tyre pressure FORD SIERRA 1985 1.G Suspension And Steering Workshop Manual

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):FrontRear
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 settingsNmlbf ft
Roadwheel nuts
Wheelnuts:
Saloon, Hatchback and Estate models (steel and alloy wheels) . . . .70 to 10052 to 74
P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 to 9063 to 66
Hub nuts:
Saloon, Hatchback and Estate models . . . . . . . . . . . . . . . . . . . . . . .310 to 350229 to 258
P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .390 to 450288 to 332
Front suspension
Strut upper mounting nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 to 5230 to 38
Hub carrier-to-strut pinch-bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77 to 9257 to 68
Crossmember-to-underbody bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 to 9052 to 66
Engine mounting-to-crossmember nut:
Saloon, Hatchback and Estate models . . . . . . . . . . . . . . . . . . . . . . .50 to 7037 to 52
P100 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 to 5830 to 43
Anti-roll bar-to-lower arm nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 to 11052 to 81
Anti-roll bar U-clamp-to-underbody bolts . . . . . . . . . . . . . . . . . . . . . . .55 to 7041 to 52
Lower arm-to-hub carrier balljoint nut . . . . . . . . . . . . . . . . . . . . . . . . . .65 to 8548 to 63
Lower arm inner pivot bolt:
Stage 1 (“clamping”torque) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4533
Loosen fully, then Stage 2 (“snug” torque) . . . . . . . . . . . . . . . . . . . . .1511
Stage 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tighten through a further 90º
Rear suspension
Saloon, Hatchback and Estate models:
Lower arm-to-crossmember pivot bolts . . . . . . . . . . . . . . . . . . . . . . .80 to 9559 to 70
Front guide plate-to-underbody bolts . . . . . . . . . . . . . . . . . . . . . . . .41 to 5130 to 38
Front guide plate-to-crossmember bolt . . . . . . . . . . . . . . . . . . . . . . .10074
Suspension/final drive unit rear mounting-to-underbody bolts (gold
coloured) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6044
Suspension/final drive unit rear mounting-to-final drive unit rear cover
bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 to 5030 to 37
Anti-roll bar-to-underbody bracket bolts . . . . . . . . . . . . . . . . . . . . . .20 to 2515 to 18
Hub carrier/brake backplate-to-lower arm bolts*:
Type X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 to 6438 to 47
Type Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80 to 10059 to 74
Hub nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250 to 290185 to 214
*See Section 15
11•2Suspension and steering

4Extract the split pin and unscrew the
castellated nut (see illustration).
5Using a balljoint separator tool, release the
tie-rod end from the hub carrier (see
illustration).
6Unscrew the tie-rod end from the tie-rod,
noting the number of turns necessary to
remove it.
Refitting
7Refitting is a reversal of removal, bearing in
mind the following points.
8Screw the tie-rod end onto the tie-rod the
number of turns noted during removal.
9Tighten the nuts to the specified torque,
and fit a new split pin to the castellated nut.
10On P100 models, align the previously
made marks on the roadwheel and wheel
stud.
11On completion, check and if necessary
adjust the front wheel alignment.
1Front wheel alignment is defined by
camber, castor steering axis inclination and
toe setting. The first three factors are
determined in production; only toe can be
adjusted in service. Incorrect toe will cause
rapid tyre wear.
2Toe is defined as the amount by which the
distance between the front wheels, measured
at hub height, differs from the front edges tothe rear edges. If the distance between the
front edges is less than that at the rear, the
wheels are said to toe-in; the opposite case is
known as toe-out.
3To measure toe, it will be necessary to
obtain or make a tracking gauge. These are
available in motor accessory shops, or one
can be made from a length of rigid pipe or bar
with some kind of threaded adjustment facility
at one end. Many tyre specialists will also
check toe free, or for a nominal sum.
4Before measuring toe, check that all
steering and suspension components are
undamaged and that tyre pressures are
correct. The vehicle must be at approximately
kerb weight, with the spare wheel and jack in
their normal positions and any abnormal loads
removed.
5Park the vehicle on level ground and
bounce it a few times to settle the suspension.
6Use the tracking gauge to measure the
distance between the inside faces of the front
wheel rims, at hub height, at the rear of the
front wheels. Record this distance; call it
measurement “Y” (see illustration).7Push the vehicle forwards or backwards so
that the wheels rotate exactly 180º (half a
turn). Measure the distance between the front
wheel rims again, this time at the front of the
wheels. Record this distance; call it
measurement “X”.
8Subtract measurement “X” from
measurement “Y”. If the answer is positive it is
the amount of toe-in; if negative it is the
amount of toe-out. Permissible values are
given in the Specifications.
9If adjustment is necessary loosen the
tie-rod end locknuts and the outer bellows
clips, then rotate each tie-rod by equal
amounts until the setting is correct. Hold the
tie-rod ends in their horizontal position with a
spanner while making the adjustment.
10Tighten the locknuts and outer bellows
clips.
11Provided the tie-rods have been adjusted
by equal amounts the steering wheel should
be central when moving straight-ahead. The
amount of visible thread on each tie-rod
should also be equal. If necessary refer to
Section 23.
34Front wheel alignment
- checking and adjusting
Suspension and steering 11•19
11
34.6 Front wheel alignment
A CamberB CastorC Toe setting
For X and Y, see text
33.5 Using a balljoint separator tool to
release the tie-rod end from the hub
carrier
33.4 Extracting the split pin from the tie-
rod balljoint castellated nut