028 AV Wood Boss oil pump drive gear removal help

[killermrob83]

My dad bought this saw new sometime back in the 80's if my memory serves me correctly. The badge reads as follows:
STIHL
WOOD BOSS
028 AV
electronic
quickstop

From what I have been able to find through searching, the model is an AVSEQ. I want to replace the drum sprocket and needle bearing. I understand that these parts will probably come in a kit form which will include the e-clip, snap ring, washer, etc. Does anyone have an updated part number for this kit or separate pn's for the parts if not available in kit form? Also, how about pn's for a rim sprocket configuration.
Thank you for your time and consideration.
Rob

 

[D'Animal]

1118 007 1003 is the Rim Kit
9512 933 2370 is the bearing part number

Both are available

 

[killermrob83]

Thank you for the reply, D'Animal. From searching previous threads, I knew that you would be the one with the answer. Kudos to you, and thanks for being out there.
I do apologize for the error that I made in posting the incorrect thread title. I had been having trouble removing the oil pump drive gear, but wound up finding the owner's manual which had instructions for doing so. In case this may help anyone in the future, this gear does not just simply pull off of the pump shaft. The gear must be rotated in a clockwise direction while pulling up on it (threaded into the pump shaft). The authorized STIHL repair tech that I took it to didn't know how to get it off, either. Thanks again for your assistance. Rob

PS If I can ever find my camera, I'll post some pics for future use (not sure when I will be allowed to do that as I am a noobie).

 

[killermrob83]

Went to the authorized STIHL repair tech. He tells me that he does not see the 1118 007 1003 as being applicable, but rather
1005 for 0.325" chain pitch
1007 for 0.375"
Is it possible that 1003 is incorrect, or does this guy not know what he is talking about?
Also, I would like to obtain a complete rebuild kit (crank bearings and seals, rings, etc.) before all of the parts become obsolete, for future use.
Would you happen to have a part number for a rebuild kit, if such a thing exists?
This is my Dad's saw and one day will be mine. I would rather keep it, for nostalgic reasons, than buy a new saw.
I mean no offense in questioning the part number.
Thank you.
Rob

 

[killermrob83]

Went back to the shop. Tech finally figured out that 1003 is good part number for the rim drive; right below the sprocket drum. I apologize for questioning your expertise, D'Animal.

At this point, I have placed an order for the sprocket drum kit and cage bearing, versus going with the rim sprocket, which will save
me $15 (44.95 vs. 59.95). Are there any advantages to the rim sprocket other than that the rim portion can be replaced without removing the inner cover and the entire drum? I asked the tech the same question and he told me "no," although he likes to use them because they look better. (!?) I told that that didn't matter to me because it isn't looks that I'm after, but functionality/reliability.

I'm also looking at a whole slew of other parts for a future rebuild, should I ever need to do so. I figure that if I never use them, someone else will always be interested, especially once they become obsolete. The parts that were suggested are:

crankcase gasket
piston rings
connecting rod bearing
(2) crankshaft bearings
(2) crankshaft end seals
wrist pin and clips
piston
top end gasket

Was told that all of this would total about $160. He also said that it's a good thing that I don't want a crankshaft because they cost $260.
I also understand that there is not an engine rebuild kit for the particular saw; just to purchase all of desired parts separately. Does this info sound correct? Also, are these oil pumps reliable, or should I get one of those as well? Would be a great help to me if I could get my hands on some part numbers.

Once again, D'Animal, I apologize for questioning the info that you previously provided. I won't do it again.
TY Rob

 

[killermrob83]

The $160 for the parts may not have included the piston, because I remember him telling me that the cost of the piston depended upon which one came with it.

 

[D'Animal]

The advantage of running the rim type sprocket:

More cost effective to replace (cheaper)

When you throw a chain, it does not bugger up the chain drivers nearly as bad as the spur style.

Easier to change.

 

[killermrob83]

Thank you again. I'll change the order for the rim type.