3412E and C30 Engines Caterpillar

Turbocharger Model S41

Illustration 1	g00497640

(1) Apply 5P-3931 Anti-Seize Compound on the bearing surface and the bolt threads before assembly. Tighten the bolts to the following torque. ... 55 ± 5 N·m (41 ± 4 lb ft)

Illustration 2	g00497661

(2) V-band clamps

Tighten the V-band clamps to the following torque. ... 14 ± 1 N·m (10 ± 1 lb ft)

Gently hit around the V-band clamp with a soft faced hammer. Again tighten the V-band clamps to the following torque. ... 14 ± 1 N·m (10 ± 1 lb ft)

Turbocharger Model TW91

Illustration 3	g00497674

(1) Impeller

In order to install the impeller, the impeller must be at room temperature. Apply a thin coat of oil to the threads and the impeller face. Tighten the nut to the following torque in order to seat the impeller. ... 31 ± 1.5 N·m (23 ± 1.11 lb ft)

Loosen the nut. Again tighten the nut to the following torque. ... 5 ± 2 N·m (44 ± 18 lb in)

Additionally tighten the nut by the following value. ... 135 ± 5 degrees

Loosen the nut. Apply 4C-9507 Retaining Compound to the nut. Again tighten the nut to the following torque. ... 5 ± 2 N·m (44 ± 18 lb in)

Additionally tighten the nut by the following value. ... 135 ± 5 degrees

(2) V-band clamps

Tighten the V-band clamps to the following torque. ... 14 ± 1.5 N·m (10 ± 1.11 lb ft)

Gently hit around the V-band clamp with a soft faced hammer. Again tighten the V-band clamps to the following torque. ... 14 ± 1.5 N·m (10 ± 1.11 lb ft)

(3) Tighten the 8 bolts to the following torque. ... 39 ± 2 N·m (29 ± 1 lb ft)

Apply 5P-3931 Anti-Seize Compound on the washer face and the bolt threads of the exhaust manifold before assembly. Tighten the bolts and nuts that hold the turbocharger to the exhaust manifold to the following torque. ... 55 ± 5 N·m (41 ± 4 lb ft)