634-2557 right cylinder bank camshaft CAT generator spare part

634-2557 right cylinder bank camshaft CAT generator spare part Featured Image
  • 634-2557 right cylinder bank camshaft CAT generator spare part
  • 634-2557 right cylinder bank camshaft CAT generator spare part
  • 634-2557 right cylinder bank camshaft CAT generator spare part

Short Description:

Part No.581-3305, CAT right rear engine camshaft, fits heavy-duty dual bank engine, installed at rear of right cylinder bank, controls valve timing for rear cylinders on right bank, works with 581-3299 and 581-3303, overhaul spare part for large mining machinery.


Product Detail

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description

This 634-2557 is one-piece full-length camshaft for right cylinder bank. Its lobe lift and duration are calibrated for low-speed high-torque condition. It controls valve timing of all cylinders on right bank and synchronizes with left bank camshaft to guarantee stable torque output. Forged alloy steel blank with deep high-frequency hardened and mirror polished cam lobes, excellent impact and fatigue resistance. It is designed for heavy-duty mining trucks and large electric loaders, can be assembled with camshaft housing, thrust parts and timing gear, available for independent right bank overhaul.

Part No.：634-2557
Name：CAT right cylinder bank camshaft
Mounting position：Right cylinder bank
Structure：One-piece camshaft for full cylinder bank
Material: Steel
Weight (kg): 35.28
Surface treatment：Deep high-frequency hardening, mirror grinding

Advantages

1. High-torque dedicated cam profile, sufficient air intake at low speed and strong power output
2. Deep hardened layer, resistant to pitting and spalling under alternating load
3. Strict coaxiality control for multiple journals, uniform bearing load and low seizure risk
4. Independent right bank replacement available, no left bank disassembly required, save overhaul cost

FAQ 

Q1：Can 634-2557 replace 634-2551 right bank camshaft directly?
A：No. Timing and lift curve differ, they are for different power versions.
Q2：Must 634-2558 left bank camshaft be replaced together with 634-2557?
A：Not mandatory. Inspect left bank camshaft separately and replace it if worn severely.
Q3：What to check first if right bank has low power and black smoke at low speed?
A：Check timing phase, valve clearance, stuck tappets and cam bearing clearance first.
Q4：How to protect cam lobes during long storage?
A：Clean surface, apply anti-rust oil, wrap with anti-rust paper, support on journals instead of lobes.

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