I picked up a La Marzocco ( SB70/2003 model) at an auction. I took it to the local repair guy. He says it needs a pump, de limes, CPU, portafilters, heaters, or about 2000.00 in parts and 2500 in labors. So I think I will tickle it.
Are there any problem parts that should be replaced because I am in there and do not care to take it apart again, maybe a switch, control pad or ?
Are there mods that improve the performance? Parts suppliers and with great prices and super service?
I have overhaul car engines and did all kinds of work on cars. Has anyone jumped in to an overhaul of an espresso machine with good result? Is there a factory or other repair manual?
I am nuts?
thank you, after I finsh the roaster I will strat on that
Wow. You have chosen a serious dual boiler project. Affordable parts and detailed instructions are available at Coffee Mills as we specialize in La Marzocco machines. Automobile repair knowledge doesn't always apply to fixing an espresso machine.
Agree with everything Mike said! If you're not afraid of an internal combustion engine, you will probably be able to figure out an espresso machine, it'll just take some time and parts. Very different, but much simpler really.
Basically they're just boilers (which might need to be descaled) and an electrical system (chunks of which might need to be replaced). With a parts diagram and a basic knowledge of how they work, you can figure it out.
Make a connection with a local tech or roaster who sells machines, see if they can get you parts and/or advice when needed. Espressoparts.com basically sells all the parts, you could probably build a machine piecemeal from there, but you may be able to find better prices. Some parts you can get generically for better prices (Procon pumps from Grainger instead of ordering from afar etc).
Once you're mostly operational, Marzocco's tech line is great for helping you scientific-method your way to what else needs fixed.
In terms of mods to improve performance, you can switch the groups to Piero caps if they're not already. If it's not already, you can switch the heat control to a PID system--if you need new electrical/CPU anyway, might as well go with that.
While espressoparts.com good for emergencies I buy most my parts through http://nuovaricambi.com For instance LM group gaskets $1.40, Sirai pstat $39 etc. You'll need to setup a wholesale account to get those prices - min order only $100. Actually once you setup a wholesale account there is no minimum order. Just that their online "wholesale" prices are automatically cut in half once the cart hits $200 - and suddenly magically it's $100 - so those @list $2.80 group gaskets become $1.40 etc.