fuel FORD SIERRA 1992 2.G Routine Manintenance And Servicing User Guide

8Tighten the alternator mounting and
adjustment nuts and bolts in the order shown
(see illustration).
9Where applicable, refit and tension the air
conditioning compressor drivebelt.
10Reconnect the battery negative lead.
11Drivebelt tension should be rechecked
and if necessary adjusted after the engine has
been run for a minimum of ten minutes.
DOHC models
12Three different types of drivebelt
arrangement are used, depending on model
(see illustrations).On models without powersteering, the drivebelt is tensioned by moving
the alternator. On models with power steering,
the power steering pump is also driven by the
coolant pump/alternator drivebelt and an
automatic belt tensioner is fitted (see
illustration).On models with air conditioning,
the drivebelt drives the alternator, coolant
pump, power steering pump and air
conditioning compressor, and an automatic
belt tensioner is fitted.
13On models without power steering, loosen
the alternator mounting and adjustment bolts,
and pivot the alternator towards the cylinder
block. Slip the drivebelt from the pulleys.
14On models with power steering, the
automatic tensioner can be released using a
17 mm socket and a wrench on the boss in
the centre of the pulley. Lever the tensioner
assembly clockwise, slide the belt from the
pulleys, then slowly release the tensioner.
15To fit a new belt on models without
power steering, slide the belt over the pulleys,
then lever the alternator away from the
cylinder block until the correct belt tension is
achieved. Lever the alternator using a plastic
or wooden lever at the pulley end to prevent
damage. It is helpful to partially tighten the
adjustment link bolt before tensioning the
drivebelt. When the correct tension is
achieved, tighten all the bolts.
16To fit a new belt on models with power
steering, lever the tensioner clockwise as
during removal, then slide the belt over the
pulleys, and slowly release the tensioner.
1The battery fitted as original equipment is
“maintenance-free”, and requires nomaintenance apart from having the case kept
clean, and the terminals clean and tight.
2To clean the battery terminals disconnect
them, after having first removed the cover
(later models) - negative earth first. Use a wire
brush or abrasive paper to clean the
terminals. Bad corrosion should be treated
with a solution of bicarbonate of soda, applied
with an old toothbrush. Do not let this solution
get inside the battery.
3Coat the battery terminals with petroleum
jelly or a proprietary anti-corrosive compound
before reconnecting them. Reconnect and
tighten the positive (live) lead first, followed by
the negative (earth) lead. Do not overtighten.
4Keep the top of the battery clean and dry.
Inspect the battery tray for corrosion, and
make good as necessary.
SOHC engines
1The valve clearances must be checked with
the engine cold. On carburettor models
remove the air cleaner.
2Disconnect the HT leads from the spark
plugs and release them from the clips on the
camshaft cover.
3On fuel injection models, unbolt and
remove the bracing strut securing the inlet
manifold to the right-hand side of the cylinder
head.
4Where applicable, unclip any hoses and
wires from the camshaft cover, then unscrew
the securing bolts and remove the camshaft
cover and gaskets. Take care not to lose the
spacer plates which fit under the bolt heads,
where applicable.
23Engine valve clearance
check
22Battery terminal check
Every 12 000 miles or 12 months 1•15
1
21.12b Coolant pump/alternator drivebelt
arrangement - 2.0 litre DOHC engine with
power steering
1 Alternator
2 Automatic belt
tension
3 Coolant pump4 Crankshaft pulley
5 Power steering
pump21.12d Alternator/coolant pump drivebelt
tensioner indicator position -
2.0 litre DOHC engine
Inset shows tensioner at maximum
adjustment
1 Alternator
2 Automatic belt
tensioner
3 Coolant pump4 Air conditioning
compressor
5 Crankshaft pulley
6 Power steering
pump
21.12c Coolant pump/alternator drivebelt
arrangement - 2.0 litre DOHC engine with
power steering and air conditioning
21.12a Coolant pump/alternator drivebelt
arrangement - 2.0 litre DOHC engine
without power steering
1 Alternator
2 Coolant pump3 Crankshaft
pulley
21.8 Alternator mounting tightening
sequence - SOHC engines
Caution: Before carrying out
any work on the vehicle battery,
read through the precautions
given in “Safety first!” at the
beginning of this manual.
