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Dexter 12 1/4 x 3 3/8" 7 Bolt Duo-Servo Hydraulic Trailer Brake

Capacity: 10,000 LBS per pair (Dexter 9,000 lb. after 1989)

Redesigned with forward adjust feature in February 1997.

Duo-Servo
Dexter 12 1/4 X 3 3/8 Inch 7 Bolt Duo-Servo Hydraulic Trailer Brake Parts Illustration
ITEM # *REFERENCE # DESCRIPTION

Assemblies

23-410 (LH) 178275 Dexter 12 X 3 3/8" LH 7 Bolt Duo-Servo Hydraulic Trailer Brake Assembly
23-411 (RH) 178300 Dexter 12 X 3 3/8" RH 7 Bolt Duo-Servo Hydraulic Trailer Brake Assembly

Replacement Parts

BP04-260 (1) 208600 Shoe/Lining (One Wheel) LH
BP04-270 (2) 208800 Shoe/Lining (One Wheel) RH
BP06-235 (3) 214300 Shoe Hold Down Kit
BP07-240 (4) 219200 Shoe Return Spring
BP08-150 (5) 220900 Adjuster Spring
BP10-135 (6) 223700 Adjuster Lever and Spring Left Hand
BP10-145 (6) 223900 Adjuster Lever and Spring Right Hand
BP10-150 (5,6,7) 223950 Adjuster Kit for Forward Adjust Brakes LH
BP10-160 (5,6,7) 223960 Adjuster Kit for Forward Adjust Brakes RH
7 225500 Adjuster Cable and Retainer, Before 1987 (14.25 Inch Long) REFERENCE ONLY no longer available
7 225610 Adjuster Cable and Retainer, Before 1987-96 (14 Inch Long) REFERENCE ONLY no longer available
BP15-085 (8) 229100 Brake Dust Shield (One Piece) (7 Bolt)
BP16-050 (9) 232600 Wheel Cylinder Rebuild Kit (1 Inch Bore)
10 234810 Bleeder Screw (Qty 4) REFERENCE ONLY no longer available
11 235010 Cylinder Push Rod (Qty 4) REFERENCE ONLY no longer available
54-33 (11 Alt) 235011 Cylinder Push Rod 2 per wheel required
12 235025 Piston Stop Bar, After 1987 REFERENCE ONLY no longer available
34-62 (12 Alt) 235026 Piston Stop Bar, After 1987
13 235400 Brake Shoe Anchor Pin REFERENCE ONLY no longer available

*Note the linked reference numbers will take you to the Humphreys Trailer Parts catalog where the part can be purchased.

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