Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: bloodontheice on October 18, 2014, 10:17:20 am

Title: Husky 281 Oiler Issues
Post by: bloodontheice on October 18, 2014, 10:17:20 am
I've got a Husky 281 one that I'm having trouble with the oiler.
I replaced the plastic oiler gear part# 503557501 twice because it gets striped out by the pump.
Thinking it was possibly the pump gear I also replaced that and it still striped the plastic gear.
I do have the spacer washer between the gear and seal.

I'm not sure where to go from here.

Here's what I'm working with.

(http://i6.photobucket.com/albums/y244/CaleSigas/451_zps99cd2376.jpg) (http://s6.photobucket.com/user/CaleSigas/media/451_zps99cd2376.jpg.html)

(http://i6.photobucket.com/albums/y244/CaleSigas/455_zps338b959e.jpg) (http://s6.photobucket.com/user/CaleSigas/media/455_zps338b959e.jpg.html)

(http://i6.photobucket.com/albums/y244/CaleSigas/457_zpsce915f65.jpg) (http://s6.photobucket.com/user/CaleSigas/media/457_zpsce915f65.jpg.html)

(http://i6.photobucket.com/albums/y244/CaleSigas/460_zpsc7e1e06a.jpg) (http://s6.photobucket.com/user/CaleSigas/media/460_zpsc7e1e06a.jpg.html)
Title: Re: Husky 281 Oiler Issues
Post by: jmester on October 18, 2014, 05:25:33 pm
Does the pump shaft spin easily by hand?
Title: Re: Husky 281 Oiler Issues
Post by: aclarke on October 18, 2014, 08:02:18 pm
Should turn with finger tips pressure
Title: Re: Husky 281 Oiler Issues
Post by: 660magnum on October 18, 2014, 08:04:44 pm
Like almost no resistance to be turned with you fingers
Title: Re: Husky 281 Oiler Issues
Post by: jmester on October 18, 2014, 08:19:40 pm
Also make sure the pump splines mesh up with the driver splines.
Title: Re: Husky 281 Oiler Issues
Post by: bloodontheice on October 18, 2014, 08:52:24 pm
Both oil pumps turned freely with about the same amount of minimal resistance.
It seemed like the gear in the pump never meshed properly with the plastic worm gear.
Title: Re: Husky 281 Oiler Issues
Post by: 660magnum on October 18, 2014, 08:55:19 pm
". . . the gear in the pump never meshed properly with the plastic worm gear."

This could very well be the problem?
Title: Re: Husky 281 Oiler Issues
Post by: bloodontheice on October 18, 2014, 09:12:30 pm
I was using two brand new worm gears on two different oil pumps and got the same result.
Title: Re: Husky 281 Oiler Issues
Post by: aclarke on October 18, 2014, 09:38:19 pm
Same pump body or different?
Title: Re: Husky 281 Oiler Issues
Post by: aclarke on October 18, 2014, 09:48:34 pm
Gear engagement will be tightest when the axis is centered on both  gears. If for some reason the mesh is way high or low the contact will be less and could wear the plastic gear quickly. Make sure somethings not causing the pressed non gear to seat or the pump housing...
Title: Re: Husky 281 Oiler Issues
Post by: jmester on October 18, 2014, 10:29:15 pm
Could the washer that covers the seal be worn some and letting the gear drop down to far? Maybe the washer has a flat side and the other a little convex to hold the gear at the right depth in the pump housing. Also is the crank seal at the right depth in the pump housing