Remove/install fuel injectors sealing package on rail - AR07.03-P-0004-02MM

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2016 Mercedes-Benz E63 S AMG, 2016 Mercedes-Benz E400, 2016 Mercedes-Benz E350, 2016 Mercedes-Benz E300, and 2016 Mercedes-Benz E250. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 133, 152.9, 157, 176, 177, 178, 270, 274, 276, 278

Modification notes

Fig 1: Identifying Drift (278 589 01 15 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1028-04A	Assembly cleaner	Adolf Wurth GmbH & Co. KG

Do not use sharp-edged tools.

The sealing surfaces may be damaged and leaks may occur otherwise.

The sealing package may only be used once.

Remove sealing package

Press together the ends of the snap ring (1) using needle nose pliers and remove the snap ring (1).
Remove metal support disk (2) using a plastic drift (02).
Remove slit plastic support ring (3), sealing ring (4) and white support ring (5) using a plastic drift (02).

Fig 2: Removing Slit Plastic Support Ring, Sealing Ring And White Support Ring Using Plastic Drift
Courtesy of MERCEDES-BENZ USA
Clean mount for fuel injector on rail (6). The injector mount absolutely with assembly cleaner and blown out with compressed air.
Exclusively use assembly cleaner and clean, lint-free rags.

Leaks can occur otherwise.

When cleaning the fuel connections must be held downwards so that no dirt can find its way into the openings.

Damage can occur to the fuel injection system otherwise.

Install sealing package
Remove slit plastic support ring (3), sealing ring (4) and white support ring (5) on the plastic drift (02).
The slitted plastic support ring (3) must be mounted as represented.

Leaks will occur for wrong assembly.

Ensure that flat side of the black slit plastic support ring (3) sits on the sealing ring (4).
Push sleeve (03) onto the slit plastic support ring (3), sealing ring (4), white support ring (5) and plastic drift (02).
Place the plastic drift (02) and sleeve (03) on the rail (6) mount.
Push the slit plastic support ring (3), sealing ring (4) and white support ring (5) with plastic drift (02) into the rail (6) all the way.

Fig 3: Inserting Slit Plastic Support Ring, Sealing Ring And White Support Ring
Courtesy of MERCEDES-BENZ USA
Remove plastic drift (02) and sleeve (03) from the rail (6).
Check
The slit plastic support ring (3) must sit evenly under the lower edge (1k) in the mount for the rail (6).
Place the metal support disc (2) on the slit plastic support ring (3) and press into the rail (6) using the plastic drift (02).
The profiled side (2a) of the metal support disc (2) must point outwards.
Open metal drift (01); to do this push stem (01a) to the rear in the direction of the handle (01b).
Insert snap ring (1) in the metal drift (01).
The ends of the snap ring (1) must sit in the cutout (01c) of the metal drift (01) and must later lie on the profiled side (2a) of the metal support disc (2).
Close metal drift (01).
The markings (01m) on the metal drift (01) must be flush with each other.

Fig 4: Metal Support Disc, Plastic Support Ring And Snap Ring
Courtesy of MERCEDES-BENZ USA
Press metal drift (01) into the rail (6) mount.
Push metal drift (01) into the rail (6) until the snap ring (1) audibly engages.
Pull metal drift (01) out of the rail (6).
Check
The snap ring (1) must be located in the groove (1n) of the rail (6) and must allow itself to be twisted easily.
The ends of the snap ring (1) must sit in the cutout (2b) on the metal support disc (2).