380SL (107.045) V8-3.8L (116.960) (1982)
/v8-3.8l_(116.960)/Page-506001.png)
Timing Chain: Procedures
General
As of model year 1984, double roller timing chains have been installed in all 116 engines. Older engines with a single roller timing chain (simplex chain)
should be converted to a double roller chain (duplex chain) set-up.
The conversion should be done when the timing chain needs to be replaced or an engine is overhauled.
The procedure for replacing the single roller chain with a double roller chain and sprockets as well as setting the valve timing, without engine removal, is
described in the Removal and Installation procedure.
Special Tools
NOTE: Some or all of the special tools listed are required to perform this repair procedure. If Mercedes special tools are not available, select tools may
be substituted with an aftermarket equivalent.
Tool Name
Tool Number
Cooling system pressure tester
001 589 48 21 00
Radiator cap with hose adapter for pressure tester
605 589 00 25 00
6 mm Allen wrench with T-handle (440 mm)
116 589 03 07 00
Impact puller for sliding rail pins
(in conjunction with threaded studs)
116 589 20 33 00
Threaded stud M6 x 50
116 589 01 34 00
Engine lock (starter removed)
116 589 O1 40 00
Puller for crankshaft hub
116 589 10 33 00
Torque wrench (3/4" drive) range 150-500 Nm
Locally Available
27 mm socket, 1/2" drive
001 589 65 09 00
Radial seal installer
110 589 07 61 00
Camshaft retaining wrench
116 589 01 01 00
Removal
1.
Disconnect negative battery terminal.
2.
Drain coolant from radiator and engine block.
3.
Drain engine oil.
4.
Remove V-belts, engine fan and radiator.
5.
Remove cruise control actuator from engine.
6.
Disconnect alternator with bracket, power steering pump, air pump and air conditioning compressor with bracket. Leaving pipes/hoses connected,
move respective components aside.
7.
Remove both valve covers.
Figure 1 - Camshaft Retaining Wrench
8.
Hold camshaft with special retaining wrench and loosen stretch bolt on each camshaft sprocket (Figure 1).
