General
See Figure 8-4. The Crank Position Sensor (CKP) (1) is a variable reluctance (VR) sensor that generates an AC signal by sensing the passing of the 22 teeth (2) machined in the left side flywheel (3).Two consecutive teeth are missing in the flywheel to establish a reference point. The CKP sensor sends a signal to the ignition module. This signal is used to reference engine position (TDC) and engine speed. The CKP sensor is located near the lower front left corner of the engine crankcase.
![](https://motoinstruction.ru/img/harley/2/111400.jpg)
Figure 8-4. Flywheel and crank position sensor: 1. Crank position sensor; 2. Sensor teeth; 3. Flywheel
Removal
1. Remove maxi-fuse. See 8.5 Maxi-fuse.
2. Remove left side radiator trim cover.
3. Clip and remove cable strap securing CKP sensor wiring harness to fan wiring harnesses.
4. Disconnect CKP sensor harness connector [79А].
5. See Figure 8-5. Unlatch cable clip (3) on top of jiffy stand bracket and remove CKP sensor cable harness.
![](https://motoinstruction.ru/img/harley/2/111401.jpg)
Figure 8-5. Crank position sensor mounting: 1. Crank position sensor; 2. Fastener with captive washer® 8.2-10.7 Nm (73-95 in-lbs); 3. Cable clip
6. Remove fastener and captive washer (2). Carefully remove CKP sensor and o-ring (1) from engine crankcase.
Installation
Note. The new CKP о-ring has a blue teflon coating that provides lubrication during installation. It is not necessary to coat the о-ring with engine oil to install it.
1. See Figure 8-5. Install new CKP sensor (1) and o-ring with fastener and captive washer (2). Tighten to 8.2-10.7 Nm (73-95 in-lbs).
2. Route CKP sensor wiring harness through cable clip (3) on top of jiffy stand bracket. Latch cable clip.
3. Route CKP sensor wiring harness to wiring harness on left side of radiator and attach to connector [79В].
4. Secure CKP sensor wiring harness to fan wiring harnesses with new cable strap.
5. Install left side radiator trim cover. Make sure no wires become pinched under cover.
6. Replace maxi-fuse. See 8.5 Maxi-fuse.
7. Start engine and verify proper operation.