Rancilio EGRO 55 Series Technical Manual page 91

6.6 PM GUIDE
A-8.
REASSEMBLE UPA AND LPA INTO BREW GROUP ASSEMBLY
A8.1 Mount lower piston assembly into brew unit housing
TOOL: 3mm Allen wrench
PLEASE NOTE: the motor goes to the left (when the BGA is facing towards you) and the cotter pins
are inserted from the front of the BGA
A8.2 Mount the upper piston assembly into the brew unit housing
PLEASE NOTE: motor goes to the left (when the BGA is facing towards you) and the cotter pins
are inserted from the front of the BGA
If the cotter pins which hold the UPA in place do not easily insert into the frame, manually move the
piston up or down using a 3mm Allen wrench inserted into the UPA gear box
A8.3 Test the pistons manually by using a 3mm Allen wrench inserted into the gear box of the UPA and the LPA, to make
sure that they are positioned correctly
--> TOOL: 3mm Allen wrench
A8.1
A-9.
REATTACH HOSES TO UPPER AND LOWER PISTONS
A9.1 Reattach the hoses to the upper and lower pistons
A9.1
ALTERNATIVE STEPS FOR PM TYPE 1:
ON-SITE O-RING EXCHANGE
A8.2
- Section 6: Page 18 -
EGRO 55 SERIES TECHNICAL MANUAL
A8.3