Front Disc Brakes - Clunk During Braking
86ford21 Article No. 86-6-21BRAKES - FRONT DISC - CLUNK
LIGHT TRUCK 1980-85 E250/350, F250/350
Some 1980-85 250/350 Econoline and F Series vehicles over 6900 GVW are experiencing front disc brake clunk during braking. This concern can be corrected by using new caliper support keys and springs as outlined in the following procedure.
1. Remove the caliper and clean the sliding surfaces with a wire brush. Apply a light coat of ESAM1C172-A (D7AZ-19590-A) lubricant to both surfaces, being careful not to get lubricant on rotors or linings.
2. Check the front wheel bearing end play adjustment. Adjust the front wheel bearings using the Light Truck Shop Manual procedures, Section 11- 10 and 11-12.
3. Discard the old caliper support key and spring and reinstall the caliper using a new service key (D7TZ- 2B487-B) and spring (D7TZ-2B486-B).
PART NUMBER PART NAME CLASS
D7TZ-2B487-B Support Key A
D7TZ-2B486-B Spring A
D7AZ-19590-A Lubricant A
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP2487A86
TIME: 0.6 Hr. DLR. CODING: Basic Part No. 2B487 - Code: 33