Dexter's 10 × 2¼-inch electric drum brake is used in selected 3,500 lb trailer axle systems. The manufacturer's exploded drawing separates the complete left- and right-hand brakes from the shoes, magnet, manual adjuster and spring hardware. Use the printed catalog page and part numbers to identify your exact assembly.
Dexter original exploded brake assembly diagram
See the exploded view and part-number legend in Dexter's light-duty axle catalog, printed page 33. The drawing shows which service parts share a callout and which belong to the left or right brake.
Open the original manufacturer PDF and navigate to printed page 33 to enlarge the brake assembly.
Open Dexter's exploded view — printed page 33 (PDF)
Original manufacturer document: Dexter Light Duty Catalog LIT-122-00, 600–8,000 lb axle capacity.
Parts by factory drawing reference
The manufacturer numbers below describe individual components or complete brake kits. A blank product column means no exact, suitably documented current purchase link is provided. A brake kit beginning K23 is a different catalog number from an assembly beginning 023.
| Callout | Dexter number | Part | NewRVParts |
|---|---|---|---|
| 0 | K23-026-00 | Left-hand complete brake kit | |
| 0 | K23-027-00 | Right-hand complete brake kit | |
| Assembly | 023-027-00 | Right-hand brake assembly, without kit-prefix distinction | View product |
| 1 | 036-019-10 | Backing plate for post-March 2018 configuration | |
| 2 | 047-019-05 | Left-hand actuating lever | |
| 2 | 047-020-05 | Right-hand actuating lever | |
| 3 | 005-067-00 | Anchor-post washer on older version | |
| 4 | 027-005-00 | Magnet wire clips | |
| 5a | 046-056-00 | Single retractor spring, newer version | |
| 5b | 046-009-00 | Dual retractor springs, older version | |
| 6 | K71-047-00 | Shoe-and-lining service kit; manufacturer reference only | |
| 7 | 043-004-00 | Manual brake adjuster | |
| 8 | 046-018-00 | Adjusting-screw spring | |
| 9 | K71-104-00 | Electric brake magnet kit, green wire | View product |
| 10 | 046-007-00 | Adjuster-slot plugs | |
| 11 | 046-016-00 | Magnet wire grommet | |
| 12 | 007-041-00 | Press-in brake mounting bolts | |
| 13 | 006-017-01 | Brake mounting nuts, sold separately |
Matching NewRVParts product photographs
Compare these existing catalog products with the component number on your brake. The diagram is an identification reference; always confirm the axle, brake diameter, lining width and left/right side before ordering.
Choose the right brake and repair parts
Start with the brake backing-plate marking and measure the existing drum diameter and shoe width. A 10 × 2¼-inch 3,500 lb brake is different from a 10 × 1½-inch 3,000 lb brake and the 10 × 2¼-inch 4,400 lb version. The left- and right-hand assemblies also have distinct manufacturer numbers. Check mounting and wire arrangement before purchase.
Dexter moved this 3,500 lb family from two retractor springs to a single-spring arrangement. The current-style 046-056-00 and older 046-009-00 springs are shown under different callouts. When servicing an existing brake, follow the spring and anchor-post configuration fitted to that assembly rather than mixing individual older and newer components.
The standard manual-adjust brake uses K71-104-00 magnet service kit. The shoe-and-lining number K71-047-00 is included for identification, but no direct purchase link is provided until the linked listing's size description is reconciled. The 023-027-00 right-hand complete assembly and K71-104-00 magnet kit have exact-number product links below.
Read Dexter's spring-construction product bulletin (PDF)
See Dexter's brake magnet identification bulletin (PDF)