How to Video: Crank seal replacment, Pressure testing, Vacuum testing

[Streblerm]

Anyone looked at one of the Harbor Freight Seal Pullers? At $19.99, this seems to be a little more in my budget. I've been using a old screwdriver with a notch, but I'd like to find something a little bit more consistent.

Looking at that tool, I would guess that the jaws are going to be to thick to get between the seal and the crank. Maybe something more like this one, http://www.harborfreight.com/cpi/cta/displayitem.taf?Itemnumber=95987 at twice the price.

If they have it in the store, sooner or later it will be on sale. The slide hammer part is also going to be a PITA vs the tension puller from Stihl.

 

[litefoot]

I love these videos. Another thread to add to my book marks. As always, refer to the Stihl shop manual for proper vacuum and pressure levels and time durations.

Has anyone ever seen a decomp valve get pulled in (to the decompression position) during a vacuum test? I think I've heard that the decomp should be replaced with a bolt, but not sure if that's absolutely necessary.

 

[TxAggie]

Saw it and wonder if it would work? For $20.00 may pick one up and see. I've pi#$ed away more money than this on parts, etc.
Bob

Went by and the arms are WAY too big. The guy at the store recommended that I take two dental picks and tape them together. I think that I'll just keep using the screw driver and think happy thoughts.

 

[Maldeney]

Valuable information!

 

[blsnelling]

Valuable information!

Thanks

 

[pastryguyhawaii]

Very nice!

This is wny I spend 99% of my time here reading... and only 1% posting.

Great stuff!

I agree. Excellent videos!

 

[ropensaddle]

Very nice work Brad and I am sure you checked bearings for wear too. I always check them to make sure slop is not what wore the seals.

 

[redunshee]

Went by and the arms are WAY too big. The guy at the store recommended that I take two dental picks and tape them together. I think that I'll just keep using the screw driver and think happy thoughts.

Looking at picture I think you're right. Did you go to the Richardson store?

 

[blsnelling]

Very nice work Brad and I am sure you checked bearings for wear too. I always check them to make sure slop is not what wore the seals.

Yes I did. You guys are pointing a lot of the good little tid bits. Keep them coming.

 

[sefh3]

Nice work again Brad,
If I keep posting about 4 stroking will you post us a video of that. It would help alot of forks here. Keep up the great work!!!!!!!

 

[blsnelling]

Nice work again Brad,
If I keep posting about 4 stroking will you post us a video of that. It would help alot of forks here. Keep up the great work!!!!!!!

There's an example of that near the beginning of the video with my 440 from Saturday. You can hear me peak it out and then bring it back down.

 

[mtfallsmikey]

Very good Brad! I appreciate all who share their knowledge.

Is 10"/vacuum all that is required?....A friend wanted to borrow my refrigeration vacuum pump to try on his saw....I'm afraid it would be too much, it will draw an A.C. system down to 30" in no time...

 

[blsnelling]

Is 10"/vacuum all that is required?....A friend wanted to borrow my refrigeration vacuum pump to try on his saw....I'm afraid it would be too much, it will draw an A.C. system down to 30" in no time...

.5 bar or 7.25 PSI for 20 seconds is all that's required.

 

[stihlboy]

Nice work again Brad,
If I keep posting about 4 stroking will you post us a video of that. It would help alot of forks here. Keep up the great work!!!!!!!

im not sure i understand how it helps a utencil

 

[blsnelling]

I decided to make the tuning video a seperate thread. Make all your tuning comments there. LINK

 

[Termite]

Thank You, for taking the time to record and post your work. I wish I had the knowledge to do video.
When I worked on car engines I would use crocus cloth to polish the harmonic balancer. The results were no oil weapage after many miles.

 

[sefh3]

im not sure i understand how it helps a utencil

Sorry hard to type on these Blackberries. How about folks

 

[ropensaddle]

I decided to make the tuning video a seperate thread. Make all your tuning comments there. LINK

Good sounds my friend good sounds lol

 

[Arrowhead]

Thanks Brad for doing this thread. I have a Pioneer P51 that was giving me fits. I don't have my Mityvac yet, so I decided to just pressure test. I definitly found the problem. There is a major air leak behind the reed cage and the seal on the flywheel side. I will order the parts in the morning. I posted some pics of the plates I made and the bubbles (windex) there not to clear but trust me it looked like the saw in the video you made.

 

[blsnelling]

Glad you found your problem