December 2018 December 2018 | Page 29

metal wire that is shielded by a concurrently emitted inert gas (usually argon or helium). As the wire melts, it joins the tubes to form the chassis. Next, the floor is welded in place, and the attaching hardware for the suspension, motor, and body are arc-welded to the frame. At this point, the chassis may need to be straightened to adjust for stresses introduced into the steel tubing during welding. Once it is straight, the chassis and body panels are cleaned and painted with a rust-preven- tive finish coating. Transaxle subassembly 3. Next, the right and left side of the transaxle housing are fit- ted with bearings, gears, seals, and axle housings. Because of the close fits required for the bearings and gears, these parts must be manually installed with special assembly tools. For example, a special gauge is used to determine the size of the spacer required under the pinion gear. These spacers are used to set preload (pressure between the gear faces) and backlash (spacing between the gear faces). Next, the two mat- ing surfaces of the transaxle housing are coated with an an- aerobic sealant, which hardens in the absence of air, and bolted together. 5. The rear cover is snapped into the base plate. The trans- former, which adjusts the direct current provided by the battery into an alternating current that is easier for the motor to use, is then bolted to the base plate. Next, the electric cable with plug, thermal switch, and DC Ammeter (used to measure the battery’s direct current output) are wired in and attached. Fi- nally, the wrap around and face cover are bolted in place. 4. The axle shafts and bear- ings are then slid into the axle housings and locked in place. The transaxle access plate and gasket are positioned and bolted in place. Auto-adjusting, drum type mechanical brakes are then assembled to each end of the axle housings. After the chassis and body panels are constructed, they are cleaned and painted. Next, the transaxle subassembly is bolted to the chassis. If the cart is an electric one, the battery charger assembly is also added at this time. Finally, the steering as- sembly, motor, braking system, and battery are added, and seat cushions and canopy (if neces- sary) are added. Battery charger assembly (elec- tric-powered carts only) The first step in golf cart manufacture is floor and body panel fabrication, which is done by sheet metal shearing or molding, depending on the material used. Next, the chassis or frame is made by cutting, beveling, and arc- welding the tubular pieces. After the chassis and body panels are constructed, they are cleaned and painted. Next, the transaxle subassembly is bolted to the chassis. If the cart is an electric one, the battery charger assembly is also added at this time. Finally, the steering as- sembly, motor, braking system, and battery are added, and seat cushions and canopy (if neces- sary) are added. Part 3 Coming in the January 2019 issue DECEMBER 2018 29