Adjust parking brake - AR42.20-P-0540SX

MODEL 216 

MODEL 221.0/ 1 

Fig 1: Identifying Thumbwheel, Parking Brake Shoe And Brake Disk

Courtesy of MERCEDES-BENZ USA

	Adjust
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
1	Release parking brake
2	Hoist vehicle with lifting platform until wheels are free
3	Remove rear wheels
	Remove/install wheels		AP40.10-P-4050SX
4	Turn right-hand and left-hand adjusting wheel (1) with screwdriver until the parking brake shoes (2) abut the parking brake drums	Direction of rotation for applying the parking brake shoes (2): Turn right-hand adjusting wheel (1) opposite to the direction of travel. Turn the left-hand adjusting wheel (1) in the direction of travel.
	Checking
5	Check brake disks (3) for locking by turning manually	It must not be possible to turn the brake disks (3) by hand.
6	Release the left-hand and right-hand adjusting wheel (1)	Release the left-hand and right-hand adjusting wheel (1) by the same number of teeth.	*BE42.20-P-1002-01G
7	Check brake disks (3) for unobstructed movement	It must be possible to turn the brake disks (3) completely freely by hand.
8	Operate parking brake
9	Check brake disks (3) for locking by turning manually	It must not be possible to turn the brake disks (3) by hand.
10	Release parking brake
11	Check brake disks (3) for unobstructed movement	It must be possible to turn the brake disks (3) completely freely by hand.
12	Fit rear wheels
	Remove/install wheels		AP40.10-P-4050SX
13	Lower vehicle

CHECK VALUES FOR ELECTRIC PARKING BRAKE

Number	Designation		Model 216	Model 221 without code Z07	Model 221 with code Z07
BE42.20-P-1002-01G	Number of teeth by which adjusting wheel of adjusting mechanism must be loosened after the parking brake shoes make contact.	Number of teeth	10 (±1)	10 (±1)	10 (±1)