COVER 4K4939 - Caterpillar

Illustration 1 g03317046
Illustration 2 g03317058
Bolt tightening sequence for 6V-6753 High Temperature Bolt (2)
Illustration 3 g03317059
Bolt tightening sequence for 6V-1943 High Temperature Bolt (3)
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).