Technical data

(d) Delivery Valve Operation
The delivery valve functions to deliver the fuel to
the injection pipe after the fuel pressure has
increased sufficiently high and also to prevent
"after-drip" from the nozzle.
When the fuel pressure above the plunger has
decreased after injection, the delivery valve
piston closes the delivery valve seat. At this time
the - compressed fuel remaining in the injection
pipe drips from the nozzle. To prevent this
"after-drip", the delivery valve piston makes a
stroke to draw back the fuel before the
delivery valve reaches the seat, reducing the fuel
pressure in the injection pipe to nearly zero.
(4) Nozzle and Nozzle Holder
Fuel from the fuel injection pump flows through the passage in the body of each nozzle holder
and is injected from the nozzle into the combustion chamber. Fuel overflowing from the nozzle
enters the nozzle holder and returns to the fuel tank through the banjo bolt, banjo and overflow
pipe.
SERVICING
Disassembly
(1) Fuel Filter (Secondary)
Remove the retaining nut.
Remove the O-ring and element.
(2) Fuel Pump
The wholly sealed transistor type fuel pump does not require any inspection and adjustment
except cleaning of the cover and plunger assembly and changing the filter element.
(a) Remove the cover (1) with a 17mm wrench. Remove the cover gasket (2) , magnet (3) and
filter(4) from the pump body.
Remove the cover gasket if damaged. Clean the magnet and cover satisfactorily.
(1) Cover
(2) Cover gasket
(3) Magnet
(4) Filter
(5) Body
(6) Spring retainer
(7) Washer
(8) O-ring
(9) Valve
(10) Plunger spring
(11) Plunger
(12) Plunger tube Removing Plunger
(13) Body
Removing Filter