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TSB Main Page
TSB
99-4-2
  • BRAKES - ILLUMINATION OF RED BRAKE WARNING LAMP - BRAKE FLUID LEAK FROM REAR CALIPER - VEHICLES BUILT THROUGH 10/22/1998
  • BRAKES - INCREASED BRAKE PEDAL TRAVEL - BRAKE FLUID LEAK FROM REAR CALIPER - VEHICLES BUILT THROUGH 10/22/1998
  • BRAKES - SPONGY BRAKE PEDAL FEEL - BRAKE FLUID LEAK FROM REAR CALIPER - VEHICLES BUILT THROUGH 10/22/1998
  • LAMP - ILLUMINATION OF RED BRAKE WARNING LAMP - BRAKE FLUID LEAK FROM REAR CALIPER - VEHICLES BUILT THROUGH 10/22/1998
Publication Date: FEBRUARY 19, 1999

LIGHT TRUCK:
1999 F-250 HD, F-350, F-450, F-550, SUPER DUTY F SERIES

NOTE: THIS TSB ARTICLE IS FOR 4X2 VEHICLES ONLY. OWNER NOTIFICATION PROGRAM (ONP) 98B32 WILL COVER 4X4 VEHICLES.

ISSUE:

Customers may report a brake fluid leak at the left rear wheel which may result in a spongy brake pedal, increased pedal travel, and/or illumination of the red brake warning lamp on some vehicles driven frequently on gravel roads or similarly severe conditions. This may be caused by a loose brake hose connection at the left rear brake caliper. (This condition may also occur on the right rear brake caliper of F-550 vehicles built on or after 6/15/1998.) The brake hose joint may lose clamp load and begin to leak due to stone impingement on the hose banjo block which may cause additional deformation of the copper washers resulting in the reduction of clamp load and subsequent joint leak.

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