Goniometer
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- When tightening screws in engines, particularly in cylinder heads, flywheels, main bearings and piston rod heads, the system that only employs torque wrenches is used. Handbooks for recently designed cars provide for an angle control operation. Technically, in fact, simple tightening using a torque wrench proves to be insufficient for considerable effect of the friction coefficient on the wrench reading. The angle control system consists of the final locking of the screws, with a protractor verifying their actual rotation. Using the torque wrench is therefore limited to a single pretightening operation at a low torque value.
Instructions
Perform precharging at the value established using the torque wrench — insert the goniometer between the wrench and the operating tool
Position the magnet/shaft on the nearest fixing point of the engine
Rotate the disc until the index is squared with the line of the requested angle value
Apply the charge on the operating tool and reach the zero value
Select RAL-colour code
!! NOTE: On-screen visualisation of the colour differs from real colour shade!!