Riko WP36 chain lube problem

[timberonabike]

Of recent we have been having issues with maintaining chain tension on our PTO driven WP36, we have traced this back (possibly) to a lack of bar lubrication as we found a split in the pipe feeding from the tank. Having cut out the split and rejoined the hose as well as clearing out the slot on the bar and anywhere else we could find, we still aren't getting any oil to the bar.

Ideas?

 

No apparent direct pump like on a chainsaw, so guessing the little grey jobbies in the line are vacuum/scavenger type pumps?

[Mortimer Firewood]

Of recent we have been having issues with maintaining chain tension on our PTO driven WP36, we have traced this back (possibly) to a lack of bar lubrication as we found a split in the pipe feeding from the tank. Having cut out the split and rejoined the hose as well as clearing out the slot on the bar and anywhere else we could find, we still aren't getting any oil to the bar.

Ideas?

 

No apparent direct pump like on a chainsaw, so guessing the little grey jobbies in the line are vacuum/scavenger type pumps?

 

Have you removed the bar and chain and operated it to see if there is any oil at all coming through?

[timberonabike]

Had the bar and chain off and run the machine in hope of getting some flow, but not a single drop, not even moved the air bubbles - siphoned those out and still now oil at the bar end of things.

 

Manual just has a half page on a generic flow adjuster that we can't find.

[Mortimer Firewood]

Ring Jim at reko he was very helpful when we had some problems with ours.

[steve@crown]

Hi, when I first purchased mine I checked everything...found that the pipe that feeds the chain goes under the machine. At the tank end it was pinched against the chassis with cable ties/other pipes...hope this helps...???

[smiles]

I could be wrong - mines only a WP30,but I thought that the chain oil was pumped by the small cylinder by the hydraulic pump,set the stroke of the cylinder to govern the amount of oil dosed each time.

[JimE]

Hi,

 

the WP36 pumps oil every time the lever is pulled to bring the bar down through the timber.

The pipe that feeds the lube oil to the bar is the little blue pipe just above the chainsaw motor on the bar mounting.

I do not know the age of your machine so I dont know which system yours has (there are 2 types) but regardless of the systems try the following

 

first check there are no kinks in the pipework or anything that would obstruct the flow. You can disconnect the pipes to make sure there is a good flow of oil out the fitting at the tank.

 

with the machine off, pull the operating lever towards you and release 20 times. So as if you were cutting a bit of wood. Its the motion of pulling the bar down that pumps the oil, not the chain turning.

There should be a flow of oil running down the bar.

Doing that would normally prime it.

 

If it isnt, try putting a bit of pressure on the tank, ie if you have an airline available put a bit of rag the filler hole and apply a bit of air pressure as you pull the lever.

 

There are other things that it could be but try that first and come back to me.

 

Jim

Edited December 12, 2014 by JimE

[timberonabike]

Thanks Steve, we followed the pipe back, original split was due to overtight zip-ties, rest of the line is loose, free and dry.

 

Cheers Jim,

Stuck in the office today, but will give those a try on Monday.

Got our machine new this January.

 

Tim

[JimE]

No worries Tim. Give me a call on Monday if you are struggling

01420 487300

Jim

[timberonabike]

A quick thanks to Jim at Riko.

Very helpful, helped troubleshoot over the phone and identify the faulty part (pump valve) and got it out next day. Machine is back up and running again.

 

Tim