Crankshaft Position Sensor: Service and Repair

Checking/Setting Position Of TDC Sensor (Part 1 Of 2):

Checking/Setting Position Of TDC Sensor (Part 2 Of 2):

NOTE: Numbers in parentheses ( ) indicate a component or tool in the associated illustration.

WORK INSTRUCTIONS
- Remove Belt pulley (5) of coolant pump as follows:
In order to slacken the bolts, install on the poly V-belt at the belt pulley of coolant pump and attach counter-holder, refer to Engine
- Remove bush (15) of shaft cover, cylinder 1
If necessary, crank engine at crankshaft to remove.
Replace O-rings.
- Remove injection nozzle at cylinder 1
- Remove glow plug at cylinder 1
- Remove prechamber at cylinder 1, refer to Engine.





- Check position of bracket of TDC sensor and correct as follows:
1. Screw dial gauge holder (2) into the prechamber bore of cylinder 1.
2. Set piston of cylinder 1 to about 110° BTDC.
3. Fit dial gauge (1) with tracer pin onto dial gauge holder (2).
4. Set tracer pin on the dial gauge (1) to a preload of about 5 mm.
5. Slowly crank engine further in direction of rotation at the front of the crankshaft until the pointer of the dial gauge (1) stops (TDC position).
6. Set scale of dial gauge (1) to zero.





7. Slowly crank engine further in direction of rotation of crankshaft until the dial gauge has moved back by the piston stroke at 20° ATDC.
- Piston Stroke Specification at 20° ATDC: 3.23 mm
- After the dial gauge has moved back (crankshaft position 20° ATDC), the pin (4) in the crankshaft bell pulley or in the vibration damper must be positioned exactly below the bracket of TDC sensor (arrow).
8. insert fixing pin (03) into the bracket of TDC sensor (17).





9. The pin (4) in the crankshaft belt pulley or in the vibration damper must engage in the slot of the fixing pin (03) (arrow).
10. If the pin does not engage, correct the position of the bracket of the TDC sensor (17).





11. To do this, slacken bolt (23) and move bracket of TDC sensor (17) sufficiently until the pin (4) in the crankshaft belt pulley or in the vibration damper engages in the slot of the fixing pin (03).
12. Tighten bolt (23).