10R-8728 camshaft assembly for CAT engine spare part

Product Advantages

1. Forged steel base with hardened cam lobes, wear and impact resistant for long-term earthmoving operation of C9 engine
2. Complete assembly with timing gear and clear timing marks for easy alignment and less calibration error
3. Cam lift and timing profile calibrated for C9 electronic control system, stable power and fewer fault codes
4. Direct interchange with 242-0673, flexible sourcing and shorter excavator overhaul downtime

FAQ 

Q: What faults are caused by pitting and spalling on cam lobes?
A: Insufficient valve lift, poor air flow, power loss, higher fuel consumption and valve train noise, engine derate in severe cases.

Q: Can 10R-8728 replace 242-0674 directly?
A: No. 242-0674 has different timing and lift profile, interchange will lead to timing failure and high emission.

Q: C9 uses hydraulic tappets. Do I need repeated valve lash adjustment after camshaft replacement?
A: Hydraulic tappets compensate clearance automatically. Follow timing assembly and check valve noise after break-in.

Q: What risk if only replacing camshaft without changing bushings?
A: Worn out-of-round old bushings create abnormal clearance with new journals, which may score the camshaft quickly and cause premature failure.