Remove/install engine with transmission

AR01.10-P-2401MFC

Remove/install engine with transmission

22.01.2020

Engine

260 in model 118, 177, 247 with transmission 724.0

Modification notes

13.11.2019

Document completely revised.

Shown on model 177 with engine 260 without code M016 (performance-enhanced engine)

1

Charge air hose

8

Coolant hose

2

Coolant line

9

Electrical connector

3

Coolant line

10

Coolant hose

4

Coolant hose

11

Refrigerant line

5

Inerting line

12

Separation point

6

Clamp

13

Refrigerant line

7

Charge air hose

14

Screw

Shown on model 177 with engine 260 without code M016 (performance-enhanced engine)

15

Nuts

34

Coolant hose

33

Separation point

Shown on model 177 with engine 260 without code M016 (performance-enhanced engine)

16

Vacuum line

28

Separation point

17

Fuel hose

29

Electrical connector

18

Separation point

35

Bracket

19

Coolant hose

36

Bolts

27

Bolts

Shown on model 177 with engine 260 without code M016 (performance-enhanced engine)

30

Electrical connector

32

Nuts

31

Cap

20

Bracket

21

Bolts

22

Bolts

23

Connecting carrier

24

Crossmember

25

Engine stabilizer mount

Shown on model 177 with engine 260 with code M016 (performance-enhanced engine)

40

Coolant hose

Shown on model 177 with engine 260 with code M016 (performance-enhanced engine)

41

Coolant hose

Shown on model 177 with engine 260 with code M016 (performance-enhanced engine)

42

Expansion rivet

43

Bracket

44

Bracket

Shown on model 177 with engine 260 without code M016 (performance-enhanced engine)

26

Bolts

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 Danger

Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion due to formation of ignitable refrigerant/air mixtures

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0007-01A

 Danger

Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.

No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

 Danger

Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure

Keep all ignition sources out of hazard area.
Do not carry out any work on system when it is pressurized.

AS07.16-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 to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

 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 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 influencing load ratios when removing major assemblies

AH00.60-P-0001-01A

Topical note

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A

Topical note

Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30-N-0005-01A

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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

General information on work on gasoline direct injection system

AH07.00-P-2000-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A

Use of engine no. when installing reconditioned engines and factory-new replacement engines or crankcases

AH01.10-P-0001-01A

 

Remove/install

1

Put transmission into neutral position.

2

Secure vehicle against rolling away and release parking brake.

3

Secure vehicle on the vehicle lift and lift.

AR00.60-P-1006A

4

Remove front module.

Engine 260 in model 118, 177, 247 with transmission 724.0

Engine 260 in model 118, 177, 247.0 with transmission 724.0

AR88.30-P-1064MFA

 Installation: Only install lower engine compartment paneling after leak test.

5

Remove air filter housing.

AR09.10-P-1150MFC

6

Remove battery carrier.

AR54.10-P-0028MFA

7

Remove upper engine cover.



AP01.10-P-2405-01C

 Installation: Only install upper engine cover after the leak test.

8

Remove clamps (6), remove inerting line (5) from the separating point, and seal openings with suitable stop plugs.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code 2U8 (Alternative refrigerant)

AR86.10-P-0119MFC

 Record plug

*129589009100

9

Discharge air conditioning system.

AR83.30-P-1760MFA

10

Drain off coolant.

AR20.00-P-1142MFC

11

Drain off low-temperature circuit coolant.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M016 (Uprated engine)

AR09.41-P-6834MFC

12

Remove the coolant expansion reservoir.

AR20.30-P-4949MFD

13

Remove charge air hose (1) and seal openings with protective covers.

Engine 260 in model 118, 177, 247 with transmission 724.0
except code M016 (Uprated engine)

AR09.41-P-1311-01AL

 Set of protective caps

*001589029100

14

Remove coolant lines (2, 3) and seal openings with suitable stop plugs and protective covers.

AR20.20-P-7441-01RQ

 Record plug

*129589009100

 Set of protective covers

*001589019100

15

Remove coolant hoses (4, 8, 10) from the cooler and seal openings with protective covers.

