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Cat Man
Cat Man, Caterpillar Engine Expert
Category: Heavy Equipment
Satisfied Customers: 8336
Experience:  23 Years Caterpillar Engine experience.
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I need cat c12 engin torque specs on,rod-maine-heade-valves-

Customer Question

I need cat c12 engin torque specs on,rod-maine-heade-valves- injector-exhaust and firing order.
Submitted: 4 years ago.
Category: Heavy Equipment
Expert:  Cat Man replied 4 years ago.
Hi. Thanks for using JA! I will try and help you out.

Could you get me the engine serial number please?
Customer: replied 4 years ago.
c12 cat ser#9ns15773
Expert:  Cat Man replied 4 years ago.
Thanks for the I nformation.

The rods torque to 95 foot pounds plus a 60 degree turn.

The mains torque to 70 foot pounds plus 90 degree turn.

The head torques to 120 foot pounds plus a 90 degree turn. The small head bolts torque to 20 foot pounds.

The injector torques to 22 foot pounds.

The rocker arms torque to 75 foot pounds.

The jake nuts torque to 60 foot pounds.

The jake bolts torque to 41 foot pounds.

The firing order is 153624.

Please let me know if you need more help or have more questions.

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