Remove/install parking brake pedal assembly - AR42.20-P-0510RT

MODEL 251 

Fig 1: Identifying Parking Brake Pedal Assembly Remove/Install Components (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Parking Brake Pedal Assembly Remove/Install Components (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Parking Brake Pedal Assembly Remove/Install Components (3 Of 3)

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

1.9.10

"Perform brake test on test bench" reference changed

Test sequence augmented/revised

	Removing
1	Secure vehicle to prevent it from rolling away  and then release the parking brake	It is essential to take suitable measured to prevent the vehicle from rolling away in order to avoid risk of accident
2	Remove cover below dashboard (3)	Left.	AR68.10-P-1500RT
3	Remove front door sill molding (5)	Left.	AR68.30-P-4100RT
4	Remove trim (4) in the front footwell	Left.	AR68.30-P-4010RT
5	Operate the unlocking (6) and hold, unscrewing the bolts (7) in the process
6	Detach internal component of unlocking (8) from the unlocking cable (1)	Do not buckle the unlocking cable in order to avoid damage. Carefully pull the internal component of unlocking out of the dashboard until the ball head (9) of the unlocking cable is accessible. Unhook the ball head of the unlocking cable from the internal component of the unlocking. Make sure that the parking brake has been released.
7	Disconnect electrical connectors (10) from the parking brake indicator switch (S12)
8	Detach circlip (12) from the parking brake cable (11)	Pry off circlip carefully. Make sure that the parking brake has been released.
9	Unlock notch (14) using a suitable tool and pull the latch rail (15) downwards out of the parking brake pedal assembly (2) together with the parking brake cable (11)	Do not buckle the parking brake cable in order to avoid damage. In order to unlock the notch (14), it must be pressed outwards slightly (towards the A-pillar) until it releases the latch rail (15). Make sure that the parking brake has been released.
10	Unscrew bolts (13) and remove the parking brake pedal assembly (2)	Do not buckle the unlocking cable (1) in order to avoid damage. Slip the unlocking cable out of the dashboard when removing the parking brake pedal assembly.
11	Unhook the unlocking cable (1) at the parking brake pedal assembly (2), unclip the plastic clip and remove the unlocking cable	Snap-release tool	Fig 4
	Install
12	Clip the plastic clip on the unlocking cable into the parking brake pedal assembly and hook in the unlocking cable at the parking brake pedal assembly
13	Position the parking brake pedal assembly (2) on the A-pillar and screw in the bolts (13)	Do not buckle the unlocking cable in order to avoid damage. When positioning the parking brake pedal assembly slip the unlocking cable into the dashboard.
		Bolt for pedal assembly of parking brake to A-pillar	*BA42.20-P-1001-01J
	Notes on self-locking nuts and bolts	All models	AH00.00-N-0001-01A
14	Slip the latch rail (15) together with the parking brake cable (11) into the parking brake pedal assembly (2) and engage the first  splines of the latch rail in the notch (14)	Do not buckle the parking brake cable in order to avoid damage.
15	Ensure that the parking brake cable (11) is correctly seated in the parking brake pedal assembly (2) and mount the circlip (12)	Ensure that the circlip engages correctly in the groove.
16	Put the electrical connectors (10) onto the parking brake indicator switch (S12)
17	Route the unlocking cable (1) and install the internal component of the unlocking (8) on the unlocking cable	Do not buckle the unlocking cable in order to avoid damage. Guide the unlocking cable through the installation opening of the unlocking in the dashboard, then slip into the internal component of the unlocking and hook the ball head of the unlocking cable into the internal component of the unlocking.
18	Push the internal component of the unlocking (8) back into the installation opening of the dashboard and attach with the two bolts (7)
19	Apply and release the parking brake several times in succession	By applying and releasing the parking brake several times the length of the parking brake cable is adjusted via the automatic cable slack adjuster. In the process the latch rail (15) moves into its correct position in the parking brake pedal assembly.
	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
20	Carry out brake test on the test stand		AP42.00-P-4290BA
21	Install trim (4) in the front footwell	Left.	AR68.30-P-4010RT
22	Install the front door sill molding (5)	Left.	AR68.30-P-4100RT
23	Install the cover (3) under the dashboard	Left. After installing the cover ensure that the hood is closed correctly.	AR68.10-P-1500RT

PARKING BRAKE

Number	Designation		Model 251
BA42.20-P-1001-01J	Bolt for pedal assembly of parking brake to A-pillar	Nm	20

Fig 4: Identifying Snap-Release Tool (129 589 11 63 00)

Courtesy of MERCEDES-BENZ USA