
Fuel system
Air cleaner and temperature regulator
Removal and refitting.
To remove the air cleaner, release
spring retainers 14 (Fig. 2-76) and undo nut 7 securing air clean-
er cover 8. Remove the cover and lift out filter element 10.
Undo the nuts holding housing 13 to the carburettor.
Disconnect hose 2, then remove the air cleaner and temperature
regulator 5.
Loosen clamp bolt 6 and remove temperature regulator 5
complete with cold air intake 4.
When refitting the air cleaner, position the arrow on the filter
cover as shown in Fig. 2-77 in order to reduce intake air noise.
Fuel tank
Removal and refitting.
Before removing fuel tank 1 (Fig.2-
78), disconnect the battery earth lead.
Undo cap 5 of filler pipe 4 and remove as much petrol as pos-
sible.
Remove the rear seat, undo screws holding the right-hand
and left-hand wheel arch liner, remove the liners.
Unbolt and remove the cover in the floor to expose the fuel
tank. Disconnect hoses 9 and wiring from fuel level sender 8, fol-
lowed by hoses 2 from the fuel vapour separator.
Undo the retaining bolts and withdraw the petrol tank.
The fuel tank refitting is a reversal of removal.
Cleaning and inspection.
Remove the fuel level sender.
Clean the tank with petrol to remove any contaminants or sedi-
ments. Wash the tank with a jet of hot water and steam out any
petrol residuals.
Thoroughly examine the fuel tank welding seam for leaks. If
leakage is evident, solder the fuel tank.
WARNING. Before soldering, check to see the fuel tank
is thoroughly cleaned and steam-treated and there are no
fuel vapours which can ignite and explode during soldering.
Fuel pump
Refer to Fig.2-79.
Fuel pump inspection.
Insufficient fuel flow to the carburet-
tor can be caused by a faulty fuel pump, clogged or damaged fuel
lines or fuel filter.
To find the cause of failure, disconnect the hose from supply
manifold 1 and using fuel priming lever 8, check fuel delivery. If
there is no fuel, disconnect the hose from intake manifold 4 and
check the manifold for vacuum. In case of vacuum, the fuel lines
are damaged, if not - the fuel pump is faulty.
The fuel pump can be tested on a stand. By rotating the drive
shaft at 2000±40 rpm, check the fuel delivery by the pump to be
at least 54 litre/hour at 20±5
°
ë, while the supply pressure at
«zero» fuel delivery must be 0.02-0.03 åP‡ (0.21-0.30 kg/cm
2
).
When found defective, dismantle the fuel pump and examine all
its components.
Dismantling, cleaning and inspection.
To dismantle,
unbolt cover 5, remove the cover and fuel pump filter 2. Next
undo the screws holding the housing to the lower cover, separate
them, withdraw the diaphragm unit and spring. Wash all compo-
nents in petrol and blow dry with compressed air.
Examine the state of components. The pump springs must
be undamaged. Check the valves are not sticking. The
diaphragms must have no fractures, cracks or hard spots.
43
Fig.2-76. Air cleaner and temperature regulator:
1 - gasket; 2 - corrugated hose; 3 - air temperature control flap handle; 4 - cold
air intake; 5 - temperature regulator; 6 - clamp bolt; 7 - air cleaner cover secur-
ing nut; 8 - air cleaner cover; 9 - air cleaner cover gasket; 10 - filter element;
11 - filter cover mounting bracket; 12 - emission discharge pipe; 13 - air filter
housing; 14 - spring retainer; 15 - warm air intake from exhaust manifold
Fig.2-77. Refitting the air cleaner cover
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