Remove/install engine with front axle carrier - AR01.10-P-2500RKC
ENGINE 279 in MODEL 231
| 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 to skin or eyes from hydraulic fluid spraying out under pressure. Risk of poisoning from swallowing hydraulic fluid. | Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses. | AS00.00-Z-0013-01A | |
| Notes on self-locking nuts and bolts | AH00.00-N-0001-01A | ||
| Notes on Active Body Control suspension | AH32.50-P-0001-01N | ||
| Remove/install | |||
| 1 | Set selector lever to position "N" and release parking brake | ||
| 2 | Turn front wheels to straight-ahead position and secure steering wheel with holding device | Otherwise the clock spring contact will be destroyed. |
Figure |
| 3 | Disconnect ground connection for battery | AR54.10-P-0003RK | |
| 4 | Secure vehicle on vehicle lift | AR00.60-P-0100TX | |
| 5 | Remove air filter housing | Engine 279 in model 231 with code 460 (Canada version) with code 494 (US version) |
AR09.10-P-1150MUC |
| Engine 279 in model 231 except code 460 (Canada version) except code 494 (US version) |
AR09.10-P-1150RKC | ||
| 6 | Suction refrigerant out of air conditioning | Engine 279 in model 231 except code 2U8 (Refrigerant R-1234yf) |
AR83.30-P-1760NKB |
| Engine 279 in model 231 with code 2U8 (Refrigerant R-1234yf) |
AR83.30-P-1760YF | ||
| 7 | Drain coolant from low-temperature circuit | AR09.41-P-6834RKC | |
| 8 | Drain coolant | AR20.00-P-1142RKC | |
| 9 | Remove front components of exhaust system | AR49.10-P-7100RKC | |
| 10 | Detach front diagonal struts | *BA61.10-P-1011-01H | |
| 11 | Remove screws/bolts (2) and remove bulkhead (1) at the upper center | ||
| 12 | Disconnect electrical connections from engine wiring harness (3) on ME-SFI [ME] control unit (N3/10). | ||
| 13 | Expose engine wiring harness (3) between ME-SFI [ME] control unit (N3/10) and engine | ||
| 14 | Disconnect coolant hose (4) | ||
| 15 | Detach vacuum hoses (5) on charge air manifold (6) and place to one side | ||
| 16 | Detach purge line (7) on check valve (8) and place to one side | ||
| 17 | Disconnect coolant hose (9) on the right, coolant hose on the left (10) | ||
| 18 | Remove coolant hose (11) | AR20.20-P-7441-01RQ | |
| 19 | Disconnect coolant hose (12) from coolant line (13) and place to one side | ||
| 20 | Relieve fuel pressure over diagnostic socket | AR07.03-P-1460-01RKC | |
| *BA07.03-P-1005-01G | |||
| Figure | |||
| 21 | Disconnect fuel hose (14) at fuel line (15) and close off openings using suitable grommets | *BA07.03-P-1004-01G | |
| Figure | |||
| 22 | Clamp off hose (16) and disconnect hose (16) at radial piston pump (17) | Fig 13 | |
| 23 | Remove nut (19), disconnect refrigerant line (18) and close off openings using suitable grommets | *BA83.30-P-1020-01A | |
| Figure | |||
| 24 | Detach coolant hose (20) from coolant circulation pump (M13/5) | ||
| 25 | Secure radiator against falling down | ||
| 26 | Raise vehicle | AR00.60-P-1000TX | |
| 27 | Detach screw/bolts (22), disconnect refrigerant line (21) from condenser and close off openings using suitable grommets | *BA83.30-P-1022-01A | |
| Figure | |||
| 28 | Unclamp oil hoses (23) and disconnect from engine oil cooler (24) | *BA18.30-P-1007-01K | |
| Fig 13 | |||
| 29 | Disconnect oil lines (25) at connection points (26) and close off openings using suitable grommets | ||
| 30 | Detach wheel-and-tire assembly at the front | ||
| AP40.10-P-4050EW | |||
| 31 | Remove fender liner in front fender | AR88.10-P-1300RK | |
| 32.1 | Relieve pressure in front axle ABC system | Engine 279 in model 231.### ## up to 021273 with code 487 (Active Body Control (ABC)) |
AR32.50-P-0001-01N |
| *BA32.50-P-1001-02B | |||
| 32.2 | Vent pressure in the ABC system using the diagnostic system | Engine 279 in model 231.### ## as of 021274 with code 487 (Active Body Control (ABC)) |
AR32.50-P-0001-01LF |
| AD00.00-P-2000-04A | |||
| 33 | Separate pressure line (27) | *BA32.50-P-1006-01C | |
| 34 | Disconnect coolant hose (28) from coolant pump (29) | ||
| 35 | Unplug electrical connections (30) at electric power steering actuator motor (A91m1) | ||
| 36 | Unclip electrical line (31) at front axle carrier (32) and place electrical line (31) to one side | ||
| 37 | Unplug electrical line (33) on fan (34) and place to one side | ||
| 38 | Detach coolant hose (35) on low-temperature circuit additional engine radiator (36) | ||
| 39 | Disconnect steering coupling | AR46.10-P-8000RK | |
| 40 | Remove screw/bolt (38) and bracket (37) | ||
| 41 | Remove heat shield (39) from transmission (40) | ||
| 42 | Disconnect connector (41) | ||
| 43 | Disconnect electrical connection (42) at transmission oil pump electric motor (M42) | ||
