With the aid of an accomplice slide the
whole tank toward the back of the car tilting the rear of the
tank (part facing you) slightly downward as you do so. Keep
an eye on the wiring as you do this as it has a habit of snagging
up on the tank as it moves backward. Note there will be some
resistance as you pull it out as it has been sat on a rubberised
base all its life and is a bit reluctant to just slide outta
there.
You should soon have moved it forward enough
to see the top of the pumps access plate known as the Evaporative
Flange (EF) and the tank will now be resting on your makeshift
hard board flooring.
Release (using pliers if that's all you
have) the two clips from the small section of hose that connects
the EF to the breather tube in the middle of the tank, then
slide the rubber tube off the EF. Using the correct tool or
a blunt chisel and rubber mallet tap the lock ring anti clockwise
to release it. Mark the position of the EF in relation to
the tank and lift the lock ring and EF from the tank. Looking
inside the tank, reach down and remove the pump and its mounting
from the tank bottom and lift it high enough to undo the worm
drive clip (jubilee clip) from the internal feed hose and
remove the pump complete with the rectangular filter. Cut
the cable tie on the top holding the mount rubber noting its
fitment and orientation and carefully, so as not to loose
it, prize the lock washer off securing the filter. Fit the
mount and filter to the new pump.
The re assembly in the reverse order to
the above make really sure not to trap anything as you push
the tank back in and replace any O-rings that you come across
(one on each feed and return pipes and the seal on the EF).
The pipes under the car just push home and should then feel
firm as the clips friction grip them. That's about it; 3 hours
start to finish including coffee x 3. It should be noted that
it’s the same for the single pump as the twin pumped
XJR although some descriptions of specific parts will vary
slightly. Nearly forgot. Want a laugh? As mention
some Muppet had had a go down here before. the pipe that goes
from the filter (LH rear wheel area) leaves the filter heading
right, it then bends 90 and heads forward then slightly up
before connecting to a pulse damper (plastic hose to you and
me) turning to the right again. Exiting this pulse damper
it turns upward through 90 again heading back toward the rear
of the car. Ok simple enough? What we found was that the last
90 turn had been removed and straightened out to rely on the
plastic tube - sorry Pulse damper - to complete a full 180
in order to provide enough tension to hold the end of the
pipe in the tank thanks to the clip being missing (found the
clip under the tank) As a result; the plastic tube had collapsed
restricting flow. This made the pump work really hard and
that's why bits of it where in the fuel filter. In order to
recover from this we were going to reinstated the bend but
noticed that the plastic part and the end of the tube where
damaged and so grabbed a replacement from the parts department.
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