That’s a very good point, I’ll be make sure to wear a mask when I scrape it off, thanks for the heads up better to be safe than sorry
- Thread starter Sam0117
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That’s a very good point, I’ll be make sure to wear a mask when I scrape it off, thanks for the heads up better to be safe than sorry
yeah I think your right, once I get the other side apart I’ll weight up if it’s worth having the crank ends machines and bore the housing out and put a bronze bush in maybe, the puppy is still fully stuck on so will be attempting that tomorrow with some heat assistance
Cuthy246
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Better off soaking it in WD40, stops the fibres getting airborne in the first place.
Submariner1
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Deep metallic Blue
Quick update.
the pulley finally came off with abit of heat to aid it, the pulley shaft is tapered so once it cracked it flew off, good thing I caught it.
so I stripped the rest of the compressor down ready to start the hours of cleaning, I've decided to powder coat the compressor and just paint the motor and tank. Looking at the piston and crank assembly there isn't any play what so ever so I'm gonna give it a good clean and degrease and leave it as is.
Now this is what threw me, no piston rings............im hoping someone can enlighten me abit to this as even old fridge pumps had piston rings from what I can find, the only other thing I can think of is maybe its a old vacuum pump? anyway the oil is obviously adding in the pistons sealing and glad I'm doing this as the oil is quite bad. there is a slight hole from the inlet of the pump which goes to the sump/body of the compressor which i assume is either to get the oil to the pistons or just aid in the lubrication.
I've been in contact with J&e Hall and had no luck what so ever with them just got told they have no information on this pump as its too old
But being old is what makes me want to do this project justice, I mean come on you don't see oil ways like on the crank don't like that anymore lol simplicity is key after all lol
So I've got a fair bit of work on my hands with cleaning and making new gaskets and other things so please bear with me, the metalic dark blue is defiantly being considered.
hope your all well and safe
Sam
the pulley finally came off with abit of heat to aid it, the pulley shaft is tapered so once it cracked it flew off, good thing I caught it.
so I stripped the rest of the compressor down ready to start the hours of cleaning, I've decided to powder coat the compressor and just paint the motor and tank. Looking at the piston and crank assembly there isn't any play what so ever so I'm gonna give it a good clean and degrease and leave it as is.
Now this is what threw me, no piston rings............im hoping someone can enlighten me abit to this as even old fridge pumps had piston rings from what I can find, the only other thing I can think of is maybe its a old vacuum pump? anyway the oil is obviously adding in the pistons sealing and glad I'm doing this as the oil is quite bad. there is a slight hole from the inlet of the pump which goes to the sump/body of the compressor which i assume is either to get the oil to the pistons or just aid in the lubrication.
I've been in contact with J&e Hall and had no luck what so ever with them just got told they have no information on this pump as its too old
But being old is what makes me want to do this project justice, I mean come on you don't see oil ways like on the crank don't like that anymore lol simplicity is key after all lol
So I've got a fair bit of work on my hands with cleaning and making new gaskets and other things so please bear with me, the metalic dark blue is defiantly being considered.
hope your all well and safe
Sam
Quick and short update:
So the compressor is stripped and now degreased and cleaned all of it, I've wire wheeled all sealing faces and also all studs, nuts and other various bits and pieces so that took some time but it clean
My next step is to shot blast and powder coat the main body parts, I'm gonna go red and black and maybe a hint of grey????
I've made CAD files of all the gaskets I need in the hope a friend of mine is able to cut it using his laser cutter but gonna do a trial first if not cut them by hand (really hoping his laser works) cut them out of paper just to make sure there ok and all is good first time
got 0.5mm high temp gasket material coming next week 
I had a go at tarting up the two plates on the compressor, really happy with the ali one but the other was slightly bowed so need to give it a touch up, ended up using a x-acto knife to clean the bits too low and ill have to brush the black bits that where too high lol was my first time doing this so pretty happy with my first go.
That's it so far, hopefully have some more progress next week
So the compressor is stripped and now degreased and cleaned all of it, I've wire wheeled all sealing faces and also all studs, nuts and other various bits and pieces so that took some time but it clean
My next step is to shot blast and powder coat the main body parts, I'm gonna go red and black and maybe a hint of grey????
