td42 injector pump timing

Submitted: Tuesday, Jan 24, 2006 at 21:54
ThreadID: 30076 Views:15400 Replies:4 FollowUps:1
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Just checking/confirming my injector pump timing on my Nissan Patrol TD42 and after having taken the injector pump front plate off to expose both injector pump sprocket and the crankshaft sprocket making sure it is on TDC piston 1 have found a somewhat confusing timing position.The marks on the pump sprocket appear to be as best as I can describe it ( letter Zs).I say plural as there are 2x ( Zs) both of which are a tooth apart.The crankshaft sprocket having only one Z is aligned up with the bottom of the two (looking front on) of the pump sprocket.Confusing is this right?

regards andy
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Reply By: 120scruiser - Tuesday, Jan 24, 2006 at 21:56

Tuesday, Jan 24, 2006 at 21:56
The mark on the crank gear should be in between the 2 marks on the pump gear.
AnswerID: 150670

Follow Up By: andrewv - Tuesday, Jan 24, 2006 at 22:31

Tuesday, Jan 24, 2006 at 22:31
I would agree with you but they dont (impossible)They are either aligned with top Z or the bottom Z of the pump sprocket.

regards andy
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FollowupID: 404212

Reply By: Exploder - Tuesday, Jan 24, 2006 at 22:15

Tuesday, Jan 24, 2006 at 22:15
So the one crack 'Z' is lined up in-between the 2 pump 'Z’s' and is pointing at a sprocket in-between the to 'Z’s' to a sprocket with no 'Z’s'.

Oh I need a Beer.

120’s right it’s fine.

AnswerID: 150678

Reply By: andrewv - Tuesday, Jan 24, 2006 at 22:36

Tuesday, Jan 24, 2006 at 22:36
Oh buy the way I have taken the liberty of taking a photo of the timing issue and am looking at it right now just to make sure I am right with regards to the pump sprocket marks and YES its either the bottom mark or the top mark no in between as one would expect.

regards andy
AnswerID: 150687

Reply By: 120scruiser - Friday, Jan 27, 2006 at 14:27

Friday, Jan 27, 2006 at 14:27
I hate to be the bearer of bad news all but I have a workshop manual infront of me.
The pump gear has 2 Z's. These 2 Z's line up with 1 Z on the idler gear. That is the idler gear Z is inbetween the 2 on the pump gear.
On the other side of the idler gear is a dot which lines up with a dot on the front
crankshaft gear. This dot is around the 5.30 mark. The Z's are around the 9.30 mark. At about 2.30 on the idler gear there is another dot which lines up in between 2 dots on the camshaft gear.
Most diesels use this for their timing. They either use the leters A,B,C or the numbers 1,2,3, or similar.
Straight from the manual Gregory's Patrol number 519, section 4 engines page number 110 under the heading Camshaft, Timing Gears and Front Engine Plate.

120scruiser.

P.S. If you Z on the idler is not in between the ones on the pump gear it is out of timing.
AnswerID: 151285

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