Installing Valves; Removing Cylinder; Checking Cylinder - BMW F 650 GS Repair Manual

11 34 020 Installing valves

•
Install valve with shrink-fit tube.
L
Note:
Remove the shrink-fit tube.
11 5 691
11 0 521
11 0 523
•
Install valve spring and valve spring retainer.
•
Secure the cylinder head to support plate,
BMW No. 11 0 523.
•
Secure adapter plate, BMW No. 11 0 521, sup-
port, BMW No. 11 5 691, spindle,
BMW No. 11 5 692, nut, BMW No. 11 5 693,
and thrust plate, BMW No. 11 0 522.
•
Press down the valves with the thrust plate.
L
Note:
Install valve collets with a small amount of grease to
facilitate assembly.
•
Insert the valve collets.
•
Check bucket tappets for damage and reinstall
on original valves.
11 11 150
•
Separate the cylinder base from the engine
block.
e
Caution:
When removing cylinder, make sure that the piston
does not strike the engine block.
•
Remove cylinder.
11 5 692

Checking cylinder

11 0 522
E110130
•
Check cylinder face and sealing faces for dam-
age and blow out oil ducts for chain tensioner.
•
Measure cylinder bore at 55...65 mm
(2.17...2.56 in) from the upper edge with an inter-
nal micrometer at three points (1, 2, 3).
Wear limits for cylinder bore:
Cylinder A ................... max. 100.03 mm (3.9382 in)
Cylinder B ................... max. 100.04 mm (3.9387 in)

Removing cylinder

1
2
3
E110140
E110150
11.33