160 fuel pump and lines help!
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=174022
Printed Date: 29 Jul 2025 at 11:43pm
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Topic: 160 fuel pump and lines help!
Posted By: johnea4
Subject: 160 fuel pump and lines help!
Date Posted: 01 Sep 2020 at 9:20pm
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I'm changing the fuel lift pump on my new to me 160 with a loader because i think it is either weak or has internal blockage. But the lines and connections are confusing me. Inlet and outlet threads seem to be 5/16" flare threads, the line going into the bowl is a 5/16 compression and the line coming out of the pump is a 1/4" flare. Tried putting them back on it as is but leaks terribly at both connections just with gravity. Previous owner apparently got them to not leak by inserting small o-rings (one of which may be what's blocking the flow.) Looking into the inlet and outlet it doesn't look like it should work with flare or compression without a special fitting of some sort. Parts diagram isn't much help. So should they both be compression (with the brass ferrule) or both be flared, and what fittings should be used? Any advice or pictures would be appreciated! Thanks, John
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Replies:
Posted By: DSeries4
Date Posted: 02 Sep 2020 at 9:36am
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I had the same problem on my 175 - also a Perkins engine. From the tank I used a flare nut with a ferule and that held good. Just couldn't get the outlet line to the filter to seal up. I did try a new rubber O ring on the line and that seemed to do the trick. Funny how the compression fitting only works on one side. Must be a British thing? ------------- '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 |
Posted By: farmtoybuilder
Date Posted: 02 Sep 2020 at 9:39am
orgianl perkins lines use these style rubber seals on them.  ------------- 5 different TT-10's,5 TT-18's Terra Tigers,B-10,2 B-207's,B-110,2 B-112's,HB-112,B-210,B-212,HB212,2 Scamp's & Homilite T-10. Still hunting NICE HB-112 & anything Terra Tiger & Trailers for them. |
Posted By: johnea4
Date Posted: 03 Sep 2020 at 9:51pm
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Ok, those answers help put me on the right track. Where can those Perkins seals be found? What i pulled out of the outlet on the pump looked kind of like those. Thanks for the help, i need my loader back in operation!
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Posted By: lowell66dart
Date Posted: 04 Sep 2020 at 7:45am
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Try a diesel fuel injection repair shop if you have one near you or call some of the vendors that support this site. ------------- AC 6080 (8030,7060,200,175,D-17HC, 6040,160,6140 all gone) Farmall 1066 & 656 Hi-Clear (for sale), White 2-62 High Clearance, JD 4255 Hi Clear. |