190xt injection line seals
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=209819
Printed Date: 21 Mar 2026 at 10:28pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 190xt injection line seals
Posted By: A&Sfarms
Subject: 190xt injection line seals
Date Posted: 22 Jan 2026 at 9:45am
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Did an overhaul on the engine including injection pump and injectors for my 190xt 2 winters ago. The kit came with white plastic washers for the banjo bolts on the injection pump and some have always leaked, but the leak is getting worse. Bolts were torqued to spec upon install and have been tightened up as far as I feel comfortable since trying to get them to seal. I went to the dealer and they had aluminum washers with a smaller plastic washer inside as replacements at a cool $20 per washer. Needing 12 of them bad boys was going to cost a pretty ridiculous amount. The parts guy pointed me to a Deere dealer with what looks like a black oxide washer for $0.13 a piece. That was cheap enough for me to go ahead and buy and see. It has been way too cold for me to get them installed yet. Do you guys have the answer on this? Are the 2 piece, $20 washers the answer for a good seal? I was expecting copper, but no one offered that.
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Replies:
Posted By: DrAllis
Date Posted: 22 Jan 2026 at 10:36am
Posted By: SteveM C/IL
Date Posted: 22 Jan 2026 at 10:48am
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black Deere one are what you want. Everything clean of course. Book say 35 ft lb IIRC. It's a scary pull and some impossible to get a torque wrench on. I do by hand and get em tight as Doc says.
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Posted By: A&Sfarms
Date Posted: 22 Jan 2026 at 11:30am
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Thanks guys. Good to hear I ended up with the right ones then. And the cheap ones for a change! Definitely didn't tell the Deere guy what I was working on.... just in case.
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Posted By: PaulSamwel
Date Posted: 22 Jan 2026 at 11:59am
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Working on a 185 with pump issues.Would those Deere seals your talking about be part number T20055?
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Posted By: KJCHRIS
Date Posted: 22 Jan 2026 at 3:04pm
I had a pump off a few months ago. I came from pump shop with 12 of the black metal washers for the banjo bolts. just like they have for 50 years.
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Posted By: Lynn Marshall
Date Posted: 22 Jan 2026 at 5:37pm
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Paul,yes, that John Deere number seems to be correct. Also yes, that type of sealing washer is the kind to use.
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Posted By: PaulSamwel
Date Posted: 22 Jan 2026 at 5:42pm
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Thanks for the reply Lynn!
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Posted By: DougG
Date Posted: 22 Jan 2026 at 6:35pm
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Sometimes you have to tighten them up,, loosen then retighten,,,
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Posted By: tbran
Date Posted: 26 Jan 2026 at 11:03am
I have never seen anything but single steel washers -12 of them. Some were silver colored and some black. They are soft enough to deform and seal. I would doubt any non-metallic seal to hold the pulses at 3000 PSI +
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When told "it's not the money,it's the principle", remember, it's always the money..
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Posted By: WF owner
Date Posted: 26 Jan 2026 at 4:26pm
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I always found that once the washers leaked, they were almost impossible to get sealed without installing new washers.
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Posted By: HudCo
Date Posted: 26 Jan 2026 at 6:25pm
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the pump on a 856 farmall that i done last spring had a little grove machined in the fittings on all the fuel supply and return lines on the roosa pump , they were alittle tapered nylon seal that looks like the steel ones but they will not interchange cnh was 10$ each
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