488-3489 rear camshaft CAT engine spare part

Advantages

• Controls the timing of intake and exhaust valves.
• Smooth surface finish for reduced friction.
• Withstand high rotational speeds and loads.
• Operates in synchronization with pistons.

1. Exclusive rear locating shoulder, different cam profile from front camshaft to guarantee timing phase match
2. Controlled hardened depth, cam lobes resist softening under high temperature, stable durability
3. Strict roundness tolerance of journals, reduce bearing eccentric wear and abnormal oil pressure risk
4. Dynamic balance calibrated for rear transmission load, low vibration at high speed, protect cylinder head valve parts

FAQ 

Q1：Can 488-3489 rear camshaft be replaced alone without front camshaft?
A：Single replacement is acceptable, but inspect front camshaft wear. Replace both if worn seriously.
Q2：What usually causes abnormal noise from rear camshaft?
A：It is mostly caused by excessive bearing clearance, stuck tappets or misaligned timing, disassembly inspection is required.
Q3：Is valve clearance adjustment required after replacing rear camshaft?
A：Valve clearance must be recalibrated to ensure normal valve lift and sealing.
Q4：Can we hang the camshaft only by one end for storage?
A：Single-point lifting is not recommended, it may bend the shaft. Multi-point bracket support is preferred.