Installation Instructions
| Note: The pivoting shoes on these brakes are self aligning around the brake drum. Shoe arms are interlocked to provide self-centering. Height adjustments should be within .010" of the center line of the drum. Care should be taken in mounting the brake so that the shoes are parallel to the drum, assuring that the maximum lining areas are in contact with the drum Check the brake to ensure that it neither has been damaged nor missing any parts. The linings should not be contaminated, and the brake drum should be clean. INSTALLATION TYPE I: BRAKE SHOULD BE SLIPPED OVER DRUM 1.0) Back off "C" to allow clearance between brake shoes and drum. Loosen shoe bolts "A". 1.1) Slip brake around drum. Bolt cown brake at (4) base mounting slots. Base should be snug to mounting surface. 1.2) Tighten nuts "C" just until shoe makes full contact with drum. Fully tighten shoe bolts "A". Fully tighten mounting bolts at base. 1.3) Continue tightening nuts "C" just until actuator push rod height is at dimension "B" (2.20") as shown in the maintenance instructions. 1.4) Confirm that proper torque setting has been maintained. Center groove of lower spring seat "H" should be in line with mark on torque data plate "G". Spring Adjustments can be made by turning adjusting bolt "F" as required. 1.5) Assuming that actuator wiring has been completed, energize brake. Confirm that shoe clearances at drum are equal. If they are not, loosen brake mounting bolts and re-center brake. Re-tighten mounting bolts and re-check shoe clearance. INSTALLATION TYPE II: BRAKE REQUIRES PARTIAL DISMANTLING 2.0) Back off nuts "C" to end of tie rod "E". Slide outer tie rod block "D" to end of tie rod "E". 2.1) Swing tie rod "E" up to a vertical position, and spread shoe arms "B" out as far as possible. Brake may now be slid under the drum shaft for mounting. 2.2) After brake has been slid under drum shaft, re-attach outer shoe arm "B" to outer tie rod block "D" and tie rod "E". 2.3) Continue brake installation per steps 1.1 through 1.5. INSTALLATION TYPE III: BRAKE WITH SELF-ADJUST OPTION (Self Adjust) 3.0) For brakes with the self adjust option installation is essentially the same as Installation types 1 and 2. Due to the self adjust mechanism, however, brake adjustment at tie rod as follows. 3.1) Remove shoulder bolt (Item 01). 3.2) Rotate clutch hub (Item 02) to adjust brake as required. 3.3) Re-install shoulder bolt (Item 01). |