Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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System Specifications








Brake Type DSSA

Drum Size 12 X 3.0 in

Brake Cylinder Diameter [1] 1.0625 in

Lining Thickness (Primary) 0.204 in

Lining Thickness (Secondary) 0.267 in

Lining Length (Primary) 11.40 in

Lining Length (Secondary) 12.66 in

Area Per Brake (Primary) 38.46 in

Area Per Brake (Secondary) 38.46 in

Total Area Per Brake 72.55 sq. in

Total Area Per Axle 145.1 sq. in

Swept Area per Axle 226.20 sq. in

[1] - Max. Allowable hone 0.003 in.

NOTE: The brake drum must be replaced if the inside diameter is outside the maximum limit. The maximum diameter is stamped on the outside of the brake drum.