Where does the drive go in a manual gearbox?

Drive is transmitted through the input shaft to the layshaft and then to the mainshaft, except in direct drive – top gear – when the input shaft and the mainshaft are locked together. All the gears except those needed for reverse are constantly in mesh. The gears on the output shaft revolve freely around it, while those on the layshaft are fixed.

How does synchromesh work in a manual gearbox?

The synchromesh unit, splined the the mainshaft, rests near by. The fork moves the synchromesh towards the selected gear. Friction surfaces synchronise the shaft speeds, and synchromesh and gear lock together. The gear lever , operated by the driver, is connected to a series of selector rods in the top or side of the gearbox.

How does a four speed gearbox work in a car?

Constant-mesh four-speed gearbox. The gears are selected by a system of rods and levers operated by the gear lever. Drive is transmitted through the input shaft to the layshaft and then to the mainshaft, except in direct drive – top gear – when the input shaft and the mainshaft are locked together.

What can a part-turn gearbox be used for?

… part-turn gearboxes are used for manual and motorized (electric actuator) applications of ball valve, butterfly valve, plug valves, dampers and other 90o rotary (quarter-turn) valves. Operating Environment XW … motor or disc motor combined with a spur gear set and are ideal for integration in stair lifts or stair climbers.

How many shafts does a constant mesh gearbox have?

The most popular design is the constant-mesh gearbox. It has three shafts: the input shaft, the layshaft and the mainshaft, which run in bearings in the gearbox casing. There is also a shaft on which the reverse-gear idler pinion rotates. The engine drives the input shaft, which drives the layshaft.

How to replace driveshaft on BMW E90 rear wheel drive?

This tech article was performed on a rear wheel drive E90. Other models are similar and this article should help you get the job done. Working at transmission where driveshaft connects, remove three 18mm driveshaft flex-disc fasteners. (green arrows) Using a prybar or large flathead screwdriver, lever driveshaft away from transmission.

When do you know you have a gearbox problem?

The other common warning signs of gearbox problem that may lead to unnecessary gearbox repair costs are fluid leak, vibration, noise and oil contamination. Source: cars24.com If your vehicle is not running smoothly and shaking and producing grinding sounds then there must be an issue. It could be a sign that there is a problem with the gears.

What to do if your Land Rover gearbox is not working?

1. With the handbrake off, jack one wheel. 2. Engage diff lock and put the main box into neutral. 3. Spin the jacked wheel. If the wheel spins then Diff lock is not engaged. If it will not spin then Diff lock IS engaged. This page is constantly being updated with new Frequently Asked Questions.

What kind of gearbox does General Motors use?

According to an official report by the SAE (Society of Automotive Engineers) the design of the 10-speed gearbox is essentially all Ford, while GM was responsible for designing the 9-speed 9T transverse automatic gearbox.

What causes a gearbox to slip out of gear?

Slipping out of gear 1 Too much clearance between teeth in mesh. 2 Insufficient mesh of gears. 3 Worn gears or bushing or bearing retainers. 4 Weak or broken shifter lock spring. 5 Remote-control shifting mechanism out of adjustment. 6 Improper alignment of gearbox with engine.