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Parts Required to Add Electric Over Hydraulic Drum Brakes to a Trailer

This article provides information on how to convert a trailer from electric brakes or no brakes to a trailer with electric over hydraulic drum brakes. This article identifies parts needed to convert a trailer to electric over hydraulic brakes and explains the compatibilities of the different parts.

Common Combinations of Trailer Brake Components Typical Components by Axle Capacity for Adding Hydraulic Drum Brakes Axle Size EZ Lube Option Brake Flange Bearings Seal Brake Assembly Hub/Drum and Bolt Pattern Electric over Hydraulic Actuator Breakaway Kit Brake Line Kit 2,000-lb Axle 1-3/4" Diameter Standard 4-34 Inner - L44649 Outer - L44649 10-9 LH - 7" x 1-3/4" RH - 7" x 1-3/4" 4 on 4" - 8-276-5 5 on 4-1/2" - 8-271-7UC3 T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 EZ Lube 4-34 Inner - L44649 Outer - L44649 RG06-020 (10-60) LH - 7" x 1-3/4" RH - 7" x 1-3/4" 5 on 4-1/2" - 8-271-7UC3-EZ T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 3,500-lb Axle 2-3/8" Diameter Standard 4-35 Inner - L68149 Outer - L44649 58846 LH - 10" x 2-1/4" RH - 10" x 2-1/4" 5 on 4-1/2" - 84546UC3 T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 Double axle - T4830000 EZ Lube 4-35 Inner - L68149 Outer - L44649 10-19 LH - 10" x 2-1/4" RH - 10" x 2-1/4" 5 on 4-1/2" - 84546UC3-EZ T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 Double axle - T4830000 5,200-lb and 6,000-lb Axle 3" Diameter Standard 4-44-1 Inner - 25580 Outer - 15123 or LM67048 GS-2125DL (10-1) or GS-2250DL LH - 12" x 2" RH - 12" x 2" 6 on 5-1/2" - 42656 T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 Double axle - T4830000 Inner - 25580 Outer - 02475 or 14125A GS-2125DL (10-1) or GS-2250DL LH - 12" x 2" RH - 12" x 2" 8 on 6-1/2" - 42866UC3 T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 Double axle - T4830000 EZ Lube 4-44-1 Inner - 25580 Outer - 15123 or LM67048 RG06-090 (10-10) or RG06-070 (10-36) LH - 12" x 2" RH - 12" x 2" 6 on 5-1/2" - 8-201-5UC3-EZ T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 Double axle - T4830000 Inner - 25580 Outer - 02475 or 14125A RG06-090 (10-10) or RG06-070 (10-36) LH - 12" x 2" RH - 12" x 2" 8 on 6-1/2" - 42866UC3-EZ T4822500 HBA-10 K71-650 50-80-313 Single axle - T4829900 Double axle - T4830000 Updated by: Raymond P. |

Parts Needed to Add Hydraulic Drum Brakes to a Trailer

trailer, brakes, drum brakes, hydraulic brakes, actuator, brake actuator, hub, drum, brake line, spindle, bearing, seal, flange, brake flange, hub-and-drum, brake assembly

