E 300 (124.131) L6-3.0L DSL (606.910) (1995)
Valve Spring/Stem Seal Replacement (Part 3 Of 3) Engine 604 Shown, Engine 606 Similar
NOTE: Numbers in parentheses ( ) indicate a component or tool in the associated illustration.
REMOVAL
CAUTION
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Risk of scalding as a result of hot coolant spraying out
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Do not open the cap of the expansion reservoir or radiator unless the coolant temperature is below 90°C.
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Carefully turn cap to the first detent or slowly about 1/2 turn.
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Wear protective clothing.
1. Remove radiator (1), refer to Cooling System.
2. Remove chain tensioner (2). See: Timing Components/Timing Chain Tensioner/Service and Repair
3. Remove camshafts (6, 7). See: Camshaft, Lifters and Push Rods/Camshaft/Service and Repair/Procedures
4. Remove camshaft housing (10). See: Camshaft, Lifters and Push Rods/Camshaft Bearing/Service and Repair
5. Attach supporting beam (11) with slide, lever presser (12) and thrust piece to cylinder head
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Use the camshaft housing 7x42 mm bolts (13)
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Tighten to: 15 Nm
6. Rotate piston of the cylinder to be serviced to TDC
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Rotate engine at the crankshaft; hold timing chain (15) up when doing this so that it does not jam.
7. Install plate (3) for locking crankshaft/ring gear, refer to Installing/Removing Crankshaft Retaining Lock. See: Service and Repair/Procedures
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After positioning cylinder to be serviced to TDC, in order to prevent crankshaft or piston being turned further
NOTE: Use 6 x 90 mm bolts (4) otherwise the threads in the rear end cover will be damaged.
8. Connect Cylinder leak tester (20) as follows
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Screw short connector (04) with the angled connection piece (02) into the prechamber of the cylinder to be tested.
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Calibrate cylinder leakdown tester and screw connection hose (03) of the tester onto the connection piece (02).