| 44 | Disconnect electrical connection (43) at intelligent servo module for DIRECT SELECT (A80) | ||
| 45 | Unclip electrical line (44) along the transmission (40) and place to one side | ||
| 46 | Unscrew screw/bolt (46) and remove cover (45) from firewall through-connection | ||
| 47 | Remove nuts (47) and remove electrical line (48) from stud bolt and place to one side | *BA54.15-P-1010-01A | |
| 48 | Disconnect ground line (49) at frame floor assembly | *BA00.19-P-1003-01A | |
| 49 | Remove screw/bolts on front axle suspension strut below | *BA32.25-P-1002-04N | |
| 50 | Remove front axle rpm sensors and expose electrical lines | *BA42.30-P-1001-01A | |
| 51 | Remove front axle brake caliper and fix in place on vehicle with the attached brake lines | AR42.10-P-0070RK | |
| 52 | Disconnect upper ball joint for transverse control arm on steering knuckle | *BA33.20-P-1006-01S | |
| 53 | Support front axle carrier using the lifting platform | AR01.10-P-2500-01A | |
| 54 | Remove engine crossmember with rear engine mount on frame floor assembly | AR22.10-P-1180RKC | |
| 55 | Detach drive shaft from transmission output flange | AR41.10-P-0050RK | |
| 56 | Remove screw/bolts (50) for cooler fastening console at front axle carrier | *BA33.10-P-1002-01O | |
| 57 | Remove front axle carrier screw/bolt (51) at longitudinal member | *BA33.10-P-1001-01O | |
| 58 | Install in the reverse order | ||
| 59 | Fill and bleed ABC system | Engine 279 in model 231 with code 487 (Active Body Control (ABC)) |
AR32.50-P-0021SX |
| 60 | Pour in coolant and ventilate engine cooling system | AR20.00-P-1142-04A | |
| Fig 8 | |||
| Fig 11 | |||
| Fig 10 | |||
| Fig 12 | |||
| 61 | Venting air from low-temperature circuit | AR20.00-P-1145H | |
| 62 | Perform wheel alignment check | AR40.20-P-0200R | |
| 63 | Read out fault memory; clear if necessary | ||
| AD00.00-P-2000-04A | |||
| Check | |||
| 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 | |
| 64 | Carry out an engine test run, checking the engine for proper operation and leaktightness |
GROUND POINTS
| Number | Designation | Model 231 | ||
|---|---|---|---|---|
| BA00.19-P-1003-01A | Right front frame floor assembly ground point | W15/1 | Nm | 9 |
INJECTION NOZZLES, INJECTION VALVES, FUEL LINES
| Number | Designation | Engine 279 | |
|---|---|---|---|
| BA07.03-P-1004-01G | Union nut, fuel hose to fuel line | Nm | 24 |
INJECTION NOZZLES, INJECTION VALVES, FUEL LINES
| Number | Designation | Engine 279 | ||
|---|---|---|---|---|
| BA07.03-P-1005-01G | Cap on diagnostic socket | Plastic | Nm | 2 |
| Metal | Nm | 15 | ||
OIL COOLING
| Number | Designation | Engine 279 | |
|---|---|---|---|
| BA18.30-P-1007-01K | Screw/bolt, feed line/return line to engine oil cooler | Nm | 9 |
SUSPENSION STRUTS
| Number | Designation | Model 231 | ||
|---|---|---|---|---|
| BA32.25-P-1002-04N | Nut, suspension strut for front axle to spring control arm | Stage 1 | Nm | 110 |
| Stage 2 | ∠° | 90 | ||
ACTIVE BODY CONTROL, LINES
| Number | Designation | Model 231 with code 487 | ||
|---|---|---|---|---|
| BA32.50-P-1001-02B | Bleed screw on soldered fitting in hydraulic line | M10 X 1 | Nm | 20 |
ACTIVE BODY CONTROL SUSPENSION
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA32.50-P-1006-01C | Union nut, connecting point for line to valve unit on front axle to line for hydraulic pump | Nm | 50 |
FRONT AXLE CARRIER
| Number | Designation | Model 231 | ||
|---|---|---|---|---|
| BA33.10-P-1001-01O | Bolt, front axle carrier to longitudinal member | Front | Nm | 140 |
| Center | Nm | 70 | ||
| Rear | Nm | 50 | ||
FRONT AXLE CARRIER
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA33.10-P-1002-01O | Bolt, front axle carrier to cooler mounting console | Nm | 20 |
WHEEL CONTROL, HUB
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA33.20-P-1006-01S | Nut, upper ball joint for upper transverse control arm to steering knuckle | Nm | 65 |
FRONT AXLE RPM SENSOR
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA42.30-P-1001-01A | Self-locking bolt, rpm sensor on front axle to steering knuckle | Nm | 8 |
FUSE AND RELAY BOX
| Number | Designation | Model 231 | ||
|---|---|---|---|---|
| BA54.15-P-1010-01A | Nut, positive line to through plating on firewall | M8 | Nm | 15 |
FRAME FLOOR ASSEMBLY
| Number | Designation | Model 231 | ||
|---|---|---|---|---|
| BA61.10-P-1011-01H | Bolt, front diagonal strut to front axle carrier | M10 | Nm | 60 |
| M12 | Nm | 110 | ||
AIR CONDITIONING
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA83.30-P-1020-01A | Nut, refrigerant line to expansion valve | Nm | 8 |
AIR CONDITIONING
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA83.30-P-1022-01A | Screw/bolt, line to condenser | Nm | 8 |