OPERATING INSTRUCTIONS
26 4
012/16 Diesel, February 1997
PRIMING AND VENTING THE FUEL
SYSTEM AS FITTED ON THE EARLIER 12
& 16 CYLINDER ENGINES.
Loosen the union nut on the fuel feed pipe
from the fuel filter, Fig. 5.
Operate the priming pump by pressing the
rubber button Fig. 6. Continue priming until
air free fuel flows from the union. Re-tighten
the union nut.
Then slacken off the vent plugs located at
the opposite to flywheel end of 'A' and 'B'
bank fuel return rails, Fig. 7 and continue
priming until air free fuel flows. Tighten the
vent plugs.
When priming a fuel system fitted with
changeover fuel filters, undo the left hand
bleed screws 'L' (see Fig. 8). Operate the
priming pump by pressing the rubber button
(see Fig. 6), until air free fuel flows from the
bleed screws. Retighten the left bleed
screws 'L'. Repeat the above operation with
the right hand bleed screws 'R' until all four
filters have been primed with fuel.
Slacken off the vent plugs located at the front
end of both fuel return rails (see Fig. 7) and
continue priming until air free fuel flows.
Retighten the vent plugs.
Key
(Fig. 6 & Fig. 7)
1 Priming pump
2 Strainer
3 Vent plug
Fig. 5
Fig. 6
1
2
Fig. 7
3
Fig. 8
L
L
R
R
