Cardan shaft
The cardan shaft of Ford Scorpio cars consists of two parts.
The front part of the shaft after installation is balanced as a whole. In case of disconnection of the shaft parts during their assembly, attention should be paid to maintaining the relative position of the installation marks (recesses made with a center punch on the shaft, as well as a wide line on the cross), which must lie on the same line. The pivot crosses have needle bearings sealed to protect against contamination. The cruciform hinges form a non-separable unit with the shaft, which, if necessary, should be replaced as a whole.
Depending on the modification of the car, the cardan shaft is connected to the gearbox through an elastic coupling or cardan joint.
Rear axle
The rear axle has a rigid suspension, in front on the rear axle beam, and in the rear through metal-rubber elements to the body. The main gear is hypoid.
The final drive gear rotates in two tapered bearings with an initial tightness, implemented using a deformable spacer sleeve.
Adjustment of the clutch of the teeth of the main gear is made by selecting the thickness of the gaskets between the inner bearing of the gear and the gear of the main gear.
Adjustment of the tooth gap of the main gear, as well as the initial tightness of the differential bearings, is carried out using two adjusting flanges with projections.
On some models, a viscous clutch differential is installed, which works due to the shear force that occurs between the viscous clutch discs when the angular velocity of one wheel differs from the angular velocity of the other wheel.
Adjustment data
| Torque of main gear rotation axle 7.5" and 7": | |
| – until 1986 | 1.6 - 2.1 Nm |
| – since 1986 | 1.8 - 2.4 Nm |
| Intertooth gap of the main gear: | |
| - for control | 0.8 - 0.15 mm |
| - for adjustment | 0.05 mm |
The thickness of the shims of the side gears of the differential:
- 1.02–1.08 mm;
- 1.09–1.15 mm;
- 1.16–1.22 mm;
- 1.23–1.29 mm;
- 1.30–1.36 mm;
- 1.37–1.43 mm;
- 1.44–1.50 mm;
- 1.51–1.57 mm;
- 1.58–1.64 mm;
- 1.65–1.71 mm;
- 1.72–1.78 mm;
- 1.79–1.85 mm;
- 1.72–1.78 mm;
- 1.86-1.92mm
- 1.93–1.99 mm.
Lubricant
| Oil quantity: | |
| – bridge 7.5" | 1.3 dm3 |
| – bridge 7" | 0.9 dm3 |
| Type | gearbox oil SAE 90 Ford SQM 2 C 9003 AA |
Tightening torques
| Cardan shaft: | |
| - the flange of the rear joint of the cardan shaft to the flange of the final drive gear | 57 - 67 Nm |
| – the case of the intermediate bearing to a body | 18 - 23 Nm |
| Rear axle: | |
| - cover to crankcase | 45 – 60 Nm |
| - crankcase to rear axle beam | 70 – 90 Nm |
| – a nut of fastening of a flange to a gear wheel of the main transfer | 100 – 130 Nm |
| – fastening of a conducted gear wheel of the main transfer to a differential box | 75 - 86 Nm |
| – a plate fixing the flange for adjusting the clearance of the differential bearing | 19 – 25 Nm |
| Drive axles: | |
| - rear wheel hub nut | 250 - 290 Nm |
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