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rieg 
Silver Level
Joined: 17 Sep 2009
Location: swoh
Points: 364
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 Topic: Bleeding air from 175 after filter change?
Posted: 22 Jan 2018 at 2:31pm |
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I have a new to me 175 Allis changed the fuel filters pumped them full of fuel but can't get it to start. I am sure it has air in the system cracked the fuel lines at the injectors and do have fuel there but not a lot. I figure air in the pump I see what looks like a bleed screw on the side of the pump but not sure. Some suggestions would be great. thanks
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rieg
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Tbone95
Orange Level Access
Joined: 31 Aug 2012
Location: Michigan
Points: 11995
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Posted: 22 Jan 2018 at 2:37pm |
Do you have a helper? Not sure the specifics about "some fuel at the injectors". If you have someone that can crank for you, have the lines to all the injectors cracked. Have them crank. Do you still have fuel there or was that just originally there? If its there and keeps sputtering, keep cranking, the first one will get steady, tighten the line, the second will get steady, tighten that line, and before you know it the engine will run. If the cracked lines at the injector aren't getting any additional fuel, then you have more bleeding to do upstream.
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7445
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Posted: 22 Jan 2018 at 4:28pm |
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Each filter has a bleeder screw. Open the primary and prime until fuel comes out, then move to the secondary and repeat. There is also one on the pump to open. Once you have eliminated the air from these places, you should be good to go. If not, loosen off at the injectors.
The owner's manual has the procedure to follow.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Eldon (WA)
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Joined: 11 Sep 2009
Location: Spokane, WA
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Posted: 22 Jan 2018 at 6:53pm |
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They can be tough. Do the one on top of the primary filter first till no air bubbles, then the little one on the bottom of the pump and then the little one above it. If it won't start after 30 seconds of cranking do it all over again. It can also help to crack an injector line at the easiest injector to get to. I replaced the fuel pump with an electric one on one of my 175d's....that one is a snap to bleed!
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
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Posted: 22 Jan 2018 at 8:57pm |
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check the oring in the center of the filter s and make sure it runs a full stream from the tank if its the perkins it should take off prettey easy
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MACK
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Joined: 17 Nov 2009
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Posted: 22 Jan 2018 at 9:27pm |
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They have a poor plumping. Air from pump goes right back to filter. Unhook return line from pump into a container. Plug line going back to filter. Pump primer until fuel runs clear of air. Don't connect return line until it is running. Will take some cranking because lines to injectors may be full of air. MACK
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rieg
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Joined: 17 Sep 2009
Location: swoh
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Posted: 22 Jan 2018 at 9:32pm |
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Thanks guys the bleeding may have to wait the starter decided to start grinding so I took it off. I thought it was the ring gear but it looks like the starter gear. So where is this bleeder on the pump? thanks
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rieg
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mark-east-tn
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Joined: 06 Oct 2009
Location: Rutledge Tn
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Posted: 22 Jan 2018 at 9:39pm |
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If you have help , the easy way is to pull it off with another tractor put her in 4 th high on pd and she will start without burning starter up or draining battery down . Has worked for me a bunch over the years when there being stuborn to bleed out .......
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Eldon (WA)
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Joined: 11 Sep 2009
Location: Spokane, WA
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Posted: 22 Jan 2018 at 9:46pm |
 rieg wrote:
Thanks guys the bleeding may have to wait the starter decided to start grinding so I took it off. I thought it was the ring gear but it looks like the starter gear. So where is this bleeder on the pump? thanks |
Two identical hex head bolts....3/8 or 5/16 wrench.
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DrAllis
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Posted: 23 Jan 2018 at 7:26am |
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A tractor and a driver and a chain......PULL IT.
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