Remove/install oil pan

AR01.45-P-7500FD

Remove/install oil pan

25.03.2020

Engine

112, 113 in model 129

Modification notes

24.03.2020

Document completely revised.

1

Engine compartment paneling

10

Right engine mount

2

Fan

11

Left engine mount

3

Fan shroud

12

Screw

4

Air filter

13

Heat shield

6

Air intake pipe

14

Oil pan top section

7

Oil pan bottom section

B40

Oil sensor (oil level, temperature and quality)

8

Oil pipe

B2/5

Hot film mass air flow sensor

9

Screw

 Danger

Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC.

No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Warning

Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating area of mechanical components when moving components.

AS00.00-Z-0009-01A

 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

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 Caution

Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil

Wear protective gloves, protective clothing and safety glasses.
Do not pour transmission oil into beverage bottles.

AS00.40-Z-0001-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

Notes on automatic transmission

Engine 113 in model 129 with transmission 722.6

AH27.19-P-0001-01NKB

 

Remove/install

1

Remove ground line of battery.

AR54.10-P-0003A

Topical note

Notes on battery

AH54.10-P-0001-01A

2

Lift vehicle with lifting platform.

AR00.60-P-1006A

3

Remove lower engine compartment lining (1).

AR61.20-P-1105AB

 Only install lower engine compartment lining (1) after leak test.

4

Drain off engine oil and collect with suitable container.

 Engine 112.910/911/912/913/914/915/917/920/921/922/923/940/941/942/943/944/946/947/949/954/955/960/961/970/972/973 in model 129
Engine 113.940/941/942/943/944/960/961/963/965/967/968/969/980/981/984/986/992/995 in model 129Oil drain screw to oil pan

*BA01.45-P-1003-01B

 Engine oil

*BF18.00-P-1001-01H

5

Detach air filter (4) vertically upwards from cylinder head covers and remove.

6

Release and disconnect electrical connector of fan (2).

In vehicles with electric fan (2).

7

Remove fan (2).

AR20.40-P-5660C

8

Remove fan shroud (3).

9

Remove hot film MAF sensor (B2/5) with air intake pipe (6).

AR07.07-P-1454AG

10

Remove brackets of automatic transmission oil lines at oil pan bottom section (7) and oil pan top section (14).

Engine 112 in model 129 with transmission 722.6
Engine 113 in model 129 with transmission 722.6

 M61

*BA00.10-P-1002-04A

11

Remove automatic transmission oil lines at transmission bell housing on right and left, place automatic transmission oil lines to one side and collect oil with suitable container.

Engine 112 in model 129 with transmission 722.6
Engine 113 in model 129 with transmission 722.6

 Installation: Replace seals.

 Banjo bolt or union nut, oil cooler line to torque converter and transmission housing

*BA27.55-P-1002-01B

12

Seal connections with suitable stop plugs.

 Record plug

*129589009100

13

Remove oil pan bottom section(7).

AR01.45-P-7555VA

14

Release and disconnect electrical connector from oil sensor (oil level, temperature, and quality) (B40).

15

Remove screws (9) from engine mounts (10, 11) at front at front axle carrier.

 Engine 112.923 in model 129.059
Engine 112.943 in model 129.064
Engine 113.961 in model 129.068Bolt, front engine mount to front axle carrier

*BA22.10-P-1001-01L

16

Remove bolt at cylinder head cover and remove oil pipe (8) from oil dipstick.

 Installation: Replace sealing ring and cable tie.

 Screw/bolt, cylinder head cover

*BA01.20-P-1001-01E

17

Attach engine carrier.

 Commercially available devices/tools
Blitz Rotary M30

18

Lift engine.


Engine and its detachable parts may not be in contact with body.
Body, engine or detachable parts on engine will otherwise be damaged.


Do not subject coolant lines to stress.
Otherwise damage and leaks can occur.

19

Remove screw (12) from left engine mount (11) at engine carrier.

 Engine 112.923 in model 129.059
Engine 112.943 in model 129.064
Engine 113.961 in model 129.068Bolt, front engine mount to engine support

*BA22.10-P-1004-01L

20

Remove left engine mount (11) with heat shield (13).

 Installation: Anti-twist lock (arrow) at left engine mount (11) must sit in retaining groove (arrow) of engine carrier.

 Installation: Cutout in heat shield (13) must be seated in anti-twist lock of left engine mount (11).

21

Remove oil pan top section (14).

Bolt plan for oil pan

AR01.45-P-7500-06F

Notes on sealant path for oil pan

Motor 113

AH01.45-P-0001-01CD

Notes on sealant path for oil pan

Motor 112

AH01.45-P-0001-01C

 Installation: Apply sealant and observe notes on sealant path.

