VolvoHydraulic Parts

11700334 — Six Point Screw Cylinder Head Bolt 11700334 For Volvo Excavator Ew140B Ec290B Ec240B Ec290B Ec240B El70C

This is a six-point cylinder head bolt designed to securely fasten the cylinder head to the engine block, maintaining critical seal integrity for combustion and coolant passages. Manufactured from high-strength forged steel, it offers superior clamping force and resistance to stretching compared to a worn or fatigued bolt. Operators may notice coolant leaks into the cylinders, oil in the coolant, or a loss of engine compression if these bolts fail.

Six Point Screw Cylinder Head Bolt 11700334 For Volvo Excavator Ew140B Ec290B Ec240B Ec290B Ec240B El70C – Part No 11700334 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryHydraulic Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeCylinder Head Bolt
MaterialForged steel
ApplicationEngine cylinder head assembly
Service LifeReplace only when cylinder head is removed
CompatibilityVolvo specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of cylinder head bolt issues may include minor coolant seepage around the head gasket area. If left unaddressed, this can progress to visible coolant leaks into the oil or exhaust, or a noticeable loss of engine power due to compression loss. Continued operation can lead to severe engine damage from overheating and internal contamination.

Installation Tip

Always clean the bolt holes in the engine block thoroughly to remove any old thread sealant or debris before installing new bolts. Never reuse old cylinder head bolts, as they can stretch and fail to provide adequate clamping force.

Service Note

When replacing cylinder head bolts, it is essential to inspect the cylinder head gasket for signs of damage and replace it as well.