Rancilio EGRO 55 Series Technical Manual page 88

6.6 PM GUIDE
A-4.
REPLACE AND LUBRICATE UPPER PISTON O-RINGS
A4.1 Lubricate upper piston groove
LUBE: Viper Lube Loctite PN 36781
A4.2 Replace the upper piston scrapper ring and O-ring
PN: 039061 and 0390654
A4.3 Reassemble the shower screen and stainless steel upper piston plate onto upper piston
TOOL: Phillip's head screwdriver
! !
CAUTION: Do not over tighten or cross thread
PLEASE NOTE: For PM Type 2 please replace the brew shower screens with new screens
--> PN: 060116
TIP: For optimal performance rotate the upper and lower shower screens during reassembl
A4.4 Lubricate upper piston auger and auger hole in the piston shaft
LUBE: Krytox RFE PFPE Lube, Loctite PN 29711 (green tube)
4.1
A
ALTERNATIVE STEPS FOR PM TYPE 1:
ON-SITE O-RING EXCHANGE
4.3
A
- Section 6: Page 15 -
EGRO 55 SERIES TECHNICAL MANUAL
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4.4
A