Rancilio EGRO 55 Series Technical Manual page 90

6.6 PM GUIDE
A-6.
REMOVE LOWER PISTON O-RINGS -- C
A6.4 Remove the shower screen by unscrewing the screw on the end of the piston.
TOOL: Screwdriver
A6.5 Remove O-ring from lower piston by inserting a screwdriver in the O-ring groove and "popping" the
O-ring out of the groove
A6.4
A-7.
REPLACE LOWER PISTON O-RINGS AND LUBRICATE
A7.1 Lubricate lower piston groove
LUBE: Viper lube Loctite PN 36781
A7.2 Replace lower piston O-ring
PN: 029441 (small orange seal)
A7.3 Reassemble shower screen onto lower piston
TOOL: Screwdriver
PLEASE NOTE: For PM Type 2 please replace the shower screens
--> PN: 060116
A7.4 Lubricate lower piston auger shaft and auger shaft hole in piston
LUBE: Krytox RFE PFPE Lube, Loctite PN 29711 (green tube)
A7.5 Reassemble piston onto LPA by turning it down the auger shaft using a 3mm Allen wrench inserted into the gearbox
of the LPA
TOOL: 3mm Allen Wrench
TIP: The quick connect faces to the outside, or away from the motor
A7.1
ALTERNATIVE STEPS FOR PM TYPE 1:
ON-SITE O-RING EXCHANGE
A6.5
A7.4
ONTINUED
- Section 6: Page 17 -
EGRO 55 SERIES TECHNICAL MANUAL
A7.5