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Parking Brake Mechanism|Description and Operation > < Telltale Switch - Parking Brake, Remove and Install or Replace

Omega B

 

 

Subject:

 

Modified Parking Brake Shoes Retention Pins

 

Vehicles:

 

Omega-A, Omega-B, Senator-B

 

Condition:

 

The retention pins (1) used to fasten the brake shoes onto the brake backing plate on Omega-B vehicles were modified from the cross-slotted version to a smooth version.

 

New:

 

These modified retention pins are now inserted in the brake backing plate from the axle side and twisted using KM-985 Special Service Tool (2) following assembly of the parking brake shoes.

As a result, the installation of the retention pins is modified as described in the following.

 

 

Object Number: 2399273 Size: DEFAULT

 

 

Operation:

 

1.    Remove rear wheel brake disc

 

2.    Remove brake shoes/ parking brake

 

3.    Remove fastening bolts for the brake backing plate ( I )

 

4.    Pull the brake backing plate correspondingly forwards and insert new retention pin from behind (II)

 

5.    Tighten brake backing plate 50 Nm + 30° up to 45°

 

6.    Mount brake shoes

 

7.    Insert compression spring and washer and twist retention pin using KM-985 (III)

 

Note:

Replacement of the retention pin on vehicles with the ”previous version” is performed using the same procedure described here.

 

 

Object Number: 2399274 Size: DEFAULT

 

 

 

Part:

Part No.

Catalogue No.

Retention pin

6 638 956

548 205

Spring

6 681 527

554 054

Washer

6 663 706

554 103

 

 

Time Allowance:

 

Operation No.

 

Operation

Time Allowance

 

 

 

 

H 3270 00

 

Parking Brake Shoes, Replace (Both Sides)

1.5

 

 

TC: 04, 06, 14

 

 

 

-:     Bleed braking system, (not required)

 

 

 

+:    Detach and reattach brake calliper (braking system remains sealed).

 

 

 

 

 

 

 

Ensuring lever and shackle are in working order, cleaning, adjusting hand brake, remove and reinstall catalytic converter shield.

 

 

 

 

 

 

 

In Addition:

 

 

006

eplace all retention pins for the hand brake shoes R

3

 

 

Important:

 

The specified time allowances do not include the time allowance for the vehicle set-up time of .2 hrs.

 

For reimbursement of the vehicle set-up time of .2 hrs, in warranty claims, enter the authorisation code ”T” and increase the main operation time allowance by .2 hrs.

 

The authorisation code may only be used once per work order. It may be used more than once if the workplace and workteam are changed at the same time.

 

Parking Brake Mechanism|Description and Operation > < Telltale Switch - Parking Brake, Remove and Install or Replace