Nissan Leaf transmission: Difference between revisions
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The Nissan Leaf uses a single gear reduction | The Nissan Leaf gearbox uses a single gear reduction and differential for transmitting power from the motor to the drive shafts. The gearbox also houses an electronic parking break mechanism which locks the input shaft from spinning via a solenoid operated lever. There is no oil pump and lubrication is provided by a splash lubrication system. | ||
[[File:LeafGearbox.jpg|thumb|Leaf gearbox with newer style sealed bearings in place]] | |||
The input splines are the same on both the EM61 and EM57 motors, but the bolt pattern is different. This means that you cannot use an EM61 motor with a EM57 gear box and vice versa. For more details on bolt patterns see [[Nissan leaf motor couplers and adapter plates]]. | |||
[[File:Inside gen2 gearbox.jpg|thumb|Gen2 gearbox with open bearings]] | |||
A helical LSD is also available as an optional product for both Gen1 and Gen2 gearboxes from Nismo japan: | |||
[[File:Inside gen2 gearbox.jpg|thumb| | |||
A helical LSD is available for both | |||
https://www.nismo.co.jp/products/nismo_parts/NEW_PARTS/index_2019.html#a2 | https://www.nismo.co.jp/products/nismo_parts/NEW_PARTS/index_2019.html#a2 | ||
== Gen1 with EM61 motor == | == Gen1 with EM61 motor == | ||
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17:32 / 17:75 | 17:32 / 17:75 | ||
Input shaft bearings: 6702 | |||
Center shaft bearings: 6306 | |||
EM57 gearboxes have been found to feature open bearings (probably earlier variants) as well as rubber sealed bearings. There has been reports of open bearings failing especially with prolonged running in reverse direction. | |||
Revision as of 20:37, 10 January 2023
The Nissan Leaf gearbox uses a single gear reduction and differential for transmitting power from the motor to the drive shafts. The gearbox also houses an electronic parking break mechanism which locks the input shaft from spinning via a solenoid operated lever. There is no oil pump and lubrication is provided by a splash lubrication system.
The input splines are the same on both the EM61 and EM57 motors, but the bolt pattern is different. This means that you cannot use an EM61 motor with a EM57 gear box and vice versa. For more details on bolt patterns see Nissan leaf motor couplers and adapter plates.
A helical LSD is also available as an optional product for both Gen1 and Gen2 gearboxes from Nismo japan:
https://www.nismo.co.jp/products/nismo_parts/NEW_PARTS/index_2019.html#a2
Gen1 with EM61 motor
gear ratios
17:31 / 17:74
Gen2 with EM57 motor
gear ratios
17:32 / 17:75
Input shaft bearings: 6702
Center shaft bearings: 6306
EM57 gearboxes have been found to feature open bearings (probably earlier variants) as well as rubber sealed bearings. There has been reports of open bearings failing especially with prolonged running in reverse direction.