It will be easier to turn the
engine by hand if the spark
plugs are removed but take
care not to allow dirt to enter
the spark plug holes.

5Numbering from the front (camshaft
sprocket) end of the engine, the exhaust
valves are 1, 3, 5 and 7, and the inlet valves
are 2, 4, 6 and 8.
6Turn the engine clockwise using a suitable
socket on the crankshaft pulley bolt, until the
exhaust valve of No 1 cylinder (valve No 1) is
fully closed; ie the cam lobe is pointing
vertically upwards (see illustration).
7Insert a feeler blade of the correct thickness
(see Specifications) between the cam follower
and the heel of the No 1 valve cam lobe. The
feeler blade should be a firm sliding fit. If not,
loosen the locknut and adjust the ball-pin
position accordingly by turning the adjusternut, then tighten the locknut (see
illustrations). Allowance must be made for
tightening the locknut, as this tends to
decrease the valve clearance. Recheck the
adjustment after tightening the locknut.
8Repeat the procedure given in paragraphs
6 and 7 for the remaining valves. With the
carburettor/inlet manifold fitted, some diffi-
culty may be experienced when adjusting the
exhaust valve clearances, and a suitable
open-ended spanner bent to 90º will be found
helpful.
9Check the condition of the camshaft cover
gasket, and renew if necessary. Fit the gasket
to the camshaft cover ensuring that the
locating tabs and dovetails are correctly
located (see illustration), then refit the
camshaft cover and tighten the securing bolts
in the order shown (see illustration), ensuring
that the spacer plates are in position under
the bolt heads, where applicable.
10On fuel injection models, refit the inlet
manifold bracing strut.
11Where applicable refit the spark plugs.
Reconnect the HT leads and locate them in
the clips on the camshaft cover.
12Where applicable, refit any wires and
hoses to the clips on the camshaft cover and
on carburettor models, refit the air cleaner.
DOHCand CVH engines
13These engines are fitted with hydraulic
cam followers therefore no adjustment is
necessary.
Chock the front roadwheels and jack the
rear wheels clear of the ground, supporting
the vehicle with axlestands.
Check that with the handbrake released,
the rear wheels are free to rotate and no brake
“bind” is evident. The handbrake lever travel
should be between two and four clicks of the
ratchet. If brake “bind” or excessive lever
travel is evident, check the handbrake cable
routing and check the self-adjuster
mechanism for wear or damage. Refer to
Chapter 10 for full service information. Gain access to the radiator matrix by
removing the surrounding body panels, fan
shrouds, etc. Clean dirt and debris from the
matrix using an air jet or water and a soft
brush. Be careful not to damage the fins or
cut your fingers.
Remove the protecting grille and clean any
leaves, insects etc. from the air conditioner
condenser coil and fins. Be very careful not to
damage the condenser fins: use a soft brush, or
a compressed air jet, along (not across) the fins.
1If applicable, remove the radiator grille
being careful not to damage the condenser
fins.
2Check the refrigerant charge as follows.
The engine should be cold and the ambient
temperature should be between 64°and 77°F
(18°and 25°C).
3Start the engine and allow it to idle.
Observe the refrigerant sight glass(see
illustration)and have an assistant switch on
the air conditioning to fan speed III. A few
bubbles should be seen in the sight glass as
the system starts up, but all bubbles should
disappear within 10 seconds. Persistent
bubbles, or no bubbles at all, mean that the
refrigerant charge is low. Switch off the
26Air conditioner refridgerant
charge check
25Radiator matrix and air
conditioner condenser clean
24Handbrake check
1•16Every 12 000 miles or 12 months
23.6 Cam lobe correctly positioned for
checking valve clearance. Insert feeler
gauge as shown by arrow23.7b Adjusting a valve clearance
26.3 Air conditioning system refrigerant
sight glass (arrowed)
23.9b Camshaft cover bolts (A) and spacer
plates (B)
Tighten bolts in following stages:
Stage 1 Bolts 1 to 6
Stage 2 Bolts 7 and 8
Stage 3 Bolts 9 and 10
Stage 4 Bolts 7 and 8 (again)
23.9a Camshaft cover gasket dovetails
23.7a Using a feeler gauge to check a
valve clearance

CVH carburettor models
7To test the unit the engine must initially be
cold. Disconnect the hot air inlet hose from
the air cleaner spout and observe the position
of the flap which should be fully open to allow
only hot air to enter (see illustration).
