User manual BENDIX DOUBLE ANCHOR PIN CAM BRAKE

[. . . ] ® Bendix® Double Anchor Pin Cam Brake FIGURE 1 GENERAL DESCRIPTION The Bendix 16-1/2" x 7" double anchor pin cam brake is designed for use on heavy duty highway vehicles. It is a mechanically actuated, leading /trailing shoe brake with a fixed position cam and anchors. The brake consists of two fabricated steel shoe assemblies individually anchored to a cast iron torque spider and actuated by a single forged cam shaft. Two retaining springs secure the shoe assemblies to their respective anchor pins. [. . . ] Replace anchor pin bushings and/or anchor pins. Check cam shaft bushing for signs of wear. (See 1 B) Bearing surface should be smooth and free of any pitting or fractures. NOTE: If it is determined that the bushing requires replacement, change both cam shaft bushings. Inspect rollers and pins for flat spots, galling, broken or cracked surfaces. Inspect anchor pin for worn, broken or cracked surfaces. Replace as necessary. 5 NOTE: BOTH LIP SEALS POINT THE SAME DIRECTION LIP TOWARD SLACK ADJUSTER . 094" 6" LIP SEAL CAM END FIGURE 8 - CHECKING SLACK ADJUSTER BACKLASH SLACK ADJUSTER END ACTUATOR BRACKET AND CAM TUBE SPIDER FIGURE 9 - SEAL INSTALLATION LIP SEAL 6. Check shoes for bent shoe webs, cracks in shoe table welds or webs, and elongated rivet holes. Replace shoes if any of these conditions exist. Measure the shoe span by loosely installing the anchor pin and cam roller in the appropriate ends of the shoe web. If the distance from center of anchor pin to center of cam roller exceeds 11. 72" replace shoe. Replace when any of the following conditions exist: 1. Lining thickness at thinnest point is 1/4" or less. Linings are cracked or worn in an unusual or odd pattern, i. e. , lining wear tapered from side to side across shoe table. Unusual wear patterns can indicate damage to foundation brake parts. Rivet holes are elongated in lining or shoes. Linings can be moved by hand, i. e. ; loose rivets. Drive into place using an Owatonna 630-7 piloted driver or similar tool taking care not to damage or distort the I. D. NOTE: One of the cam shaft bushings is installed in the actuator bracket and cam tube. Install new cam shaft grease seals in the end of the cam tube and actuator bracket and the cam shaft opening in the spider. Use an Owatonna 630-7 piloted driver or similar tool to install grease seals. CAUTION: The lip of the grease seals must be installed correctly to prevent possible damage. The lip of the seal that is installed in the spider must enter the opening first. [. . . ] Uneven brake adjustment (side to side) J. Different air chamber size or slack adjuster length (side to side). 4. Linings tapered across width. BRAKE SHOE AND LINING TROUBLESHOOTING CHART CAUSE REMEDY A. Regrind linings to drum radius minus . 015". [. . . ]