Remove/Install Engine With Front Axle Carrier - AR01.10-P-2500MRP
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Engine 264 in model 253
with code M005 (Vehicles with 4MATIC/all-wheel drive)
MODIFICATION NOTES
| 04.02.2020 | Operation step adapted. | Operation step 47. |
Shown on right side of vehicle with code B01 (48V technology)
Shown on right side of vehicle with code B01 (48V technology)
Shown with code B01 (48V technology)
Shown with code B01 (48V technology)
Shown with code B01 (48V technology)
| 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 contact with 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 | |
| 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 | |
| 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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| Risk of burn injuries , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust. | Wear protective clothing and safety glasses. Use the extraction system. Move people out of the danger zone. | AS49.00-Z-0001-01A | |
| 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 | |
| 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 | |
| Notice | Notes on threaded connections fastened using a tightening angle-based tightening process | AH00.00-P-0020-01A | |
| Notice | Protect air conditioning circuit and components from moisture when carrying out repair work | AH83.30-P-0005-01KOA | |
| Notice | Notes on self-locking nuts and bolts | AH00.00-P-0001-01KOA | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notice | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Notice | Notes on bolted connections with self tapping screws | AH00.00-P-0007-01SF | |
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Notes on AIRmatic | Engine 264 in model 253 with code 489 (AIR BODY CONTROL) with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AH32.22-P-1000-02LW | |
| General information on work on gasoline direct injection system | AH07.00-P-2000-01A | ||
| Use of engine no. when installing reconditioned engines and factory-new replacement engines or crankcases | AH01.10-P-0001-01A | ||
| Notes on repair work on suspension components | AH00.00-P-0100-01A | ||
| Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | AH00.00-P-0015-01CW | ||
| Remove/install | |||
| 1 | Secure vehicle against rolling away, shift transmission to neutral position, and release parking brake. | ||
| 2 | Move front wheels to straight-ahead position and fix steering wheel in place with holding device. | Fig 4 | |
| 3 | Secure vehicle on vehicle lift. | AR00.60-P-1006A | |
| 4 | Reduce pressure of air suspension. | Engine 264 in model 253 with code 489 (AIR BODY CONTROL) with code M005 (Vehicles with 4MATIC/all-wheel drive) |
|
| AD00.00-P-2000-04B | |||
| Fig 3 | |||
| 5 | Relieve fuel pressure using diagnostic system. | ||
Actuation → Actuate the fuel pump. |
AD00.00-P-2000-04B | ||
| 6 | Remove upper engine cover. | AR01.10-P-2405MRI | |
| 7 | Disconnect the ground line for the on-board electrical system battery (G1). | AR54.10-P-0003LW | |
| 8 | Discharge air conditioning system. | AR83.30-P-1760LW | |
| 9 | Drain coolant of the engine cooling circuit. | AR20.00-P-1142MRI | |
| 10 | Drain coolant of low-temperature circuit. | AR09.41-P-6834MRI | |
| 11 | Remove engine air intake duct upstream of air filter housing. | ||
| 12 | Remove front sections of front fender liners. | AR88.10-P-1300LW | |
| 13 | Remove front bumper. | AR88.20-P-2000LW | |
| 14 | Remove front cross struts. | Engine 264 in model 253 (except 253.99) with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR61.10-P-5143LWO |
| 15 | Secure radiator package with suitable means against falling down. | ||
| 16 | Remove bolts (1a) from bracket of low-temperature circuit circulation pump 1 (M43/6) and place low-temperature circuit circulation pump 1 (M43/6) with connected lines to one side. | Do not crush or kink or subject lines to tension. This would lead to damage to the lines and can impair their function. |
