Designation
- Engine 1.3 l until 1982 - F10 (4-speed)
- Engine 1.3 l since 1983 - F10.4 (4-speed) or F10.5 (5-speed)
- 1.6 l and 1.8 l - F16 (4-speed), F16.4 (4-speed) or F16.5 (5-speed)
Gear ratios
(typical) | F10 | F10.4W/5W | F16 | F16.4W/5W | F16.5C |
1st gear | 3,64:1 | 3,55:1 | 3,55:1 | 3,42:1 | 3,42:1 |
2nd gear | 2,21:1 | 1,96:1 | 2,16:1 | 1,95:1 | 2,16:1 |
3rd gear | 1,43:1 | 1,30:1 | 1,37:1 | 1,28:1 | 1,48:1 |
4th gear | 0,97:1 | 0,89:1 | 0,97:1 | 0,89:1 | 1,12:1 |
5th gear (where applicable) | - | 0,71:1 | - | 0,71:1 | 0,89:1 |
Reverse gear | 3,18:1 | 3,18:1 | 3,33:1 | 3,33:1 | 3,33:1 |
main gear | 4,18:1 | 4,29:1 | 3,74:1 | 3,74:1 | 3,94:1 |
Speedometer drive | 2:1 | 2:1 | 2:1 | 2:1 | 2:1 |
Oil type/specification — Gear oil, SAE 80EP viscosity or GM gear oil 90 188 629 (Duckhams Hypoid 80 or Hypoid 75W/90S)
Transmission housing capacity
- F10 and F10.4 - 1.7 l (approximately)
- F10.5 - 1.8 l (approximately)
- F16 and F16.4 - 2.0 l (approximately)
- F16.5 - 2.1 l (approximately)
Torque (Nm)
- Bolts securing the flywheel housing to the engine - 75
- End cap bolts - 22
- Shift cover bolts - 15
- End cap screw (F10, F10.4, F16, F16.4) — 50
- End cap screw (F10.5, F16.5) — 30
- Differential cover bolts - 30
- Main drive driven gear bolts - 85
- Attaching the exhaust system bracket to the gearbox housing - 60
- Bolts securing the support bracket to the gearbox housing - 30
- Bolts securing the support bracket to the machine body - 40
- Reversing light switch - 20
- Screws (with hole in head) 5th gear fork pivot pin - 22
- Screws (with hole in head) dogs 5th gear - 9
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