REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz G-Class (W463, 1999 issue)

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

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Mercedes-Benz
	G-class
		Introduction
		Controls and operation receptions
		Current care and maintenance
		Engine
		System of cooling, heating, ventilation and air conditioning
		The power supply system and exhaust
		Systems of an electric motor
		Automatic Transmission
		Transmission Line
		Brakes and auxiliary systems
			Specifications
			Check the brake system for leaks
			Check of serviceability of functioning of the vacuum brake booster
			Removal and installation of the brake fluid reservoir and the master cylinder (GTZ)
			Removing and installing brake servo stroke sensor diaphragm BAS
			Removal and installation of the vacuum pump (diesel engines)
			Removing and installing control modules ABS / EBV / ESP
			Removing and installing hydromodulator ABS / 4-ETS
			Removal and installation of wheel gauges ABS
			Removal and installation of the rotor wheel ABS sensors
			Removing and installing brake pedal
			Removal and installation of the cocking lever parking brake with bearing bracket
			Replacement brake hoses
			Check and replacement of brake pads
			Replacing the parking brake shoes
			Removing and installing brake caliper
			Repair of fixed-type caliper
			Check, removal and installation of brake disks
			Removal and installation of components of the cable handbrake
			Adjusting the parking brake
			Bleeding brake system
		Suspension and steering
		Body
		Onboard electric
		Wiring

Check the brake system for leaks

Verification is performed using a special tester (051), connected to the valve pumping the brake caliper.

Check brake circuit for leaks


051 - tester	080 - Gates for squeezing the pedal

High-pressure test

PERFORMANCE ORDER

Run the engine at moderate speed, then a sharp releasing the gas pedal to create a deep vacuum in the intake manifold.
Using a special gate (080) to fully depress the brake pedal. The pressure drop over the next 5 minutes should amount to no more than 5% - believe on the tester (051).

Low-head test

PERFORMANCE ORDER

Stop the engine and a few taps on the brake pedal fully relieve depression.
With gate (080) Depress the pedal so that the tester (051) recorded a pressure of 3 bar - the pressure must be kept for at least 2 minutes.
In summary pump over brake system (see. Section Bleeding brake system).

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