|
| 17 | Remove front bolts from brackets (1b) to impact absorbers and/or to dampings and remove brackets (1b). | *BA62.30-P-1004-01H | |
| *BA62.30-P-1003-01H | |||
| 18 | Remove bolts (2a) on left and right and open brackets. | ||
| 19 | Remove bolts (2b) on left and right and remove impact absorbers and/or dampings. | *BA62.30-P-1006-01H | |
| 20 | Remove fuel feed line (3a) and seal openings with suitable stop plugs. | Fig 2 | |
| Fig 6 | |||
| 21 | Release, disconnect purge line (3b) and seal openings with suitable stop plugs. | Fig 6 | |
| 22 | Remove center exhaust system. | AR49.10-P-7283MRI | |
| 23 | Remove propeller shaft. | Engine 264 in model 253 (except 253.99) with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR41.10-P-0050LWX |
| 24 | Remove steering shaft from steering gear. | Engine 264 in model 253 with code M005 (Vehicles with 4MATIC/all-wheel drive) except code 700 (Vehicle production location China) |
AR46.10-P-8000-01LW |
| Engine 264 in model 253 with code 700 (Vehicle production location China) with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR46.10-P-8000-01LWA | ||
| *BA46.10-P-1003-01N | |||
| Fig 1 | |||
| 25 | Remove refrigerant line (4a) at bottom left at condenser, pull out of condenser and seal openings with suitable stop plugs. | ||
| Compressor oils (specification 362.1) | BB00.40-P-0362-01A | ||
| *BA83.30-P-1002-01Q | |||
| Fig 5 | |||
| Fig 6 | |||
| 26 | Remove coolant lines (4b) at bottom. | AR20.20-P-7441-01RQ | |
| 27 | Remove coolant line (4c) at fitting to charge air cooler. | AR20.20-P-7441-01RQ | |
| 28 | Release and disconnect electrical connectors from steering gear. | ||
| 29 | Remove wiring harness from front axle carrier and place to one side. | Fig 7 | |
| 30 | Expose electrical wiring harness from front right brakepad wear sensor (S10/2) up to connector coupling (1d) and remove. | ||
| 31 | Release, disconnect electrical wiring harnesses from wheel carrier and/or suspension strut at connector couplings (1e) and remove cable duct (1f) from body. | ||
| 32 | Remove brake caliper with brakepads and/or front right brakepad wear sensor (S10/2) and secure with connected lines to vehicle so that free of tension. | AR42.10-P-0070LWA | |
| 33 | Remove upper transverse control arms from steering knuckles. | Counterhold relevant ball head and do not use an impact wrench. Ball head and/or steering knuckle will otherwise be damaged. Secure the steering knuckle again folding away. Otherwise, damage to the joints will occur. |
*BA33.20-P-1006-01U |
| 34 | Detach suspension struts from spring links. | Engine 264 in model 253 with code M005 (Vehicles with 4MATIC/all-wheel drive) except code 489 (AIR BODY CONTROL) |
AR32.25-P-1017LW |
| Engine 264 in model 253 with code 489 (AIR BODY CONTROL) with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR32.25-P-1017LWL | ||
| *BA32.25-P-1002-04P | |||
| 35 | Remove refrigerant line (5a) at separating point in left front engine compartment, seal openings with suitable stop plugs and secure refrigerant line (5a) to engine so that free of tension. | ||
| Compressor oils (specification 362.1) | BB00.40-P-0362-01A | ||
| *BA83.30-P-1004-01Q | |||
| Fig 5 | |||
| Fig 6 | |||
| 36 | Remove coolant hose (5b) at firewall. | AR20.20-P-7441-01RQ | |
| 37 | Remove vacuum line (5c). | ||
| 38 | Remove coolant hoses (5d). | AR20.20-P-7441-01RQ | |
| 39 | Disconnect bleed line (5e) at separating point and at coolant expansion reservoir and remove. | AR20.20-P-7441-01RQ | |
| 40 | Remove bleed line (5f) from engine. | AR20.20-P-7441-01RQ | |
| 41 | Remove coolant hoses (5g). | Hose clamp pliers with wire cable |
AR20.20-P-7441-01RQ |
| 42 | Remove bracket (5h), remove coolant line (5k) from charge air cooler and place to one side. | AR20.20-P-7441-01RQ | |
| *BA20.10-P-1005-01CA | |||
