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Stuck In Hawaii D9G Still Wont start!!! Bad Injection Pump????
Stuck In Hawaii D9G Still Wont start!!! Bad Injection Pump????
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Posts: 783
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4 years 10 months ago #207533
by oldbeek
If upon testing injectors for a good spray and getting fuel then I have a nagging feeling from earlier comments that the previous owner said it was always a difficult starter after an engine overhaul, does this tractor have an injection timing issue, not knowing the extent of the overhaul etc, I am starting to think injection timing might be very retarded, way after TDC. Failing that a valve camshaft timing issue, though I tend to think not.
If the go gas is making it knock a lot I believe there is sufficient compression to heat the air to ignite it, thus my feeling is somehow the injection timing is all up the spout. Not being familiar with D9's I don't know where or how it could be made to be so far out.
Just a mad rambling thought. Wombat
. That is why I said, if you get a good spray pattern, Then adjust the individual pump timing settings. Doesn't need to be to far retarded to be a hard starter. Person that previously sent the pumps may have used the wrong demension and they are all injecting late. The old owner said it was always a hard starter.
Cat 12 grader, 8T6995 running and restoring, Cat 12 grader 9K3585. parts machine, Adams leaning wheel Pull grader Mod # 22, ser#438
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4 years 10 months ago #207565
by Old Magnet
If a person was not familiar with the timing pin procedure for timing the pump it could be set anywhere as the coupling is not indexed between the auxiliary drive and the intermediate pump shaft and relies on a clamped coupling once timing to #1 cylinder is established. The pump to intermediate shaft connection is a splined coupling.
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4 years 10 months ago #207664
by gvanhouten
He must have forgot about all of us...
Hardly just flew in last night back home... Had an operation and will be up and running tommorow... So stay tuned... I have my injection pump and maybe later I will take some pict of the cam ect... and post of corse... Thank you all so much and I promise will update you as soon as I get to my feet... Stay tune....
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4 years 10 months ago #207672
by Walt D7-3T
Hey George,
I have been following your "problem" for quite a while. I am NOT any kind of Cat mechanic (I am a retired Computer Programmer) but as I have been watching the pogress, the thought occurs to me that with what you have spent on many different parts, could it be possible that the same money could be better spent on getting a Cat Mechanic out to "fix" the problem.
Of course I am assuming there is a Cat shop somewhere there. ALSO, I am well aware the you simply might enjoy working on the D9 yourself.
I just wanted to let you know what I am thinking.
Walt D7-3T (in Arizona)
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4 years 10 months ago #207678
by Rome K/G
UH.....half the mechanics at the dealerships today would not even go near a 50 year old mechanical machine unless they can hook a laptop to it and do diagnostic survey, pre inspection, trouble shoot, hazard situation, cost survey analysis and so on first.
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4 years 10 months ago #207681
by kracked1
UH.....half the mechanics at the dealerships today would not even go near a 50 year old mechanical machine unless they can hook a laptop to it and do diagnostic survey, pre inspection, trouble shoot, hazard situation, cost survey analysis and so on first.
This is so very true. The parts dept couldn't find the parts either.
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4 years 10 months ago #207682
by gvanhouten
This is so very true. The parts dept couldn't find the parts either.
So true... This is called troubleshooting... And yes it is not easy.... But well worth the wait....I will get back at it tommorow and start updating again...
Trust me I would be in $4,000 plus and caterpillar would still not know what to do with their 50 year old machine however I put my money on the people here....
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4 years 10 months ago #207713
by gvanhouten
Hi everyone,
Here we go this is for everybody to take a look at... The cam is checked out the rack is inspected... Looks good to me but I need the real experienced guys and their input... Appreciate it...
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Stuck In Hawaii D9G Still Wont start!!! Bad Injection Pump????
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