2012/12/11 Caterpillar

Engine:

3512C (S/N: TKP1-UP; T3R1-UP; T3W1-UP; T3Y1-UP)

3516C (S/N: TKT1-UP; TKX1-UP; TKY1-UP)

Description of Change: The new bellows assembly utilizes a new gasket to improve the seal of the wastegate adapter connections. The ends of the bellows have flanges in order to improve the joint.

Adaptable To: The new parts listed in Table 1 and 2 are adaptable back to first production of the serial numbers listed above. The new exhaust manifolds must be used with the new bellows assembly.

ReferenceRefer to Disassembly and Assembly, UENR0114, "Exhaust Manifold - Remove and Install "

Illustration 1	g03311038
Flange of the new 363-2095 Bellows As

Illustration 2	g03307217
378-8887 Exhaust Manifold Gp (1) 397-4972 Exhaust Manifold (2) 363-2095 Bellows As (3) 397-4973 Exhaust Manifold (4) 397-4969 Adapter

Illustration 3	g03310897
378-8888 Exhaust Manifold Gp (2) 363-2095 Bellows As (4) 397-4969 Adapter (5) 397-4970 Exhaust Manifold (6) 397-4971 Exhaust Manifold

Illustration 4	g03307516
Bellow and gasket assembly for both exhaust manifold groups (2) 363-2095 Bellows As (7) 392-9656 Exhaust Gasket (8) 241-2634 Clamp As

Lubricate the threads, bearing surfaces and inside diameter of the clamps with copper anti-seize before assembly. Tighten the clamps to 8 ± 1 N·m (71 ± 9 lb in).

Note: The bellows and the V band clamps are one time use only parts.