See the parts of a manual transmission in operation:
0:00 Introduction
0:53 The Input shaft
1:06 The Countershaft
1:17 The Output shaft
1:40 Shift Shafts
1:55 3-4 shift shaft and 3-4 shift fork
2:08 1-2 shift shaft and 1-2 shift fork
2:19 Reverse shift shaft and reverse shift fork
2:30 5th gear shift shaft and 5th shift fork
3:33 Input shaft and splines
3:42 Clutch disk connection
4:00 Pilot bearing location
4:45 Synchronizer assemblies and operation
7:20 MUST SEE! Synchronizer assemblies rotate with the output shaft
8:20 MUST SEE! Gears rotate with the input shaft
9:07 1st Gear demonstration
12:20 2nd Gear demonstration
13:24 3rd Gear demonstration
14:35 Synchronizer wear and end gap discussion
16:25 The physical size of gears versus their gear ratio
16:55 4th Gear (input gear) demonstration
17:50 5th Gear demonstration
19:57 Neutral demonstration
20:07 Reverse Gear demonstration
21:20 Common manual transmission failures
23:00 Differences with a front-wheel-drive manual transaxle

Weber State University (WSU) – Automotive Technology Department – Transmission Lab. This video demonstrates the operation of a typical manual transmission. The information here applies to most manual transmissions and transaxles. This particular transmission is a 1992 Toyota “Truck” 5-speed Aisin R150 model. A version of this same transmission is used in new vehicles today.

This video helps demonstrate part of the following NATEF Tasks:
A3.C.3 “Diagnose noise concerns through the application of transmission/transaxle powerflow principles.”, a priority 2 task.
A3.C.4 “Diagnose hard shifting and jumping out of gear concerns; determine necessary action.”, a priority 2 task.

We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit:

This video was created and edited by John D. Kelly at WSU. For a full biography, see

Visit my other youtube channel to see the amazing NVH app for vibration diagnosis!

I apologize for the coughing during the video. I am not a smoker, I am not sick, I just took a drink of water before shooting the video and got some water down the wrong pipe. I was just trying to shoot a video for my students. Donate to the Department of Automotive Technology at Weber state University here:

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