3500B and 3500C Marine Engines Caterpillar

Turbocharger

Usage:

3516B 9F2

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Illustration 1	g03317046

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Illustration 2	g03317058
Bolt tightening sequence for 6V-6753 High Temperature Bolt (2)

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Illustration 3	g03317059
Bolt tightening sequence for 6V-1943 High Temperature Bolt (3)

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Table 1
Specification for 379-5317 Turbocharger Gp
Item	Qty	Part	Specification Description
1	16	125-5375 Bolt	Before assembly, lubricate the threads with Loctite C5A Copper Anti-Seize. Torque to 40 ± 3 N·m (30 ± 2 lb ft).
2	8	6V-6753 High Temperature Bolt	Use the following procedure in order to tighten the bolts for the half flange: 1. Before assembly, lubricate the threads and the bearing surfaces with Loctite C5A Copper Anti-Seize. 2. Tighten bolts 1 in any sequence to 54 ± 5 N·m (40 ± 4 lb ft). 3. Tighten bolts 2 in any sequence to 54 ± 5 N·m (40 ± 4 lb ft).
3	12	6V-1943 High Temperature Bolt
4	16	369-3458 High Temperature Bolt	Before assembly, lubricate the threads with Loctite C5A Copper Anti-Seize. Torque to 40 ± 3 N·m (30 ± 2 lb ft).
5	8	300-8579 Bolt	Use the following procedure in order to tighten the turbo-exhaust manifold joint bolt: Before assembly, lubricate the threads and the bearing surfaces with Loctite C5A Copper Anti-Seize. 1. Align joints in order to get all four nuts started on the bolts. 2. Snug up all the bolts on the joint. 3. First tighten one bolt to 54 ± 5 N·m (40 ± 4 lb ft). 4. Tighten diagonally opposite bolt to 54 ± 5 N·m (40 ± 4 lb ft). 5. Tighten remaining two bolts to 54 ± 5 N·m (40 ± 4 lb ft). 6. Repeat procedure Step 3 to Step 5 in order to verify that all bolts are torqued to 54 ± 5 N·m (40 ± 4 lb ft).

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