Drum Brake Specifications
DRUM BRAKE SPECIFICATIONS
| Application - Brake System |
In. (mm) |
| C10 & G10 to 4900 GVW - JB1 |
| Drum Diameter |
11.00 (279.4) |
| Drum Width |
2.00 (50.8) |
| Max. Drum Refinish Diam. |
11.06 (280.9) |
| Brake Cyl. Diameter |
1.00 (25.4) |
| Master Cyl. Diameter |
1.00 (25.4) |
| C10 & G10 to 5600 GVW - JB3 & JD3 |
| Drum Diameter |
11.00 (279.4) |
| Drum Width |
2.00 (50.8) |
| Max. Drum Refinish Diam. |
11.06 (280.9) |
| Brake Cyl. Diameter |
1.00 (25.4) |
| Master Cyl. Diameter |
1.12 (28.4) |
| C10 5200-6100 GVW - JB5 & JD5 |
| Drum Diameter |
11.15 (283.2) |
| Drum Width |
2.75 (69.9) |
| Max. Drum Refinish Diam. |
11.21 (284.7) |
| Brake Cyl. Diameter |
1.00 (25.4) |
| Master Cyl. Diameter |
1.12 (28.5) |
| C, G & K10; C,G,K, & P20 to 6800 GVW - JB6 & JD6 |
| Drum Diameter |
11.15 (283.2) |
| Drum Width |
2.75 (69.9) |
| Max. Drum Refinish Diam. |
11.21 (284.7) |
| Brake Cyl. Diameter |
0.94 (23.8) |
| Master Cyl. Diameter |
1.12 (28.5) |
| C, K, & P20; G & P30 6800-8600 GVW - JB7 & JD7 |
| Drum Diameter |
13.00 (330.2) |
| Drum Width |
2.50 (63.5) |
| Max. Drum Refinish Diam. |
13.06 (331.7) |
| Brake Cyl. Diameter |
1.06 (26.9) |
| Master Cyl. Diameter |
1.25 (31.8) |
| C, G, K, & P30 - JB8 |
| Drum Diameter |
13.00 (330.2) |
| Drum Width |
3.50 (88.9) |
| Max. Drum Refinish Diam. |
13.06 (331.7) |
| Brake Cyl. Diameter |
1.19 (30.2) |
| Master Cyl. Diameter |
1.34 (34.0) |