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MG TD TF 1500 - Oil pump prime question

I have a late model oil pump with priming plug. Should I still pack it with Vaseline or can I just prime before starting (hopefully statrting!)
Also, in a John Twist video he recommends a smear of silicone between the cap and body. I have read differently. Any other advice/tricks on assembly would be appreciated.
My tolerances are all good and I test fit to check that everything rotates smoothly.
Thanks-Mark
Mark Butler

Mark, I just kept filling the pump with oil and cranking the engine with the spark plugs out until I got pressure out the gauge line, which I left open to visibly see the oil coming through. My problem was I have the old style, original filter and it took some time to get it filled, what a pain. It might be possible to pressure feed the oil and eliminate cranking the engine so much. My original filter is a Tecalamit, which I have acquired another canister with a near perfect name tag on it. The Tecalamit has a riveted on metal id tag. PJ
Paul S Jennings

I modified a garden sprayer with a 'T' fitting on the end of the hose that used to have a sprayer wand on it. I interpose the 'T' in place of the fitting between the oil line from the block to the oil pressure gauge, put 4 quarts of oil in the sprayer and pump up the pressure (I later modified the sprayer so I can attach my air compressor to it). I can almost immediately see pressure on the gauge and after all the oil in the sprayer is forced into the engine. After switching back to the original adapter from the flexible oil line from the block to the gauge, I start the engine and have instant oil pressure.

A trick that Dave Braun uses is to fill the sump, put the transmission in gear with one rear wheel off the ground, then using the wheel, turn it such that the engine is turning backwards. He says that it fills the pump nearly instantly. Cheers - Dave
D W DuBois

Thanks guys. Any opinion on using some silicon when fitting the cap?
Mark Butler

I had horrendous problem priming my oil pump until I read a thread on this site. Don't remember who the author was but if he is ever in Scotland there is a McCallan malt waiting for him. The advice was block the breather tube exiting from the tappet cover and give the oil dip stick tube a few blasts with an air gun. Worked immediately for me.



Jan T
J Targosz

Mark...no silicone!
Gene Gillam

Jan,

I'll take you up on that someday!

Jan is right. Lightly stuff a little paper towel in the breather and apply a little bit of air pressure to the dipstick tube whilst having someone crank it with spark plugs removed. It only takes a little bit of pressure to encourage the oil to move up into the pump.

If yo apply too much pressure the paper towel will act as a relief. Try not to pop it out.

Jim
JE Carroll

Mark I used a six inch long by one inch diameter syringe that fitted tightly into the filler hole and squirted about four loads of oil in, worked first time.
CJ Harvey

It works because it takes 0.354 psi to raise a column of oil 1 foot.

I don't think it's even one foot from the oil level to the pump gears and the the pump is creating a low pressure in the pickup, so the actual air pressure needed in the sump is very low.
JE Carroll

This thread was discussed between 14/06/2014 and 15/06/2014

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