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Mcgyver
05-20-2012, 04:00 PM
I got sick up and fed with my gangly leaky extra large giant oil gun. I'd picked up a new compact model recently and had an idea for a quick and dirty conversion. No fancy spring loaded stuff, just one that didn't leak....it would have to be at least semi inverted to prime the pump.

http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1312-large.jpg

plan is simple....Start with a simple grease gun. put the spring loaded devise aside and turn a plug for the bottom

http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1316-large.jpg

I had a 15/16 16 tpi tap - about the right proportions for an oil filling hole
http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1319-large.jpg

turn and thread a plug - here I'm making a undercut with a round tool to hold an O ring

http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1323-large.jpg

Mcgyver
05-20-2012, 04:01 PM
Use the first part as a mandrel and with some large washers as spacers, turn down and knurl the outside. I usually put a small chamfer on either side of a knurl to finish it - threading tool is handy for this

http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1330-large.jpg

http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1332-large.jpg

http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1335-large.jpg

Mcgyver
05-20-2012, 04:02 PM
some cylindrical retaining compound holds the AL plug in place. It works quite well.


http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1321-large.jpg

http://i785.photobucket.com/albums/yy132/michael01000/oil%20gun/DSC_1336-large.jpg

shawnspeed
05-20-2012, 04:38 PM
that looks more like a grease gun...made for tube grease.. not an oil gun...I would imagine 40 W oil coming out of that very easily...Shawn

Mcgyver
05-20-2012, 05:20 PM
yes it's a grease gun, thats what I wrote :confused: , where would you image oil coming out of it?

millwrong
05-20-2012, 05:29 PM
I have done the same conversion, except it doesn't have the same level of detail as yours. It has held oil just fine. I'm admiring yours as a significantly better version than mine. Wanna trade??:p

MotorradMike
05-20-2012, 05:59 PM
yes it's a grease gun, thats what I wrote :confused: , where would you image oil coming out of it?

Actually you wrote 'oil gun' I don't get it either.

firbikrhd1
05-20-2012, 06:13 PM
Very nice McGyver! Essentially what you've made is an inexpensive version of the manual hydraulic power pack for a Porta Power, without the bypass valve.

Mcgyver
05-20-2012, 06:13 PM
Actually you wrote 'oil gun' I don't get it either.

yeah its a chicken and egg thing :D


plan is simple....Start with a simple grease gun.

ok, sorry it wasn't clear, complete context so everyone's on the same page :) ....on machine tools there are often zerks (grease fittings) that are NOT meant for grease, they are for oil. You can't walk in to Canadian tire or just about anywhere else and convenient and cheaply get an oil gun that will shoot oil into these fittings. Maybe they're out there somewhere, but they're not common....meanwhile your machine needs to be oiled.

So what guys do, what I illustrated in this thread, was take a common cheapo grease gun and convert it into an oil gun.

If done like shown above, you have something to put the oil in, that won't leak, is easy to refill, will fit a zerk, and inject the oil in under pressure. Started as a grease gun....turned it into an oil gun :)

lazlo
05-20-2012, 07:17 PM
So what guys do, what I illustrated in this thread, was take a common cheapo grease gun and convert it into an oil gun.

Good write-up here:

Building a high-pressure oil gun from a lever action grease gun

Most metal working machines require oil to be forced through channels for oiling the ways and other parts of the machine. On many of the older-model machines these channels will be fitted with standard grease fittings, but you should not use grease on them. A special type of oilier must be used, one that can generate higher pressures than a standard pump-type oilier. It must also be equipped to pump oil through a grease fitting. I was able to build a high-pressure oilier by modifying a lever action grease gun with only a minimal effort and additional parts. The total cost was about $10. The oil gun works very well and does not leak.

http://www.metalwebnews.com/howto/oilgun/gunconvert.html

TGTool
05-20-2012, 08:09 PM
This is my rifle.

This is my gun.

Fighting about nomenclature

Sure is such fun.

:D

lynnl
05-21-2012, 02:13 PM
What type (viscosity) oil is normally intended to be used with such fittings as those?

I assume it's thicker than your normal, garden variety machine oil. Is it more like the lower unit lube for outboard marine motors?

Mcgyver
05-21-2012, 07:49 PM
I use 20 weight way oil. Unit is stored upright so i'm not pressing my luck, but it didn't leak when being used

I thought this sort of thing was much more common than it seems it is....how do you guys oil your machines if not for something like this? (at least those with zerks)

lazlo
05-21-2012, 07:56 PM
how do you guys oil your machines if not for something like this? (at least those with zerks)

I bought the $40 high-pressure oil gun at McMaster :p

MrFluffy
05-21-2012, 09:35 PM
I did the same but turned a solid plug for the end and just unscrew the cartridge body from the head to refill.
Yours has more craftsmanship and refinement about it mind :)

Don Young
05-22-2012, 12:05 AM
I did the same but turned a solid plug for the end and just unscrew the cartridge body from the head to refill.
Yours has more craftsmanship and refinement about it mind :)

My method, another step down: Using one of the small size guns, remove the plunger and associated parts from the end cap. Lay a small disc over the opening and solder. Done. No machining required so I guess it is OT.