Remove/install slide rails and tensioning rail

AR05.10-D-8424TSV

Remove/install slide rails and tensioning rail

18.12.2018

Engine

642 in model 907

Shown on engine 642.9

1

Timing chain

6

Camshaft sprocket

11

Bearing pin

2

Slide rail

7

Camshaft sprocket

12

Bearing pin

3

Tensioning rail

8

Intake camshaft (cylinder head RH)

13

Bearing pin

4

Slide rail

9

Exhaust camshaft (cylinder head LH)

14

Chain tensioner

5

Slide rail

10

Bearing pin

 Warning

Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating area of mechanical components when moving components.

AS00.00-Z-0009-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 Caution

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Release camshaft sprocket (7) from intake camshaft (8) and camshaft sprocket (6) from exhaust camshaft (9).

AR05.20-D-6040TSV

 In this connection, piston of cylinder 1  is set to ignition TDC.

 Do not remove camshaft sprockets (6, 7).

2

Remove oil filter housing.

AR18.20-D-3471TSV

3

Remove fuel high-pressure pump.

AR07.02-D-1028TSV

4

Remove timing case cover.

AR01.40-D-8000TSV

 Crankshaft must not turn during removal of belt pulley.

If crankshaft has turned



Turn engine to TDC position before removal of timing case cover.

Crank engine at belt pulley of crankshaft

AR01.00-D-0100-01TSV

 Socket wrench bit

*001589650900

5

Remove camshaft sprockets (6, 7) and fully remove timing chain (1).

AR03.20-D-3637TSV

 Installation: Check basic position of balance shaft.

6

Remove slide rail pins from both cylinder heads.

AR01.30-D-5800-04TSV

 Installation: Screw suitable screws into slide rail pins, drive slide rail pins into cylinder heads and unscrew screws again.

 Threaded bolt

*116589013400

 Impact extractor

*116589203300

 Puller

*605589003300

7

Remove bearing pin (12) and tensioning rail (3) downwards.

 Bearing pin, tensioning rail to crankcase

*BA05.10-N-1003-01G

8

Remove bearing pin (10) and remove slide rail (4).

 Bearing pin, slide rail to crankcase

*BA05.10-N-1002-01G

9

Remove bearing pin (11) and slide rail (5) downwards.

 Bearing pin, slide rail to crankcase

*BA05.10-N-1002-01G

10

Remove bearing pin (13), press chain tensioner (14) of oil pump chain upwards against spring force and remove slide rail (2) downwards.

 Bearing pin, slide rail to crankcase

*BA05.10-N-1002-01G

11

Remove chain tensioner (14) from slide rail (2).

If slide rail (2) is replaced.

12

Install in the reverse order.

 Chain drive, belt drive

Number

Designation

Engine 642 in model 639
Engine 642 in model 906, 907

BA05.10-N-1002-01G

Bearing pin, slide rail to crankcase

Nm

17

 Chain drive, belt drive

Number

Designation

Engine 642 in model 639
Engine 642 in model 906, 907

BA05.10-N-1003-01G

Bearing pin, tensioning rail to crankcase

Nm

17