Technical Specifications: Caterpillar 1W-4594 Rocker Arm BushingThe Caterpillar 1W-4594 Rocker Arm Bushing is a high-precision internal cylinder head component. It provides a low-friction wear surface inside the rocker arm assembly, ensuring smooth pivotal alignment as the rocker arm actuates the intake and exhaust valves.
1. Core Dimensions & Weight
- Sleeve Inside Diameter: 36.83 mm (1.450 in)
- Sleeve Outside Diameter: 40.38 mm (1.590 in)
- Overall Length / Width: 37.74 mm (1.486 in)
- Component Height: 38.10 mm (1.500 in)
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Net Weight: 0.06 kg (0.135 lbs)
2. Material & Manufacturing Specs
- Material Grade: Premium heavy-duty bronze-backed or bimetal alloy composite matrix.
- Micro-Lubrication: Features structural precision oil transfer drill holes to maintain continuous pressurized oiling across the shaft.
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Durability: Engineered with high fatigue strength to absorb mechanical shock and maintain valve timing under high-load combustion cycles.
3. Equipment & Engine Compatibility
This sleeve bearing is widely utilized across the Caterpillar 3500 and G3500 heavy-duty engine platforms:
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Diesel Engine Series: CAT 3508, 3508B, 3508C, 3512, 3512B, 3516, 3516B.
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Gas Engine Series: G3508, G3508B, G3508J, G3512, G3512B, G3512E, G3512J, G3516, G3516B, G3516C, G3516E, G3516J, G3520B, G3520C, G3520E, G3520J.
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Mining & Earthmoving Equipment: Caterpillar D11N and D11R Track-Type Tractors, 5130 and 5230 Mining Excavators, 777C, 785B, 789B, and 793B Off-Highway Mining Trucks.
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Power Modules & Marine Generation: PM3508, PM3512, PM3516 power modules, marine propulsion configurations, and SR4 / SR4B / SR5 generator packages.
4. Part Cross-References
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Alternative/Interchangeable Part Numbers: 1W4594, 1W 4594
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