Need clarity: newer Mp40qd guards don’t fit well and wet sides tend to drop off...

[plankton]

Been using mp10/40 for years and noticed my newer mp40qd guards are loose and don’t fit as snugly as before and actually vibrates off! Secondly the wet sides them selves fall off using just rubber spacer on 1/2” (12mm) glass.

Many others have reported these observations on R2R and wondering what the work around / fixes are?

TIA

PS i own two mq10qd and two mp40qd

 

[Saltyreef]

This oring, being either worn or out of place, should fix the loose wetside cage guard issue.

O-ring for MP40 Wetside

store2.ecotechmarine.com

The rotating can be fixed by removing any biofilm from the glass prior to installation of the wetside.
Sometimes mine rotates and i put pressure onto the wetside and move it side to side about a cm or 2 until i feel more friction against the glass.

 

[plankton]

This oring, being either worn or out of place, should fix the loose wetside cage guard issue.

O-ring for MP40 Wetside

store2.ecotechmarine.com

The rotating can be fixed by removing any biofilm from the glass prior to installation of the wetside.
Sometimes mine rotates and i put pressure onto the wetside and move it side to side about a cm or 2 until i feel more friction against the glass

Thanks for feedback but worn o-ring on a new mp40qd? I get biofilm and honestly I have to move the wet side around several times at low dry side speed before the two halves sink.

There is something else going on with these new units that wasn’t a problem with older QD pumps....

 

[Saltyreef]

Oh, i misunderstood as you bought new guards for your older units.
Sorry!
Is the o-ring in place?