General part
Type - Four or five forward gears and reverse. Forward gears are fully synchronized (on the MT75 gearbox and reverse gear). The overdrive gear is installed on the G-type gearbox)
Designation
- Four-speed gearbox - Type G
- Five-speed gearbox - Type N (until 1988.), MT75 (since 1988)
Gear ratios
G-type gearbox:
- 1st - 4.06:1
- 2nd - 2.16:1
- 3rd - 1.38:1
- 3rd + overdrive gear - 1.07:1
- 4th - 0.78:1
- Reverse - 4.29:1
N-type gearbox:
- 1st - 3.90:1
- 2nd - 2.87:1
- 3rd - 1.38:1
- 4th - 1.00:1
- 5th - 0.81:1
- Reverse - 3.66:1
Gearbox MT75:
| Gear ratios | ||
| Narrow | Wide intervals* | |
| 1st | 3.89:1 | 4.17:1 |
| 2nd | 2.08:1 | 2.24:1 |
| 3rd | 1.34:1 | 1.47:1 |
| 4th | 1.00:1 | 1.00:1 |
| 5th | 0.82:1 | 0.82:1 |
| Reverse | 3.51:1 | 3.76:1 |
*Narrow and wide intervals refer to gearboxes with small and large intervals between gear ratios.
Overdrive
- Type - Laycock de Normanville, model J
- Application - As an additional equipment on the G-type gearbox
Lubrication
Type and volume - See. "Lubricants, fluids and volumes"
Tightening torques for threaded connections
G and N gearboxes - Nm
- Clutch housing to gearbox - 55-65
- Oil filler and drain plugs - 23-32
- Overdrive rear housing to overdrive assembly - 13-19
- Overdrive unit to intermediate flange of gearbox - 7-11
Guide sleeve of the thrust bearing to the gearbox:
- Type G - 16-21
- Type N - 9-11
- Reverse light switch - 1-2
- Gearbox cross beam to the bottom - 40-50
- Fastening the gearbox to the crossmember - 70-90
- Gearbox to engine - 30-40
Gearbox MT75 - Nm
- Oil filler and drain plugs - 35
- Driven shaft flange lock nut - 200
- Guide bushing of thrust bearing to gearbox - 160
- Reverse light switch - 12
- Gearbox cross beam to the bottom - 50
- Fastening the gearbox support to the crossmember - 84
- Fastening the gearbox support to the gearbox itself - 50
- Gearbox to engine - 35