Posted by Dieseltech on March 09, 2012 at 16:43:14 from (199.16.223.2):
In Reply to: 806 died posted by c-man on March 09, 2012 at 09:54:59:
Anytime an engine starts and dies with a Roosa Master pump it is usually governor weight retainer flex ring failure, small bits will plug return fitting, when housing pressure reaches transfer pressure plungers will stop moving and shut engine down. Easy check is to loosten timing cover to relieve pressure, if speed picks up pump needs repaired. Only knock out return fitting ball to get back to the shop. If not fixed correctly a simple reseal will turn into a junked pump when retainer rivets break off, wedge between rotor and cam, seize hydraulic head and break the drive shaft. Have seen this happen too many times in years of diesel injection repair when a return fitting is removed or modified and owner thinks it is good forever, then has to get a $250 shaft and $500 head assembly because he kept running it and locked it up. Just hope this helps someone in the future.
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