Farm Equipment - Allis 7020

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Allis 7020

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=163570
Printed Date: 09 Sep 2025 at 4:31am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis 7020

Posted By: mnjoe
Subject: Allis 7020
Date Posted: 11 Aug 2019 at 8:36pm

Was planting cover crops today. I noticed an oily spot behind my square fuel filter. I can wipe the block and watch it flow. Is there a plug that is leaking??? Looking for ideas......Thanks

Replies:

Posted By: Lynn Marshall
Date Posted: 11 Aug 2019 at 8:40pm

Probably the oil pressure sending unit.

Posted By: DSeries4
Date Posted: 11 Aug 2019 at 9:23pm

Is it oil or diesel? We are not there to see for ourselves. Only you can determine what it is and where it is coming from.

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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080

Posted By: mnjoe
Date Posted: 11 Aug 2019 at 9:33pm

It does not smell like diesel..feels like oil. Will get a mirror and look behind tomorrow.

Posted By: MACK
Date Posted: 11 Aug 2019 at 9:51pm

Oil pressure sending units are known to leak. MACK

Posted By: B&C Farms
Date Posted: 11 Aug 2019 at 10:02pm

working on my brothers 9745 trying to get the ac to work. I have power to the relay by the fun but can not get the compressor to kick in or the fan in front of the radiator to work can jump the relay and get each one to run just will not work with the relay the relay is new and pressures are 40 low side 240 on the high side any help would be great thank you

Posted By: JayIN
Date Posted: 12 Aug 2019 at 6:41am

9745???? Wrong forum.

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sometimes I walk out to my shop and look around and think "Who's the idiot that owns this place?"

Posted By: mnjoe
Date Posted: 12 Aug 2019 at 4:17pm

It looks like the sending unit by feel. So what is the best way to replace it? Remove starter or fuel filter setup? thanks

Posted By: MACK
Date Posted: 12 Aug 2019 at 9:28pm

Fuel filter bracket. MACK