Troubleshooting an Actuator that Leaks from the Reverse Lock Out Solenoid
Question:
My old actuator, the brake line screwed into the solenoid. Ordered a new one, and the brake line screws into the cylinder, but leaks. I Dont believe it screws in far enough before it bottoms out.
asked by: Monte K
Expert Reply:
There are a couple options that could be causing this issue with your Replacement Master Cylinder Assembly # DX44FR. The first would be an incorrect fitting. The female brass fitting exiting the solenoid or master cylinder body of the K71-757-00 (DX44FR) is a 3/16” inverted flare fitting which is a US standard “straight” male metal brake line or male brake hose thread. The female “cone” inside the inverted flare fitting seats and seals on the male cone inside the solenoid female fitting.
What can be confusing is that a 1/8” tapered male pipe thread fitting (which would be incorrect) will also easily screw into that fitting but will never seal. If this is the size of fitting you have, this would be the issue.
Otherwise there have been some who have experienced some inverted flare brake hoses and lines that were manufactured incorrectly with the wrong sealing angle on their ends. That might also be the problem.
The correct fittings should seal with five foot pounds of torque, so you will want to check and ensure you have the correct size fittings. Excess torque will ruin or break off the fittings.
Product Page this Question was Asked From
Replacement Master Cylinder Assembly for Dexter Brake Actuators - Disc Brakes
- Accessories and Parts
- Brake Actuator
- Disc Brakes
- Master Cylinder
- Dexter
more information >
Continue Researching
- Shop: Replacement Master Cylinder Assembly for Dexter Brake Actuators - Disc Brakes
- Search Results: 12 x 20 lug nuts
- Q&A: Replacement Master Cylinder for Dexter UFP A-60 Brake Actuator
- Shop: Replacement Master Cylinder Assembly for Dexter Brake Actuators - Drum Brakes
- Video: Review of Dexter Brake Actuator - Replacement Master Cylinder with Solenoid - DX44FR
- Shop: Replacement Shock Absorber Spring Kit for Dexter Brake Actuators
- Article: How to Bleed Your Trailer Surge Brakes
- Q&A: Replacement Master Cylinder And Shock For UFP A-60 / A-75 / XR-84 Surge Brake Actuators
- Shop: Dexter DX7.5L A-60 Brake Actuator w Electric Lockout - Bolt On - Disc - 2" Ball - Zinc - 7.5K
- Q&A: Replacement Master Cylinder For Dexter Brake Actuator A60, A75, XR84
- Q&A: Troubleshooting UFP Surge Brake Coupler Operation
- Q&A: Replacement Shock Absorber For UFP A-75 Brake Actuator
- Q&A: UFP A-60 Trailer Coupler Actuator Shock Replacement
- Search Results: ufp master cylinder
- Search Results: bleeder screw
- Search Results: 34762
- Search Results: 34044
- Search Results: dx89fr
- Shop: Replacement Shock Absorber for Dexter Model 60 Brake Actuators
- Q&A: Replacement Actuator for UFP A-60 34044
- Shop: Replacement Orifice Connector for Dexter Actuators
- Shop: Replacement Inner Member for Dexter DX7.5L Actuator - Tandem Axle w/ Disc - 2" Ball - 7,500 lbs
- Search Results: dx44fr
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Shop: Trailer Wiring
- Article: Most Popular Wheel Bearings
- Video: Choosing the Right Brake Controller
- Video: Choosing the Right Trailer Wiring
- Shop: Brake Controller
on Accessories and Parts
