guntruck Posted January 19, 2017 Share Posted January 19, 2017 Just bought this truck, well maintained very clean truck. The fuel solenoids are leaking around the outside, hard to tell exactly where but NOT from the fuel line. seems to be from the outer cover where the 4 torx screws are. Is there a seal there? or maybe the o'rings leaking? Any ideas where to look? See pic below. Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/ Share on other sites More sharing options...
wheeler73 Posted January 19, 2017 Share Posted January 19, 2017 (edited) Yes there is 2 square o-ring behind the solenoid. The screws are tamper torx plus if I remember correctly. Edited January 19, 2017 by wheeler73 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/#findComment-358931 Share on other sites More sharing options...
guntruck Posted January 19, 2017 Author Share Posted January 19, 2017 3 minutes ago, wheeler73 said: Yes there is 2 square o-ring behind the solenoid. The screws are tamper torx plus if I remember correctly. I was hoping it was just an O'ring, I'll be pulling it apart tomorrow. There not leaking much so with new rings hopefully we will be ok. Thanks for the input! Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/#findComment-358934 Share on other sites More sharing options...
br549 Posted January 19, 2017 Share Posted January 19, 2017 you can get a o-ring kit from mack to fix it. It does take a tamper torx with a hole in the center. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/#findComment-358935 Share on other sites More sharing options...
Mackpro Posted January 19, 2017 Share Posted January 19, 2017 You can do it on the truck, it's tricky but it can be done 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/#findComment-358937 Share on other sites More sharing options...
Mackpro Posted January 19, 2017 Share Posted January 19, 2017 Part number 935-F00NH37759. I cant get it to pull up in the Mack parts system and they have removed the service bulliten on it. But they are some out on the web for sale. Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/#findComment-359013 Share on other sites More sharing options...
Mackpro Posted January 19, 2017 Share Posted January 19, 2017 (edited) I finally found it. And Mack does have it in stock. EUP SQUARE O-RINGS.pdf Edited January 19, 2017 by Mackpro 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/#findComment-359015 Share on other sites More sharing options...
guntruck Posted January 19, 2017 Author Share Posted January 19, 2017 Thank you! Quote Link to comment https://www.bigmacktrucks.com/topic/48429-99-mack-e7-460-fuel-solenoid-leaking-fuel/#findComment-359017 Share on other sites More sharing options...
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