ar0940b5910b

Test turbocharger

Type ar · topic 09.40 · version 0203 · 2020-05-06

Applies to: Engine 904.9 in model 368.0/1, 382.1, 384.06, 685.284 Engine 906.9 (except 906.999) in model 368.0, 382.1 Engine 924.9 (except 924.925) in model 368.0/1, 384.06/07, 685.282/284/289/290, 979.2 Engine 926.9 (except 926.942/950) in model 368.0/1, 382.1, 384.06/07, 634.0

Where it sits

Function group 1 Engine › 09 Air intake, turbocharging › 09.40 Turbocharger — Series 368 (models 0**, 1**) · Series 382 (models 1**) · Series 384 (models 06*, 07*) · Series 634 (models 0**) · Series 685 (models 282, 284, 289, 290) · Series 904 (models 9**) · Series 906 (models 900, 901, 902, 903, 910, 911, 912, 913, 915, 916, 917, 918, 919, 920, 921, 922, 923, 924, 925, 926, 927, 928, 929, 930, 931, 932, 933, 934, 935, 936, 937, 938, 939, 940, 941, 944, 945, 946, 947, 948, 949, 950, 951, 952, 953, 954, 955, 956, 960, 961, 963, 964, 965, 966, 967, 970, 972, 973, 974, 975, 977, 982, 983, 984, 985, 987, 988, 989, 990, 991, 992, 993, 994, 995, 998) · Series 979 (models 2**)

EinPAS 15 Engine › 15.30 Air intake/charging › 15.30.51 Exhaust gas turbocharger — Series 368 (models 0**, 1**) · Series 382 (models 1**) · Series 384 (models 06*, 07*) · Series 634 (models 0**) · Series 685 (models 282, 284, 289, 290) · Series 904 (models 9**) · Series 906 (models 900, 901, 902, 903, 910, 911, 912, 913, 915, 916, 917, 918, 919, 920, 921, 922, 923, 924, 925, 926, 927, 928, 929, 930, 931, 932, 933, 934, 935, 936, 937, 938, 939, 940, 941, 944, 945, 946, 947, 948, 949, 950, 951, 952, 953, 954, 955, 956, 960, 961, 963, 964, 965, 966, 967, 970, 972, 973, 974, 975, 977, 982, 983, 984, 985, 987, 988, 989, 990, 991, 992, 993, 994, 995, 998) · Series 979 (models 2**)

Also applies to engines/gearboxes: 924 910, 924 912, 924 913, 924 915, 924 916, 924 917, 924 919, 924 920, 924 922, 924 923, 924 929, 924 930, 924 931, 924 932, 924 933, 924 934, 924 935, 924 936, 924 937, 924 941, 924 942, 924 971, 924 972, 924 981, 924 982, 924 985, 924 989, 924 990, 924 991, 924 993, 924 994, 924 995, 924 996, 924 997, 924 998, 924 999, 926 900, 926 910, 926 911, 926 912, 926 913, 926 914, 926 915, 926 916, 926 917, 926 918, 926 919, 926 920, 926 921, 926 924, 926 925, 926 926, 926 927, 926 928, 926 929, 926 930, 926 932, 926 933, 926 934, 926 935, 926 937, 926 938, 926 941, 926 945, 926 946, 926 947, 926 948, 926 949, 926 956, 926 959, 926 960, 926 961, 926 969, 926 970, 926 971, 926 972, 926 973, 926 974, 926 975, 926 976, 926 985, 926 986, 926 987, 926 988, 926 989, 926 990, 926 991, 926 992, 926 993, 926 994, 926 995, 926 996, 926 997, 926 998, 926 999

AR09.40-B-5910B

Test turbocharger

24.04.2020

Engine

904.9 in model 368.0/1, 382.1, 384.06, 685.284

Engine

906.9 (except 906.999) in model 368.0, 382.1

Engine

924.9 (except 924.925) in model 368.0/1, 384.06/07, 685.282/284/289/290, 979.2

Engine

926.9 (except 926.942/950) in model 368.0/1, 382.1, 384.06/07, 634.0

Test turbocharger

1

Exhaust gas turbocharger

2

Rotor shaft

3

Control fin

4

Control fin axle

5

Operating unit

B09.40-0002-06

Check

Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

1

Start the engine

Access for maintenance and repair work execution vary according to the body type/manufacturer.
For buses and special vehicles, refer to the body builder instructions

2

Check the exhaust gas turbocharger (1) for uncommon noise and vibration

Uncommon noise and vibration may be caused by damage to the exhaust gas turbocharger rotors and lack of leak tightness in the exhaust, charging and intake air systems.

3

Check the leak tightness in the pipes between the air filter and the exhaust gas turbocharger (1). Correct if necessary

The entry of foreign material may cause damage to the exhaust gas turbocharger rotors (1).

4

Check the charging system leak tightness on the pipes, correct if necessary

Leaks can be checked by touch and through the application of soap foam along the piping, connections and hoses.

5

Check the leak tightness of the exhaust system

Leaks are detected through discoloration by heating of the leakage area.

6

Stop the engine

Wait for the engine cooling.

7

Remove the flange with the engine brake system


.

AR14.15-B-6302A

8

Remove the air intake hose of the exhaust gas turbocharger (1)


.

AR09.10-B-8030XA

9

Check the rotors for damages caused by foreign material


.

AR09.40-B-6020D

Foreign material getting in the exhaust or intake air system will damage the exhaust gas turbocharger rotors. Small particles wear off the leading edge of the blades. Larger, hard particles tend to tear or cut the blades.
Soft material, as paper, cotton waste, or rubber parts, will bend the blades backward, in the opposite direction of the rotor speed.

If occurs damage caused by foreign material, a complete cleaning in the exhaust manifold and in the intake air system is essential.

Installation: Replace the damaged exhaust gas turbocharger (1).

10

Check the free operation of the rotor shaft (2), and the radial and end plays


.

AR09.40-B-5910-01B

.

AR09.40-B-6020D

The rotor shaft (2) of the exhaust gas turbocharger (1) must rotate smoothly and uniformly.
Usually, the excessive radial and/or end play causes friction between the rotors and the housings of the exhaust gas turbocharger, resulting in noisy operation.

In the event of damage, replace the exhaust gas turbocharger (1).

11

Check the control fin (3), control fin axle (4) and operating unit (5) conditions


..

AR09.40-B-5910-02B

.

AR09.40-B-6020D

In the event of control fin (3) damage, crimped control fin axle (4) or excessive play/damage/leaks in the operating unit (5), replace the exhaust gas turbocharger (1).

Pressure pump

*124589152101

12

Install the flange with the engine brake system


.

AR14.15-B-6302A

13

Install the air intake hose of the exhaust gas turbocharger


.

AR09.10-B-8030XA

Test turbocharger

124 589 15 21 01

Pressure pump

Referenced documents