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Old 05-08-2020, 06:32 PM
Usaguy Usaguy is offline
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Join Date: Aug 2019
Posts: 949
Quote:
Originally Posted by yuke View Post
... can I purchase a fitting to put some air in the cyl...
Did you check your compression by just pressing the rubber seal against an opening or do you have an adapter already?

pelicanparts sells one for $24 but it looks like you may have to remove the schrader valve from it:


https://www.pelicanparts.com/Mercedes-Benz/catalog/ShopCart/TOOL/POR_TOOL_MERCED_pg79.htm

Quote:
Originally Posted by moon161 View Post
Follow the instructions with the HF leakdown by the letter, including the part about max input pressure (?30 or 40 psi on the one I got?, anyways, you can break it if supply pressure is too high.

OTC tolls makes the best leak-down tester. Most others are low pressure only and you have to set them up.
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