3512 and 3516 EUI Engines and 784B, 785B, 789B and 793B Off-Highway Truck/Tractors Caterpillar

Illustration 1	g01717053
Section view

(1) Nut

Torque ... 12.5 ± 1.2 N·m (110 ± 11 lb in)

(2) Bolt

Torque ... 6.8 ± 1.2 N·m (60 ± 11 lb in)

Illustration 2	g01717073

(3) Locknut

(4) Stud

Torque ... 35 ± 5 N·m (26 ± 4 lb ft)

Use the following procedure for the studs and for the locknuts:

1. Clean the stud, the locknut, and the base of the locknut prior to assembly.

2. Apply 2P-2333 High Temperature Sealer to the threads of the stud that extend through the flange of the exhaust bypass valve and to the bottom of the mating face of each locknut.

3. Tighten two diagonal locknuts.

   Torque ... 25 ± 6 N·m (18 ± 4 lb ft)

4. Tighten the remaining locknuts.

   Torque ... 25 ± 6 N·m (18 ± 4 lb ft)

5. Tighten all four locknuts again.

   Torque ... 47 ± 9 N·m (35 ± 7 lb ft)