| 43 | Remove, expose line (5m) of inerting system at fitting at bulkhead and attach to engine so that free of tension. | Engine 264 in model 253 with code 2U8 (Alternative refrigerant) with code M005 (Vehicles with 4MATIC/all-wheel drive) Do not crush or kink or subject lines to tension. This would lead to damage to the lines and can impair their function. |
|
| 44 | Disconnect engine wiring harness for removal of engine. | AR15.18-P-1000-05MRI | |
| *BA54.18-P-1001-02C | |||
| *BA27.10-P-1009-04H | |||
| *BA00.19-P-1043-01E | |||
| 45 | Support front axle carrier, secure engine transmission unit with suitable means against slipping and falling down. | ||
| 000 588 03 62 00 Lifting platform | WS01.00-P-0091A | ||
| 46 | Remove rear engine carrier. | AR22.10-P-1160LWB | |
| 47 | Remove struts of front axle carrier at longitudinal members. | *BA33.10-P-1002-01Q | |
| *BA33.10-P-1001-01Q | |||
| 48 | Lower engine with front axle carrier. | ||
| 000 588 03 62 00 Lifting platform | Ensure that engine and its detachable parts are not in contact with body panels or major assemblies. This will result in damage to the component parts. Do not crush or kink or subject lines to tension. This would lead to damage to the lines and can impair their function. |
WS01.00-P-0091A | |
| 49 | Install in the reverse order. | ||
| Concluding tasks | |||
| 50 | Check engine oil level and correct if necessary. | ||
| AP18.00-P-1812MKI | |||
| 51 | Connect vehicle diagnosis system, read out fault memory and clear if necessary. | ||
| AD00.00-P-2000-04B | |||
| 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 | |
| 52 | Perform engine test run. While doing so, check engine for proper operation and leak tightness. | ||
| 53 | Perform wheel alignment measurement. | AR40.20-P-0200LW |
GROUND POINTS
| Number | Designation | Model 253 (except 253.99) as of model year 2020 | Model 253 (except 253.99) up to model year 2020 | ||
|---|---|---|---|---|---|
| BA00.19-P-1043-01E | Nut, ground line to pin/underfloor | M8 | Nm | 20 | 20 |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 264 | ||
|---|---|---|---|---|
| BA20.10-P-1005-01CA | Screw, coolant hose clamp to coolant thermostat | M6 | Nm | 8 |
AUTOMATIC TRANSMISSION COMPLETE
| Number | Designation | Transmission 725.0/1 | |
|---|---|---|---|
| BA27.10-P-1009-04H | Screw/bolt, heat shield to oil pan | Nm | 9 |
SUSPENSION STRUTS
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA32.25-P-1002-04P | Nut, suspension strut to spring control arm | Stage 1 | Nm | 95 |
| Stage 2 | ∠° | 45 | ||
FRONT AXLE CARRIER
| Number | Designation | Model 253 | |
|---|---|---|---|
| BA33.10-P-1001-01Q | Bolt, front axle carrier to longitudinal member | Nm | 180 |
FRONT AXLE CARRIER
| Number | Designation | Model 253 | |
|---|---|---|---|
| BA33.10-P-1002-01Q | Mount, support (strut) | Nm | 110 |
WHEEL CONTROL, HUB
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA33.20-P-1006-01U | Nut, steering knuckle to transverse control arm | Stage 1 | Nm | 50 |
| Stage 2 | ∠° | 45 | ||
STEERING SHAFT
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA46.10-P-1003-01N | Self-locking bolt, steering coupling to lower steering shaft | Stage 1 | Nm | 25 |
| Stage 2 | ∠° | 90 | ||
WIRING HARNESS
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA54.18-P-1001-02C | Nut, positive line to busbar on firewall | M6 | Nm | 8 |
| M8 | Nm | 16 | ||
CROSS MEMBER AND FRONT REINFORCEMENT
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA62.30-P-1003-01H | Bolt, strut to cross member | M8 | Nm | 20 |
CROSS MEMBER AND FRONT REINFORCEMENT
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA62.30-P-1004-01H | Bolt, strut to soundproofing | M8 | Nm | 20 |
CROSS MEMBER AND FRONT REINFORCEMENT
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA62.30-P-1006-01H | Bolt, soundproofing to front axle carrier | M8 | Nm | 23 |
AIR CONDITIONING
| Number | Designation | Model 253 | |
|---|---|---|---|
| BA83.30-P-1002-01Q | Nut, line to condenser | Nm | 12 |
AIR CONDITIONING
| Number | Designation | Model 253 | ||
|---|---|---|---|---|
| BA83.30-P-1004-01Q | Nut, refrigerant line to connecting point | M6 | Nm | 12 |