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saraajmele's avatar
saraajmele
Explorer
Jan 21, 2018

Repeat Cummins 5.9 electric lift pump failures

Hi our shops team has been tasked with troubleshooting a unit with repeat lift pumps failures. It’s on its fourth lift pump and all have have failed in less than a hour of run time. The chassis is a 1...
fj12ryder's avatar
fj12ryder
Explorer III
Jan 21, 2018
I take it you've checked out the electrical fittings and grounds thoroughly. I'd almost think there is an electrical problem, maybe a bad ground. Very unusual for lift pumps to fail that quickly, at least more than one anyway. What brand are you installing?

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