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Crankshaft Main Bearings - Install: Disassembly and Assembly

This document provides detailed instructions for the disassembly and assembly of the crankshaft main bearings for the D6N XL, FTC, LGP Track-Type Tractor powered by a 3126B engine. It includes required tools, installation procedures, and specific torque settings for the bolts. Additionally, it emphasizes the importance of keeping parts clean and properly lubricated during assembly.

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anisimov92dsts
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39 views3 pages

Crankshaft Main Bearings - Install: Disassembly and Assembly

This document provides detailed instructions for the disassembly and assembly of the crankshaft main bearings for the D6N XL, FTC, LGP Track-Type Tractor powered by a 3126B engine. It includes required tools, installation procedures, and specific torque settings for the bolts. Additionally, it emphasizes the importance of keeping parts clean and properly lubricated during assembly.

Uploaded by

anisimov92dsts
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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D6N XL, FTC, LGP TRACK-TYPE TRACTOR ALH00001-UP (MACHINE) POW...

Page 1 of 3

Shutdown SIS

Previous Screen

Product: TRACK-TYPE TRACTOR


Model: D6N TRACK-TYPE TRACTOR ALH00896
Configuration: D6N XL, FTC, LGP TRACK-TYPE TRACTOR ALH00001-UP (MACHINE) POWERED BY 3126B Engine

Disassembly and Assembly


3126B Engines for Caterpillar Built Machines
Media Number -SENR9581-06 Publication Date -01/08/2018 Date Updated -17/08/2018

i01518323

Crankshaft Main Bearings - Install


SMCS - 1203-012

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 2P-5518 Main Bearing Tool 1
B 8T-5096 Dial Indicator Group 1

NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

Note: Place clean engine oil on the crankshaft main bearings prior to assembly. Ensure that the
tabs on the back side of the crankshaft main bearings fit in the grooves of the crankshaft main
bearing caps and the cylinder block.

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D6N XL, FTC, LGP TRACK-TYPE TRACTOR ALH00001-UP (MACHINE) POW... Page 2 of 3

Illustration 1 g00516920

1. Use Tool (A) and install the upper halves of the crankshaft main bearings in the cylinder
block. Do not put oil on the back of the crankshaft main bearing.

Illustration 2 g00610152

2. Install the lower halves of the crankshaft main bearings in crankshaft main bearing caps (2).
Do not put oil on the back of the crankshaft main bearing.

NOTICE

Crankshaft main bearing caps should be installed with the part


number toward the right side of the engine. Crankshaft main bearing
caps are to be identified by stamped numbers 1 through 7 located on
the bottom surface. The thrust plate is used on the number 6
crankshaft main bearing only.

3. Place crankshaft main bearing caps (2) in position on the cylinder block. Place clean engine
oil or Molylube on the bolt threads and on the washer face. Install bolts (1).

4. Tighten bolts (1) to a torque of 54 ± 7 N·m (40 ± 5 lb ft). Tighten each bolt (1) for an
additional 90 ± 5 degrees (1/4 turn).

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D6N XL, FTC, LGP TRACK-TYPE TRACTOR ALH00001-UP (MACHINE) POW... Page 3 of 3

Illustration 3 g00517003

5. Check the end play of the crankshaft with Tool (B). The end play must be 0.07 mm
(0.003 inch) to 0.32 mm (0.013 inch).

End By:

a. Install the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump -
Install".

Copyright 1993 - 2025 Caterpillar Inc. Thu May 22 16:27:22 UTC+0300 2025
All Rights Reserved.
Private Network For SIS Licensees.

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