lv test

S

supertrucker67

Recruit
Joined
Sep 18, 2005
Messages
5
how do i do a pressure test on lower unit of j-100 esl to find leaks ,leaking water in it . always goes back to forward when i put it in the water,but runs fine in the yard with garden hose ,i all ready changed the fill@vent o rings
 
Joe Reeves

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: lv test

Drain unit. Insert and tighten the lower drain plug screw, leave the top oil level screw hole open.<br /><br />Apply 7 to 12 pounds of pressurized air to that hole and look and listen for the leakage area.<br /><br />Use a rag or rubber grommet of some kind to help seal the air nozzle to the oil level hole.
 
A

alden135

Lieutenant Commander
Joined
Sep 1, 2004
Messages
1,770
Re: lv test

Someone once posted that they carved down a tire valve stem to fit snug in the vent hole. I can't remember who it was though.
 
G

Goodoleboy

Chief Petty Officer
Joined
Nov 20, 2003
Messages
555
Re: lv test

The easy way to (carve down) a valve stem is to grind it down on a pedestal grinder. Just grind down to same dia. as fill screw 3/8 I think, My remeberer aint what she used to be.<br /><br />The threds inside the hole will cut into rubber and make a seal. ( may not make a 100% seal no matter it will apply air pressure equally)<br /><br />Buy pressure gage from auto parts place that reads 0 to 15 or so pounds and then take a bycyle tire pump and plumb in into the hose. <br /><br />Then pumper up to 10 pounds or so and look for air bubbles in tub of water.<br /><br />Good luck!
 
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