Shimano GRX RX 815 Series Dealer's Manual page 175

MAINTENANCE
Applying grease to the chain stabilizer
4.
Disassemble the chain stabilizer as shown in the figure below.
(1) Remove the cam unit.
(2) Remove the roller clutch from the chain stabilizer.
Chain stabilizer
5.
Apply grease to the circumference of the roller clutch.
NOTICE
• Be careful not to get grease inside the roller clutch. Otherwise, the clutch could
stick, slip, or otherwise malfunction.
6.
Install the removed parts to their original position.
Install it in the reverse order from the removal procedure.
• For installing the chain stabilizer and cam unit, refer to Step 5 in "Installation" in
"Replacement of the plate and the plate tension spring".
• For installing the plate unit cover, refer to Step 6 in "Adjusting friction".
Cam unit
New grease number:
Y04121000 (50 g)
Grease number:
Y04120800 (100 g)
Roller clutch
Roller clutch
175