Yes. The push rod tubes are a simple design and can start to leak. With the swaging tool these leaks can usually be stopped. I did it myself and it really works. http://www.aircraft-tool.com/shop/detail.aspx?PRODUCT_ID=4915A
The spring loaded tubes on the other hand are a later design that is common to the bigger bore continentals. It is the better design. But I would only implement them when rebuilding an engine. Normally, ones the tubes don't leak they stay put unless a mechanic bends them with a tool or someone uses them to pull them up themselves on the engine. That can happen during maintenance but can be corrected with the tool above. Another positive of being able to remove the pushrod tubes separately is the better access to the exhaust pipes, making the removal much easier if there is a need for that. Agreed, the spring loaded tubes are better for servicing the engine, but it comes at a price though. Hartmut From: Glenn Putnam Sent: Monday, May 10, 2010 8:35 PM To: [email protected] Subject: Re: [ercoupe-tech] Pushrod tube leak The old pushrod housings leaked at the cyl end the new housings cure this problem Glenn Putnam On May 10, 2010, at 8:45 AM, Hartmut Beil wrote: The only advantage of the spring loaded tubes is a much easier access to the lifter inserts . But it is very rare that these need servicing. Hartmut From: Jerry Ward Sent: Monday, May 10, 2010 1:34 PM To: [email protected] Cc: [email protected] Subject: Re: [ercoupe-tech] Pushrod tube leak And why is this better than just replacing the rubber seals around the tubes for about $3 bucks each?... Jerry May 10, 2010 06:31:25 AM, [email protected] wrote: > > For those folks like me planning to stop an oil leak at the pushrod tube, Aircraft >Spruce now sells the Real Gasket solution for $289.95 which is about $60-70 less >than buying it from the Real Gasket folks. P/N is 08-04444 for the 4-cylinder kit >which I ordered Friday. > > Mac McMahon > N94184 > VKX Friendly, MD > >
