1990/09/01 Caterpillar

3600 Family Of Engines

Reference: Guideline For Reusable Parts And Salvage Operations, "Specifications For Reusable 3600 Series Turbocharger Components," Form SEBF8092.

Some early turbochargers many have low bolt torques on external bolts. The specifications and illustration identify the correct torques. Make the necessary corrections in the Specification Section of the Service Manuals.

(1) Radial clearance for turbine shaft bearings: 0.44 to 0.60 mm (.017 to .024").

(2) Torque for impeller retaining bolt: 48 ± 12 N·m (35 ± 9 lb ft).

(3) Tighten bolts to a torque of 58 ± 12 N·m (43 ± 9 lb ft).

(4) Tighten bolts to a torque of 28 ± 7 N·m (21 ± 5 lb ft).

(5) Minimum outside diameter of turbine shaft (impeller end): 33.480 mm (1.3181").

Maximum inside diameter of turbine shaft bearing (impeller end): 33.54 mm (1.320").

(6) Tighten bolts to a torque of 17 ± 3 N·m (13 ± 2 lb ft).

(7) Mimimum outside diameter of turbine shaft (turbine end): 42.980 mm (1.6921").

Maximum inside diameter of turbine shaft bearing (turbine end): 43.06 mm (1.695").

(8) End play for the turbine shaft: 0.10 to 0.20 mm (.004 to .008").

(9) Maximum width of seal ring groove: 2.85 mm (.112").

(10) Minimum diameter of the impeller hub: 46.00 mm (1.811").

(11) Tighten bolts to a torque of 17 ± 3 N·m (13 ± 2 lb ft).

(12) Tighten bolts to a torque of 58 ± 12 N·m (43 ± 9 lb ft).

(13) Maximum width of seal ring groove in turbine shaft: 2.58 mm (.102").

(14) Tighten bolt to a torque of 28 ± 7 N·m (21 ± 5 lb ft).

(15) Tighten bolt to a torque of 58 ± 12 N·m (43 ± 9 lb ft.

Turbocharger group.