Tesla Roadster

PEM Motor Block Upgrade

This injection molded ABS plastic connector block becomes increasingly more brittle with age. Repeated loosening and re-torquing of the 8MM bolts connecting the 3Ø AC Induction Drive Motor to the PEM, usually performed annually, eventually weakens this connector block, and prevents a solid connection to the Motor.

This PEM output port is the high amperage, high voltage, connection to the Drive Motor which propels the car.

Three square captivator nuts, loosely recessed into this connector block, eventually place enough stress onto the connector block during loosening or tightening. This results in cracking of the ABS square nut captivator pocket, and in severe cases as shown, the block crumbles.

The injection mold for this assembly is long gone, and the most cost effective way to reproduce this part in small quantities is 3D printing. Our Machine Shop modifies the PEM output Motor Drive Control bus bar by inserting pem-nuts into the bus. The stress is now relocated onto a much stronger copper bus bar shown below.

We also offer a complete PEM upgrade and rebuild

PEM Rebuild Info

Tesla Service Center

Gruber Motor Company is an independent Electric Vehicle Service Center specializing in Tesla vehicles. Electric Vehicles are a developing transportation method. A new breed of Automotive Service Centers are emerging that more closely resemble electronics and software engineering labs. Gruber Motor Company has decades long experience servicing Critical Power equipment which is the same fundamental technology now found in Electric Cars.

Housed in an 8000 sq’ state of the art Service Center, we schedule you right in. We believe in old fashioned customer service, always ready to exceed your expectations. We can also handle low tech auto – tires, brakes, detailing, powder coating, clear bra, paint, and much more.

We are proud of our EV Service Center of the Future

Our EV Lab is where Software and Electronics repairs take place

Gruber Motor Company
203 West Lone Cactus
Phoenix, Arizona 85027
EV@GRUBER>COM

602-863-2655 X500

Gruber Motors