860615491 cylinder head assembly for XCMG XMR603VT Light Roller

Short Description:

860615491 cylinder head assembly is an authentic core engine component exclusively configured for XCMG XMR603VT light compaction roller. Serving as the key carrier of engine combustion and gas exchange, this precision assembly seals the upper cylinder cavity to form a closed combustion chamber. It integrates air intake, exhaust, fuel injection and heat dissipation functions in one unit, governing gas intake, exhaust discharge and fuel atomization combustion processes. Delivering precise thermodynamic control and stable gas circuit operation, it lays the core foundation for continuous power output, ensuring reliable start-up and efficient operation of the power unit under variable construction loads.

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description

The 860615491 cylinder head assembly is a factory-calibrated integral precision component matching the power parameters and structural layout of XMR603VT engine. It adopts high-precision casting and finish machining technology, featuring integrated intake/exhaust passages, cooling water channels and mounting bases for fuel injection and valve mechanisms. Working in coordination with valve components, gaskets and sealing parts, it forms a complete and efficient engine gas exchange and combustion circulation system.

Road roller equipment frequently undergoes load fluctuations, vibration impact and temperature cycling during municipal compaction operations. Ordinary non-standard cylinder heads often suffer from inconsistent passage precision, poor structural rigidity and insufficient high-temperature resistance, easily causing air intake distortion, exhaust blockage, insufficient combustion power and local overheating. The genuine 860615491 cylinder head assembly undergoes strict factory precision machining and pressure testing. With smooth internal flow passages, uniform heat dissipation distribution and stable structural tolerance, it effectively optimizes air-fuel mixing efficiency, reduces combustion energy loss, and eliminates common faults such as power attenuation, excessive exhaust emissions and abnormal engine temperature rise, greatly improving overall engine operational stability and combustion efficiency.

product parameters

Part Number: 860615491

Applicable Model: XCMG XMR603VT Light Combination Roller

Product Name: Engine Cylinder Head Assembly

Core Structure: Integral cast cylinder head body, precision intake/exhaust passages, built-in cooling water gallery, fuel injector mounting seat, valve assembly matching hole, standardized sealing surface, multi-position fixing mounting holes

Main Material: High-strength heat-resistant cast alloy, high-density precision casting base material, anti-oxidation high-temperature resistant surface layer, low-deformation integral structural material

Core Function: Cylinder upper sealing, combustion chamber forming, air intake and exhaust circulation, fuel injection positioning, internal heat dissipation conduction, valve mechanism bearing, engine combustion efficiency optimization

Working Characteristics: High structural rigidity, low thermal deformation, smooth gas flow, uniform heat dissipation, stable high-temperature operation, precise assembly tolerance

Working Condition Adaptation: Adapt to long-term high-temperature combustion operation, frequent load changes, mechanical vibration impact and alternating cold and hot environments

Matching Parts: Valve train assembly, cylinder head gasket, fuel injector assembly, cooling system pipeline, valve cover assembly, engine block

Number	Parts Name	Quantity	Material Encoding
1	VALVE LOCK CLIP	16	860615348
2	VALVE SPRING SEAT	8	459338588
3	VALVE OUTER SPRING	8	860615531
4	VALVE INNER SPRING	8	860615349
5	VALVE OIL SEAL ASSEMBLY	8	860615350
6	INTAKE VALVE GUIDE	4
7	INTAKE VALVE	4	860615352
8	INTAKE VALVE SEAT	4	860615353
9	EXHAUST VALVE	4	860615354
10	EXHAUST VALVE SEAT	4	860615355
11	EXHAUST VALVE DUCT	4
12	CYLINDER HEAD	1
13	BOWL PLUG	8
14	REAR LIFTING EYE	1	860587192
15	HEXAGON FLANGE BOLT	4
16	BOWL PLUG	5	860615358
17	LIFTING EYE	1	860587165
18	HEXAGONAL NUT TYPE 1	5	860141826
19	VALVE ROCKER ARM FASTENING SCREWS	5
20	FRONT ROCKER ARM SEAT	1
21	MANICOTTO DELL’ALBERO	3
22	VALVE ROCKER ARM SPRING	4
23	VALVE CLEARANCE ADJUSTING NUT	8	860615363
24	VALVE CLEARANCE ADJUSTING SCREWS	8	860615364
25	ROCKER SHAFT	1
26	VALVE ROCKER ARM ASSEMBLY	8
27	HEXAGON FLANGE BOLT	5	805050112
28	ROCKER HOLDER	4
29	HEATER PLUG CONNECTING WIRE	3	860615368
30	GLOW PLUG	4	860564196
31	INJECTOR PLATE BOLT	4	459338600
32	FUEL INJECTOR PRESSING PLATE	4

advantages

• Adopts high-precision integral casting and finishing process, ensuring smooth inner wall of gas and water passages with minimal flow resistance for efficient gas exchange and heat dissipation.

• Optimized combustion chamber structure design improves air-fuel mixing uniformity, enhances combustion sufficiency and effectively reduces fuel consumption and exhaust emissions.

• High-strength heat-resistant alloy material minimizes thermal deformation under long-term high-temperature operation, maintaining stable assembly clearance and excellent sealing performance.

• Scientific layout of water channels and gas passages realizes balanced heat dissipation and ordered gas circulation, avoiding local overheating and power unbalance.

• Strict factory hydraulic pressure and air tightness testing eliminates internal pores and leakage risks, ensuring long-term reliable operation under high pressure and high temperature.

• Original factory benchmark size calibration fully matches XMR603VT engine assembly standards, featuring high fitting accuracy and superior part interchangeability.

maintenance & replacement tips

• Routinely monitor engine operating temperature, power output and exhaust condition to judge cylinder head working status and identify abnormal combustion or heat dissipation faults early.

• Inspect the sealing surface and joint gaps regularly to prevent air leakage, water seepage and oil channeling caused by gasket aging and surface deformation.

• Keep internal intake, exhaust and water passages unobstructed, regularly cleaning carbon deposits and scale to avoid passage blockage affecting combustion and heat dissipation efficiency.

• Avoid long-term overload operation and overheating startup to reduce thermal stress fatigue and prevent permanent structural deformation of the cylinder head.

• Follow standard torque sequence during installation to ensure uniform stress on the cylinder head and avoid sealing failure caused by asymmetric locking force.

• Replace with genuine 860615491 cylinder head assembly during engine overhaul to guarantee matched combustion parameters and stable power performance.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.