Remove/install oil pan

AR01.45-P-7500MT

Remove/install oil pan

18.02.2020

Engine

270 in model 117, 156, 176, 242, 246.2

1

Oil pan

1s

Bolts

2

Crankcase

21

Clip

22

Bracket

23

Bracket

25

Bracket

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

 

Remove/install

1

Drain engine oil



Engine 270.910 in model 117, 156, 176, 246.2

AP18.00-P-0101NK



Engine 270.920 in model 117, 156, 176, 242, 246.2

AP18.00-P-0101NL

2

Remove poly-V belt

AR13.20-P-0001MT

3

Disconnect electrical connection on A/C compressor

4

Detach refrigerant line bracket on alternator

5

Detach A/C compressor at crankcase (2) and oil pan (1) and secure against falling down

AR83.55-P-5310MT

6

Detach clamp (21) on catalytic converter

Engine 270 in model 156

AR49.10-P-5500NKX

Engine 270 in model 117, 176, 242, 246.2

AR49.10-P-5500MT

7

Detach bracket (22) on crankcase (2)

Engine 270 in model 156

AR49.10-P-5500NKX

Engine 270 in model 117, 176, 242, 246.2

AR49.10-P-5500MT

8

Detach bracket (23) at oil pan (1)

Engine 270 in model 156

AR49.10-P-5500NKX

Engine 270 in model 117, 176, 242, 246.2

AR49.10-P-5500MT

9

Remove lower torsion bar linkage

AR22.10-P-1130NKB

10

Unclip electrical connection for oxygen sensor upstream of CAT and disconnect

11

Unclip electrical line for oxygen sensor upstream of catalytic converter at bracket

12

Remove bracket (25) on cylinder head

Engine 270 in model 117, 176, 242, 246.2

AR49.10-P-5500MT

Engine 270 in model 156

AR49.10-P-5500NKX

13

Remove heat shield above ATL

AR09.40-P-6025MT

14

Detach CAT at ATL

AR09.40-P-6025MT

15

Swivel CAT with exhaust pipe to the side

16

Disconnect electrical line at oil level check switch, unclip at oil pan (1) and place to one side

17.1

Remove screw/bolts from manual transmission on oil pan (1)

Engine 270 in model 117, 156, 176, 242, 246.2 with transmission 711

 Screw/bolt, transmission to engineBolt, transmission to engine

*BA26.10-P-1001-01I

17.2

Remove screw/bolts from dual-clutch transmission at oil pan (1)

Engine 270 in model 117, 156, 176, 242, 246.2 with transmission 724

 Bolt, transmission to engine

*BA27.10-P-1017-04F

18

Remove screw/bolts (1s) from oil pan (1)

Tightening procedure for oil pan bolts

AR01.45-P-7500-01MT

 Installation: Pay attention to different screw/bolt lengths and tightening procedure.

 Bolt, oil pan to crankcase/timing case cover

*BA01.45-P-1001-01T

19

Unfasten oil pan (1) from crankcase (2) and pull out downwards

Notes on sealant path for oil pan

AH01.45-P-0001-01MMA


Do not drive any tools between the crankcase (2) and the oil pan (1) to release them.
The sealing surfaces can be damaged otherwise.

 If necessary, heat oil pan (1) in area around the sealing surfaces using a heat gun.

 Installation: Apply sealant to sealing surface of oil pan (1) and, in doing so, observe notes on sealant path on the oil pan (1).

Sealant, Loctite 5970, 50 ml

*BR00.45-Z-1013-01A

20

Remove oil level check switch

When installing a new oil pan (1).

AR18.40-P-5113MT

21

Check sealing ring of guide tube for oil measuring stick for damage; replace if necessary

AR18.40-P-0815-01MR



Clean

22

Clean sealing surfaces on oil pan (1) and crankcase (2)

AR01.00-P-0050-01A

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

Loctite 7200

*BR00.45-Z-1038-04A

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

23

Install in the reverse order



Check

24

Check engine oil level and correct if necessary



Engine 270.910 in model 117, 156, 176, 246.2

AP18.00-P-0101NK



Engine 270.920 in model 117, 156, 176, 242, 246.2

AP18.00-P-0101NL

 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

25

Carry out engine test run, checking the engine for leaktightness and proper operation

 Oil pan

Number

Designation

Engine 270

BA01.45-P-1001-01T

Bolt, oil pan to crankcase/timing case cover

M6

Nm

11

 Manual transmission complete

Number

Designation

Transmission 711.631/632

Transmission 711.642/643/645/647

BA26.10-P-1001-01I

Bolt, transmission to engine

Nm

39

39

 Automatic transmission complete

Number

Designation

Transmission 724.0

BA27.10-P-1017-04F

Bolt, transmission to engine

Nm

39

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-1038-04A

Loctite 7200

Henkel AG & Co. KGaA
http://www.loctite.de

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09