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D9G Trouble Starting.....Fuel Issue?

D9G Trouble Starting.....Fuel Issue?

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gvanhouten
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I am new to the forum and need your help... I just purchased a D9G. 66A serial # It is in Hawaii and I can not for the life of me get it started...

First off the dozer has not been started for at least 3 years...

Here is what I have done...

Drained oil and replace with new of course and filters...

Replaced all 6 glow plugs

Replaced started wires and new starter... and new 40 amp fuse

Mystery oil in upper cylinder head through glow plugs... Lets sit for 12 hours and rolled engine afterwards...

Replaced Primary fuel filter

Replaced Secondary fuel filters.

Checked injection on IP pump (Plungers work nothing binded up)

Bled the lines through Air Vent Valve.

Replaced with fresh diesel... Drained the old out.


The issue is the fuel pressure gauge doesn't even move when cranking.. I know it needs to be 28psi... I did take out the the bypass valve to make sure it is clean.. No dirt looks very clean..

According to the service manual the only thing left is the fuel transfer pump...

How do you tell if the fuel transfer pump is the problem???? I removed it and the tang does not spin freely and was a bear to remove... I did crank the engine with the cover off of the transfer pump and the gears moved... Not sure if it is suppose to move faster....

So I am at a loss... I am pretty sure the fuel pressure is the issue as the engine just cranks and cranks with zero boom or smoke... I feel the pressure is not high enough to go through the injectors and into the cylinders...

Please help....
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Wed, Oct 2, 2019 1:48 PM
neil
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I guess at this stage the quickest route to determine that would be to replace it with a known good transfer pump
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Wed, Oct 2, 2019 7:08 PM
gvanhouten
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Reply to neil:
I guess at this stage the quickest route to determine that would be to replace it with a known good transfer pump


That is true I ordered one last night... Here is to hoping she will start.... if not that then probably the injection pump I would imagine.
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Wed, Oct 2, 2019 9:23 PM
Rome K/G
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Reply to gvanhouten:


That is true I ordered one last night... Here is to hoping she will start.... if not that then probably the injection pump I would imagine.
Did you fill the filter housing with fuel then put the cover on? Bleed air at top of filter housing while pumping priming pump? then when clear fuel appears bleed air at each pump while cranking starting with front pump and work your way back?
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Wed, Oct 2, 2019 9:40 PM
neil
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Reply to gvanhouten:


That is true I ordered one last night... Here is to hoping she will start.... if not that then probably the injection pump I would imagine.


The other tactic that is used on the small tractors is to very lightly pressurize the fuel tank to "force" the fuel through a worn or unbled pump. Works like a charm and is a lot less messy than bleeding : ) Put about 5psi to the tank using a rubber cap from Home Depot. Drill a hole in it and put in a spare Schrader valve that you have lying around the shop - tubeless style works or screw-down
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Wed, Oct 2, 2019 9:51 PM
gvanhouten
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Reply to Rome K/G:
Did you fill the filter housing with fuel then put the cover on? Bleed air at top of filter housing while pumping priming pump? then when clear fuel appears bleed air at each pump while cranking starting with front pump and work your way back?


Yes, Filled both primary and secondary filters with diesel. I only bled the system through the Air vent valve. According to the service manual that is how it is done...

Again, the fuel pressure gauge does not move at all... I have a remote starter switch hooked up to starter so I can be down by the fuel filter. I have not used the priming pump ie hand pump... As it is worn and needs replacing..
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Wed, Oct 2, 2019 10:24 PM
gvanhouten
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Reply to neil:


The other tactic that is used on the small tractors is to very lightly pressurize the fuel tank to "force" the fuel through a worn or unbled pump. Works like a charm and is a lot less messy than bleeding : ) Put about 5psi to the tank using a rubber cap from Home Depot. Drill a hole in it and put in a spare Schrader valve that you have lying around the shop - tubeless style works or screw-down


Okay, I heard about this. So take off gas cap... Plug it not sure what a rubber cap is? Are you referring to a giant black plug??? Thank you for your help
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Wed, Oct 2, 2019 10:27 PM
Old Magnet
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Reply to gvanhouten:


Okay, I heard about this. So take off gas cap... Plug it not sure what a rubber cap is? Are you referring to a giant black plug??? Thank you for your help
Check the clearance between the transfer pump cover and gears. Should run 0.0008 to 0.0020" max. Resurfacing the gear side of the cover can sometimes allow recovery if excessively worn. Also check the gear tip to housing clearance. Usually about 0.004" is max.

Adding air pressure to the tank requires flow past the pump determined by clearances. Rapid flow would also be an indicator of pump wear.
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Wed, Oct 2, 2019 10:40 PM
dpendzic
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Reply to gvanhouten:


Okay, I heard about this. So take off gas cap... Plug it not sure what a rubber cap is? Are you referring to a giant black plug??? Thank you for your help


an old inner tube cut to fit around the tank neck with the fill valve with a clamp works pretty well also
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Wed, Oct 2, 2019 11:02 PM
gvanhouten
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Reply to Old Magnet:
Check the clearance between the transfer pump cover and gears. Should run 0.0008 to 0.0020" max. Resurfacing the gear side of the cover can sometimes allow recovery if excessively worn. Also check the gear tip to housing clearance. Usually about 0.004" is max.

Adding air pressure to the tank requires flow past the pump determined by clearances. Rapid flow would also be an indicator of pump wear.
[quote="Old Magnet"]Check the clearance between the transfer pump cover and gears. Should run 0.0008 to 0.0020" max. Resurfacing the gear side of the cover can sometimes allow recovery if excessively worn. Also check the gear tip to housing clearance. Usually about 0.004" is max.

Adding air pressure to the tank requires flow past the pump determined by clearances. Rapid flow would also be an indicator of pump wear.[/quote]

Thank you for that. I ordered the new transfer pump and will probably cool my heals as she is so frustrating. It has the old primer plunger type pump that all the seals are completely shot... that connect to the cover of the transfer pump... Thanks and I will update everybody with the new pump and gauge and see if that helps out...
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Wed, Oct 2, 2019 11:44 PM
gvanhouten
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Reply to dpendzic:


an old inner tube cut to fit around the tank neck with the fill valve with a clamp works pretty well also


That makes good sense I will try that as well...
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Wed, Oct 2, 2019 11:45 PM
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