Remove/install brake shoes of parking brake - AR42.20-P-0530SX

MODEL 216

MODEL 221

Fig 1: Identifying Parking Brake Shoe Components

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

1.9.10

"Perform brake test on test bench" reference changed

Test sequence augmented/revised

	Remove/install
	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
	Risk of injury to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
1	Use STAR DIAGNOSIS to bring the brake cables into the assembly position
2	Hoist vehicle with lifting platform until wheels are free
3	Remove rear wheels		AP40.10-P-4050SX
4	Remove rear brake disks (1)		AR42.10-P-0220SX
5	Unhook front retracting spring (2) using the removal and installation tool and remove		Fig 2
6	Remove retaining springs (3) with installation tool	To do this, press together retaining spring (3) and turn through 90° counterclockwise or clockwise.	Fig 3
7	Remove brake shoes (4) with adjusting mechanism (5) and rear retracting spring (6) over the rear axle shaft flange
8	Remove adjusting mechanism (5) and rear retracting spring (6) from the brake shoe (4)	Installation: Turn back adjusting mechanism (5). The adjusting wheel (5a) must point upwards.
9	Remove expansion lock (7)	Installation: The bolt (7a) must point downwards, otherwise the correct function of the parking brake is not provided
	Checking
10	Check brake shoes (4) and parking brake drum (1a)	Check for damage. If the brake shoes (4) are burnt or the parking brake drums are damaged (1a), the brake shoes (4), retracting springs (2, 6), retaining springs (3), brake disks (1) and adjusting mechanisms (5) should be replaced.
11	Check adjusting mechanism (5) and expansion lock (7)	Check for damage and ease of movement, replace if necessary.
12	Check cap (8) on brake stator	Check cap (8) is seated firmly, check for score marks and deformation, replace if necessary.
	Notes on installing the cap on the brake stator		AH42.20-P-0530-01T
13	Check brake cables	Check for damage, if necessary: ↓ Replace rear brake cables.	AR42.20-P-0525SX
14	Grease adjusting mechanism (5)	Installation: Grease thread of thrust piece (5b) and inner cylinder of adjusting mechanism (5) lightly with MB-long-life grease. Long-life grease	*BR00.45-Z-1001-06A
15	Grease expansion lock (7)	Installation: Grease pin (7a) and contact surfaces on the expansion lock (7) lightly with MB long-life grease. Long-life grease	*BR00.45-Z-1001-06A
16	Install in the reverse order
17	Adjust parking brake		AR42.20-P-0540SX
18	Condition brake shoes of electric parking brake		AR42.20-P-0530-02SX
	Checking
	Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand	Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY STOP switch to shut down test stand.	AS42.00-Z-0001-01A
19	Carry out brake test on the test stand		AP42.00-P-4290BA

Fig 2: Identifying Removal And Installation Tool (116 589 01 62 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Installation Tool (112 589 09 61 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1001-06A	Long-life grease	A 000 989 63 51 11