knapsack sprayer not holding pressure

[dogman]

My knapsack sprayer isn't pressurising, any ideas ?

 

Regards,

 

Rob

[C.J]

I'm guessing the diaphragm is O.K or it would be leaking.

 

My C.P has a knob inside to change between High and Low pressure.

 

It works a bit like a bayonette light bulb so H compresses the relief valve spring a bit more than L.

 

The plastic pipe that the knob fits on corroded ,causing the knob to pop up and create no pressure.

 

Is yours like that ?

[dogman]

Sounds like yours is a better one than mine, but i'll have a look.

 

Rob

[humpo48]

Buy a service kit for it, will have all the o rings etc you need to get it back up and running correctly

 

 

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[Will Heal]

Buy a service kit for it, will have all the o rings etc you need to get it back up and running correctly

 

 

Sent from my iPhone using Arbtalk mobile app

 

 

Yep, and use a bit of vasaline to lubricate any moving parts

[Hobbsurf]

Yep, and use a bit of vasaline to lubricate any moving parts

 

Vasaline the 0 rings - really helps. Save money on the kits sold with spares by buying in latex O rings. Latex last longer.

 

Russ

[C.J]

http://www.cooper-pegler.com/articles/cooperpegler/g/846300_g_9.png

 

A picture paints a thousand words

[dogman]

Thanks for the advice folks, I've found the spares that came with it, will ky jelly work in liou of of vaseline ?!!!

 

Rob

[dogman]

Finaly got round to doing this today, it was a small rubber washer that had come adrift, having pulled over a small metal washer & screw. Now re-attached using a larger washer, & its back working again.

 

Thanks for the advice.

 

Rob