Parts Needed to Convert Military Trailer M105A2 to Electric Brakes
Question:
With the existing brake setup on the M105A2 trailer, is it possible to use the HBA10 in conjunction with the existing brakes from the air diaphram back? The brakes are in good working order, I just do not have air brakes on the towing vehicle. I will be towing with a 2005 Ford F-250. I saw the solution using all new bearings, hub, and drums, but was wondering if there is a way to use existing equipment. Thanks for you help in advance
asked by: William B
Expert Reply:
We've had this question before and we were able to determine that your M105A2 either uses a 5200 lb or 6000 lb axle so for hub drums you most likely will need the part # AKHD-655-6-K. This hub and drum comes with inner bearing part # 25580 and outer bearing part # 15123. It fits a 12 inch diameter brake assembly. You do want to check your existing bearings for their bearing numbers. There should be bearing numbers stamped on the side. If there is not numbers stamped on the side you can measure the bearing with a digital caliper like part # PTW80157. The inner bearing of the hub I mentioned measures 1.378 inches and the outer bearing measures 1.063 inches.
Then for brake assemblies you'd want the # AKEBRK-7R-SA for the right hand side and part # AKEBRK-7L-SA for the left hand side.
I also attached a help article that covers converting a trailer to electric brakes for you to check out as well.
Products Referenced in This Question
Replacement Trailer Hub Bearing - 15123
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- 1.250 Inch I.D.
- Bearing 15123
- Race 15245
- 5200 lbs Axle
- 6000 lbs Axle
- 7000 lbs Axle
- etrailer
more information >
Replacement Trailer Hub Bearing - 25580
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- 1.750 Inch I.D.
- Bearing 25580
- Race 25520
- 10000 lbs Axle
- 6000 lbs Axle
- 7000 lbs Axle
- 8000 lbs Axle
- 9000 lbs Axle
- etrailer
more information >
Electric Trailer Brake Assembly - Self-Adjusting - 12" - Left Hand - 5,200 lbs to 7,000 lbs
- Accessories and Parts
- Trailer Brakes
- Electric Drum Brakes
- LH
- 5200 - 7000 lbs
- Brake Assembly
- Self Adjust
- 12 x 2 Inch Drum
- etrailer
more information >
Electric Trailer Brake Assembly - Self-Adjusting - 12" - Right Hand - 5,200 lbs to 7,000 lbs
- Accessories and Parts
- Trailer Brakes
- Electric Drum Brakes
- RH
- 5200 - 7000 lbs
- Brake Assembly
- Self Adjust
- 12 x 2 Inch Drum
- etrailer
more information >
Trailer Hub and Drum Assembly - 5,200-lb and 6,000-lb Axles - 12" - 6 on 5-1/2 - Pre-Greased
- Trailer Hubs and Drums
- Hub with Integrated Drum
- Pre-Greased
- Standard
- 25580
- 15123
- For 5200 lbs Axles
- For 6000 lbs Axles
- 1/2 Inch Stud
- 6 on 5-1/2 Inch
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- etrailer
more information >
Hydrastar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- 1000 psi
- Drum Brakes
- Hydrastar
more information >
Hydrastar Electric Over Hydraulic Actuator for Drum Brakes - 1,200 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- 1200 psi
- Drum Brakes
- Hydrastar
more information >
4" Carbon Fiber Digital Caliper
- Hand Tools
- Measuring and Layout Tools
- Digital Calipers
- Carbon Fiber
- Performance Tool
more information >
Product Page this Question was Asked From
Hydrastar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- 1000 psi
- Drum Brakes
- Hydrastar
more information >
Featured Help Information
Instructions
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on Brake Actuator
William B.
11/6/2019
With the existing brake setup on the M105A2 trailer, is it possible to use the HBA10 in conjunction with the existing brakes from the air diaphram back? The brakes are in good working order, I just do not have air brakes on the towing vehicle. I will be towing with a 2005 Ford F-250. I saw the solution using all new bearings, hub, and drums, but was wondering if there is a way to use existing equipment. Thanks for you help in advance