HV7 injectors
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=187206
Printed Date: 27 Nov 2024 at 6:40pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: HV7 injectors
Posted By: WaltDevore
Subject: HV7 injectors
Date Posted: 22 Mar 2022 at 1:41pm
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Back to the 271 HD5. Seems I"m not getting any fuel into the cylinders but am getting it into the oil pan. I have injectors out now, primed them with Blaster, and tapped on the top spring with a rubber mallet. No spray out the tips whatsoever. I saw that on Youtube. After calling around, nobody works on them. I wonder why? Is it worth trying to rebuild? I have manual. I did do one to replace the tip, worked some for a while, but nothing now. Any advice appreciated. I'd sure love to be able to fix them. I guess PC Industries would be next step barring life saving suggestions. Thanks. |
Replies:
Posted By: CAL(KS)
Date Posted: 22 Mar 2022 at 2:54pm
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there are places out there that will rebuild or exchange just have to scour the net, but PC industries is a good place to work with been there for blower rebuild kit ------------- Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20 Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15 |
Posted By: injpumpEd
Date Posted: 22 Mar 2022 at 4:37pm
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I have sold Interstate McBee reman injectors for these before. Very reasonably priced and very high quality. Someone local should be able to get them. ------------- 210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers! |
Posted By: gemdozer
Date Posted: 22 Mar 2022 at 6:17pm
| I check tomorrow if am still have some HV7 injector |
Posted By: WaltDevore
Date Posted: 22 Mar 2022 at 7:31pm
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Thank you. So kind. |
Posted By: Amos
Date Posted: 22 Mar 2022 at 8:01pm
| Fuel in your oil pan could be coming from your fuel gear pump on the gear case leaking. |
Posted By: Eric B
Date Posted: 22 Mar 2022 at 11:09pm
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Last time I needed a '71 injector' I went to a place that wrecks out trucks and got a good used one for $20. ------------- Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal! |
Posted By: WaltDevore
Date Posted: 22 Mar 2022 at 11:10pm
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would that be possible from a new fuel pump? |
Posted By: Amos
Date Posted: 23 Mar 2022 at 6:43am
| or you could have a fuel injector line leaking too in the rocker box hole or loose fitting |
Posted By: Codger
Date Posted: 23 Mar 2022 at 8:43am
| I may have a couple of those at the shop and will look. That is the older 2 Valve head correct? I think you could install a set of N45 series injectors also but can't say entirely for certain if the spray pattern would be correct. |
Posted By: WaltDevore
Date Posted: 23 Mar 2022 at 12:28pm
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Yes, that is correct. I just back flushed through both intake and return with carb cleaner. It took a bit for the fluid to trickle out the other side. I'm wondering if the screens or screen could be clogged. I"m not with my tools right now. I hate to give up but with decent weather finally coming I've got to get to it. Been a full year project pulling and rebuilding the 271 and replacing the track idler. My fear is was it all for nothing. |
Posted By: TramwayGuy
Date Posted: 23 Mar 2022 at 12:45pm
| Replace the HV injectors with newer style. Less smoke and more fuel efficient. You can use ‘N’ or even ‘C’, if memory serves.. |
Posted By: WaltDevore
Date Posted: 23 Mar 2022 at 12:59pm
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Didn't know that was in the cards. Thanks |
Posted By: Ray54
Date Posted: 23 Mar 2022 at 1:32pm
I have never seen the fuel pump leak into the crank case, but sure could. But have had the lines on top of the head go bad several times. There need to be tight, but they can be over tightened and leak to. So not a job for the biggest muscles in the shop, needs a bit of experience and finesse with the term tight,  but not to tight.
