Hydrovane 501 repair

[oilyfinger]

Ordered a new coupling as the one on my own machine had shattered
Stripped and inspected the pump and can see nothing wrong. Correct amount of oil and no scoring, corrosion or real wear, turns freely by hand. Oil needed changing (a bit black) but quantity was correct.
This compressor side of the coupling is machined from alloy and looks really nice but the motor side looks shocking. Look at the rusty bolts used I suspect to balance the impellor.
Any thoughts? I’m reluctant to fit this in case it causes damage.
It’s a pattern part. If it was £10 fri. China is maybe accept it for what it is but it’s £90 from a Uk supplier
I suspect given that there’s a pattern part available that there’s good enough demand for them to produce them
Motor starts and runs quietly, original impellor ran true, just the lugs on the drive side had sheared off.

 

[gordon stephenson]

Does the motor run smoothly on a solo run.?

 

[oilyfinger]

Does the motor run smoothly on a solo run.?

Yes it does. Just edited post but with the original impellor it ran true, just the drive lugs/ points were broken off it.

 

[oilyfinger]

This is the part in question I purchased

Pardon our interruption...

 

[scottmk1]

I'd be getting onto the supplier about the rusty bolts

 

[Ped]

I'd be sending the bugger back! I suspect they've sent an original out to a 'foundry' abroad and got it copied. There was a Hydrovane engineer on here a while back.

 

[oilyfinger]

I'd be getting onto the supplier about the rusty bolts

Their reply:-
We sell between 100-130 pcs of this kit per year and have done for the last 8 year and never had issues with these, I agree and respect the bolts don’t look nice but with the volumes we supply ive never had any issues from this impeller im confident in these,
If you fill you cant fit buddy please return all to the below and were get you credited

 

[m_c]

That looks like a part that's been sandblasted.

What I can't make out, is that bolt worn/ground down, or has it had a blob of weld added?

Although, I can't understand why you would sandblast it, after it's been balanced, unless it's either a second hand part that's been cleaned up, or they've had to remove a coating.

 

[oilyfinger]

That looks like a part that's been sandblasted.

What I can't make out, is that bolt worn/ground down, or has it had a blob of weld added?

Although, I can't understand why you would sandblast it, after it's been balanced, unless it's either a second hand part that's been cleaned up, or they've had to remove a coating.

Yes it’s been blasted, bolt has been welded yes.
I suspect it had the bore machined after blasting or it was masked off.
it’s not a used genuine hydrovane item. The casting isn’t anywhere near upto Hydrovane standards.