how to pressure test lower drive leg

[pete44]

87 Alpha 1..oil leaking out "weep hole"...how to pressure test with lower leg removed....Thanks,Pete

 

[Gary H NC]

Re: how to pressure test lower drive leg

It needs to be pressure tested and vacuum tested.
With gear lube drained pressurize to 12 to 15 psi.
Should hold for several hours.

 

[wire2]

Re: how to pressure test lower drive leg

I made a fitting to do that, using a 3/8" x ?" long allen bolt, and an O ring. I drilled & tapped the middle of the bolt to 10-32, threaded in a hose barb fitting and connected to a small hand pump. Drain the oil, place it in the lower drain hole, put the upper plug in and test.
Don't apply too much pressure from a compressed air source.

There's an oil passage between the upper & lower that you'll have to block somehow to pressurize the lower unit only.

 

[KaGee]

Re: how to pressure test lower drive leg

This is all you need:
A bicycle pump.
A "T" fitting.
An inexpensive fuel pressure/vacuum gauge.
The fitting robbed from a oil fill kit.
Some 3/8ths hose and clamps.