Common Combinations of Trailer Brake Components Typical Components by Axle Capacity for Adding Hydraulic Drum Brakes Axle Size EZ Lube Option Brake Flange Bearings Seal Brake Assembly Hub/Drum and Bolt Pattern Surge Actuator Brake Line Kit 2,000-lb Axle 1-3/4" Diameter Standard 4-34 Inner - L44649 Outer - L44649 10-9 LH - 7" x 1-3/4" RH - 7" x 1-3/4" 4 on 4" - 8-276-5 5 on 4-1/2" - T1554500042 T4332900 Single axle - T4829900 EZ Lube 4-34 Inner - L44649 Outer - L44649 10-60 LH - 7" x 1-3/4" RH - 7" x 1-3/4" 5 on 4-1/2" - 8-271-7UC3-EZ T4332900 Single axle - T4829900 3,500-lb Axle 2-3/8" Diameter Standard 4-35 Inner - L68149 Outer - L44649 58846 LH - 10" x 2-1/4" RH - 10" x 2-1/4" 5 on 4-1/2" - 84546UC3 T43329007K T43397007K Single axle - T4829900 Double axle - T4830000 EZ Lube 4-35 Inner - L68149 Outer - L44649 10-19 LH - 10" x 2-1/4" RH - 10" x 2-1/4" 5 on 4-1/2" - 84546UC3-EZ T43329007K T43397007K Single axle - T4829900 Double axle - T4830000 5,200-lb and 6,000-lb Axle 3" Diameter Standard 4-44-1 Inner - 25580 Outer - 15123 or LM67048 10-1 or 42385 LH - 12" x 2" RH - 12" x 2" 6 on 5-1/2" - 42656 T2477600 T2478100 Single axle - T4829900 Double axle - T4830000 Inner - 25580 Outer - 02475 or 14125A 10-1 or 42385 LH - 12" x 2" RH - 12" x 2" 8 on 6-1/2" - 42866UC3 T2477600 T2478100 Single axle - T4829900 Double axle - T4830000 EZ Lube 4-44-1 Inner - 25580 Outer - 15123 or LM67048 10-10 or 10-36 LH - 12" x 2" RH - 12" x 2" 6 on 5-1/2" - 8-201-5UC3-EZ T2477600 T2478100 Single axle - T4829900 Double axle - T4830000 Inner - 25580 Outer - 02475 or 14125A 10-10 or 10-36 LH - 12" x 2" RH - 12" x 2" 8 on 6-1/2" - 42866UC3-EZ T2477600 T2478100 Single axle - T4829900 Double axle - T4830000 Updated by: Raymond P. |

Replacing the Bearing, Races and Seals on a Trailer Hub

Description on how to remove, grease, and reinstall trailer bearings, races, and seals. Also some quick tips on backing the bearings with grease.

L44643 Inner/Outer for BT8 1.000" L44610 1.980" L44649 Inner/Outer for BTR, Outer for #84 Spindles 1.063" L44610 1.980" L68149 Inner for 3.5K Axles 1.378" L68110 2.327" L68149 Inner for 4.4K Axles 1.378" L68111 2.362" 1779 Outer for 22834 Hub 0.938" 1729 2.240" 2788 Inner for 22834 Hub 1.500" 2729 3.000" LM48548 Inner for AH25555F Agricultural Hub 1.375" LM48510 2.563" LM67048 Outer for 8-201-5, 8-213-5 1.250" LM67010 2.328" 15123 Outer for 42655, 42656, 8-174-5 1.250" 15245 2.441" 14125A Outer for 42865, 42866, 8-219-4, 8-231-9 1.250" 14276 2.717" 25580 #42, 8K, 9K, Inner (Pre 10/89), Outer for #99 1.750" 25520 3.265" 31-71-3 50MM Cartridge Style, Nev-R-Lube 50MM - - 31-72-3 35MM Cartridge Style, Nev-R-Lube 35MM - - 31-73-3 42MM Cartridge Style, Nev-R-Lube 42MM - - 02475 Outer for 8-231-8, 8-218-9, 8-187-7 1.250" 02420 2.688" 2585 Outer for 8-232-5 1.313" 2520 2.750" 387A Outer for 8-214-5, Inner for 8-260-5 2.250" 382A 3.813" 395S Inner for 8-214-5 2.625" 394A 4.331" 3984 Inner for 8-216-5, 8-214-8, 8-217-5, 8-272-5 2.625" 3920 4.438" 28682 Outer for 8-216-5, 8-214-8, 8-217-5, 8-727-5 2.250" 28622 3.844" 28580 Inner for all #99 Spindles 2.000" 28521 2.875" JM205149 For 090814 Hayes 10K 1.969" JM205110 3.543" JM511946 For 090814 Hayes 10K 2.559" JM511910 4.331" HM212049 Outer for 20K - 25K Axles 2.625" HM212011 4.813" HM218248 Inner for 20K - 25K Axles 3.542" HM218210 5.786" LM11949 Outer for AH15450E Agricultural Hub 0.750" LM11910 1.781" 29749 For AH30660F Agricultural Hub 1.500" 29710 2.563" 501349 Outer for AH60880F, Inner for AH35660F 1.625" 501310 2.891" 506849 For AH60880F Agricultural Hub 2.165" 506810 3.543" 603049 For AH45880F Agricultural Hub 1.781" 603011 3.063" Wheel Bearing Kits Part No. |