03Delco Remy Training and Starter Motor Mounting TechTip1300

MIDWESTWHEEL.COM IOWA MISSOURI DES MOINES 1436 E. Ovid Ave. office 515.265.1491 fax 515.265.4120 parts fax 800.314.4329 parts 800.888.0248 CEDAR RAPIDS 200 50th Ave. S.W. main 319.365.4453 fax 319.365.6327 parts fax 877.706.6085 parts 800.332.5435 DAVENPORT 8502 Northwest Blvd. main 563.322.2671 fax 563.322.5940 parts 800.553.1886 SIOUX CITY 1819 E. 4th St. main 712.252.7969 fax 712.252.6149 parts 800.943.3534 CLEAR LAKE 840 Hwy. 18 W. main 641.357.7101 fax 641.357.8190 parts fax 800.548.9674 parts 800.397.5630 KANSAS CITY 5801 E. Front St. main 816.471.1552 fax 816.471.0813 parts 800.821.7402 TRUCK PARTS SUPER STORE TM May 23, 2017 (03Delco Remy Training and Starter Motor Mounting TechTip) D id you ever wonder why motor mounting holes are larger in size than the fasteners? To understand, you must first look at the starting motor mountings for heavy duty diesel engines. Manufacturers use either a SAE Type 1 or a SAE Type 3 drive housing. SAE Type 1 Mounting: 180, 90 & 90 degrees SAE Type 3 Mounting: All 120 degrees Regardless of the mounting style, each starting motor drive housing has mounting holes that secure the motor to the engine bell housing or the transmission with the use of fasteners. The holes’ sizes may vary from model to model and among manufacturers. On the drive housing, there also is a mounting register that aligns the motor in place for proper pinion-to-ring-gear mesh. The tolerance for the mounting register is much closer to the engine-mating surface in order to provide the correct positioning. The larger mounting holes allow the motor to align and be positioned with the register for proper operation. It does not negatively impact performance in any way. Tech Tip: Understanding Starter Motor Mounting Watch our s video to learn motor moun in a as e m he r to with mance CONNECT or Mounting Watch our short Tech Tip video to learn more about motor mounting holes. TECH Tips Understanding Starter Motor Mounting Did you ever wonder why motor mounting holes are larger in size than the fasteners? To understand, you must first lo k at the starting motor mountings for heavy duty diesel engin s. Ma ufacturers use ither a SAE Type 1 or a SAE Type 3 drive housing. Regardless of the mounting style, each starting motor drive housing has mounting holes that secure the motor to the engine bell housing or the transmission with the u e of fasteners. The holes’ izes may vary from model to model and among manufacturers. On the drive housing, there also is a mounting register that aligns the motor in place for proper pinion-to-ring-gear mesh. The tolerance for the mounting register is much closer to the engine-mating surface in order to provide the correct positioning. T lar er mounting holes allow the motor to ali n and be osi ioned with the register for proper operation. It does not negatively impact performance in any way. https://www.youtube.com/watch?v=ave8y_rEe7A&feature=youtu.be