8Refit the hose and warm up the engine to
normal operating temperature.
9Disconnect the hot air inlet hose again, and
observe the position of the flap which should
be fully closed to admit only cold air.
10If the flap positions are not as described,
the waxstat is defective and the complete air
cleaner must be renewed as the waxstat is
not available separately.
11On completion of the checks, stop the
engine and reconnect the hot air inlet hose.1The pulse-air filter is located at the front
left-hand side of the engine compartment.
2To renew the element, simply unclip the
filter cover, then lift out the metal gauze, and
withdraw the filter element (see illustration).
3Refitting is a reversal of removal. Ensure
that the holes in the gauze and the filter
element are positioned on the engine side of
the filter housing.
Carburettor models
1Remove the screws from the top of the air
cleaner cover (see illustration).
2Where applicable release the spring clips
around the edge of the cover, then lift or prise
off the cover (see illustration).
3Lift out the air cleaner element. Wipe the
inside of the air cleaner body clean, taking
care not to allow dirt to enter the carburettor
throat. Also clean the inside of the cover.
4Place a new element in position, then refit
the air cleaner cover.
Fuel-injection models
All models except 2.0 litre DOHC
5Disconnect the battery negative lead.
6Depress the locking clip on the airflow
meter wiring plug and disconnect the plug.
Pull on the plug, not the wiring (see
illustration).
7Loosen the securing clip and disconnect
the air inlet hose from the airflow meter.
8Release the four securing clips and lift off
the air cleaner lid with the airflow meter.
9Lift out the old air cleaner element (see
illustration), then wipe the inside of the air
cleaner casing and lid clean.
10Fit the new element with the sealing lip
uppermost.
11Refit the air cleaner lid and secure with
the four clips.
12Reconnect the air inlet hose to the airflow
meter, ensuring that the securing clip is
correctly aligned (see illustration). Reconnect
the wiring plug.
38Air cleaner element renewal
37Pulse air filter element
renewal (1.6 litre CVH)
Every 24 000 miles or 2 years 1•19
1
37.2 Withdrawing the pulse-air filter
element and gauze - 1.6 litre CVH models
38.12 Air intake hose clip correctly aligned38.9 Unclip the lid and remove the air
cleaner element38.6 Disconnecting the airflow meter
wiring plug
38.2 . . . release the spring clips, and lift off
the cover for access to the element38.1 Remove the air cleaner cover
screws . . .
36.7 Air cleaner flap valve operation - CVH models
A Flap fully open to admit hot air
B Flap fully closed to admit cold air
1 Air inlet spout
2 Hot air inlet hose3 Flap valve
4 Link arm
5 Waxstat
6 Air cleaner body

13Reconnect the battery negative lead.
2.0 litre DOHC models
14Disconnect the battery negative lead.
15Disconnect the wiring plug from the idle
speed control valve at the front of the plenum
chamber.
16Loosen the clamp, and detach the air inlet
hose from the air inlet tubing.
17Unscrew the securing nut, and release the
air inlet tube from the bracket on the engine
compartment front panel (see illustration).
18Release the air cleaner lid securing clips,
then lift away the air inlet tube, plenum
chamber and air cleaner lid as an assembly,
disconnecting the breather hose from the air
inlet tube.
19Lift out the air cleaner element (see
illustration), then wipe the inside of the air
cleaner lid and casing clean.
20Fit the new element with the sealing lip
uppermost.
21Further refitting is a reversal of removal.
1Before disturbing any part of the ignition
system, disconnect the battery negative lead.
2Identify and clearly mark all HT leads before
disconnecting them from the spark plugs.
3Refer to the appropriate Section in Chapter
5 and, where applicable, remove the
distributor cap and rotor arm.
4Clean the HT leads and distributor cap with
a dry cloth. Scrape any corrosion or otherdeposits from the connectors and terminals.
