Checking Timing Chain For Wear - BMW F 650 GS Repair Manual

1
2
11 12 116 Removing cylinder head
•
Remove front chain rail (1).
•
Release the coolant line hose clips with pliers,
BMW No. 17 5 500.
•
Allow the timing chain to slide into its cavity.
•
Remove the starter motor.
....................................................See Group 12
a
•
Remove collar nuts from cylinder head.
L
Note:
If the cylinder head does not have to be dismantled,
do not separate cylinder head from cylinder.
In this case the next six work steps can be omitted.
•
Remove machine screws for chaincase (2).
•
Remove rear collar screw (3) from cylinder head.
•
Remove front collar screws from cylinder head.
•
Remove top collar screws from cylinder head.
•
Separate the cylinder head from the cylinder.
•
Remove cylinder head.
11.28
3

Checking timing chain for wear

•
Push hydraulic chain tensioner (4) in the direc-
tion of the tensioner rail in the guide on the cylin-
der, until resistance to movement is felt.
•
Measure distance (A) from the sealing face to the
chain tensioner piston.
E110111
4
A
B
F111060