3524B Engine for Caterpillar Built Machines Bearing Clearance - Check Caterpillar

Bearing Clearance - Check
1.1. Measurement Procedure

Measurement Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
198-9142  Plastic Gauge 
198-9143 Plastic Gauge 
198-9144 Plastic Gauge 
198-9145 Plastic Gauge 


Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

Note: AVSpare does not recommend the checking of the actual bearing clearances particularly on small engines. This is because of the possibility of obtaining inaccurate results and the possibility of damaging the bearing or the journal surfaces. Each AVSpare engine bearing is quality checked for specific wall thickness.

Note: The measurements should be within specifications and the correct bearings should be used. If the crankshaft journals and the bores for the block and the rods were measured during disassembly, no further checks are necessary. However, if the technician still wants to measure the bearing clearances, Tooling (A) is an acceptable method. Tooling (A) is less accurate on journals with small diameters if clearances are less than 0.10 mm (0.004 inch).


Lead wire, shim stock or a dial bore gauge can damage the bearing surfaces.

The technician must be very careful to use Tooling (A) correctly. The following points must be remembered:

  • Ensure that the backs of the bearings and the bores are clean and dry.

  • Ensure that the bearing locking tabs are properly seated in the tab grooves.

  • The crankshaft must be free of oil at the contact points of Tooling (A).

  1. Put a piece of Tooling (A) on the crown of the bearing that is in the cap.

    Note: Do not allow Tooling (A) to extend over the edge of the bearing.

  2. Use the correct torque-turn specifications in order to install the bearing cap. Do not use an impact wrench. Be careful not to dislodge the bearing when the cap is installed.

    Note: Do not turn the crankshaft when Tooling (A) is installed.

  3. Carefully remove the cap, but do not remove Tooling (A). Measure the width of Tooling (A) while Tooling (A) is in the bearing cap or on the crankshaft journal. Refer to Illustration 1.

    Illustration 1g00473227
    Typical Example

  4. Remove all of Tooling (A) before you install the bearing cap.

    Note: When Tooling (A) is used, the readings can sometimes be unclear. For example, all parts of Tooling (A) are not the same width. Measure the major width in order to ensure that the parts are within the specification range. Refer to Specifications, "Crankshaft" for the correct clearances.

Information System:

3500 and 3500B High Displacement Engines for Caterpillar Built Machines Transmission Oil Cooler - Remove and Install
550, 570 and 580 Wheel Harvesters Maintenance Interval Schedule
RM-350B Road Reclaimer/Soil Stabilizer Machine Systems Hydraulic Cylinder (Front Steering) - Remove and Install
D350E Series II and D400E Series II Articulated Trucks Power Train Selector and Pressure Control Valve
550, 570 and 580 Wheel Harvesters Specifications
550, 570 and 580 Wheel Harvesters Safety Messages
950G Series II Wheel Loader, 962G Series II Wheel Loader and IT62G Series II Integrated Toolcarrier Hydraulic System Work Tool Positioner - Adjust - Integrated Toolcarrier
140H and 160H Motor Graders Engine Supplement Fuel Filter (Secondary) and Fuel Filter Base - Remove and Install
950G Series II Wheel Loader, 962G Series II Wheel Loader and IT62G Series II Integrated Toolcarrier Hydraulic System Lift Kickout - Adjust - Integrated Toolcarrier
12H Motor Grader Engine Supplement Refrigerant Condenser - Remove and Install
D350E Series II and D400E Series II Articulated Trucks Power Train Rear Drive Shaft
120H and 135H Motor Graders Machine Systems Bank Valve - Disassemble - Bank Valve with Hydraulic Detent
320B, 320B L and 320B N Excavators Reference Material
R2900 Load Haul Dump Bucket Loading Hauling Units
CB-534D and CB-564D Asphalt Compactors Belts - Inspect/Adjust/Replace
R2900 Load Haul Dump Stopping the Machine
938G II Wheel Loader and IT38G II Integrated Toolcarrier Additional Messages
140H and 160H Motor Graders Engine Supplement Water Separator and Fuel Filter (Primary) - Remove and Install
Troubleshooting Compressed Air System Components and Performance{1803, 5500}
143H and 163H Motor Graders 3176C Engine Supplement Battery - Remove and Install
R2900 Load Haul Dump Before Operation (Remote Control)
R2900 Load Haul Dump Operation (Remote Control)
R1600 Load Haul Dump Hydraulic System Relief Valve (Lift Circuit) - Test and Adjust
R1600G Load Haul Dump Hydraulic System Sequence Valve (Float) - Test and Adjust