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

 Remove oil pan top section (14) in direction of travel towards front and slightly turn crankshaft in direction of engine rotation if necessary.

 Engine 112.910/911/912/913/914/915/917/920/921/922/923/940/941/942/943/944/946/947/949/954/955/960/961/970/972/973 in model 129
Engine 113.940/941/942/943/944/960/961/963/965/967/968/969/980/981/984/986/992/995 in model 129Bolt, oil pan to cylinder crankcase

*BA01.45-P-1001-01B

Sealant, Loctite 5970, 50 ml

*BR00.45-Z-1013-01A

 Application gun

*112589002500

22

Clean sealing surfaces at oil pan top section (7) and at crankcase.

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

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

23

Install in the reverse order.

24

Check engine oil level and correct if necessary.



Check engine oil level with special tool

Engine 112 in model 129

AP18.00-P-1810MA



Check engine oil level using on-board oil dipstick

AP18.00-P-1811MP

25

Check oil level in automatic transmission and correct if necessary.

Engine 112 in model 129 with transmission 722.6
Engine 113 in model 129 with transmission 722.6

AR27.00-P-0100AC

26

Read out fault memory and delete if necessary.



AD00.00-P-2000-04A

If faults have been stored due to assembly or inspection work:



Clear these from the fault memory once the work has been completed. Diagnosis Manual Volume 2, Index 0: Connecting and using test equipment.

 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

27

Perform engine test run; while doing so, check function and leak tightness of the engine.

28

Install lower engine compartment lining (1).

AR61.20-P-1105AB

29

Lower vehicle with vehicle lift.

AR00.60-P-1006A

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number

Designation

8.8

10.9

BA00.10-P-1002-04A

M61

Nm

9

13

 Crankcase ventilation, cylinder head cover

Number

Designation

Engine 112

Engine 113

BA01.20-P-1001-01E

Screw/bolt, cylinder head cover

Stage 1

Nm

9

9

Stage 2

°

–

–

 Oil pan

Number

Designation

Engine 112.910/ 911/912/913/914/ 915/917/920/921/ 922/923/940/941/ 942/943/944/945/ 946/947/949/951/ 954/955/960/961/ 970/972/973/976

Engine 113.940/ 941/942/943/944/ 960/961/962/963/ 965/967/968/969/ 980/981/982/984/ 986/992/995

BA01.45-P-1001-01B

Bolt, oil pan to cylinder crankcase

M6

Nm

9

9

M8

Nm

20

20

 Oil pan

Number

Designation

Engine 112.910/ 911/912/913/914/ 915/917/920/921/ 922/923/940/941/ 942/943/944/945/ 946/947/949/951/ 954/955/960/961/ 970/972/973/976

Engine 113.940/ 941/942/943/944/ 960/961/962/963/ 965/967/968/969/ 980/981/982/984/ 986/992/995

BA01.45-P-1003-01B

Oil drain screw to oil pan

M14

Nm

30

30

 Engine mounts, engine supports

Number

Designation

Engine 112.923/943, 113.961 in model 129.059/ 064/068

BA22.10-P-1001-01L

Bolt, front engine mount to front axle carrier

Nm

25

 Engine mounts, engine supports

Number

Designation

Engine 112.923/943, 113.961 in model 129.059/ 064/068

BA22.10-P-1004-01L

Bolt, front engine mount to engine support

Nm

55

 Transmission oil cooling

Number

Designation

Transmission 722.6 in model 129, 202, 208

BA27.55-P-1002-01B

Banjo bolt or union nut, oil cooler line to torque converter and transmission housing

Stage 1

Nm

20

Stage 2

°

-

Hexalobular bolt

Nm

-

 Engine lubrication

Number

Designation

ENGINE 112 (except 112.916/953/975) shortened maintenance interval

ENGINE 112 (except 112.916/953/975) Maximum maintenance interval

BF18.00-P-1001-01H

Engine oil

Filling capacity with oil filter

Liter

8,0

8,0

Filling capacity without oil filter

Liter

7,5

7,5

Sheet

BB00.40-P-0229-01A

-

Sheet

BB00.40-P-0229-03A

-

Sheet

BB00.40-P-0229-05A

BB00.40-P-0229-05A

 Engine lubrication

Number

Designation

ENGINE 113.940/ 941/942/943/960/ 961/962/969/982 Shortened maintenance interval

ENGINE 113.940/ 941/942/943/960/ 961/962/969/982 Maximum maintenance interval

BF18.00-P-1001-01H

Engine oil

Filling capacity with oil filter

Liter

8,0

8,0

Filling capacity without oil filter

Liter

–

–

Sheet

BB00.40-P-0229-01A

-

Sheet

BB00.40-P-0229-03A

-

Sheet

BB00.40-P-0229-05A

BB00.40-P-0229-05A

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