also there is sometimes a small gauze filter inside where the fuel line goes into the Injector pump
some TD42's have it, some dont..............
fuelpumppic2.jpg
Gauze Filter can be found about 20mm under the level of the bolt head.
injpumpfilter7.jpg
it looks like a very small thimble
This "thimble" filter is only about 3-4mm in diameter.
Clean up around the top of the injector pump
Looking straight down from above.
The banjo fitting on the inlet section of the pump is the one that is closest to the front of the engine and has a steel fuel line which runs to it via the gap between the back of the pump and the block. The line that feeds the fitting runs between the pump and the block.
Undo this bolt, and remove it.
remove fuel line - dont loose the copper washers, one on top, one under neath
There should be enough movement in the banjo fitting to push it clear of the hole it feeds beneath the fitting, or you can just work through the hole in the fitting the bolt came out of (harder).
get a small safety pin - ( 25mm long closed) - open it up, straiten it out, and make a small 90* bend on the last 3-5 mm ( so it goes into the hole the bolt came out of)
Now feel down inside the pump, about 15-20mm deep, and try to hook the filter out. It is a stainless gauze filter (approx 3mm deep, 3-4 mm in dia), with a brass ring around the top edge.
being very careful, gently feed safety pin into fuel hole, and see if you can "jag" onto the gauze filter, and lift it out
once you get it out (if you have one) using spray can of degreaser, or compressed air, spray the living shyte out of it to remove all the "gunk"
if you hold it up to the light, and cannot see through it - keep spraying until you do
put it all back together again reversal of pulling it apart
once you have done that, and also replaced the main filter, pump the black knob until you have full fuel pressure
primer pump.JPG
bobs your uncle
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