Ulka Pump RepairA pretty cool blog that goes over how to repair / rebuild Ulka vibe pumps used on many espresso machines
Rebuilding an ULKA Vibratory Pump (Espresso machine pump)
A DYI at Instructables
Pompe à Vibration ULKA - Modèle E - Type EP4
A French site with great animations that show how the pump works!
Per Coffee 97' Parts Diagram / List ER0077/01DM0041/082 OR 167 gasket EPDM 70 SH - O-Ring between boiler and group body
This is a 2 3/4" OD - 2 1/2" ID - 1/8" W Material: EPDM Durometer Hardness: 70A - AS568A Dash Number: 230
A pack of 25 is available at Small Parts for $6.96
DM0041/022 OR 2025 gasket red - O-Ring between inlet fitting and group body & between group valve assembly and group body
This is a 3/8" OD - 1/4" ID - 1/16" W Material: Silicone / VMQ Durometer Hardness: 70A - AS568A Dash Number: 010
A pack of 100 is available at Small Parts for $11.07
DM0041/081 OR 112 gasket EPDM 70 SH - Seal between steam valve and boiler
This is a 9/16" OD - 3/8" ID - 3/32" W Material: EPDM Durometer Hardness: 70A - AS568A Dash Number: 110
A pack of 100 is available at Small Parts for $3.68
or if tolerances are "loose" - big
This is a 5/8" OD - 3/8" ID - 1/8" W Material: EPDM Durometer Hardness: 70A - AS568A Dash Number: 204
A pack of 100 is available at Small Parts for $5.65
DM0041/088 OR 2025 gasket - O-Ring between steam pipe - lower pipe and steam pipe - uppper pipe
This is a 3/8" OD - 1/4" ID - 1/16" W Material: EPDM Durometer Hardness: 70A - AS568A Dash Number: 010
A pack of 100 is available at Small Parts for $4.34
Group Gasket NG01/001 - Mine is 8.5mm thick 57mm ID 72mm OD
Tex at the Gaggia Users Group recommended I use a $6.06 E-61 Soft 8.5mm Group Head Gasket from Espresso Parts.
Last item on the list is 4 DM0701 Belt - Spring clips to secure latex tubing.
Still Researching but these may work:
Acetal Snapper Type Hose Clamp, Quick Ratchet Closure, For 3/8" Nominal Tube OD, .351-.394 Clamp ID (Pack of 10) $4.55 at Small Parts
These are plastic so they will not rust like the original ones did.
This is a helpful o-ring sizing chart
A potentially sleep inducing 256 page technical handbook on o-rings - could be handy
I watched this eBay item for several days. It turned out no one bidded on the item and it did not have a reserve. Someone could have had a working La Cimbali M27 Selectron 2-group commercial espresso machine for a measly buck.The listing:
La Cimbali M27 Selectron 2-group commercial espresso machine
220v - 240v, single phase. Can be easily rewired internally for dual phase operation. Please ask if you have any questions about this item.
I have a large order in with Chris Coffee Service. I ordered the replacement Macap M4 Burrs and since shipping was free with orders over $50 I took the liberty to order some other items as well:
3 Oscar Group Gaskets - Hey they are cheap!
Latex tubing for the Gaggia Coffee water supply lines
2 Bumper rubber tamper holders - Tiny splurge
Isomac 2 Hole Steam Tip for the Oscar - We love the milk drinks
Replacement brushes for my Pallo Coffeetool - Great Cleaning Brush!
New Vacuum Breaker Valve for the Oscar - So I can put it on a timer in the future
Water Hardness Test Strips - I have no clue how hard or soft our water is
Solid Stainless Steel 58mm Tamp - Total splurge item - Hope the wife likes it!
My only problem is I cant make espresso and we are having major withdraw. Flora called me during the day to tell me she had an espresso at a local coffee shop and expounded about how good it was. I tried my best this evening with the French Press but frankly the coffee sucked.
- What o-rings will work with espresso machines?
- What materials are food compatible?
- What sizes are used and are their standards?
I saw this machine on the New Orleans Craigslist:
Some good information about the 95 series can be found at this website which goes over the Sprint's smaller sister the La San Marco 95-22 Pract E.
It looks like the model numbers for the Coffee 97 are in the the 37000 range while the Coffee Deluxe is in the 97000 rangeCoffee Deluxe / Coffee 97 Information
User Manual, Exploded View, Wiring Diagram 120v , Portafilter Diagram
Figuring out the parts I need for a restoration is a challenge. So far I think I need:
Nice looking crack on the portafilter. I should have caught this in the ebay photos but I didn't. One good twist to get the portafilter sung would have snapped the handle right off.
It appears the pump was leaking at some point in time. During my tests I did not notice any leaking around this area. The stains underneath the pump in the housing also support it was leaking at some point.
The inside of the housing is covered in some tan substance that does not want to come off easily. I hope it will come off with some 409 and hot water. I also noticed some black particles in the corners that may indicate the Coffee was home to some small critter.
Note the increased staining in the pump area to the top right. I could not find any rust on the housing and the paint is sound.
It could be much much worse based on pictures I have seen on the Internet of other owners boilers after a tear down. I think descaling before disassembly helped. I will still clean it up with a Dremel tool.
It is interesting to see how the chrome is missing in certain areas of the group head. The boiler gasket was totally dried out. Pieces of the gasket were starting to fall off when I removed it. It is no wonder the boiler was leaking in this area.
Like may of you I have had an on and off again fascination with coffee. Over the years my wife and I acquired a cheap Proctor Silex blade grinder and a Bodum French Press and marveled at how good coffee could be at times. A few months would pass and we would slowly gravitate back to the convience of pre-ground coffee and the trusty Braun drip coffee maker. New Orleans is hot for many months out of the year so during the summer months we would make cold brewed coffee which is delicious.
This time the urge was the ever increasing habit of finding numerous empty latte cups in the car. I also found the ability to tinker around with espresso machines and grinders very appealing. I enjoy taking something old and making it new. Many of the machines seem to impart a certain personality and project passion and romance much like a classic European motorcycle or car can.
I did my research and limited my choices down to a Rancilio Silvia, LeLit PL041 or one of the various entry level Gaggia machines. These machines are nat at the Isomac or Expobar level but server as a low risk way to dip my toes in the water and find out if this is a hobby I want to jump head first into.
