Defects - Tips and Tricks

Defects - Tips and Tricks

Camshaft mounting screws M8x90 mm and M6x54 mm for PD engines

Camshaft mounting screws M8x90 mm and M6x54 mm for PD engines

While reparing the camshaft it is necessary to replace the old bearings lid screws for the new ones. Screws in our kits are made with prestress specially for these situations. If you will reinstall the old screws it may become under tighten and that will cause...

Camshaft set Components

Camshaft set Components

The camshaft kit is a comprehensive set of components that are recommended to be changed when performing the repair. The individual components of the valve opening system as well as the control of Unit Injector System (UIS) are: Camshaft, camshaft bearings, hydraulic...

Unit Injector System (UIS) – pot tappet and valve clearance

Unit Injector System (UIS) – pot tappet and valve clearance

The hydraulic pot tappet is a part of the timing mechanism. The tappet working surface is ground and hardened, in some cases the tappet walls are equipped with a black protective lacquer (similar to the pistons). The transfer of the stroke of the cam to the valve is...

Hydraulic tappets – causes and consequences of the damage

Hydraulic tappets – causes and consequences of the damage

If there is an excessive wear on the hydraulic tappets, it means that the hydraulic system components do not work as they should. All power transmission components must be working in perfect synchronicity and under optimal working conditions. If any of the components...

How to disassemble and assemble the camshafts

How to disassemble and assemble the camshafts

When disassembling and assembling the camshaft, it is always necessary to strictly follow the manufacturer's instructions for the particular engine type (e.g. according to the procedure in a workshop manual). The following is particularly important (based on the...

How to prevent faults of the camshafts

How to prevent faults of the camshafts

The most common defects are broken and seized camshafts. The shaft breakage is caused by incorrect assembly into a misalignment position, which limits the free rotation of the cam. Seizing of camshafts is caused by impurities in the shaft bearing housing, respectively...

What kind of camshaft – made of steel or cast iron?

What kind of camshaft – made of steel or cast iron?

Camshafts are made of steel and cast iron. The starting material of the steel cams is the rod material, then precisely machined and inductively hardened on the surface, respectively case-hardened. Cast iron shafts are produced by casting an iron alloy. The steel...

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