best practice for cleaning mixture needle packing nut material

[GUY SCHMIDT]

I’m struggling with black stubborn packing nut material in a carb I’m rebuilding. Trying to mechanically remove the old packing

and not having much luck. Then I realized there must be some experienced lads out there that might share a tried and true method

or particular solvent that dissolves these things. I look forward to your comments…..Guy Schmidt

[Bob Wight]

When rebuilding my carbs, I usually either soak them in a gallon bucket of Berryman’s Chem-Dip carb cleaner or soak them in hot water in a kitchen crock-pot.   Either method seems to soften the packing material so you can get them out with a small pick tool.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

2 users thanked author for this post.

GUY SCHMIDT, Tubs

[fleetwin]

Very interesting topic indeed.  I oftentimes skip trying to pull out the old packing for fear of introducing debris into the mixing pocket, usually just add fresh packing over the old stuff…   Will definitely try Bob’s suggestion during my next hot ultrasonic cleaning though

1 user thanked author for this post.

GUY SCHMIDT

[GUY SCHMIDT]

Great Bob, I’m going to try one or both of those techniques today!

[GUY SCHMIDT]

Hey Fleetwin, thank you also. Since my carb is off the engine I’m going with replacement. But, under other

situations I might try your suggestion.

[Bob Wight]

fleetwin wrote:

Very interesting topic indeed.  I oftentimes skip trying to pull out the old packing for fear of introducing debris into the mixing pocket, usually just add fresh packing over the old stuff…   Will definitely try Bob’s suggestion during my next hot ultrasonic cleaning though

A hot ultrasonic soak would likely be the best solution.  I don’t have an ultrasonic so my hot crock-pot method was my alternative!

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Author]

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