- Joined
- Sep 9, 2012
- Messages
- 835
- Location
- Wiedemar, Germany
- First name
- Joachim
Machinery:
Zetor 2011, Zetor 3045, Zetor 5011, Zetor 7340 Economic
How do you shift a unsynchronized transmission, such as on older Zetor tractors? :think2:
Zetor Transmission diagrams in sectional view
With a little practice, shifting an unsynchronized gearbox is relatively easy:
Approach:
On the level without load, do not choose the lowest gear; with a 5-speed transmission you usually start with 4th gear, with a 4-speed transmission you use 3rd gear.
Upshift:
Using the example of 3rd to 4th gear:
1. Press the clutch, take out 3rd gear
2. Release clutch (gear lever in neutral)
3. Press the clutch, engage 4th gear
4. Let the clutch come back
Downshift:
1. Depress the clutch and take it out of gear
2. Release clutch (gear lever is in neutral)
3. briefly accelerate
4. Depress the clutch and select a lower gear
5. Release clutch
Downshifting is much more difficult than upshifting - but again it's just a matter of practice.
Note: On some Zetor models a partially synchronized transmission was installed, where the 2 highest gears in a group were each synchronized. E.g. with the UR1 series "2" (5211-7745T), such as the Zetor 5211 etc. Some Zetor models also have a gear brake, such as. 4911... and 5011 to 7745T, which makes shifting the unsynchronized gearbox easier, provided they are not worn and Go to:
View: https://youtu.be/_pD9R9Tqt8w
With synchronized transmission:
Go to: https://youtu.be/VI6nPhnHHcw
Why, on the other hand, are “synchronized” transmissions easier to shift?
Go to: https://youtu.be/o0WQh3VYLPM?t=18s[/SIZE ]
Zetor Transmission diagrams in sectional view
With a little practice, shifting an unsynchronized gearbox is relatively easy:
Approach:
On the level without load, do not choose the lowest gear; with a 5-speed transmission you usually start with 4th gear, with a 4-speed transmission you use 3rd gear.
Upshift:
Using the example of 3rd to 4th gear:
1. Press the clutch, take out 3rd gear
2. Release clutch (gear lever in neutral)
3. Press the clutch, engage 4th gear
4. Let the clutch come back
Downshift:
1. Depress the clutch and take it out of gear
2. Release clutch (gear lever is in neutral)
3. briefly accelerate
4. Depress the clutch and select a lower gear
5. Release clutch
Downshifting is much more difficult than upshifting - but again it's just a matter of practice.
Note: On some Zetor models a partially synchronized transmission was installed, where the 2 highest gears in a group were each synchronized. E.g. with the UR1 series "2" (5211-7745T), such as the Zetor 5211 etc. Some Zetor models also have a gear brake, such as. 4911... and 5011 to 7745T, which makes shifting the unsynchronized gearbox easier, provided they are not worn and Go to:
View: https://youtu.be/_pD9R9Tqt8w
With synchronized transmission:
Go to: https://youtu.be/VI6nPhnHHcw
Why, on the other hand, are “synchronized” transmissions easier to shift?
Go to: https://youtu.be/o0WQh3VYLPM?t=18s[/SIZE ]
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