Stihl 029 Cover Washer

[dennis]

I have a Stihl 029 Super that I purchased new about 25 years ago. Serial # D 244006667. It stopped oiling, so I took the clutch off to check the plastic worm gear (which is worn and torn up.) The illustrated parts list for this saw shows a cover washer (part 1127 162 1000) that goes behind the clutch and over the worm gear. My saw does not have one. I spoke with a local Stihl dealer, and he said it probably did not come with one, and that if I put one on, it may interfere with the clutch. I have two questions...

1. Has anyone seen a Stihl 029 that did not have a cover washer, and if I put one on, could it interfere with clutch fitment?

2. Is there any way to test the oil pump with the worm gear off?

[bgsengine]

1. Has anyone seen a Stihl 029 that did not have a cover washer, and if I put one on, could it interfere with clutch fitment?

depends on the clutch, and I believe the serial number - I think they were not used in older saws like yours, and adding one would cause more problems than it solves

2. Is there any way to test the oil pump with the worm gear off?

not without ability to move your finger really damn fast Have to be able to reach in and spin the worm drive manually (though it does not need to be Fast-FAST, but definitely fast enough to keep oil from draining back downhill.) I have tested them manually out of the saw by holding the inlet and outlet ends of pump in a little pan of oil and spin the worm drive a bit, then take pump out and spin some more (after figuring out which direction it normally spins when saw is running) - as they are usually pretty simple designs, if the pump spins freely and nothing's broke (and the steel worm drive isn't worn out too) then they'll usually be pumping - very little to go wrong with them. Most common issue was rust or corrosion or dirt getting into the aluminum body and binding up the shaft, in which case a new pump was put in after fixing whatever allowed the corrosion or dirt - Water in oil, dirty abrasive oil (used motor oil was common) and so on. But if the pump itself spun freely a new gear usually solved it (and a good cleaning & maintenance because oiler drive gear failure was rather common on poorly maintained saws due to heat problems)

That's just my recollections of it. KE4 may have better advice.

[dennis]

Thanks for the information and your recollection. It is in line with what the dealer told me, bgsengine.

[KE4AVB]

I actually never worked a 029 for a problem in the area of the clutch. Now the IPL does shows two different clutches being used on the 029 with different retainers. One looks to have wings that would protected the worn gear and the driver wire.

I look over the service manual and it does cover the assembly on the saw in the area of the clutch other than assembly of the clutch itself and the installation of the clutch itself. Nothing on the shield washer.