Ford Sierra Manual

Specifications
Suspension and steering / Specifications


Front suspension
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Independent by MacPherson struts with coil springs and integral
telescopic shock absorbers. Anti-roll bar fitted to all models Rear suspension
Type:
Saloon, Hatchback and Estate models . . . . . . . . . . . . . . . . . . . . . . . Independent by semi-trailing arms and coil springs with telescopic shock absorbers mounted behind coil springs on Saloon and Hatchback models but concentric with coil springs on Estate models.

Self-levelling rear shock absorbers on certain Estate models. Anti-roll bar fitted to certain models P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Live beam axle with leaf springs and telescopic shock absorbers
Steering
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rack-and-pinion steering gear linked to collapsible steering column by
flexible coupling and universal joint. Power steering available on certain models
Front wheel alignment*
Production toe-setting:
Saloon, Hatchback and Estate models . . . . . . . . . . . . . . . . . . . . . . . 2.0 mm (0.08 in) 1.0 mm (0.04 in) toe-in P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 mm (0.08 in) 2.0 mm (0.08 in) toe-in Service tolerance before adjustment is required . . . . . . . . . . . . . . . . . . 0.5 mm (0.02 in) toe-out to 4.5 mm (0.18 in) toe-in *Toe-setting figures are quoted for vehicle at kerb weight with 3.0 litres (0.66 gallons) of fuel in tank Wheels
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pressed steel or alloy Size:
Saloon, Hatchback and Estate models: Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 x 4.50 in, 13 x 5.50 in, or 14 x 5.50 in Alloy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 x 5.50 in P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 x 5.50 in Tyre sizes
Note: Manufacturers often modify tyre sizes and pressure recommendations. The following is intended as a guide only. Refer to your vehicle handbook or a Ford dealer for the latest recommendations Saloon and Hatchback models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 R 13H, 165 R 135, 165 R 13T, 185/70 R 13H, 185/70 R 135, 185/70 R13T, 195/60 R 14H, 195/60 VR 14 or 195/65 R 14T Estate models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 R 13H, 175 R 135,175 R 13T, 195/70 R 13H, 195/65 R 14T,
195/60 R 14H or 195/60 VR 14 P100 models 185R 14 8PR Tyre pressures (cold): lbf/in2 (bar): Front Rear All Saloon, Hatchback and Estate models with normal load* . . . . . . . 26 (1.8) 26 (1.8)
All Saloon and Hatchback models with full load . . . . . . . . . . . . . . . . 29 (2.0) 36 (2.5)
Estate models with full load: 175 R 13H, 175 R 135,175 R 13T, 195/70 R 13H and 195/65 R14T . 29 (2.0) 48 (2.8) 195/60 R 14H and 195/60 VR 14 . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (2.0) 36 (2.5)
P100 models with light load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 (1.8) 36 (2.5) P100 models with full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 (3.5) 65 (4.5) *Normal load is defined as up to three passengers (or equivalent). For sustained high speeds add 1.5 lbf/in2 (0.1 bar) for every 6 mph (10 km/h) over 100 mph (160 km/h)
A light load is defined as one passenger plus up to 100 kg (220 lb) payload Torque wrench settings Nm lbf ft Roadwheel nuts
Wheelnuts:
Saloon, Hatchback and Estate models (steel and alloy wheels) . . . . 70 to 100 52 to 74
P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 to 90 63 to 66 Hub nuts:
Saloon, Hatchback and Estate models . . . . . . . . . . . . . . . . . . . . . . . 310 to 350 229 to 258
P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390 to 450 288 to 332 Front suspension
Strut upper mounting nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 to 52 30 to 38 Hub carrier-to-strut pinch-bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 to 92 57 to 68 Crossmember-to-underbody bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 to 90 52 to 66 Engine mounting-to-crossmember nut: Saloon, Hatchback and Estate models . . . . . . . . . . . . . . . . . . . . . . . 50 to 70 37 to 52
P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 to 58 30 to 43 Anti-roll bar-to-lower arm nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 to 110 52 to 81 Anti-roll bar U-clamp-to-underbody bolts . . . . . . . . . . . . . . . . . . . . . . . 55 to 70 41 to 52
