Remove/Install Timing Chain Tensioner - AR05.10-P-7800MSA
Engine 256.9 in model 213, 238, 257, 290
MODIFICATION NOTES
| 13.07.2020 | Addition of an operation step variant for removing/installing the catalytic converter/exhaust gas aftertreatment unit | Operation step 1.1/1.2 | |
| 13.07.2020 | Replaced DIN basic data with BA22.10-P-1003-02A - heat shield screw on engine carrier | Operation step 2 | |
| 31.07.2020 | Special tool 000 589 93 63 00 assembly tool added | Operation step 5 |
| 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 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 | |
| Topical note | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Remove/install | |||
| 1.1 | Remove the catalytic converter. | Engine 256.9 in model 213, 238 up to model year 2020 Engine 256.9 in model 257, 290 |
|
| AR49.20-P-0100MSA | |||
| 1.2 | Remove exhaust gas aftertreatment unit. | Engine 256.9 in model 213, 238 as of model year 2020 | |
| AR49.20-P-1500MSA | |||
| 2 | Remove screws (9) and remove heat shield (8). | *BA22.10-P-1003-02A | |
| *BA22.10-P-1005-02A | |||
| *BA22.10-P-1004-02A | |||
| 3 | Remove screws (7) and remove holder (6). | *BA49.10-P-1007-02P | |
| 4 | Remove screws (2) and remove cap (1). | ||
| *BA05.10-P-1006-01MRT | |||
| 5 | Remove chain tensioner (4) and collect escaping engine oil using rags. | Only reuse chain tensioner (4) if it has had no noticeable problems in previous operation and no chain drive components have been replaced. Engine damage will occur otherwise. |
|
| *BA05.10-P-1003-01MRT | |||
| Fig 2 | |||
| Check | |||
| 6 | Check whether the chain tensioner (4) is fully extended. | If chain tensioner (4) has not fully extended, ↓ replace chain tensioner (4). |
|
| 7 | Install in the reverse order. | ||
| 8 | Check engine oil level and correct if necessary. | ||
| Engine 256.9 in model 213, 238, 290 | AP18.00-P-1812MKI | ||
| Engine 256.9 in model 257 | AP18.00-P-1812BKI |
CAMSHAFT POSITIONER, TIMING CHAIN DRIVE
| Number | Designation | Engine 256.9 | |
|---|---|---|---|
| BA05.10-P-1003-01MRT | Chain tensioner to crankcase | Nm | 80 |
CAMSHAFT POSITIONER, TIMING CHAIN DRIVE
| Number | Designation | Engine 256.9 | |
|---|---|---|---|
| BA05.10-P-1006-01MRT | Screw, chain tensioner housing cover to crankcase | Nm | 8 |
ENGINE SUPPORT (ENGINE SIDE)
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA22.10-P-1003-02A | Bolt, heat shield to engine support | Nm | 12 |
ENGINE SUPPORT (ENGINE SIDE)
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA22.10-P-1004-02A | Screw, heat shield to crankcase/catalytic converter bracket/engine mount heat shield | Nm | 8 |
ENGINE SUPPORT (ENGINE SIDE)
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA22.10-P-1005-02A | Bolt, heat shield to timing case | Nm | 8 |
EXHAUST SYSTEM
| Number | Designation | Model 213 with engine 256 | Model 238 with engine 256 | |
|---|---|---|---|---|
| BA49.10-P-1007-02P | Nut/bolt, holder for catalytic converter to crankcase | Nm | 20 | 20 |
EXHAUST SYSTEM
| Number | Designation | Model 257 with engine 256 | Model 290 with engine 256 | |
|---|---|---|---|---|
| BA49.10-P-1007-02P | Nut/bolt, holder for catalytic converter to crankcase | Nm | 20 | 20 |