Remove/install camshafts

AR05.20-G-6992H

Remove/install camshafts

14.12.2018

Engine

470.9, 471.9, 473.9 in model 800.310/320

Shown on engine 471.9

1

Camshaft bearing bridges

2

Camshaft housing

3

Intake camshaft

4

Exhaust camshaft

5

Gearwheels

6

Template

 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-N-5000-01H



Remove

1

Remove cylinder head cover

AR01.20-G-5014HA

2.1

Remove intermediate frame under cylinder head cover

Engine 470.9## ## up to 222433, 471.9## ## up to 124618 in model 800.310/320

AR01.20-G-5016H

2.2

Remove wiring harness of fuel injectors

Engine 470.9## ## as of 222434, 471.9## ## as of 124619, 473.9 in model 800.310/320

AR07.16-G-1008H

3

Attach turning device to timing case

AR03.30-G-1600-03N

 Bolt, turning device to timing case

*BA01.60-N-1002-01N

 Turning device

*904589046300

4

Place and lock engine for ignition TDC of cylinder 1



Gearwheel drive modified

BT05.10-W-0002-01A

Engine 470.9## ## up to 206646, 471.9## ## up to 206646, 473.9## ## up to 206646 in model 800.310/320

AR05.10-W-7620-03H

Engine 470.9## ## as of 206647, 471.9## ## as of 206647, 473.9## ## as of 206647 in model 800.310/320

AR05.10-W-7620-03HA

 The ignition TDC setting or locking must not be altered during removal/installation of the intake camshaft (3) or exhaust camshaft (4).

 Turning device

*904589046300

 Engine 470.9## ## up to 206646, 471.9## ## up to 206646, 473.9## ## up to 206646 in model 800.310/320
Template

*470589032300

 Engine 470.9## ## as of 206647, 471.9## ## as of 206647, 473.9## ## as of 206647 in model 800.310/320
Template

*470589062300

 Drift

*470589001500

5

Remove intake rocker arm assembly

AR05.00-G-5522H

6

Remove exhaust rocker arm assembly

AR05.00-G-5523H

7

Mark installation location of the camshaft bearing bridges (1)

8

First loosen screw/bolts for the camshaft bearing bridges (1) in reverse order of the tightening procedure and then remove

Tightening procedure

AR05.20-W-6992-01H

9

Remove camshaft bearing bridges (1)

10

Remove intake camshaft (3) and exhaust camshaft (4)



Check

11

Check camshaft case (2) and camshaft bearing bridges (1) by means of visual inspection for wear, score marks or scratches

In the case of clearly recognizable wear as well as score marks or scratches



Replace camshaft case (2) with the camshaft bearing bridges (1).

12

Check contact surfaces on intake camshaft (3) or exhaust camshaft (4) by means of a visual inspection for wear, score marks or scratches

In the case of clearly recognizable wear as well as score marks or scratches



Replace intake camshaft (3) and/or exhaust camshaft (4).



Install

13

Install intake camshaft (3) and exhaust camshaft (4)


Lubricate intake camshaft (3) or exhaust camshaft (4) with engine oil.
Damage to the intake camshaft (3) or exhaust camshaft (4) can occur otherwise.

 The markings on the gears (5) must match with the markings on the  template (6).
Select markings on the  template (6) according to the displaced volume variants.

 Engine 470.9## ## up to 206646, 471.9## ## up to 206646, 473.9## ## up to 206646 in model 800.310/320
Template

*470589032300

 Engine 470.9## ## as of 206647, 471.9## ## as of 206647, 473.9## ## as of 206647 in model 800.310/320
Template

*470589062300

14

Install camshaft bearing bridges (1) according to the markings

 Observe the installation position of the camshaft bearing bridges (1). The front and rear camshaft bearing bridge (1) is marked with "Front" or "Rear". Note the applied markings on the usual camshaft bearing bridges (1).

15

Tighten screw/bolts for camshaft bearing bridges (1) according to the tightening procedure

Tightening procedure

AR05.20-W-6992-01H

 Bolt, camshaft case with rocker arm bracket to cylinder head

*BA05.20-N-1001-04A

16

Install exhaust rocker arm assembly

AR05.00-G-5523H

17

Install intake rocker arm assembly

AR05.00-G-5522H

18

Remove cranking device on timing case

AR03.30-G-1600-03N

 Screw/bolt, cap of TDC inspection hole to timing case

*BA01.60-N-1001-01N

 Turning device

*904589046300

19

Pull out drift on timing case

 Drift

*470589001500

20

Install crankshaft position sensor with the new sealing ring and tighten screw/bolt

 Bolt, crankshaft position sensor to timing case

*BA07.04-N-1001-01H

21

Remove template (6)

 Template

*470589032300

22.1

Install intermediate frame under cylinder head cover

Engine 470.9, 471.9## ## up to 124618 in model 800.310/320

AR01.20-G-5016H

22.2

Install injectors wiring harness

Engine 470.9## ## as of 222434, 471.9## ## as of 124619, 473.9 in model 800.310/320

AR07.16-G-1008H

23

Install cylinder head cover

AR01.20-G-5014HA

 Timing case

Number

Designation

Engine 470.9, 471.9

Engine 473.9

BA01.60-N-1001-01N

Screw/bolt, cap of TDC inspection hole to timing case

Nm

30

30

 Timing case

Number

Designation

Engine 470.9, 471.9

Engine 473.9

BA01.60-N-1002-01N

Bolt, turning device to timing case

Nm

30

30

 Camshaft case

Number

Designation

Engine 470.9, 471.9, 473.9

BA05.20-N-1001-04A

Bolt, camshaft case with rocker arm bracket to cylinder head

M8

Nm

25

M10

Stage 1

Nm

20

Stage 2

Nm

50

 Sensors

Number

Designation

Engine 470.9, 471.9, 473.9

BA07.04-N-1001-01H

Bolt, crankshaft position sensor to timing case

Nm

10