for Power Take Off (PTO) Drives"

Reference: Service Magazine, SEPD0525, 22 May 2000, "Be Sure to use the Correct Power Take Off Shaft with the Cage Assembly"

In order to service the accessory drive assembly of a new engine or a remanufactured engine, install the correct shaft and the correct cage assembly.

The 163-2600 Cage As should not be used with the former 4P-3743 Shaft As. This combination will result in reduced oil flow to the bearings of the 141-7130 Adapter or the 137-8290 Adapter. Use only the 188-4783 Shaft As with the 163-2600 Cage As. The former 4P-3743 Shaft As must be used only with the former 7N-3009 Cage As.

The 188-4783 Shaft As has a through drilled oil hole and the 4P-3743 Shaft As does NOT have a through drilled oil hole.

Illustration 1	g00947246
188-4783 Shaft As

Illustration 2	g00947635
4P-3743 Shaft As