Also clean the coil tower.
5Renew the HT leads if they are cracked,
burnt or otherwise damaged. If a multi-meter
is available, measure the resistance of the
leads. The desired value is given in the
Specifications of Chapter 5.
6Renew the distributor cap if it is cracked or
badly burnt inside, or if there is evidence of
“tracking” (black lines marking the path of HT
leakage). If there is a carbon brush at the
centre of the cap, make sure that it moves
freely, and is not excessively worn (see
illustration).
7Clean the metal track of the rotor arm with
fine abrasive paper. Renew the arm if it is
cracked or badly burnt.
8Refit the rotor arm and distributor cap.
9Reconnect the HT leads to the spark plugs
and coil.
10Reconnect the battery and run the engine.
Note: A brake band torque wrench - Ford tool
No 17-005, or a conventional torque wrench
and a splined socket of suitable size to fit the
square section head of the adjuster screw(s)
will be required for this operation.
1For improved access, apply the handbrake,
then jack up the front of the vehicle and
support on axle stands (see “Jacking and
vehicle support”).2The brake band adjuster screw(s) is/are
situated on the left-hand side of the
transmission housing, forward of the
kickdown lever. Note that the C3 type
transmission has a single adjuster screw for
adjustment of the front brake band, whereas
the A4LD type transmission has two adjuster
screws for adjustment of the front and
intermediate brake bands(see illustration).
3Disconnect the kickdown cable from the
kickdown lever on the transmission housing.
4Loosen the locknut on the front brake band
adjuster screw, and back off the adjuster
screw several turns.
5Using the Ford special tool or a suitable
equivalent, tighten the adjuster screw to the
specified torque, then back off the screw two
complete turns, and tighten the locknut.
Ensure that the adjuster screw does not turn
as the locknut is tightened.
6Repeat the procedure given in paragraphs
4 and 5 for the remaining adjuster screw on
A4LD type transmissions, but on all models
where the part number on the transmission
identification tag starts with “88”(see
illustration)and additionally on all 1.8 CVH
engine models, the adjuster screw should be
backed off two and a half turns after
tightening to the specified torque. On all other
models, the adjuster screw should be backed
off two turns.
7Reconnect the kickdown cable, and lower
the vehicle to the ground on completion.
2.0 litre SOHC fuel injection
models
1The fuel filter is located on the left-hand
side of the engine compartment(see
illustration).
2Disconnect the battery negative lead.
3Position a suitable container beneath the
filter, then slowly loosen the fuel inlet union to
relieve the pressure in the fuel lines.
4Disconnect the fuel inlet and outlet unions.
Be prepared for petrol spillage. If necessary,
identify the fuel line unions for use when
refitting.
5Loosen the filter clamp screw, and
withdraw the filter from the clamp. Drain the
petrol from the filter into the container.
Dispose of the filter carefully.
41Fuel filter renewal
40Automatic transmission
brake band adjustment
39Ignition system component
check
1•20Every 24 000 miles or 2 years
38.17 Air intake tube securing nut
(arrowed)
39.6 Bosch distributor cap showing HT
segments (A) and carbon brush (B)40.6 Transmission identification tag with
part number starting with “88”
40.2 Brake band adjustment - A4LD type
transmission
A Adjuster screws
B LocknutsC Kickdown lever
38.19 Lifting out the air cleaner element
Caution: Refer to the
precautions in Chapter 4, Part
B, Section 1 before proceeding.

6Fit the new filter, ensuring that the arrows on
the filter body point in the direction of fuel flow.
7Tighten the clamp screw, and reconnect
the fuel inlet and outlet unions. Ensure that the
unions are correctly connected.
8Reconnect the battery negative lead, and
check the fuel line unions for leaks,
pressurising the system by switching the
ignition on and off several times.
All models except 2.0 litre SOHC
9Proceed as described for the 2.0 litre SOHCmodels, noting the following points.
10The fuel filter is located under the rear of
the vehicle, above the driveshaft (see
illustration). For access to the filter, chock
the front wheels, then jack up the rear of the
vehicle and support it on axle stands.
