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KevinB
KevinB, Technician
Category: Heavy Equipment
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Experience:  Cat Field Tech for 6 years, John Deere Field Tech For 5 years
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Torque specs on rods & mains on a C-15 CAT

Resolved Question:

torque specs on rods & mains on a C-15 CAT
Submitted: 7 years ago.
Category: Heavy Equipment
Expert:  KevinB replied 7 years ago.

Rods are 65 lb ft plus 90 degrees

Use the following procedure in order to tighten the main bearing cap bolts:

  1. Apply clean engine oil to the threads of the bolts.
  1. Tighten the bolts first on the bearing tab side (1) of the cap.

    Torque for bolts ... 260 ± 14 N·m (190 ± 10 lb ft)

  1. Tighten the bolts on the opposite side (2) .

    Torque for bolts ... 260 ± 14 N·m (190 ± 10 lb ft)

  1. Put a mark on each bolt and each cap.
  1. Tighten the bolts on the opposite side (3) from the mark to angle (A) .

    Angle (A) ... 120 ± 5 degrees (2 flats)

  1. Tighten the bolts on the bearing tab side (4) of the cap from the mark to the following value.

    Angle (A) ... 120 ± 5 degrees (2 flats)

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