REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz E-Class

general info. full specifications. diagnostics. hints. tips. tricks

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Mercedes-Benz
	E-class
		Introduction
		Description of the model Mercedes E-Class
		Working conditions and tools
			Workplace
			Acquisition of spare parts
			Basic tool
			Special Tools
			Accident prevention
			Lifting the car jack
			Technique Mechanics
				Unscrewing rusted fasteners
				Unscrewing damaged nuts
				Unscrewing bolts with an internal hexagonal head and a "star"
				Unscrewing slotted and cross screws
				Removing fastener by drilling
				Unscrewing studs
				Boring head bolts with cut
				Tapping
			Delivery of the car repair
		Car Care
		Diesel engines
		Petrol engines
		Transmission
		Chassis
		The brake system
		Electrical
		Shop
		Body
		Applications
		Diagrams

printable version

Unscrewing rusted fasteners

Before you throw a wrench on rusted nut or bolt, remove visible dirt from the free parts of the bolt thread. Brush the loose threads of the metal brush and treat rust neutralizer. If you use a rust converter rapid action, you can immediately begin to turn away nuts. If you use an ordinary converter, you should wait a while before you begin to loosen rusted fasteners.

PRACTICAL ADVICE

Self-locking nuts

Self-locking nuts are sitting firmly on the thread and do not turn away, even due to vibration. For this they have inserts of artificial material or narrow thread. Basically self-locking nuts are used once, otherwise the effect of their actions is lost, so always replace self-locking nuts with new shot.

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Unscrewing damaged nuts