AR07.03-W-6831C | Remove/install nozzle holder combination | 19.9.06 |
ENGINE 904.904 ## as of 40488 in MODEL 670
ENGINE 904.908 ## as of 40488,
904.914 /923 /936
in MODEL 668, 670
ENGINE 904.9## ## as of 40488 in MODEL 673, 674, 676
ENGINE 904.9 in MODEL 374, 375, 958, 970, 972, 975, 976
ENGINE 906.9 in MODEL 374, 958, 970, 972, 974, 975, 976
ENGINE 906.9 in MODEL 374, 375, 950, 952, 953, 954, 958
ENGINE 906.9 in MODEL 957 except CODE (MS8) Natural gas engine
W07.03-1008-09
1 Nozzle holder combination
2 Threaded insert
3 Impact extractor
4 Bolt (up to engine end no. 046892)
5 Spherical washer (up to engine end no. 046892)
6 Spherical collar bolt (as of engine end no. 046893)
11 O-ring
12 Pressure pipe connection
13 Pressure screw
14 Injection line
15 Constant throttle cap
7 Retaining clamp
8 O-ring
9 Sealing ring (engine 904.9, engine 906.9 up to engine end no. 056812)
10 Sealing sleeve (engine 906.9 from engine end no. 056813)
W07.03-1009-01
Sealing sleeve
1 Nozzle holder combination
10 Sealing sleeve (engine 906.9 from engine end no. 056813)
20.1 Assembly tool (for nozzle holder head)
20.2 Assembly tool (for sealing sleeve)
Modification notes
19.3.04 | Work procedure revised, work step greasing the sealing ring or the sealing sleeve on the nozzle holder combination no longer needed and special tool altered | Steps 13.1 and 13.2 |
| Removing | ||
Danger! | Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel and risk of injury to eyes and skin caused by contact with fuel | No fire, sparks, open flames or smoking. Wear protective clothing when handling fuel. | |
1 | Remove cylinder head cover | ||
2 | Remove injection line (14) | ||
3 | Unscrew pressure screw (13) and remove pressure pipe connection (12) | ||
4 | Remove retaining clip (7) | ||
5 | Attach the threaded insert (2) to the nozzle holder combination (1) with an impact extractor (3) | | |
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6 | Remove the nozzle holder combination (1) with an impact extractor (3) | Nozzle holder combination (1) must not be disassembled. | |
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7 | Remove the threaded insert (2) and impact extractor (3) at the nozzle holder combination (1) | | |
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8 | Remove sealing ring (9) at nozzle holder combination (1) | Only for engine 904.9 and engine 906.9 up to engine end no. 056812. | |
9 | Pull sealing sleeve (10) out of cylinder head | Only for engine 906.9 from engine end no. 056813 if the sealing sleeve (10) remains in the cylinder head while removing the nozzle holder combination (1). | |
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| Install | ||
10 | Clean nozzle holder combination (1) and perform visual inspection | Only when reinstalling used nozzle holder combination (1). Clean contact surface of the sealing ring (9) or the sealing sleeve (10) using a brass brush. | |
Clean hole-type nozzle and contact surface of nozzle holder combination (1) with ultrasonic nozzle cleaning equipment. | |||
Replace nozzle holder combination (1) if necessary. | |||
11 | Pull off sealing sleeve (10) at nozzle holder combination (1) | Only when reinstalling the worn nozzle holder combination (1) for engine 906.9 from engine end no. 056813. | |
12 | Install new O-ring (8) in the nozzle holder combination (1) and coat with grease | Only when reinstalling removed nozzle holder combination (1) | |
13.1 | Place new seal (9) on nozzle holder combination (1) | Only when reinstalling the worn nozzle holder combination (1) for engine 904.9 and engine 906.9 up to engine end no. 056812. | |
The small ring surface on sealing ring (9) must point towards the nozzle holder combination (1). | |||
13.2 | Press new sealing sleeve (10) onto nozzle holder combination (1) with assembly tool (20.1, 20.2) | Only when reinstalling worn nozzle holder combination (1) for engine 906.9 from engine end no. 056813. | |
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| Sealing sleeve of nozzle holder combination - altered | Engine 906.9 from engine end no. 337788 | |
14 | Install nozzle holder combinations (1) | Pay attention to the installation position of the nozzle holder combination (1) relative to the pressure pipe connection (12). | |
Turn nozzle holder combination (1) with the clamp (7) in the cylinder head until the interference-fit ball (arrow) in the clamp (7) is aligned with the locating element in the end cover (15) of the constant throttle. | |||
15.1 | Tighten tensioning arm (7) and spherical washer (5) with bolt (4) | Up to engine end no. 046892 | |
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15.2 | Tighten retaining clip (7) fully with spherical collar bolt (6) | As of engine end no. 046893 | |
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16 | Install new O-ring (11) on pressure pipe connection (12) and coat lightly with grease | ||
17 | Install pressure pipe connection (12) and tighten thrust bolt (13) | The interference-fit ball (arrow) at the pressure pipe connection (12) must be inserted into the slot (arrow) in the cylinder head. | |
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18 | Install injection line (14) | ||
19 | Install cylinder head cover |
Diesel injection system with unit pumps (MR/PLD)
Number | Designation | Engine Engine | ||
BA07.15-N-1003-01A | Bolt, clamp for nozzle holder combination to cylinder head | Hexagon socket | Nm | 30 |
Twelve-point with radius seat | Nm | 35 | ||
BA07.15-N-1005-01A | Thrust bolt, pressure pipe connection to cylinder head | Nm | 45 | |
904 589 00 63 00
Extraction tool
Threaded insert
Impact extractor
Assembly tool
355 589 01 63 00
906 589 02 63 00
906 589 03 63 00
Repair materials
Number | Designation | Order number |
BR00.45-Z-1051-06A | Hot bearing grease | A 000 989 81 51 |