Lower arm-to-hub carrier balljoint nut . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to 85 48 to 63 Lower arm inner pivot bolt: Stage 1 (clampingtorque) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 33
Loosen fully, then Stage 2 (snug torque) . . . . . . . . . . . . . . . . . . . . . 15 11
Stage 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten through a further 90º Rear suspension
Saloon, Hatchback and Estate models: Lower arm-to-crossmember pivot bolts . . . . . . . . . . . . . . . . . . . . . . . 80 to 95 59 to 70
Front guide plate-to-underbody bolts . . . . . . . . . . . . . . . . . . . . . . . . 41 to 51 30 to 38
Front guide plate-to-crossmember bolt . . . . . . . . . . . . . . . . . . . . . . . 100 74
Suspension/final drive unit rear mounting-to-underbody bolts (gold coloured) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 44 Suspension/final drive unit rear mounting-to-final drive unit rear cover bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 to 50 30 to 37 Anti-roll bar-to-underbody bracket bolts . . . . . . . . . . . . . . . . . . . . . . 20 to 25 15 to 18
Hub carrier/brake backplate-to-lower arm bolts*: Type X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 to 64 38 to 47 Type Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 to 100 59 to 74 Hub nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 to 290 185 to 214 *See Section 15
Torque wrench settings (continued) Nm lbf ft P100 models:
Shock absorber-to-chassis crossmember bolt . . . . . . . . . . . . . . . . . . . 60 to 70 44 to 52
Leaf spring-to-front bracket bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 to 196 116 to 145 Leaf spring-to-spring shackle bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 to 196 116 to 145 Spring shackle-to-underbody bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 to 85 59 to 63 Axle-to-leaf spring U-bolt nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 to 58 29 to 43 Manual steering
Steering gear-to-crossmember bolts: Stage 1 (clamping torque) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 33
Loosen fully, then Stage 2 (snug torque) . . . . . . . . . . . . . . . . . . . . . 15 11
Stage 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten through a further 90º Steering column adjuster through-bolt . . . . . . . . . . . . . . . . . . . . . . . . . . 6 to 8 4 to 6
Tie-rod end locknut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 to 68 42 to 50 Tie-rod end-to-hub carrier nut* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 32 15 to 24 Tie-rod-to-steering rack balljoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 to 88 53 to 65 Steering wheel nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 to 55 33 to 41 Intermediate shaft-to-inner column clamp bolt . . . . . . . . . . . . . . . . . . . 20 to 25 15 to 18
Flexible coupling-to-steering gear clamp nut . . . . . . . . . . . . . . . . . . . . . 24 to 26 17 to 19
Column mounting pinch-bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 to 55 33 to 41 Pinion retaining nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 to 100 52 to 74 Slipper plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 5 3 to 4 *Tighten nut to specified torque and then tighten to next available split pin hole
Tighten nut to specified torque and then loosen off 60º to 70º Power steering (where different to manual steering) Tie-rod to steering rack balljoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 to 77 52 to 57 Flexible coupling-to-steering gear clamp bolt . . . . . . . . . . . . . . . . . . . . 16 to 20 12 to 15
Intermediate shaft-to-inner column clamp bolt . . . . . . . . . . . . . . . . . . . 16 to 20 12 to 15
Pinion locknut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 to 47 27 to 35 Slipper plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 to 4 2 to 3 Pump rear support bar nut and bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 to 51 30 to 38 Pump mounting bracket-to-engine bolts . . . . . . . . . . . . . . . . . . . . . . . . 52 to 64 38 to 47
Pump pulley bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 to 12 7 to 9 Fluid hose-to-pinion housing bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 to 26 15 to 19 Fluid pressure hose-to-pump union . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 to 31 19 to 23 Fluid return hose-to-pump union . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 to 20 12 to 15


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