SEAL-O-RING 3678471 - Caterpillar

Illustration 1 g02832437
(1) 340-5253 Exhaust Bypass
Table 1
Specification for 340-5253 Exhaust Bypass
Item Qty Part Specification description
2 4 168-7800 Locknut Clean the stud, the locknut, and the base of the locknut prior to assembly.
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.
Use the following procedure to tighten the locknut:
1. Tighten two diagonal locknuts to 25 6 N m (18 4 lb ft).
2. Tighten the remaining locknuts to 25 6 N m (18 4 lb ft).
3. Again torque all four locknuts to 47 9 N m (35 7 lb ft).
Illustration 2 g02832438
(1) 340-5253 Exhaust Bypass
Table 2
Item Qty Part Specification description
3 1 6V-8186 Full Nut Torque to 12.5 1.0 N m (110.6 8.9 lb in).
4 1 259-1435 Spring Free length is 127.0 mm (5.00 inch).
5 1 259-1434 Spring Free length is 127.0 mm (5.00 inch).
6 1 6V-8801 Nut Torque to 14 3 N m (124 27 lb in).
7 1 343-9109 Setscrew Before assembly, apply Loctite C5A Copper anti-seize to the threads and the bearing surfaces.
8 5 7C-9721 Screw Torque to 6.5 1.0 N m (57.5 8.9 lb in).