Ford 7610s won't crank!!!! - Competition Diesel.Com

strawboss · 12-30-2010, 07:16 PM

History: Tractor caught fire around the engine compartment. mostly contained to the radiator/battery area. fuel return lines melted and fuel bowl mush! wiring harness is a mess!

Any way, Can't seem to get it to crank. has fuel going to pump but wont push any to injectors. No air in line and fuel is clean... New fuel shutoff, new return lines.etc

Pulled it around about 1 1/2 miles and it don't even smoke!

What am I missing?

Thanks
William

CSnyder · 12-30-2010, 07:39 PM

crack every line you can.

Signature600 · 12-30-2010, 07:43 PM

Electric shut off or mechanical?

Chris

Cumminsfever · 12-30-2010, 08:28 PM

Mechanical lift pump diaphragm melted? Or internal pump seals ruined?
Probly has inline simms pump. A somewhat weird pump. Make sure it has oil in it.

strawboss · 12-31-2010, 06:32 AM

Snyder: Cracket two injector lines pulled it 1.5 miles in eigth gear.....no spewing of fuel(tank is full) so all air should go to the top of the sed. bowl and bleed it self. I've even put pressure on the tank and fuel came out of the line at the pump!

600: Electrical shut off(melted in fire, replaced)

Fever: no lift pump, just a priming pump above filter. and itsfull of fuel and plenty of fuel at back of inj pump. The pump is a rotary,

New Holland 7610S 4 CYL AG TRACTOR

I wonder if a piece of melted plastic or water that we put the fire out with has found its way into the pump.

Signature600 · 12-31-2010, 07:08 AM

How close was the fire to the pump?

If it melted the electric shut off, it very easily could have melted more important things inside the pump.

Are you getting juice to the electric shut off?
Chris

Signature600 · 12-31-2010, 07:09 AM

BTW, is that a CAV injection pump? Looking online at the parts, it kinda looks like it. If it is, they are a ROYAL PITA to get bled out, and they WILL NOT start until you get them bled.

Chris

strawboss · 01-01-2011, 09:23 PM

Sig, yea its a cav (guessing) the fire got to the id plate, not bad just illegible. It IS a PITA to bleed but there wasn't any fuel coming out of the inj lines after it was pulled a long distance.
Still nursing a hangover and scratching my head today!!
Happy New Year!

strawboss · 01-05-2011, 06:23 PM

Got it fired up today!! Faulty cut off switch!!!! Now to work on the harness....

CSnyder · 01-05-2011, 06:28 PM

good to hear!

strawboss · 01-08-2011, 07:11 AM

I don't think that wiring harnesses should be made in third world countries!!!!!!!

Signature600 · 01-08-2011, 07:25 AM

Quote:

Originally Posted by strawboss

I don't think that wiring harnesses should be made in third world countries!!!!!!!

Where was that tractor built? Cheaper tractors have cheaper parts...not much you can do to change that anymore! Not knocking NH either, all the OEM's do it anymore!

Just FYI, those CAV's will NOT start even when pulled if you don't have the top and bottom bleeders bled completely!

I know that wasn't the case this time, but just in case. They really suck!

Chris

strawboss · 01-10-2011, 07:25 PM

Quote:

Originally Posted by Signature600

Where was that tractor built? Cheaper tractors have cheaper parts...not much you can do to change that anymore! Not knocking NH either, all the OEM's do it anymore!

Just FYI, those CAV's will NOT start even when pulled if you don't have the top and bottom bleeders bled completely!

I know that wasn't the case this time, but just in case. They really suck!

Chris

Not quite sure where it was built but I do know that they were made in the U.S.
The wiring harness was made in mexico(that is why the unemployment rate is 9.8%) and is too short in places and the color code is different!!!!

12-30-2010, 07:16 PM	#1
strawboss Name: strawboss Title: 5thGenFarmer Status: Not Here Join Date: Apr 2009 Location: Gods Country USA! Member`s Gallery Posts: 223	Ford 7610s won't crank!!!! History: Tractor caught fire around the engine compartment. mostly contained to the radiator/battery area. fuel return lines melted and fuel bowl mush! wiring harness is a mess! Any way, Can't seem to get it to crank. has fuel going to pump but wont push any to injectors. No air in line and fuel is clean... New fuel shutoff, new return lines.etc Pulled it around about 1 1/2 miles and it don't even smoke! What am I missing? Thanks William

12-30-2010, 07:39 PM	#2
CSnyder Name: CSnyder Title: Snyder-Motorsports Status: Not Here Join Date: Mar 2008 Member`s Gallery Posts: 6,278	crack every line you can. __________________ Alot of my life is easier thanks to Mumau Diesel! and Goerend Transmission There is a HUGE difference between cocky and confident when it comes to engine building.

