Columbia CR-10 Chariot, Service Manual

To remove the brakes (See Figure 4.2.3): 



Raise and block up the rear of the vehicle.  



On the drive wheel side, remove the drive chain master link (A) and the drive chain. 



Remove the four wheel lug nuts holding the rear wheels to the rear hubs and remove the wheels. 



Remove the dust cap. 



Remove the cotter pin and castle nut from the spindle (B). 



Remove the hub (C) from the spindle.  On the drive wheel side, it will be necessary to depress the 
treadle to release the brake before the hub with drum/sprocket assembly can be removed. 



Remove 7/16" nut (D) from the bolt at the upper end of the treadle to brake assembly linkage and 
disconnect the linkage. 



Undo the springs and move the brake shoes aside allowing access to the backing plate (E) and the 
backing plate retainer screws (not shown). 



Remove brake backing plate retainer screws and brake backing plate spacer (F). 

To install brakes: 



Install the brake backing plate spacer and the brake backing plate. Use a thread-locking compound 
on the brake backing plate retainer screws and tighten the screws, then loosen each screw 1/4 turn. 



Connect the upper end of the treadle to the brake assembly linkage and torque the nut to 120 inch 
pounds. 



Temporarily install the brake shoes, hub with drum/sprocket assembly and castle nut on hub. 



Depress rear of treadle to apply the brakes and to center brake assembly on spindle. 



Carefully remove the castle nut, hub with drum/sprocket assembly and brake shoes without moving 
the brake backing plate. 



Torque the brake backing plate retainer screws to 200 inch pounds. 



Install brake drum sprocket/hub assembly. 



Install the hub on the spindle.  On the drive wheel side it will be necessary to depress the treadle 
before the hub with drum/sprocket assembly can be installed. 



Install the castle nut on the spindle. Torque the castle nut to 120 inch pounds and then back the 
castle nut off two slots and Install the cotter pin. 



Install the dust cap. 



On the drive wheel side, install the drive chain and master link. See Drive Chain Section 4.4 for 
proper chain adjustment. 



Install the wheels and lug nuts and torque to 65 foot pounds. Tighten lug nuts evenly in a star 
pattern. 

A 

B 

C 

D 

Figure 4.2.3 

E 

F 

4-2