044/046 oiler modified illustrated

[redfin]

Mike Lee told me how to do this and there have been pictures here and there. I did two of these tonight so I figured I would take pics and document.

First knock out the roll pin holding the control bolt in place.

After the pin is out latch onto the bolt and remove, it can be a bit of a bear but it will come.

Remove the bolt, piston with spring and washers and this is what you have.

Once you have the bolt out its clear how the piston rides back and forth against the concentric cam of the bolt. I remove roughly 1mm from each lobe of the cam. I used my foredom with a few discs stacked up. On the left is an unmodified bolt and on the right one that is ready.

I also take 1mm out of the pocket on the piston.

 

[redfin]

The 044 oiler allows to enlarge from a 5/64 hole in the trough to a 3/32.

The 046 is captured but it looks as though ther is a plug that may or may not be able to remove to drill out the passage.



Fairly simple mod that doesn't take very long.

 

[blsnelling]

The 046 pump can be upgraded with a factory control bolt and piston, although not real cheap. There are no upgrade parts for the 044 pump. Modding them such as you are is the only way.

 

[treeslayer2003]

i also made the ramp steeper on the plunger for more travel. i didn't know about drilling out the body.

 

[Deets066]

Will similar treatment work on most saws

 

[redfin]

Will similar treatment work on most saws

Can't answer Deets, I've only been into the 1128s. Hopefully someone else can chime in on this one.

 

[Poleman]

I think it will work on most saws as they are similar. Did something like this on a Dolmar other that the groove in the piston....had really thought about it but that confirms it. Steepened the ramp on the adjuster. It will be interesting to see how it will wear as I think it was nylon and not metal like the Stihls.

Good jod redfin!!!!! Nice post with detailed pictures!!

 

[rmh3481]

Good job and pics.

 

[redfin]

Has anyone removed or drilled the plug on the 046? I was thinking of drilling it and putting back a setscrew.

 

[blsnelling]

I've only replaced the piston and control bolt. That's all it should needed.

 

[Mastermind]

Great thread John.

Thanks.

 

[Tractorsaw1]

I didn't know about drilling the hole to 3/32", thanks for sharing. I don't have mine modded to the point I need to turn it down yet, but maybe with a few more enhancements I will

 

[treeslayer2003]

turn it down? no way lol. i cut the ramp pretty steep on the 064, it oils a 32 nice.

 

[redfin]

Mo oil is Mo betta.

 

[strtspdlx]

Out of curiosity why take anything off the bolt cam? Why not just file away the stop on the pump body so when it's turned the highest point of the cam is facing the face of the piston ramp?


Regards-Carlo

 

[redfin]

If you look closely at the bolt the lobes are farthest away from center when its turned against the stop.

 

[strtspdlx]

I don't have mine apart right now. When I did it. The highest point if the cam. Which yields the most lift of the piston was facing slightly away from the piston. So I ground the stop a little to make the highest point of the cam contact the ramp of the piston. I also ground the low point of the ramp for more travel. I'm trying to understand why you ground the low points and I don't understand what purpose that serves.


Regards-Carlo

 

[mdavlee]

On the bolt or piston?

 

[mdavlee]

Will similar treatment work on most saws

Yes most of them. Just have to figure out how to get more stroke out of the pump.

 

[strtspdlx]

On the bolt or piston?

Who is this directed toward?


Regards-Carlo