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Posted By: Eric B
Date Posted: 23 Mar 2022 at 1:55pm
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I had a truck with significant fuel dilution through the body seals of the injectors on a 53 series Detroit. As has been mentioned the fuel lines can leak. Had this happen when a shop rebuilt my inline 6-71. Crankcase built up in no time. Back to the shop it went, the boss gave some flack to the mechanic that had done the work. ------------- Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal! |
Posted By: WaltDevore
Date Posted: 23 Mar 2022 at 2:25pm
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If I can keep it running I'll inspect it with the valve cover off. Thanks. |
Posted By: gemdozer
Date Posted: 23 Mar 2022 at 3:07pm
| I have no more HV7 only HV6 |
Posted By: Amos
Date Posted: 23 Mar 2022 at 3:51pm
| You don't need to have it running to see the lines . Just pressurize the fuel system with shop air or even a small hand sprayer and you will likely see the leak with the rocker cover off. If it was me i'd put rebuilt injectors in it minor cost if you plan to use it any at all. Then you will never have any trouble with them for the rest of the life of the machine. |
Posted By: WaltDevore
Date Posted: 23 Mar 2022 at 4:29pm
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Sounds smart. Thank you. |
Posted By: Codger
Date Posted: 24 Mar 2022 at 2:48am
| I found one HV7 and have another box of injectors not yet located in my shop. This one is rebuilt I'm thinking but never used from a spare 1-71 engine for an irrigation pump. |
Posted By: Coke-in-MN
Date Posted: 24 Mar 2022 at 10:29am
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the injector lines - both inlet and outlet crack at the flare if tightened beyond recommended torque - which is in Inch Pounds - I had injectors checked and rebuilt at a Detroit Diesel service center ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: WaltDevore
Date Posted: 24 Mar 2022 at 11:20am
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What a barren waste land. Have called many places. No abilities at all here in Colorado. |
Posted By: WaltDevore
Date Posted: 24 Mar 2022 at 11:22am
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I will hold off to hear from you. Better to recycle than buy new. Thanks for your effort. Walt 303 949 5947
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Posted By: Coke-in-MN
Date Posted: 24 Mar 2022 at 10:53pm
https://www.agkits.com/search.aspx?find=HV7+Injectors
https://www.agkits.com/detroit-diesel-plunger-and-barrel-hv7-71-5228304.aspx" rel="nofollow - Detroit Diesel Plunger & Barrel, Hv7 71, 5228304$63.44 Availability: https://schema.org/InStock" rel="nofollow - https://www.agkits.com/detroit-diesel-plunger-and-barrel-hv7-71-5228304.aspx" rel="nofollow">  Interchanges: 5228304, Plunger & Barrel, Hv7 71 https://www.agkits.com/detroit-diesel-spray-tip-hv7-71-5228554.aspx" rel="nofollow - Detroit Diesel Spray Tip, Hv7, 71, 5228554$26.95 Availability: https://schema.org/InStock" rel="nofollow - https://goldfarbinc.com/products/5228305-hv7-detroit-fuel-injector-rebuilt" rel="nofollow - 5228305R (5228305) Rebuilt (HV7) Fuel Injector fits Detroit Engine. Goldfarb & Associates Inc. Competition Price — $75.00 USD. Our Price — $50.00 USD. $50.00 · Free 1-9 day delivery · https://schema.org/InStock" rel="nofollow - https://schema.org/InStock" rel="nofollow -
------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: injpumpEd
Date Posted: 25 Mar 2022 at 9:30am
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Interstate has 5 reman HV7 injectors in their Neb warehouse. $150 each. ------------- 210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers! |
Posted By: Codger
Date Posted: 25 Mar 2022 at 10:26pm
| I've found a box of core injectors of the N45, N55, and N65 varieties, but have yet to find the box I'm looking for. I'll keep looking but won't be around tomorrow. |
Posted By: WaltDevore
Date Posted: 01 Apr 2022 at 9:43pm
In trying to reassemble the injector with a new tip, the spring got away from me and the parts got launched into lunar orbit. I have recovered them somehow except for the smallest parts, 16,17, and 18 on the diagram. After being overwhelmed by the whole thing, I finally discovered, I think, a trick to squeeze the parts just right to get that side retaining pin in. I'm lucky my face wasn't impacted by all this. My budget has been stripped bare and hoping someone may have a good or bad injector around that those parts could be scavenged from. As always, pure joy in the challenge.
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Posted By: JC-WI
Date Posted: 28 May 2022 at 11:53am
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Looks like I'll be in for learning curve on a 2-71. Rack won't move,
and a big gap between top of injector plunger and
injector rocker arm on one injector. Don't think that is right. Injector plunger stuck  ------------- He who says there is no evil has already deceived himself The truth is the truth, sugar coated or not. Trawler II says, "Remember that." |
Posted By: gemdozer
Date Posted: 28 May 2022 at 5:54pm
| I am still have some HV6 injectors |
Posted By: Ian Beale
Date Posted: 28 May 2022 at 8:25pm
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O/T Gemdozer there is a bloke a couple of posts down looking for parts for a M100 grader and I name-dropped you
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Posted By: gemdozer
Date Posted: 28 May 2022 at 9:03pm
| THANKS BUT HAVE NO MORE M100 PARTS. |
Posted By: DMiller
Date Posted: 29 May 2022 at 11:33am
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The main concern of Home Rebuilding Detroit Diesel injectors in NOT having a bench to test after completed, then Not having a Lapping block to fit all the Hand Fitted pieces together then not having the cleanest bench to do the work where as small as a grain of dust gets inside and the close fit up will lock the injector parts mid stroke. I managed to repair series 110 engines in a old quarry shop loaded with dust and dirt but always knew we could stick a injector.
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Posted By: WaltDevore
Date Posted: 29 May 2022 at 12:02pm
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My problem was an incredible amount of silt that accumulated in the fuel tank. My filters were completely clogged. It took multiple rinses of the tank to mostly clear it out and a few filters to finish the job. Blowing the fuel lines out was also necessary. Amazing how much bad fuel they can hold. I tried rebuilding the injectors but it was too tedious and difficult. Ended up replacing them with two from Powerline Components in Afton, Wyoming. Finally, it seems to be okay for the time being. I'm so gun shy about my tractor. |