634-2558 engine camshaft CAT engine spare part

Short Description:

Part No.634-2557, CAT right cylinder bank camshaft, fits heavy-duty dual bank mining engine, controls valve timing of all cylinders on right bank, paired with 634-2558 left bank camshaft, overhaul spare part for low-speed high-torque variant.

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Product Detail

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Advantages

1. High-torque dedicated cam profile, phase matched with 634-2557 for balanced power
2. Deep hardening treatment, reduce cam wear and spalling under continuous heavy load
3. Strict journal coaxiality control, uniform bearing load and slow eccentric wear
4. Single left bank replacement, no right bank disassembly required, save service time

FAQ

Q1：Can 634-2558 replace 634-2552 left bank camshaft directly?
A：No. Lift and timing calibration differ, they belong to different power and torque versions.
Q2：Must 634-2557 right bank camshaft be replaced together with 634-2558?
A：Not mandatory. Inspect right bank camshaft separately and replace it if worn severely.
Q3：What to check first if left bank fuel consumption rises and response is slow?
A：Check timing phase, valve clearance, stuck tappets and cam bearing clearance first.
Q4：How to protect cam lobes during long time storage?
A：Clean cam surface, apply anti-rust oil, wrap with anti-rust paper, support on journals instead of cam lobes.