EAS Pump rebuild and mod with pics.

JamesBB · Aug 26, 2013

My compressor is now running well, very pleased with the result, if it lasts 6 months I will be happy.

Cost of repair was between £8 to 10.

Thermal switch
Solder
Rivet
Contact cleaner
MP15 gasket material
608ZZ bearing from a skate board
Aluminium gauze for packing around bearing.

Photos probably self explanatory.

The new bearing certainly holds the motor shaft in place far more steadily, you can see the potential free play there is from the uneven gap between the magnets and the coils in the last photo.

EAS now working a treat, however I am aware that I need to replace the front bags fairly soon, rears are not great but the fronts are priority.

Cheers

Druim · Aug 27, 2013

JamesBB said:
My compressor is now running well, very pleased with the result, if it lasts 6 months I will be happy.

Cost of repair was between £8 to 10.

Thermal switch
Solder
Rivet
Contact cleaner
MP15 gasket material
608ZZ bearing from a skate board
Aluminium gauze for packing around bearing.

Photos probably self explanatory.

The new bearing certainly holds the motor shaft in place far more steadily, you can see the potential free play there is from the uneven gap between the magnets and the coils in the last photo.

EAS now working a treat, however I am aware that I need to replace the front bags fairly soon, rears are not great but the fronts are priority.

Cheers

Let's hear more in a year or two

JamesBB · Feb 22, 2015

18 months and still running.

Castor · Feb 23, 2015

JamesBB said:
18 months and still running.

I love fixes like this - a proper bodge!

JamesBB · Feb 23, 2015

Castor said:
I love fixes like this - a proper bodge!

You mean fitting a new thermal switch, a piece of good quality gasket material and an upgraded bearing?

The original bearing is simply terrible, no wonder these things fail the design itself is a reasonable one, ruined by a bodge job on the bearing design.

stopover · Feb 23, 2015

Just about to rebuild a couple or three so will look into these to see what can be improved aka your suggestion.

Castor · Feb 23, 2015

JamesBB said:
You mean fitting a new thermal switch, a piece of good quality gasket material and an upgraded bearing?
The original bearing is simply terrible, no wonder these things fail the design itself is a reasonable one, ruined by a bodge job on the bearing design.

It's bizarre - there are so many examples of this syndrome - a perfectly good design let down by one small element.

Grrrrrr · Feb 23, 2015

JamesBB said:
You mean fitting a new thermal switch, a piece of good quality gasket material and an upgraded bearing?
The original bearing is simply terrible, no wonder these things fail the design itself is a reasonable one, ruined by a bodge job on the bearing design.

It isn't just the bearings. The PCB itself is ****e. The grub screw that holds the piston on the rotor-arm is pathetic. About the only semi-decent part is the windings. I'm amazed they last as well as they do.

Castor · Feb 23, 2015

Grrrrrr said:
It isn't just the bearings. The PCB itself is ****e. The grub screw that holds the piston on the rotor-arm is pathetic. About the only semi-decent part is the windings. I'm amazed they last as well as they do.

Designed to fail = cash for the stealer network. Simples.

Castor · Feb 23, 2015

Grrrrrr said:
It isn't just the bearings. The PCB itself is ****e. The grub screw that holds the piston on the rotor-arm is pathetic. About the only semi-decent part is the windings. I'm amazed they last as well as they do.

From the pics - I've seen that armature and self-aligning phos bronze bearing before somewhere...Wipac? Lucas? wiper motor maybe?

TAKdriver · Feb 24, 2015

JamesBB said:
My compressor is now running well, very pleased with the result, if it lasts 6 months I will be happy.

Cost of repair was between £8 to 10.

Thermal switch
Solder
Rivet
Contact cleaner
MP15 gasket material
608ZZ bearing from a skate board
Aluminium gauze for packing around bearing.

Photos probably self explanatory.

Cheers

The new bearing certainly holds the motor shaft in place far more steadily, you can see the potential free play there is from the uneven gap between the magnets and the coils in the last photo.

EAS now working a treat, however I am aware that I need to replace the front bags fairly soon, rears are not great but the fronts are priority.

James you obviously know what You're doing. I have a compressor lying in bits which will probably just become part of my garage furniture. Would you be interested in having it ? Might save somebody some day. By the way, postage only

JamesBB · Feb 26, 2015

TAKdriver said:
The new bearing certainly holds the motor shaft in place far more steadily, you can see the potential free play there is from the uneven gap between the magnets and the coils in the last photo.

EAS now working a treat, however I am aware that I need to replace the front bags fairly soon, rears are not great but the fronts are priority.

James you obviously know what You're doing. I have a compressor lying in bits which will probably just become part of my garage furniture. Would you be interested in having it ? Might save somebody some day. By the way, postage only

Hi
Could be interested for spares.
Can you check how much postage would be?
Cheers

TAKdriver · Feb 26, 2015

JamesBB said:
Hi
Could be interested for spares.
Can you check how much postage would be?
Cheers

PM me with your address : if it's not too bad you can have it with my compliments. It would probably cost more than you spent on your rebuild !
No promises that it'll arrive shortly : I'll just pack it and mail it when I get a spare half hour.

JamesBB · Feb 26, 2015

TAKdriver said:
PM me with your address : if it's not too bad you can have it with my compliments. It would probably cost more than you spent on your rebuild !
No promises that it'll arrive shortly : I'll just pack it and mail it when I get a spare half hour.

Pm'd you.

Thanks again.

JamesBB · Nov 11, 2020

Hi All

Just a quick update on this. I can still recommend this repair/upgrade.
It's been running like this for about 8 years now and just recently started making grumbling sounds. However, it is still running.
Rebuilding the other one donated to me with new bearing plus some new seals and bore etc from a kit now.
I think most of the noise on mine is the slip rings which are quite worn. The other armature is ok slip ring wise.

Looking at refurb of all O rings and seals on the valve block in the near future too.

Cheers

Henry_b · Nov 11, 2020

JamesBB said:
Hi All

Just a quick update on this. I can still recommend this repair/upgrade.
It's been running like this for 10 years now and just recently started making grumbling sounds. However, it is still running.
Rebuilding the other one donated to me with new bearing plus some new seals and bore etc from a kit now.
I think most of the noise on mine is the slip rings which are quite worn. The other armature is ok slip ring wise.

Looking at refurb of all O rings and seals on the valve block in the near future too.

Cheers

Looked live a good fix, my original compressor bearing was fine only issue was sticking brushes, the only way I knew it was running was by putting my hand on the EAS box..

I replaced it with a Dunlop compressor that sounded like a bag of ****e from day one, and eventually fell completely apart.

The OE compressor for the P38 is a modified Thomas 315 Compressor from the US.

Rubberknees · Nov 11, 2020

Castor said:
Designed to fail = cash for the stealer network. Simples.

Totally agree was going to say the same thing

Tricky of York · Nov 11, 2020

Rubberknees said:
Totally agree was going to say the same thing

Plus one. I've had issues with both my L322 pumps. The most recent I had replaced with the latest version pump on the basis it should outlast my ownership but still got my fingers crossed. lol.
Tricky.

EAS Pump rebuild and mod with pics.

JamesBB

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Druim

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stopover

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Castor

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Grrrrrr

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Castor

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Castor

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TAKdriver

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JamesBB

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TAKdriver

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Henry_b

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