I've made CAD files of all the gaskets I need in the hope a friend of mine is able to cut it using his laser cutter but gonna do a trial first if not cut them by hand (really hoping his laser works) cut them out of paper just to make sure there ok and all is good first time
got 0.5mm high temp gasket material coming next week I had a go at tarting up the two plates on the compressor, really happy with the ali one but the other was slightly bowed so need to give it a touch up, ended up using a x-acto knife to clean the bits too low and ill have to brush the black bits that where too high lol was my first time doing this so pretty happy with my first go.
That's it so far, hopefully have some more progress next week
Unlike air compressors ,fridge compressors are not sealed crankcase the intake gas enters the crankcase so an amount of oil will pass through the compressor they normally have an oil separator in the discharge line.
Yeah I finally figured that one out after I saw the hole from the inlet into the crank case, haven’t looked in the tank yet to see if there is oil in there too, for the amount of time I’ll be using it, the compressor will at the most run for a hour a week, if I find myself using it more I’ll think about adding a oil separator in of some sort just to incase the oil does get into my airline. Would you know roughly what type of oil is best for these fridge compressors?
We always used shell clavus 68 this was in the old days of r22 refrigerant
Thank you bornfree
Its been awhile so thought I should give and update.
I shot blast and powder coated the parts for the compressor, didn't get a lot of photos of these, this was done at my dad's unit as I don't have the gear to powder coat in my garage. for my first time powder coating I think these came out awesome, I've gone for a red an black theme as this will be apparent soon enough
My mate couldn't get his laser to cut the gasket material out without nearly setting fire to his shed
so I had to use the old manual way and cut them out by hand, I reprinted the CAD drawings I did and got to work, having borrowed a hole punch kit from a college which was a big help and a pair of scissor's I made all the gaskets, they came out a lot better than I thought they would and as I cut the paper ones out once before I knew they would fit. I also decided to clean up and paint the fixings for the compressor, now this was probably not the best method of paint but worked, I used cold galv spray for 2 coats and it was a matt grey color so I then did 2 coats of clear coat and they darkened up and a gloss finish so I was happy.
Time for assembly
I shot blast and powder coated the parts for the compressor, didn't get a lot of photos of these, this was done at my dad's unit as I don't have the gear to powder coat in my garage. for my first time powder coating I think these came out awesome, I've gone for a red an black theme as this will be apparent soon enough
My mate couldn't get his laser to cut the gasket material out without nearly setting fire to his shed
so I had to use the old manual way and cut them out by hand, I reprinted the CAD drawings I did and got to work, having borrowed a hole punch kit from a college which was a big help and a pair of scissor's I made all the gaskets, they came out a lot better than I thought they would and as I cut the paper ones out once before I knew they would fit. I also decided to clean up and paint the fixings for the compressor, now this was probably not the best method of paint but worked, I used cold galv spray for 2 coats and it was a matt grey color so I then did 2 coats of clear coat and they darkened up and a gloss finish so I was happy.Time for assembly
Was a nice easy build as to be honest not exactly complicated.
I'm over the moon with how this has came out, for the first restoration project its come out really well. The only pain was re wiring the the valve stem's, I decided to use some stainless 1.2mm tig wire I've got and man it was a B**** to bend into the right way, I could of found some mild steel but as I know there will be oil passing the pistons I wanted something that would last, yeah abit OTT but that's just me.
I left the king valves off as I need to insert a plug into them to seal the one end up, will get that done once I get to my local pipe suppliers. The compressor was already missing two nuts which I need to source so if anyone has any 5/8 whit half chambered nuts just laying around
hit me up lol
My new inlet filter arrived too.........................
Yeah typical evil bay purchase, it came with 0 protection in a bag
so yeah wasn't too impressed but you get what you pay for, so I ended up straighten it out and get it to look like it should and of course I didn't like the orange so you guessed it........its now red
I'm over the moon with how this has came out, for the first restoration project its come out really well. The only pain was re wiring the the valve stem's, I decided to use some stainless 1.2mm tig wire I've got and man it was a B**** to bend into the right way, I could of found some mild steel but as I know there will be oil passing the pistons I wanted something that would last, yeah abit OTT but that's just me.
