634-2550 right cylinder bank camshaft CAT spare part

Short Description:

Part No.634-2550, CAT left cylinder bank camshaft, fits heavy-duty dual bank engine, drives all intake and exhaust valves of left cylinder bank, controls valve timing of left bank, paired with 634-2549 right bank camshaft, key overhaul spare part for heavy mining machinery.


Product Detail

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description

This 634-2550 is one-piece integrated camshaft for the whole left cylinder bank. It controls valve lift, timing and duration of all cylinders on left bank and matches phase with right bank camshaft to balance engine power delivery. Forged alloy steel blank with high-frequency hardened and mirror polished cam lobes, excellent resistance to contact fatigue and thermal shock. It is designed for heavy-duty mining trucks and large electric loaders, can be assembled with camshaft housing, thrust plate, woodruff key and timing gear, available for independent left bank overhaul.

Part No.:634-2550
Name:CAT left cylinder bank camshaft
Mounting position:Left cylinder bank
Structure:One-piece camshaft for full cylinder bank
Weight (kg): 35.24
Shaft diameter (mm): 56.0
Length (mm): 1,183.9
Internal threads: 5/8″-11-2B, 1/2″-13-2B
Material: Carbon steel, steel
Surface treatment:High-frequency hardening, mirror grinding

Advantages

• Maintains valve timing across the engine speed range.
• Promotes effective fuel combustion and exhaust regulation
• Supports variable valve timing mechanisms.

1. Dedicated cam profile for left bank, phase matched with right bank camshaft for stable power output
2. Mirror ground cam surface, low friction, reduce pitting and spalling under high temperature
3. Strict coaxiality control for multiple journals, uniform bearing load and low seizure risk
4. Independent left bank replacement available, no right bank disassembly required, save overhaul time and cost

FAQ 

Q1:Can 634-2550 replace 634-2549 right bank camshaft?
A:No. Cam phase, lobe layout and locating structure are dedicated for left bank, not interchangeable.

Q2:Must right bank camshaft be replaced together with 634-2550?
A:Not mandatory. Inspect right bank camshaft separately and replace it if worn severely

Q3:What to check first if all left bank cylinders have high exhaust temperature after replacement?
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.

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