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How To Replace Thrust Bearing?

If you are too tight or loose, you can replace the thickness of the thrust bearing to meet the desired specifications. 

Before installing the main crankshaft cap, you must thoroughly lubricate the exposed main bearing and thrust bearing surface. Once you have positioned the main bearings and cap, tighten to a minimum of about 10 – 15 lbs lb according to the factory recommended tightening sequence. Instead of simply installing your main bearings and thrust bearings, spend a few extra minutes setting all main caps and fasteners to factory-specified torque values to maximize thrust bearing service life. 


The drawer surface is generally flat because it is opposite the flat thrust area of the crank. A slight cone is attached to the system parts to create an oil wedge supporting the crankshaft pin. 

The hydrodynamic thrust bearing supports the rotor with oil, just like the hydrodynamic gun bearing, but now has a tapered edge that conveys the oil wedge. In addition to oil delivery through the crank gap, thrust bearings also have grooves that allow the oil from the radial bearing to penetrate into the thrust bearing – the bearing surface provides a lubricating film. 

This creates the oil wedge and oil is injected between the bearing and the shield. The bearing itself has two grooves, one for oil extraction through the crank gap and another for oil injection into the shaft. This depends on the bear design and equipment manufacturer, but there are several ways to create oil wedges, such as the hydrodynamic thrust bearing. 

The thrust bearing supports a radial bearing that can carry a load measured in the projected bearing area. The oil can handle loads of about 500 psi before collapsing, but the manufacturer chooses a warehouse that can load up to 1,000 psi of oil per square centimeter of the warehouse. When the thrust of a thin film oil runs through the connecting rod mesh, it cannot carry nearly as much load. 

The thrust bearing supports a radial bearing that can carry a load measured in the projected bearing area. When the thrust of a thin oil film passes through the rod mesh, it cannot carry nearly as much load. The radial pincer bearing develops a possibility that the curved surface of the pincer bearing joins to form a wedge.

This principle of lubrication for troubleshooting is applicable to unbalanced thrust bearings as well as to pivoting shoe and pincer bearings. Of particular interest is the possibility that a rotating journal or babbitt shoe surface interacts with lubricating oil. The radial pincer bearing develops the possibility that the curved surface of its pincer assembly collides in such a way that it collides with the curve of a pincer bearing to form a wedge. 

When assessing a camp in need, the bitten shoe surface is often the only area that needs to be examined and it is the most obvious area of concern. 

OPG Hydro-Tech noted that an improvement of the thrust bearings could be carried out with polytetrafluoroethylene (PTFE) thrust bearings to replace the babbitted pad. The thrust bearings have been in operation since 2002 when the bearings of Unit 4 failed. An investigation revealed a breakdown in the shut-off system after the refurbishment of the roller bearing, which could possibly allow the device to rotate without oil impulse. 

The cause of the slide bearing failure can be attributed either to a single problem or a combination of problems. Of course, choosing the wrong type of push bearers can lead directly to the failure of the type of push bearings, but damage can also occur due to the lack of proper lubrication of the bearings. 

However, in general, one or more of the associated problems are usually to blame, including bearing overload, misalignment of the surface, or bearing overload. When the thrust bearing fails, parts are usually so badly damaged during pushing that there is little evidence of a cause. The bearing has worn out the steel girders, which have also worn out the crankshaft push surface. 

There is no evidence of damage elsewhere in the engine that would indicate a lubrication problem or contamination of foreign particles, such as a defective valve or piston failure. 

If the thrust bearing is in its "final position," an adjacent oil seal should be installed. If the bearing lacks the right lubrication, the clutch can be released, which leads to difficulties in shifting. Improper clutch use can shorten the life of the engine, as well as the time between the release of the clutch and the next gear change.

A worn bearing cannot distribute the pressure evenly to the coupling plate, which results in uneven contact with the pressure plate. The clutch pedal can also vibrate too much, which can lead to vibrations in the gearbox and other parts. 

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