stiff pump head

jackecole · 27 Apr 2011

I have drained the primary circuit, removed the electrical connections, plus the 4 allen screws but cannot shift the pump head. it seems stuck! Any tips. I have tried crack iot release spray, a drop of oil but the pump head remains stubborn!! it's in a worcester cdi!

Deleted member 105431 · 27 Apr 2011

Give it a good clout with a lump hammer.

misterdubya · 27 Apr 2011

as DM has said or tap a small slotted screwdriver at several points behind the head.

You will shift it eventually.

Mr. W.

jackecole · 27 Apr 2011

i got it off, decided to remove the whole pump, undone 1 union and when undoinbg the bottom union, the head came off!!! but the impeller was snapped off ! i guess it was stiff!

ChrisR · 28 Apr 2011

I always tap my penknife blade into the crack.
Grundfos shafts are ceramic, so yep, they break!

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stiff pump head

jackecole

Deleted member 105431

misterdubya

jackecole

ChrisR

DIYnot Local

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