- Guarantee
- A promise by the manufacturer to fix or replace a specific part if it does not last for a specific time period or distance.
- Gudgeon pin
- British term for a Piston pin or wrist pin.
- Gudgeon pin boss
- British term for Piston boss
- Gudgeon pin circlip
- A British term for Piston pin circlip
- Gudgeon pin end
- British term for Piston pin end
- Guide bolts
- Floating calipers slide on these bolts to center over the rotor when braking action occurs.
- Guided bus
- Dedicated bus system which uses guide wheels within a fixed track for at least part of its route.
- Guide pins
- A caliper mounting bolt used for fastening a floating caliper to its mounting plate. Floating calipers slide on these pins to center over the rotor when braking action occurs.
- Guide rib
- A small protruding rubber ring or rib located just above or over the bead area. Serves as a guideline
for mounting the tire on a rim.
Also see
- Guillotine
- A bench tool for cutting sheet metal. The sheet is pulled in by two adjustable rollers (one above and the other below) as the tool cuts the metal in either a straight line or a curve as desired.
- Gull-wing door
-
A roof-hinged door that opens upward. It was first used on the Mercedes-Benz 300 SL in the early 1950s
Click image to supersize
Mercedes Gullwing
- Gulp valve
- A vacuum-controlled valve that admits fresh air to the inlet manifold during
deceleration to prevent backfiring in the exhaust system; its vacuum signal is
governed by a Thermovalve and a
Solenoid valve to ensure that the gulp valve action
does not interfere with cold start enrichment.
Also see
- Gum
- The Oxidized portions of the fuel that form deposits in
the Fuel system or engine parts.
Also see
- Gum deposit
- A sticky deposit that occurs when gasoline remains unused in the tank for a period of time. The use of detergent in gasoline (or pouring in some Fuel stabilizer) helps prevent its formation.
- Gum stock
- Rubber compounds containing only the necessary ingredients for vulcanizing.
Reinforcing fillers are not present in gum stock.
Also see
- Gun
-
- To press the accelerator hard to make the engine roar at top rpm.
- A device for applying paint or grease.
- Gutter
-
- The recessed part on a truck rim base that holds the lock ring in place.
- A channel at the edge of a road to carry away rainwater.
- A thin U-shaped channel on the sides of the roof of a car or truck to prevent water on the roof from splashing on you as you get into your vehicle.
- Gutter bevel
- Truck rims are beveled to provide for the gutter and this bevel matches a 28° taper at the inside of the cast spokes, holding the rim in place.