3412 Generator Set Engines Caterpillar


Automatic Timing Advance Unit

Usage:

3412C 4BZ



Illustration 1g01020841

(1) Two weights

(2) 7E-8814 Spring

Length under test force ... 67.59 mm (2.661 inch)
Test force ... 15.6 N (3.5 lb)
Free length after test ... 74.082 mm (2.9166 inch)
Outside diameter ... 25.4 mm (1.00 inch)

(3) Tighten the four bolts to the following torque. ... 230 ± 15 N·m (170 ± 11 lb ft)

(4) Tighten the center bolt to the following torque. ... 13 ± 3 N·m (115 ± 27 lb in)

Lubricate the slides and the weights with engine oil prior to installing the drive group onto the engine.

Caterpillar Information System:

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