AR20.20-P-7441-01RQ

 Set of protective covers

*001589019100

16

Remove coolant hoses (40, 41) from the low-temperature circuit cooler and seal openings with protective covers.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M016 (Uprated engine)

AR20.20-P-7441-01RQ

 Set of protective covers

*001589019100

17

Release and disconnect electrical connector (9) of fan unit.

18

Remove charge air hose (7) and seal openings with protective covers.

Engine 260 in model 118, 177, 247 with transmission 724.0
except code M016 (Uprated engine)

AR09.41-P-1311-01AL

 Set of protective caps

*001589029100

19

Separate refrigerant line (11) at separating point (12) and seal openings with suitable stop plugs.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing ring and moisten with compressor oil.

 Nut, refrigerant line connecting point

*BA83.30-P-1002-01T

 Record plug

*129589009100

20

Remove screw (14) and remove refrigerant line (13) from the engine mount.

Engine 260 in model 118, 177, 247 with transmission 724.0
except code M016 (Uprated engine)

 Screw, refrigerant line to engine mount/body

*BA83.30-P-1004-01T

21

Remove nuts (15) from the capacitor.

 Nut, refrigerant line to condenser

*BA83.30-P-1007-01T

22

Remove refrigerant lines and seal openings using suitable stop plugs.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing rings and moisten with compressor oil.

 Record plug

*129589009100

23

Remove radiator package upward out of the elastomer bearings on the crossmember (24), place down on a suitable base, and capture escaping coolant with rags.

24

Remove coolant hose (34) from the separating point (33) and seal openings with protective covers.

AR20.20-P-7441-01RQ

 Set of protective caps

*001589009100

25

Remove vacuum line (16) from the vacuum pump and seal openings with suitable stop plugs.

 Set of plugs

*199589009800

26

Unclip vacuum line (16) from the charge air cooler.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M016 (Uprated engine)

 Set of plugs

*199589009800

27

Release and disconnect purge line at separating point (18) and seal with suitable stop plugs.

 Record plug

*129589009100

28

Remove noise insulation of the high-pressure pump.

29

Remove fuel hose (17) from the high-pressure pump and seal openings with suitable stop plugs.

 Pliers for click clamps

*177589003700

 Record plug

*129589009100

30

Unclip fuel hose (17) from the charge air cooler.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M016 (Uprated engine)

31

Remove coolant hose (19) from the separating point (28) and seal openings with protective covers.

AR20.20-P-7441-01RQ

 Set of protective caps

*001589009100

32

Release and disconnect electrical connector (29) from the automatic transmission and expose electrical wiring harness.

33

Unclip electrical wiring harness from the bracket (35) of the air filter unit (arrows).

34

Remove screws (36) from the bracket (35) and remove bracket (35).

 Screw/bolt, air filter housing bracket to body

*BA09.10-P-1001-01Q

35

Release and disconnect electrical connector (30).

36

Remove cover (31).

37

Remove nuts (32), remove electrical wiring harness from the stud bolts, and place to one side.

 Nut, starter wiring harness to current limiter

*BA54.10-P-1006-01D

38

Remove brackets (20) from the crossmember (24).

39

Remove expansion rivet (42).

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M016 (Uprated engine)

 Clip remover

*452589016300

40

Remove bolts (21).

 Bolt, radiator support to mounting support

*BA62.30-P-1004-02O

41

Remove screws(22) and remove connecting carriers(23) together with crossmember(24).

 Bolt, connecting carrier to front axle carrier/radiator support

*BA62.30-P-1003-02O

42

Remove lower engine stabilizer mount (25).

AR22.10-P-1155MFC

43

Remove propeller shaft.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR41.10-P-0050MFA

44

Remove screws (26) from the separating point of the exhaust system.

 Bolt, front exhaust system to center exhaust system

*BA49.10-P-1006-02Q

45

Remove front axle shafts.

AR33.30-P-0620MFC

46

Remove heat shield of front axle drive shaft.

AR49.00-P-1000-05MFC

 Bolt, heat shield to engine carrier/crankcase/oil pan/cylinder head

*BA22.10-P-1002-02E

47

Remove coolant hose package on the engine side from the separating points (arrows) and seal openings with protective covers.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M016 (Uprated engine)

AR20.20-P-7441-01RQ

 Set of protective covers

*001589019100

 Set of protective caps

*001589029100

 Hose clamp pliers

*454589003700

48

Unclip coolant hose package from the brackets (43, 44) and remove.