12-30-2010, 07:43 PM	#3
Signature600 Name: Signature600 Title: THA MAN! Status: Not Here Join Date: Aug 2006 Location: Jeffersonville, Ohio Member`s Gallery Posts: 11,974	Electric shut off or mechanical? Chris __________________ THANKS TO: Tim Barber @ TRE Diesel Jeff Mumau @ Mumau Diesel Service Rip @ Source Automotive Don Thuren @ ThurenFab Suspension Columbus Diesel Supply

12-30-2010, 08:28 PM	#4
Cumminsfever Name: Cumminsfever Title: Steering wheel holder Status: Not Here Join Date: Mar 2009 Member`s Gallery Posts: 745	Mechanical lift pump diaphragm melted? Or internal pump seals ruined? Probly has inline simms pump. A somewhat weird pump. Make sure it has oil in it. __________________ 1999 Dodge Qc Sb Sport black 4x4 auto, p-pump, 35/40& ht3b. 1992 GMC K1500 4bt. Once made 496hp. Always broke. Now ve-pumped and made 360hp with 12mm pump. 1994 Chevy K1500 3.8 vm i6 idi hx30/hx52 Never judge a man's horsepower by his exhaust

12-31-2010, 07:08 AM	#6
Signature600 Name: Signature600 Title: THA MAN! Status: Not Here Join Date: Aug 2006 Location: Jeffersonville, Ohio Member`s Gallery Posts: 11,974	How close was the fire to the pump? If it melted the electric shut off, it very easily could have melted more important things inside the pump. Are you getting juice to the electric shut off? Chris __________________ THANKS TO: Tim Barber @ TRE Diesel Jeff Mumau @ Mumau Diesel Service Rip @ Source Automotive Don Thuren @ ThurenFab Suspension Columbus Diesel Supply

12-31-2010, 06:32 AM	#5
strawboss Name: strawboss Title: 5thGenFarmer Status: Not Here Join Date: Apr 2009 Location: Gods Country USA! Member`s Gallery Posts: 223	Snyder: Cracket two injector lines pulled it 1.5 miles in eigth gear.....no spewing of fuel(tank is full) so all air should go to the top of the sed. bowl and bleed it self. I've even put pressure on the tank and fuel came out of the line at the pump! 600: Electrical shut off(melted in fire, replaced) Fever: no lift pump, just a priming pump above filter. and itsfull of fuel and plenty of fuel at back of inj pump. The pump is a rotary, New Holland 7610S 4 CYL AG TRACTOR I wonder if a piece of melted plastic or water that we put the fire out with has found its way into the pump.

12-31-2010, 07:09 AM	#7
Signature600 Name: Signature600 Title: THA MAN! Status: Not Here Join Date: Aug 2006 Location: Jeffersonville, Ohio Member`s Gallery Posts: 11,974	BTW, is that a CAV injection pump? Looking online at the parts, it kinda looks like it. If it is, they are a ROYAL PITA to get bled out, and they WILL NOT start until you get them bled. Chris __________________ THANKS TO: Tim Barber @ TRE Diesel Jeff Mumau @ Mumau Diesel Service Rip @ Source Automotive Don Thuren @ ThurenFab Suspension Columbus Diesel Supply

01-01-2011, 09:23 PM	#8
strawboss Name: strawboss Title: 5thGenFarmer Status: Not Here Join Date: Apr 2009 Location: Gods Country USA! Member`s Gallery Posts: 223	Sig, yea its a cav (guessing) the fire got to the id plate, not bad just illegible. It IS a PITA to bleed but there wasn't any fuel coming out of the inj lines after it was pulled a long distance. Still nursing a hangover and scratching my head today!! Happy New Year!

01-05-2011, 06:23 PM	#9
strawboss Name: strawboss Title: 5thGenFarmer Status: Not Here Join Date: Apr 2009 Location: Gods Country USA! Member`s Gallery Posts: 223	Got it fired up today!! Faulty cut off switch!!!! Now to work on the harness....

01-05-2011, 06:28 PM	#10
CSnyder Name: CSnyder Title: Snyder-Motorsports Status: Not Here Join Date: Mar 2008 Member`s Gallery Posts: 6,278	good to hear! __________________ Alot of my life is easier thanks to Mumau Diesel! and Goerend Transmission There is a HUGE difference between cocky and confident when it comes to engine building.

01-08-2011, 07:11 AM	#11
strawboss Name: strawboss Title: 5thGenFarmer Status: Not Here Join Date: Apr 2009 Location: Gods Country USA! Member`s Gallery Posts: 223	I don't think that wiring harnesses should be made in third world countries!!!!!!!