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Buddy
Buddy, Technician
Category: Heavy Equipment
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Experience:  20 years experience. Freightliner tech for last 14 years
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What are the torque specs..head bolts..injector..thanx

Resolved Question:

what are the torque specs.for 3126e cat rod bearings main bearings head bolts valve adjustment injector settings head bolt sequence   thanx jim
Submitted: 5 years ago.
Category: Heavy Equipment
Expert:  Buddy replied 5 years ago.
HiCustomer Welcome to JA. I am Buddy, and i will try and help you out.Can i have your engine serial number so i can you the correct information.
Customer: replied 5 years ago.
cat 3126 e serial number ckm27436 1cpxho442hbk
Expert:  Buddy replied 5 years ago.
Thanks for the reply.I will reply shortly with some info for you.
Customer: replied 5 years ago.
also need injector settings same engine
Expert:  Buddy replied 5 years ago.

Hi again Jim. Sorry for the delay, i am at work. The injectors do not have a adjustment.

Here are the overhead specs

Table 1
Inlet Valves Exhaust Valves
Valve Lash Check (Stopped Engine) 0.38 ± 0.08 mm (0.015 ± 0.003 inch)
0.64 ± 0.08 mm (0.025 ± 0.003 inch)
TC Compression Stroke 1-2-4 1-3-5
TC Exhaust Stroke (1) 3-5-6 2-4-6
Firing Order 1-5-3-6-2-4 (2)

 

 

Here are the injector torque

Note: Do not use the shoulder bolt and the socket head bolt in order to seat the injector.

  • Install bolt (4) . Tighten bolt (4) to a torque of 6 N·m (50 lb in).
    1. Install bolt (3) . Tighten bolt (3) to a torque of 12 N·m (9 lb ft).

     

     

    Main cap bolts toruqe to 40 foot pounds then turn additional 90 degrees.

     

    Rod bolts torque to 52 foot pounds and then turn additional 120 degrees.

     

    Rod bolts that have nuts torque to 40 foot pounds and turn additional 60 degrees.

     

    Rocker shaft torques to 74 foot pounds

     

    14 Bigger head bolts torque to 221 back bolt off to washer is loose. Retorque to 95 and then recheck at 95.Then turn additional 90 degrees. The 5 smaller head bolts torque to 41 foot pounds. When i get off work , i can upload picture of torque sequence for u. Also if you have anymore questions or missed something, just ask. Thanks

    Expert:  Buddy replied 5 years ago.

    Here is the head torque sequence also.

     

    Tighten the cylinder head bolts according to the following procedure:

    1. Tighten bolt (1) through bolt (14) in a numerical sequence to a torque of 300 ± 15 N·m (221 ± 11 lb ft).
    1. Loosen bolt (1) through bolt (14) until the washers are loose under the bolt heads.
    1. Tighten bolt (1) through bolt (14) again in a numerical sequence to a torque of 130 ± 15 N·m (95 ± 11 lb ft).
    1. Again tighten bolt (1) through bolt (14) in a numerical sequence to a torque of 130 ± 15 N·m (95 ± 11 lb ft).
    1. Turn bolt (1) through bolt (14) in a numerical sequence for an additional 90° (1/4 turn).
    1. Tighten bolt (15) through bolt (20) in a numerical sequence to a torque of 55 ± 7 N·m (41 ± 5 lb ft

    graphic

    If you have anymore questions just ask.

    Buddy, Technician
    Category: Heavy Equipment
    Satisfied Customers: 730
    Experience: 20 years experience. Freightliner tech for last 14 years
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