Caterpillar 3512 — Speed Sensor - Clean/Inspect
Maintenance · Engine speed/timing sensor
For the Caterpillar 3512, from the Caterpillar owner's manual.
Applies to: Caterpillar 3512, Caterpillar 3512B engine
Before you start
- Do not install the sensor between the teeth of the speed-timing wheel
Procedure
- Remove the engine speed/timing sensor.
- Inspect the end of the magnet for wear and contaminants.
- Clean any debris from the face of the magnet.
- Check sliphead tension; extend sliphead for a minimum of 4 mm (0.16 inch).
- Ensure a tooth of the speed-timing wheel is visible in the mounting hole.
- Coat the threads of the sensor with 4C-5597 Anti-Seize Compound.
- Install the sensor and tighten the locknut to 40 ± 5 N·m (30 ± 4 lb ft).
Tools required
- 4C-5597 Anti-Seize Compound Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Locknut torque 40 ± 5 N·m (30 ± 4 lb ft)
- Sliphead force at least 22 N (5 lb)
- Sliphead extension minimum 4 mm (0.16 inch)
Full service-parts list: Caterpillar 3512 →, Caterpillar 3512B engine →
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.