Test the turbocharger

AR09.40-W-5910C

13.9.06

ENGINE 457.9 in MODEL 374, 375, 940, 942, 943, 944, 958

W09.40-1044-05

Shown on engine without code (MZ4) Turbobrake

1 Turbocharger

1.1 Rotor shaft

2 Crankcase ventilation line

3 Air intake hose

4 Air intake pipe

Modification notes

22.7.06	Tightening torques added.	Step 10	*BA09.00-N-1001-01B
			*BA09.00-N-1002-01B
			*BA09.00-N-1003-01B

	Removing
 Danger!	Risk of injury caused by body parts being pinched or crushed as cab is tilted	Ensure that no one is within tilting range of cab as it is being tilted. Always tilt cab all the way to end position and secure with safety strut.	AS60.80-Z-0001-01A
1	Tilt cab
	Notes on tilting the cab		AH60.80-N-0003-01A
2	Remove soundproofing at right on frame
3	Remove air intake hose (3) to crankcase breather line (2) as well as on turbocharger (1) and on air intake pipe (4)
4	Remove oil deposits by turning the rotor shaft (1.1) in turbocharger compressor housing
	Checking
5	Check exhaust gas turbocharger compressor housing and compressor turbine wheel for damage	 Possibly also replace turbocharger (1): 
		Without code (MZ4) Turbobrake	AR09.40-W-6020D
		With code (MZ4) Turbobrake	AR09.40-W-6020DA
6	Check air intake manifold (4), air intake hose (3) and exhaust gas turbocharger compressor housing for oil deposits
	Notes for evaluation of turbocharger in the event of engine blue smoke.		AH09.40-N-0001-01A
7	Check rotor shaft (1.1) for easy and uniform operation	 Possibly also replace turbocharger (1): 
		Without code (MZ4) Turbobrake	AR09.40-W-6020D
		With code (MZ4) Turbobrake	AR09.40-W-6020DA
8	Check axial and radial play for rotor shaft (1.1)		AR09.40-W-5910-01C
		Axial play of rotor shaft	*BE09.40-N-1001-01D
		Radial play of rotor shaft	*BE09.40-N-1002-01D
			*001589532100
			*363589022100
			*366589002105
		Feeler gauge
		 Possibly also replace turbocharger (1): 
		Without code (MZ4) Turbobrake	AR09.40-W-6020D
		With code (MZ4) Turbobrake	AR09.40-W-6020DA
	Install
9	Check condition of sealing surfaces, air intake hose (3) and clamps; replace if necessary
10	Attach air intake hose (3) to crankcase breather line (2) as well as on turbocharger (1) and on air intake pipe (4)		*BA09.00-N-1001-01B
			*BA09.00-N-1002-01B
			*BA09.00-N-1003-01B
 Danger!	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
11	Start engine and perform an engine test run
12	Check area of air intake hose (3) for leaks then stop engine	 Visual inspection.
13	Install soundproofing on frame on the right
 Danger!	Risk of injury caused by body parts being pinched or crushed as cab is tilted	Ensure that no one is within tilting range of cab as it is being tilted. Always tilt cab all the way to end position and secure with safety strut.	AS60.80-Z-0001-01A
14	Lower cab
	Notes on tilting the cab		AH60.80-N-0003-01A

Check values for turbocharger

Number	Designation		Engine 457.9


BE09.40-N-1001-01D	Axial play of rotor shaft	mm	0.1
BE09.40-N-1002-01D	Radial play of rotor shaft	mm	0.9

 Air intake, air charging, general

Number	Designation		Engine 457.9


BA09.00-N-1001-01B	Air intake hose clamp on air intake pipe	Nm	4.5
BA09.00-N-1002-01B	Clamp, air intake hose to turbocharger	Nm	4.5
BA09.00-N-1003-01B	Clamp, air intake hose to crankcase breather line	Nm	4.5

363 589 02 21 00

Extension

Dial indicator holder

Dial indicator

001 589 53 21 00

366 589 00 21 05

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