Precision Sourcing: Custom Cylinder Liner & Piston Manufacturing Experts!

As the Source Manufacturer, we offer Direct Factory Supply for all QSV91 components. Specialized Custom Development and reliable Foreign Trade Export services worldwide.

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Description: Source ultra-high performance Cummins QSV91 engine Pistons (4012873/4013070) for industrial gas and diesel applications. Honour Time Machinery Limited supplies OEM-quality components for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, Weichai engines globally, specializing in engine repair solutions and heavy equipment parts export.

Title: Cummins QSV91 Piston 4012873 4013070 - Factory Direct Industrial Engine Spares

Engineered Excellence: Essential Cummins QSV91 Pistons

The massive Cummins QSV91 is designed for continuous, high-load industrial and power generation applications. Only components of the highest quality can ensure its longevity and performance.

We specialize in the heavy-duty Piston Assembly part numbers 4012873 / 4013070 (4012873, 4013070). These components are critical for containing high combustion pressures and transferring power efficiently.

Honour Time Machinery Limited stocks all necessary corresponding parts, including the Cylinder Liner and Piston Ring Set, ensuring you receive a complete solution for your QSV91 engine rebuilding kit with components meeting OEM specifications.

Honour Time Machinery Limited: The Source Supplier for Diesel Engine Components

We are the global expert in providing engine spares for leading manufacturers: Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our core business is delivering fast and efficient engine repair solutions and reliable heavy equipment engine components export.

Our stocked products ensure rapid turnaround for all diesel engine overhaul projects:

• Combustion Components: Cylinder Liner, Piston, Piston Ring.

• Bearing Kits: Crankshaft Bearing (Main Bearing Set), Connecting Rod Bearing, Thrust Plate.

• Engine Assemblies: Crankshaft, Connecting Rod, Engine Block Assembly, Cylinder Head.

• Fluid Control: Water Pump, Oil Pump, Turbocharger Unit, Diesel Fuel Pump, Fuel Injector.

We are dedicated to supporting your needs for industrial engine servicing and power generation unit maintenance.

Technical Focus: Component Location and Role

• Tappet/Follower: Located in the Engine Block (Camshaft Area). Transfers the motion of the camshaft lobe to the pushrod. (Cummins NTA855 Engine - Valve Tappet)

• Track Adjuster: Located in the Undercarriage (Track Frame). Uses grease/hydraulic pressure to maintain track tension. (Komatsu PC450-8 Excavator - Track Adjuster Assembly)

• Main Relief Valve: Located in the Hydraulic Pump or Control Valve. Limits the maximum pressure in the hydraulic system. (Caterpillar D8R Dozer - Hydraulic Relief Valve)

• Starter Motor: Mounted on the Flywheel Housing. Uses electrical power to crank the engine for starting. (Isuzu 6WG1 Engine - Starter Motor)

• Fuel Shutoff Solenoid: Located on the Fuel Pump/Injection System. Stops fuel flow to shut down the diesel engine. (Kubota V3307 Engine - Fuel Shutoff Solenoid)

• Alternator: Mounted on the Engine Block. Generates electrical power to charge the battery and run accessories. (Yanmar 4TNV98 Engine - Alternator)

• Fan Hub: Located at the Front of the Engine. Holds and drives the cooling fan. (Weichai WP10 Engine - Fan Hub Bearing)

• Exhaust Manifold: Attached to the Cylinder Head. Collects exhaust gases from the cylinders and directs them to the turbo/muffler. (Cummins QSK60 Engine - Exhaust Manifold)

• Pinion Gear: Located in the Transmission/Final Drive. A small gear that meshes with a larger one to change torque/speed. (Caterpillar 140M Grader - Pinion Gear)

• Load Sensing Valve: Located in the Hydraulic System (Control Valve). Adjusts pump output based on hydraulic load demand. (Komatsu PC200-8 Excavator - Load Sensing Valve)

Engine Failure Analysis: Oil Consumption & Blue Smoke

Equipment: Caterpillar 992K Wheel Loader - Engine Model: Cat C32

Fault Symptom: The Cat C32 engine is experiencing Excessive Oil Consumption accompanied by Heavy Blue Smoke from the exhaust.

Common Causes & Solution:

• Cause 1: Failed Oil Control Rings. The oil control Piston Rings are worn, broken, or clogged, allowing oil to pass into the combustion chamber. Solution: Measure cylinder compression and check for excessive blowby. An engine top-end overhaul is required to replace the Piston Ring Set and potentially the Cylinder Liner.

• Cause 2: Valve Stem Seal Wear. Oil is leaking past the valve stem seals and into the combustion chamber when the engine is running or decelerating. Solution: Inspect valve stem seals in the Cylinder Head. Replace all valve stem seals to prevent further oil ingress.

• Cause 3: Turbocharger Seal Failure. The turbine or compressor seals in the Turbocharger Unit are leaking oil into the intake or exhaust system. Solution: Inspect the turbo inlet and outlet for signs of oil. Replace the turbo cartridge or the entire unit if the seal is compromised.

Contact Our QSV91 Piston Specialists Now!

For immediate quotes on Cummins QSV91 Piston 4012873 / 4013070 and all engine components, connect with Honour Time Machinery Limited, your reliable global partner.

WhatsApp: +8613532379052 (Clickable)

Email: [email protected] (Clickable)