S 600 Sedan (140.057) V12-6.0L (120.982) (1996)
NOTES
Improved noise characteristics in engine speed range 900 - 1200 rpm when engine is at normal operating temperature as a result of modified chain
tensioner.
Pressure pin (10) 1.1 mm diameter control bore (identified by 3 grooves on 14.2 diameter). Compression pin (8) wire gauge 0.7 mm (was 0.6 mm).
Standard as of August 1991.
Engine 120.980-12-003 128
120.981-12-000 068
REMOVAL, INSTALLATION
1
Turn crankshaft to 30° after ignition TDC on 1st cylinder (arrow).
2
Loosen plug (1) approximately 1 turn.
3
Completely unscrew chain tensioner and remove.
4
Remove plug (1) with sealing ring (5). Remove thrust spring (8) together with filler pin (7).
5
Press out thrust bolt (10) together with catch spring (9) in thrust direction. Clean parts.