Replace rear radial shaft sealing ring

AR03.20-P-3003MNA

Replace rear radial shaft sealing ring

18.02.2020

Engine

176 in model 463

up to model year 2019

Engine

177 in model 205

Engine

178 in model 190

Modification notes

25.08.2016

Screw/bolt, rear of bottom half of crankcase to crankcase/oil pan

BA01.40-P-1002-01ZA

07.11.2016

Special tool 273 589 00 43 00, added.

Operation step 10

Shown on ENGINE 177

1

Bolts

2

Radial shaft sealing ring

3

Cover

 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-P-5000-01A



Remove

1

Remove drive plate

AR03.30-P-8001MNA

2

Mark rear perforated disc relative to the crankcase

Engine 176 in model 463
up to model year 2019
Engine 177 in model 205

3

Remove rear perforated plate

Engine 176 in model 463
up to model year 2019
Engine 177 in model 205

4

Remove bolt (1)

5

Remove rear radial shaft sealing ring (2) with cover (3) from crankcase

 The rear radial shaft sealing ring (2) and cover (3) form a unit and can only be replaced together.



Install

6

Wet the sealing lip of the rear radial shaft sealing ring (2) with engine oil



Specified engine oils (service) - Overview

BB00.40-P-0223-02A

7

Clean sealing surfaces of the new cover (3)

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

8

Clean sealing surfaces of the oil pan and the crankcase

AR01.00-P-0050-01A


Do not use any sharp-edged tools or abrasive paper.
The sealing surface will be damaged otherwise.

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

9

Apply sealant to cover (3)

Notes on distribution of sealant on crankcase end cover

AH01.40-P-1000-09MNA

Sealant, Loctite 5970, 50 ml

*BR00.45-Z-1013-01A

10

Put rear radial shaft sealing ring (2) with lid (3) on crankcase and screw in screw/bolts (1)

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

Topical note

Notes on threaded connections with aluminum screws/bolts

AH00.00-P-0006-01RM

 The rear radial shaft sealing ring (2) and cover (3) form a unit and can only be replaced together.

 Screw/bolt, rear of bottom half of crankcase to crankcase/oil pan

*BA01.40-P-1002-01ZA

 Insertion tool

*273589004300

11

Position rear perforated plate in such a way that the applied markings coincide during removal

Engine 176 in model 463
up to model year 2019
Engine 177 in model 205

12

Install drive plate

AR03.30-P-8001MNA

13

Check engine oil level; correct if necessary



Engine 176 in model 463
up to model year 2019

AP18.00-P-0101GE



Engine 177 in model 205
Engine 178 in model 190

AP18.00-P-1811MP

 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

14

Carry out an engine test run and check engine for leak tightness

 Crankcase, timing case cover, end cover

Number

Designation

Engine 176

Engine 177

BA01.40-P-1002-01ZA

Screw/bolt, rear of bottom half of crankcase to crankcase/oil pan

Aluminum screw/bolt

Stage 1

Nm

2

2

Stage 2

°

45

45

Steel screw/bolt

Nm

9

9

 Crankcase, timing case cover, end cover

Number

Designation

Engine 178

BA01.40-P-1002-01ZA

Screw/bolt, rear of bottom half of crankcase to crankcase/oil pan

Aluminum screw/bolt

Stage 1

Nm

2

Stage 2

°

45

Steel screw/bolt

Nm

9

Repair materials

Number

Designation

Order number

BR00.45-Z-1013-01A

Sealant, Loctite 5970, 50 ml

A 003 989 98 20 10

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09