parts catalog

ENGINE AR-PRIMARY 3966952 - Caterpillar

3966952 ENGINE AR-PRIMARY Caterpillar parts C7.1
Alternative (cross code) number:
Caterpillar 3966952 ENGINE AR-PRIMARY

Buy ENGINE AR-PRIMARY 3966952 Caterpillar genuine, new aftermarket tractor parts with delivery

Compatible equipment models: 3966952:

INDUSTRIAL ENGINE  C7.1   Caterpillar
  For full view, you need register


Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Guide Stud
M12 x 1.25 by 100mm 2
B 8T-3052 Degree Wheel 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Check all components for wear and damage. If necessary, replace any components that are worn or damaged.
Illustration 1 g02659159
Typical example
Always wear protective gloves when handling parts that have been heated.
If the flywheel ring gear was removed, follow Step 1.a through Step 1.c in order to install a new ring gear (3) to flywheel (1).
Identify the orientation of teeth (4) on new ring gear (3). Note: The chamfered side of ring gear teeth (4) must face toward the starting motor when the flywheel is installed. The chamfered side of ring gear teeth ensures the correct engagement of the starting motor.
Heat flywheel ring gear (3) in an oven to a maximum temperature of 250 °C (482 °F) prior to installation. Note: Do not use a torch to heat the ring gear.
Ensure that the orientation of ring gear (3) is correct and quickly install the ring gear onto flywheel (1).
Inspect the crankshaft rear seal for leaks. If there are any oil leaks, replace the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear Seal - Remove and Install".
Illustration 2 g02659160
Typical example
Install a suitable lifting device to flywheel (1). The flywheel can weigh 75 kg (165 lb).
Install Tooling (A) in Position (X) on the crankshaft.
Use the suitable lifting device to position flywheel (1) onto Tooling (A).
Install new bolts (2) hand tight to flywheel (1).
Remove Tooling (A) and install remaining new bolts (2) hand tight to flywheel (1).
Remove the lifting device from flywheel (1).
Use a suitable tool to prevent the flywheel from rotating. Tighten bolts (2) to a torque of 30 N m (266 lb in). Use Tooling (B) to rotate bolts (2) through an additional 90 degrees in a clockwise direction in order to achieve the required final torque.
Check the run out of the flywheel. Refer to System Operation, Testing and Adjusting, "Flywheel" for further information. End By:
Install the electric starting motor. Refer to Disassembly and Assembly, "Electric Starting Motor - Remove and Install" for the correct procedure.

Parts engine Caterpillar catalog:

Back to top
The names Cat, Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Doosan, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.