11To remove the filter, the mounting bracket
must first be removed from the floor, after
unscrewing the securing bolt. The filter can
then be removed from the bracket after
unscrewing the clamp bolt.On carburettor model SOHC engines,
renew the crankcase ventilation vent valve by
pulling it from the oil separator and loosening
the hose clip (see illustration). Fit the new
valve, tighten the clip, and insert it into the oil
separator grommet.
42Crankcase ventilation vent
valve renewal
If in doubt as to the condition of any of the
brake system seals and hoses, then renew
defective items whilst referring to the relevant
Sections of Chapter 10.
1An assistant and bleeding equipment will
be needed. A considerable quantity of
hydraulic fluid will be required - probably
about 2 litres (nearly half a gallon).
2Slacken the front wheel nuts. Raise and
support the front of the vehicle and remove
the front wheels.
3Remove the hydraulic fluid reservoir cap.
4Open both front bleed screws one full turn.
Attach one bleed tube to each screw, placing
the free end of each tube in a jar.
5Pump the brake pedal to expel fluid from
the bleed screws. Pause after each upstroke
to allow the master cylinder to refill.
6When air emerges from both bleed screws,
stop pumping. Detach the left-hand caliper
without disconnecting it and remove the
inboard brake pad.
7Depress the caliper piston, using a
purpose-made tool or a blunt item such as a
tyre lever, to force more fluid out of the
caliper. Hold the piston depressed and have
the assistant pump the pedal until air emerges
from the bleed screw again.8Tighten the bleed screw on the left-hand
caliper. Loosely refit the caliper and pad so
that the piston is not accidentally ejected.
9Repeat the purging operation on the right-
hand caliper, but do not refit it or tighten the
bleed screw yet.
10Fill the reservoir with fresh hydraulic fluid.
Position the bleed jar for the right-hand
caliper at least 300 mm (1 foot) above the
level of the bleed screw.
11Have the assistant pump the brake pedal
until fluid free of bubbles emerges from the
bleed screw. Tighten the bleed screw at the
end of a downstroke.
12Place a piece of wood in the caliper jaws
to limit piston travel. Keep your fingers clear
of the piston. Have the assistant depress the
brake pedal gentlyin order to move the
caliper piston out.
13With the pedal held depressed, slacken
the bleed screw on the right-hand caliper and
again depress the piston. Tighten the bleed
screw when the piston is retracted. The pedal
can now be released.
14Disconnect the bleed tube. Refit the right-
hand brake pad and caliper.
15Remove the left-hand caliper and inboard
pad again. Carry out the operations described
in paragraphs 10 to 14 on the left-hand
caliper.
16Bleed the rear brakes (Chapter 10).
17Refit the front wheels, lower the vehicle
and tighten the wheel nuts.
18Pump the brake pedal to bring the pads
up to the discs, then make a final check of the
hydraulic fluid level. Top-up and refit the
reservoir cap.Camshaft drivebelt renewal is
recommended as a precautionary measure for
SOHC engines but is compulsory for CVH
engines. Refer to Chapter 2 for the
appropriate renewal procedure.
1Disconnect the battery negative lead.
2It is preferable to drain the cooling system
with the engine cold. If this is not possible,
take precautions against scalding when
removing the expansion tank cap. Place a
thick rag over the cap and slacken the cap a
little to release any pressure. When all
pressure has been released, carry on
unscrewing the cap and remove it.
3Early models have no radiator drain plug, so
the radiator must be drained by detaching the
bottom coolant hose from the outlet on the
right-hand side of the radiator. Later SOHC
models have a drain plug located in the base
of the left-hand radiator end tank, whilst all
CVH models have a drain plug in the
right-hand radiator end tank and DOHC
models have a plug to the bottom right-hand
side of the radiator.
46Engine coolant renewal
45Camshaft drivebelt renewal
44Brake hydraulic fluid renewal
43Brake hydraulic system seal
and hose renewal
Every 36 000 miles or 3 years 1•21
1
42.1 Removing the crankcase vent valve
from the oil separator41.10 Fuel filter location (arrowed) under
rear of vehicle41.1 Fuel filter location - outlet union
arrowed
Caution: Before proceeding,
note the precautions given in
Chapter 3, Section 1.
Every 36 000 miles (60 000 km) or 3 years