Cardan shaft
The propeller shaft of Ford Scorpio cars consists of two parts.
The front part of the shaft is balanced as a single unit after installation. If the shaft parts are disconnected during their assembly, care should be taken to maintain the mutual arrangement of the alignment marks (the depressions made with a center punch on the shaft, as well as the wide line on the crosspiece), which should lie on the same line. The crosspieces of the joints have needle bearings, sealed to protect against contamination. The cross-shaped joints form a non-separable unit with the shaft, which, if necessary, should be replaced entirely.
Depending on the vehicle modification, the propeller shaft is connected to the gearbox via an elastic coupling or a cardan joint.
Rear axle
The rear axle has a rigid suspension, at the front on the rear axle beam, and at the rear through metal-rubber elements to the body. The main gear is hypoid.
The main transmission gear rotates in two tapered bearings with an initial tension realized by means of a deformable spacer sleeve.
The adjustment of the engagement of the main gear teeth is carried out by selecting the thickness of the linings between the internal bearing of the gear and the main gear gear.
Adjustment of the inter-tooth clearance of the main gear, as well as the initial tension of the differential bearings, is carried out using two adjusting flanges with protrusions.
Some models are equipped with a viscous clutch differential, which operates due to the shear force generated between the viscous clutch discs when the angular velocity of one wheel differs from the angular velocity of the other wheel.
Adjustment data
| Moment of resistance of rotation of the main gear pinion bridge 7.5" and 7": | |
| – until 1986 | 1.6 – 2.1 Nm |
| - since 1986 | 1.8 – 2.4 Nm |
| Intertooth clearance of the main gear: | |
| - for control | 0.8 – 0.15 mm |
| - for adjustment | 0.05 mm |
Thickness of differential axle gear adjusting shims:
- 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;
- 1.86–1.92 mm
- 1.93–1.99 mm.
Lubrication
| Amount of oil: | |
| - bridge 7.5" | 1.3 dm³ |
| - bridge 7" | 0.9 dm³ |
| Type | gearbox oil SAE 90 Ford SQM 2 C 9003 AA |
Tightening moments
| Cardan shaft: | |
| – flange of the rear joint of the propeller shaft to the flange of the main gear pinion | 57 – 67 Nm |
| - intermediate bearing housing to the body | 18 – 23 Nm |
| Rear axle: | |
| - cover to the crankcase | 45 – 60 Nm |
| - housing to rear axle beam | 70 – 90 Nm |
| – nut for fastening the flange to the main gear pinion | 100 – 130 Nm |
| – fastening the driven gear of the main transmission to the differential box | 75 – 86 Nm |
| - plate fixing the differential bearing clearance adjustment flange | 19 – 25 Nm |
| Drive axles: | |
| - rear wheel hub nut | 250 – 290 Nm |
(The original source of the publication is on the website: www.fordbook.ru)