Remove/Install Coolant Pump - AR20.10-P-1271MFC
Engine 260 in model 118, 177, 247
Except Code B01 (48V technology)
Fig 1: Coolant Pump Components Location - Engine 260 In Model 247 Except Code B01 (Shown On Model 177)
Shown on model 177 with engine 260 except code M016 (Performance-enhanced engine)
Shown on engine except code M016 (Performance-enhanced engine)
| 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 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 | |
| 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 coolant | AH20.00-P-2080-01KOA | |
| Notice | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Notice | Notes on threaded connections fastened using a tightening angle-based tightening process | AH00.00-P-0020-01A | |
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Notes on coolant level | AH20.00-P-1142-01CW | ||
| Remove/install | |||
| 1 | Drain off coolant. | AR20.00-P-1142MFC | |
| 2 | Remove the alternator. | Engine 260 in model 118, 177, 247 except code B01 (48V technology) | AR15.40-P-5032MFC |
| 3 | Remove heat shield from exhaust gas turbocharger. | AR09.40-P-6045MFC | |
| 4 | Remove oxygen sensor downstream of catalytic converter. | AR07.04-P-0085MFC | |
| 5 | Unscrew screw/bolts (1, 2) and remove oil return feed line (3). | *BA09.40-P-1002-02G | |
| Fig 4 | |||
| 6 | Unclip electrical wiring harness at cooling pipe (4) (arrows). | If cable attachments are damaged, ↓ Replace cable attachments. |
|
| 7 | Remove nut (5), unscrew screw (7) and remove support (6). | *BA09.40-P-1005-02G | |
| *BA09.40-P-1004-02G | |||
| 8 | Remove coolant hose (8) at coolant connection (23) and cooler. | Fig 2 | |
| Fig 3 | |||
| 9 | Remove coolant hose (9) at coolant connection (23). | Fig 3 | |
| Fig 2 | |||
| 10 | Unscrew bolts/screw (10, 22) of coolant lines (11, 12) and oil feed line (13) at exhaust gas turbocharger, at bracket and at crankcase. | *BA09.40-P-1003-02G | |
| *BA09.40-P-1002-02G | |||
| 11 | Remove coolant lines (11, 12) and oil feed line (13). | Fig 4 | |
| 12 | Remove coolant hose (14) from coolant line (15). | Fig 2 | |
| Fig 4 | |||
| Fig 3 | |||
| 13 | Unscrew bolts (16) at coolant line (15) at cylinder head, coolant pump (21) and at crankcase. | *BA20.10-P-1003-01AC | |
| 14 | Unscrew bolts (17) of coolant pipe (18) at crankcase and water pump. | *BA20.10-P-1003-01AC | |
| 15 | Unscrew bolts (19) at coolant connection (23). | *BA20.10-P-1002-01AC | |
| 16 | Place coolant connection (23) with coolant pipe (18) to one side. | Do not press coolant connection (23) too far to side. Coolant pipe (18) will otherwise be damaged. |
|
| 17 | Unscrew bolts (20) at coolant pump (21). | *BA20.10-P-1001-01AC | |
| 18 | Remove coolant pump (21) from crankcase. | ||
| 19 | Remove coolant hose (14) from coolant pump (21). | If coolant pump (21) is replaced. | |
| 20 | Install in the reverse order. | ||
| 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 | |
| 21 | Perform engine test run and check engine cooling system in area of water pump for leaks. |
TURBOCHARGER
| Number | Designation | Engine 260 | ||
|---|---|---|---|---|
| BA09.40-P-1002-02G | Bolt, feed line/return line to turbocharger/crankcase | Stage 1 | Nm | 8 |
| Stage 2 | ∠° | 60 | ||
TURBOCHARGER
| Number | Designation | Engine 260 | |
|---|---|---|---|
| BA09.40-P-1003-02G | Bolt, coolant return line to oil line | Nm | 5 |
TURBOCHARGER
| Number | Designation | Engine 260 | |
|---|---|---|---|
| BA09.40-P-1004-02G | Nut, turbocharger support brace to turbocharger | Nm | 30 |
TURBOCHARGER
| Number | Designation | Engine 260 | ||
|---|---|---|---|---|
| BA09.40-P-1005-02G | Bolt, turbocharger support brace to crankcase | Stage 1 | Nm | 15 |
| Stage 2 | ∠° | 90 | ||
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 260 except code 9U8 (Control code - Major assembly technical further development) | Engine 260 with code 9U8 (Control code - Major assembly technical further development) | ||
|---|---|---|---|---|---|
| BA20.10-P-1001-01AC | Screw, coolant pump to timing case/crankcase/oil pan | Stage 1 | Nm | 20 | 20 |
| Stage 2 | ∠° | - | 30 | ||
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 260 except code 9U8 (Control code - Major assembly technical further development) | Engine 260 with code 9U8 (Control code - Major assembly technical further development) | |
|---|---|---|---|---|
| BA20.10-P-1002-01AC | Bolt, ball valve to coolant pump | Nm | 10 | 10 |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 260 except code 9U8 (Control code - Major assembly technical further development) | Engine 260 with code 9U8 (Control code - Major assembly technical further development) | |
|---|---|---|---|---|
| BA20.10-P-1003-01AC | Bolt, feed pipe to coolant pump | Nm | 10 | 10 |