Remove/install coolant pump - AR20.10-P-1271MMB
ENGINE 157, 278 in MODEL 216, 221
MODIFICATION NOTES
| 16.7.13 | Tightening procedure for coolant pump, added | Operation step 9 | AR20.10-P-1280-01KH |
Shown on model 216.373 with code (487) Active Body Control (ABC)
| Remove/install | |||
| 1 | Remove fan unit | AR20.40-P-5050MM | |
| 2 | Remove poly-V belt | AR13.20-P-0001MMB | |
| 3 | Remove coolant thermostat (2) | AR20.10-P-2460MMB | |
| 4 | Remove charge air ducts | AR09.41-P-8620MMB | |
| 5.1 | Detach ABC hydraulic pump (4) with bracket on the timing case cover and on coolant pump (1) and place with attached pressure line (7) to one side | ENGINE 157, 278 in MODEL 216, 221 with CODE 487 (Active Body Control (ABC)) | |
| AR32.50-P-0030MMB | |||
| 5.2 | Remove upper guide pulley on timing case cover | ENGINE 157, 278 in MODEL 216, 221 without CODE 487 (Active Body Control (ABC)) | |
| AR13.20-P-0001MMB | |||
| 6 | Remove guide pulleys (3, 5) on oil filter housing and on coolant pump (1) | AR13.20-P-0001MMB | |
| 7 | Detach turbocharger coolant lines to coolant pump (1) | AR20.20-P-7440MMB | |
| 8 | Remove oil dipstick guide tube (6) | ENGINE 278 in MODEL 216, 221 without CODE M005 (4MATIC) | |
| 9 | Remove screw/bolts for coolant pump (1) Coolant pump tightening procedure | AR20.10-P-1280-01KH | |
| Bolt plan for coolant pump |
AR20.10-P-1271-03MMB | ||
| *BA20.10-P-1001-01W | |||
| 10 | Remove coolant pump (1) from timing case cover | ||
| Clean | |||
| 11 | Clean sealing surfaces on coolant pump (1) and timing case cover | AR01.00-P-0050-01A | |
| Loctite 7200 | *BR00.45-Z-1038-04A | ||
| Loctite 7063 cleaning spray (150 ml) | *BR00.45-Z-1046-04A | ||
| 12 | Install in the reverse order | ||
| 13 | Check cooling system for leaktightness | AR20.00-P-1010SX | |
| 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 | |
| 14 | Conduct engine test run and check coolant pump (1) for leaktightness |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | ENGINE 157 | ENGINE 278 | |||
|---|---|---|---|---|---|---|
| BA20.10-P-1001-01W | Bolt, coolant pump to timing case cover/cylinder crankcase | M7 | Stage 1 | Nm | 2 | 5 |
| Stage 2 | Nm | 14 | 14 | |||
| M8 | Stage 1 | Nm | 20 | 10 | ||
| Stage 2 | Nm | - | 20 | |||
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1038-04A | Loctite 7200 | Henkel Loctite Deutschland GmbH |
| BR00.45-Z-1046-04A | Loctite 7063 cleaning spray (150 ml) | A 001 986 71 71 10 |