Engine 260 in model 118, 177, 247 with transmission 724.0
with code M016 (Uprated engine)

49

Install engine support fixture to remove engine transmission unit.

AR01.10-P-0106MFA

50

Remove right engine mount.

AR22.10-P-1102MFD

51

Remove screws (27) from the transmission mount.

 Screw, transmission mount to body/transmission

*BA22.10-P-1010-03P

52

Move engine transmission unit with lifting platform out of vehicle in forward direction.



000 588 03 62 00 Lifting platform

WS01.00-P-0091A

 Support fixture

*177589026200

53

Install in the reverse order.



Check

 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

54

Perform engine test run and check engine and transmission for proper operation and leak tightness while doing so.

55

Install lower engine compartment lining.

AR61.20-P-1105MFA

56

Check engine oil level and correct if necessary.



AP18.00-P-1812MFA


Never pour in engine oil to above the maximum value.
Engine damage will occur otherwise.

57

Check headlamp adjustment and correct.



Engine 260 in model 118 with transmission 724.0

AP82.10-P-8260Y



Engine 260 in model 177 with transmission 724.0

AP82.10-P-8260N



Engine 260 in model 247 with transmission 724.0

AP82.10-P-8260AO

58

Install upper engine cover.



AP01.10-P-2405-01C

 Air filter

Number

Designation

Engine 260

BA09.10-P-1001-01Q

Screw/bolt, air filter housing bracket to body

M8

Nm

20

 Engine support (engine side)

Number

Designation

Engine 260

BA22.10-P-1002-02E

Bolt, heat shield to engine carrier/crankcase/oil pan/cylinder head

M6

Nm

8

 Engine mount, engine support (engine side)

Number

Designation

Model 118, 177, 247

BA22.10-P-1010-03P

Screw, transmission mount to body/transmission

Nm

106

 Exhaust system

Number

Designation

Model 118 with engine 260

Model 177 with engine 260

BA49.10-P-1006-02Q

Bolt, front exhaust system to center exhaust system

M8

Nm

25

25

 Exhaust system

Number

Designation

Model 247 with engine 260

BA49.10-P-1006-02Q

Bolt, front exhaust system to center exhaust system

M8

Nm

25

 Battery

Number

Designation

Model 118

Model 177

BA54.10-P-1006-01D

Nut, starter wiring harness to current limiter

Nm

16

16

 Battery

Number

Designation

Model 247

BA54.10-P-1006-01D

Nut, starter wiring harness to current limiter

Nm

16

 Frond end with front reinforcement

Number

Designation

Model 118

Model 177

BA62.30-P-1003-02O

Bolt, connecting carrier to front axle carrier/radiator support

M8

Nm

16

16

 Frond end with front reinforcement

Number

Designation

Model 247

BA62.30-P-1003-02O

Bolt, connecting carrier to front axle carrier/radiator support

M8

Nm

16

 Frond end with front reinforcement

Number

Designation

Model 118

Model 177

BA62.30-P-1004-02O

Bolt, radiator support to mounting support

M8

Nm

16

16

 Frond end with front reinforcement

Number

Designation

Model 247

BA62.30-P-1004-02O

Bolt, radiator support to mounting support

M8

Nm

16

 Air conditioning

Number

Designation

Model 118

Model 177

BA83.30-P-1002-01T

Nut, refrigerant line connecting point

M6

Nm

12

12

M8

Nm

20

20

 Air conditioning

Number

Designation

Model 247

BA83.30-P-1002-01T

Nut, refrigerant line connecting point

M6

Nm

12

M8

Nm

20

 Air conditioning

Number

Designation

Model 118

Model 177

BA83.30-P-1004-01T

Screw, refrigerant line to engine mount/body

M6

Nm

8

8

 Air conditioning

Number

Designation

Model 247

BA83.30-P-1004-01T

Screw, refrigerant line to engine mount/body

M6

Nm

8

 Air conditioning

Number

Designation

Model 118

Model 177

BA83.30-P-1007-01T

Nut, refrigerant line to condenser

M6

Nm

12

12

 Air conditioning

Number

Designation

Model 247

BA83.30-P-1007-01T

Nut, refrigerant line to condenser

M6

Nm

12