AR07.07-P-1454RT | Remove/install hot film mass air flow sensor together with air intake pipe | 14.4.05 |
ENGINE 113.971 in MODEL 251.075 /175
P07.07-2062-06
2 Electrical connector
3 Vent line
4 Vent line
5 Top catch
6 Bottom catch
7 Air intake connection
8 Lock
9 Sealing ring
B2/5 Hot film MAF sensor
| Remove/install | ||
Danger! | Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. | When moving components, ensure that no body parts or limbs are within the operating range of moving parts. | |
1 | Open engine hood and raise to vertical position | ||
2 | Remove the partition wall between the wheelhouse liners | ||
3 | Remove air filter housing | ||
4 | Remove the electrical connector (2) at the hot film mass air flow sensor (B2/5) | ||
5 | Detach vent line (3) from hot film mass air flow sensor (B2/5) | ||
6 | Release vent line (4) from bracket at hot film mass air flow sensor (B2/5). | ||
7 | Open top catch (5) at top of hot film mass air flow sensor (B2/5) | ||
8 | Use a hook to pull up bottom catch (6) at top of air intake connection (7) | To do this, press the hot film MAF sensor (B2/5) so far back to the rear that the bottom catch (6) cannot get locked again. | |
9 | Use a screwdriver to press down lock (8) on the air intake connection (7) | To do this, push the hot film mass air flow sensor (B2/5) as far back as possible, until the lock (8) cannot latch again. | |
10 | Detach the hot film MAF sensor (B2/5) from the throttle valve actuator | Installation: Check sealing ring (9), replace if required. Check the sealing ring between air inlet connection (7) and hot film mass air flow sensor , replace if required. Check the top catch (5), bottom catch (6) and lock (8). If required, replace the locks or air intake connections (7). | |
11 | Unclip the pneumatic line of the AIR management control system from the brackets at the air intake connection (7) | ||
12 | Install in the reverse order | ||
13.1 | Read out fault memory and erase if required | When replacing the hot film MAF sensor (B2/5). | |
| Connect STAR DIAGNOSIS and read out fault memory | ||
STAR DIAGNOSIS diagnosis system | |||
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near engine | Secure vehicle to prevent it from moving. | |
14 | Conduct engine test run and check the intake system for leaks | If a leak is found, determine the cause and rectify, otherwise engine malfunctions may result. |
Commercially available tools
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