Release electric parking brake mechanically - AR42.20-P-1000W

MODEL 166, 172, 217, 222, 231 

Shown on model 172.4 

Fig 1: Brake Caliper And Spindle - Shown On Model 172.4

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove electric parking brake actuator motor	MODEL 231	AR42.20-P-0600RK
		MODEL 217, 222	AR42.20-P-0600LF
		MODEL 166, 172 The electric parking brake must be manually released if the electrical components of the electric parking brake malfunction when the parking brake is actuated.	AR42.20-P-0600W
	Loosen
2	Turn spindle (1) on brake caliper (2) until the brake disk is accessible	To release the parking brake, turn spindle (1) clockwise using a 7-mm Allen wrench. Spindle (1) must remain in an open state.
3	Install in the reverse order
4	Carry out brake test on the test stand
			AP42.00-P-4290BA