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Unread 03-20-05, 04:32 AM
Kevin McDonnell Kevin McDonnell is offline
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Join Date: Jan 2003
Location: Livermore, CA (LVK)
Posts: 43
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Skyking,

This version of 337 is a 1975 T337G.

Dave,

I'm no expert but here's my 2 cents...

Normally the gear pump will continue to run until a certain pressure is achieved (I think it's 1500 PSI). If the pump runs continuously, then either you're not developing 1500 PSI - or the switch is faulty.

Using a ground mule (external pump & pressure gage), the shop can test & adjust the pressure switch so that it trips at the correct pressure. Maybe the switch is sticky (explaining the intermittent behavior) and can be cleaned up.

The up-light is a function of some micro switches that sense the gear is in the up (or down) position, one on each wheel. If these are not rigged correctly, then the gear could be up - but the light won't come on.

I'm not sure if the inability to achieve 1500 PSI will also cause the up-light to not illuminate. I don't have my service manual with me at the moment so I don’t know if there’s a connection between the two.
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