I left the king valves off as I need to insert a plug into them to seal the one end up, will get that done once I get to my local pipe suppliers. The compressor was already missing two nuts which I need to source so if anyone has any 5/8 whit half chambered nuts just laying around
hit me up lolMy new inlet filter arrived too.........................
Yeah typical evil bay purchase, it came with 0 protection in a bag
so yeah wasn't too impressed but you get what you pay for, so I ended up straighten it out and get it to look like it should and of course I didn't like the orange so you guessed it........its now red Now the motor, I'm so glad i decided to take this apart and not just run it was............... How this didnt catch on fire ill never know
I couldn't believe the state it was in, my dad was using it like this good news was the oil bearings and the spring washers (for taking backlash out of end float, don't know proper name) was all good so just needed a good clean up.
and that it got.
lots of wire wheeling and degreasing and a heavy duty solvent to clean out the windings. I finally got it to a point of painting. Now ill be honest I'm trying to do all this on a budget so I have a tin of black hammarite smooth and some red spray paint so that's what this motor was getting.
So I did a test on the one end plate with the hammarite and a brush, I found slapping it on thick was best so let it dry and was happy with it. so the rest got done.
Tbh the hammarite came up well and I was abit thin in places so I'm thinking when I come to do the receiver I'm gonna try roll it on, i'll do a test patch before I do the whole tank.
Assembly time.
I couldn't believe the state it was in, my dad was using it like this
good news was the oil bearings and the spring washers (for taking backlash out of end float, don't know proper name) was all good so just needed a good clean up.and that it got.
lots of wire wheeling and degreasing and a heavy duty solvent to clean out the windings. I finally got it to a point of painting. Now ill be honest I'm trying to do all this on a budget so I have a tin of black hammarite smooth and some red spray paint so that's what this motor was getting.
So I did a test on the one end plate with the hammarite and a brush, I found slapping it on thick was best so let it dry and was happy with it. so the rest got done.
Tbh the hammarite came up well and I was abit thin in places so I'm thinking when I come to do the receiver I'm gonna try roll it on, i'll do a test patch before I do the whole tank.
Assembly time.
Motor complete
I must say I really am enjoying this project and I know its not the best job in the world but you got to start somewhere right. I've ran the motor up and its sooooo quiet. For anyone who wants to know the caps are 160uf each (also if I need to remember ) Had abit of a funny moment with the heat shrink, I do not own a lighter or propane torch, what I do own is a weed burner, yep it was a right game holding the burner and heat shrink in position and I had to be soo careful not to burn the paint off the caps but it worked out alright in the end.I'm currently got the pressure switch torn down ready for cleaning and painting, and I've removed everything off the receiver ready to start stripping that, gonna try paint panther from tool station as I can't get my hands on any starchem paint stripper. I thought out of interest to look inside the tank and well...............
.
that's the oil and water mixture left inside
so ill be removing all of that and giving it a good jet wash out and get the worst bits out, not sure if there is anything I can line the tank with afterwards, its from 1960 so its very thick walled so not worried about rusting too much but I am planning on once its cleaned and stripped of paint to hydro test the test just as a piece of mind really.That's as fair as I've got so far, with having young kids and money being abit tight I think its coming along well, hoping to give a update sooner than later but we shall see, again sorry its information overload.
Regards
Sam
Thank you @3000alloy much appreciated
not done it yet
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Now this is what threw me, no piston rings............im hoping someone can enlighten me abit to this as even old fridge pumps had piston rings from what I can find,
Think about it. What pressure is the crank case operating at, compared to the pumping side? What are rings for? The answers to those two questions explains why compression rings are not required.
It likely also explains why there is some oil leakage from the crankshaft ends.
Think about it. What pressure is the crank case operating at, compared to the pumping side? What are rings for? The answers to those two questions explains why compression rings are not required.
It likely also explains why there is some oil leakage from the crankshaft ends.
That rebuild is a credit to you.
