The KarKaddy X hydraulic surge-brake system includes disc calipers and rotors, connecting lines and the DA91 actuator at the tongue. Demco provides separate exploded drawings for the brake circuit and the actuator, allowing you to distinguish a brake-hose problem from a master-cylinder or actuator component.
Original manufacturer exploded parts drawings
Use the Demco illustration to locate the component and match its original number in the tables. Open the full manufacturer PDF to enlarge small fasteners and callouts.
Parts by original diagram callout
Part numbers without purchase links are retained for identification; they are not presented as separately stocked items.
Hydraulic brakes parts
| Drawing | Callout | Demco number | Component | Product |
|---|---|---|---|---|
| Hydraulic brakes | 1 | 02196 | 5/16-inch self-tapping bolt | |
| Hydraulic brakes | 4 | 03927 | Ten-inch brake rotor | |
| Hydraulic brakes | 6 | 04369 | Five-bolt hub and spindle | |
| Hydraulic brakes | 7 | 05679 | Full-flow 1/8-inch brake fitting | |
| Hydraulic brakes | 8 | 11617 | Hydraulic quick coupler, male | |
| Hydraulic brakes | 9 | 11618 | Hydraulic quick coupler, female | |
| Hydraulic brakes | 10 | 12445 | Spring return system | |
| Hydraulic brakes | 11 | 12508 | 63-inch brake hose | |
| Hydraulic brakes | 13 | 13825-92 | Complete disc-brake caliper | |
| Hydraulic brakes | 14 | 13920-92 | Caliper mounting bracket | |
| Hydraulic brakes | 15 | 14533 | Nine-inch hydraulic line | |
| Hydraulic brakes | 17 | 16678 | 48-inch hydraulic line | |
| Hydraulic brakes | 18 | 6057 | DA91 surge actuator and drop tube | |
| Hydraulic brakes | 19 | SB7785 | Brake-line tee with mounting bracket | |
| Hydraulic brakes | 20 | SB7H67 | Seven-inch swivel brake hose |
DA91 actuator parts
| Drawing | Callout | Demco number | Component | Product |
|---|---|---|---|---|
| DA91 actuator | 6 | 03866-95 | Emergency-lever guide | |
| DA91 actuator | 7 | 03876 | Master-cylinder cap assembly | |
| DA91 actuator | 8 | 05408 | Actuator safety cable | |
| DA91 actuator | 10 | 05426 | Front shock pin | |
| DA91 actuator | 11 | 05687 | Master-cylinder boot | |
| DA91 actuator | 13 | 05951 | Emergency lever | |
| DA91 actuator | 15 | 05977 | DA91/DA95 pushrod assembly | |
| DA91 actuator | 17 | 09153 | Master-cylinder cork gasket | |
| DA91 actuator | 18 | 10965 | Upper slide channel | |
| DA91 actuator | 19 | 10966 | Lower slide channel | |
| DA91 actuator | 22 | 11164-95 | DA91 outer actuator case | |
| DA91 actuator | 23 | 11190 | Composite disc-brake master cylinder | |
| DA91 actuator | 26 | 12557 | Master-cylinder filler cap | |
| DA91 actuator | 28 | 17436-95 | Two-inch cast ball coupler | |
| DA91 actuator | 30 | SB12426 | Actuator shock damper |
Relevant NewRVParts product photographs
These photographs are taken from the matching NewRVParts product listings. Complete towing equipment, individual straps and mounting hardware are different products.
Identify the correct assembly
Demco specifies DOT 3 or DOT 4 brake fluid from a sealed container and the top caliper bleeder during service. Brake repairs must be completed and leak-tested by someone qualified to service hydraulic trailer brakes. This page identifies manufacturer service parts; individual hydraulic replacements are not linked without confirmed matching catalog listings.