Glossary “auxiliary shaft” Definition:
A separate shaft, in an overhead cam engine, that drives devices such as the fuel pump, oil pump, and distributor.

Glossary “auxiliary venturi” Definition:
Small secondary venturi mounted inside the main venturi of a carburetor to provide increased air velocity. May also be called a booster venturi.

Glossary “auxiliary air valve” Definition:
A device that allows air to bypass a closed throttle during engine start-up and warm-up.

Glossary “auxiliary seal” Definition:
A secondary seal mounted outside the seal housing. 1). To prevent refrigeration oil from escaping and entering the clutch assembly. 2). To aid in the prevention of the loss of fluid from a system.

Glossary “auxiliary section” Definition:
The section of a transmission housing the auxiliary drive gear, main shaft assembly, countershaft,, and synchronizer assembly, where range shifting occurs.