The crankshaft is the heart of the HOWO MAX 4X2 engine, converting piston motion into rotational torque. This genuine HOWO kit includes the main crankshaft, main bearing bushes, thrust plate pair, front and rear crankcase gears, a dowel pin, shock absorber wheel hub, mounting bolts, oscillation absorber, and Loctite sealant. When you choose authentic Howo Parts, you receive a complete assembly engineered for the MC13 engine. For a full rebuild, also see our connecting rod kit and camshaft kit.
The main bearing bush is a precision split bearing that supports the journals in the engine block. Seven bushes are supplied, each made from a steel back with a copper-lead-tin overlay. The tri-layer construction offers high fatigue strength and embedability. The bushes are color-coded for correct installation around the shaft. Proper oil clearance is critical for durability.
The thrust plate pair consists of two semi-circular washers that control axial end float. Two plates are supplied, made from bronze-backed steel with an oil groove. They are installed in the center main bearing saddle and limit axial movement to 0.1-0.3mm. Excessive play can damage bearings and the transmission. Proper fit is essential for stability.
The front crankcase gear is a steel gear mounted on the front that drives the camshaft and auxiliary equipment. One gear is supplied, made from hardened steel with 32 teeth. It is pressed onto the assembly and secured with a key and the front retaining bolt. This gear directly transfers rotational force.
The rear crankcase gear is a larger steel gear at the rear that drives flywheel housing accessories. One gear is supplied, made from the same hardened steel. It is used in engines with rear-mounted PTO or oil pump drives, directly meshing with the main component. Both front and rear gears are matched for minimal backlash.
The pin GB / T 879.4 – 8X60 is a hardened dowel pin used to align the crankcase gear to the shaft. One pin is supplied, made from case-hardened steel with a length of 60mm and diameter of 8mm. It is pressed into a hole in the forging and prevents rotation of the gear relative to the shaft, ensuring proper phasing.
The shock absorber wheel hub is a steel flange that mounts the torsional vibration damper to the front. One hub is supplied, made from forged steel with a precision-machined pilot bore. It is secured with M16 bolts, creating a rigid connection that transfers damper forces directly into the assembly.
The hexagon socket head cap screw GB / T70.1 – Fine thread – M16X1.5X100 – 10.9 – MAN183 – B1 is a high-strength Allen bolt used to secure the shock absorber hub to the shaft. Eight bolts are supplied, each with a fine pitch M16x1.5 thread, 100mm length, and class 10.9. These bolts are torqued to 180 Nm and must never be reused.
The hexagon bolt with flange Q186 – M10X25 – 10.9 – MAN183 – B1 is a flange bolt used to attach the front and rear gears to the assembly. Nine bolts are supplied, each with M10x1.5 thread, 25mm length, and grade 10.9. They are torqued to 45 Nm and are single-use components.
The crankshaft is the main forged steel component that converts linear piston motion into rotation. One forged unit is supplied, made from 42CrMo4 alloy steel with induction hardened journal surfaces.
It has seven main bearings and six connecting rod throws, dynamically balanced to ISO 1940 G6.3. It features cross-drilled oil passages. Any crack or bend requires full replacement. This genuine component ensures correct material strength and balance.
The oscillation absorber, also known as the torsional vibration damper, is a rubber-isolated pulley that dampens harmful vibrations. One absorber is supplied, consisting of a cast iron hub, rubber ring, and outer inertia ring. It is bolted to the shock absorber wheel hub and reduces stress on the assembly and timing gears. A failed absorber can lead to breakage.
The flat seal LOCTITE574 TB250ML is an anaerobic gasket maker used to seal the crankcase and timing cover joints around the rotating assembly. One tube (250ml) is supplied. It cures in the absence of air and resists oil, coolant, and high temperatures, preventing leaks from the area.
Crankshaft – genuine HOWO forged crankshaft and bearing kit
| Material Encoding | Name |
|---|---|
| 201V01113-6095 | Main bearing bush |
| 201V01114-5501 | Thrust plate pair |
| 200-02115-0278 | Front crankcase gear |
| 200-02115-0256 | Rear crankcase gear |
| MQ6-22220-1222 | Pin GB / T 879.4 – 8X60 |
| 200V02602-0127 | Shock absorber wheel hub |
| MQ6-02099-0451 | Hexagon socket head cap screw GB / T70.1 – Fine thread – M16X1.5X100 – 10.9 – MAN183 – B1 |
| MQ6-03216-8405 | Hexagon bolt with flange Q186 – M10X25 – 10.9 – MAN183 – B1 |
| 201-02101-0671 | Crankshaft |
| 201V02201-0171 | Oscillation absorber |
| MQ4-10160-9202 | Flat seal LOCTITE574 TB250ML |
This main component is forged from high-strength 42CrMo4 alloy steel and induction hardened on the journal surfaces. It provides exceptional fatigue strength, essential for a 13-liter diesel engine. A genuine unit ensures proper metallurgy and balance.
All seven main bearing bushes and the thrust plate pair are included. The tri-layer bearings provide high load capacity, ensuring the rotating assembly spins smoothly for hundreds of thousands of kilometers.
This kit includes the front and rear crankcase gears, shock absorber hub, oscillation absorber, and all mounting bolts. No need to source separate drive components; everything is matched for the MC13 engine.
A tube of LOCTITE574 anaerobic sealant is supplied for sealing the crankcase and timing cover around the rotating assembly. This ensures a leak-free installation, preventing oil seepage.
The main component converts the linear motion of pistons and connecting rods into rotary motion. It is supported by seven main bearings and has six crank throws. It also drives the camshaft via the front crankcase gear and the flywheel via the rear flange. The oscillation absorber at the front reduces harmful vibrations that could crack the assembly.
The main bearing bushes provide a low-friction surface between the journals and the engine block. The thrust plates limit axial movement. A properly installed unit is essential for engine balance and longevity. Any imbalance can cause rapid bearing wear and catastrophic failure.
Begin by cleaning the engine block bearing saddles. Install the main bearing bushes into the block and main bearing caps, ensuring the oil holes align. Lubricate the bearings with assembly oil. Position the main forging into the block. Install the thrust plates in the center main bearing saddle around the shaft.
Install the main bearing caps and torque to specification. Install the front and rear crankcase gears onto the unit using the dowel pin and M10 flange bolts. Install the shock absorber wheel hub onto the front with the eight M16 socket head cap screws (torque to 180 Nm). Install the oscillation absorber onto the hub. Apply LOCTITE574 sealant to the timing cover and crankcase mating surfaces around the rotating assembly. Assemble the cover. Rotate the assembly by hand to verify smooth operation.
This main component is designed for the MC13 engine used in the HOWO MAX 4X2 tractor. It fits all production years from 2018 onward. It has a stroke of 155mm and a main journal diameter of 90mm. This kit is not compatible with the MC11 or MC07 engines. Always verify your engine serial number before ordering. Using the correct unit is vital for performance.
Inspect the main component for scoring or cracks during major overhauls. The main bearing bushes should be replaced every 500,000 km or if oil pressure drops.
The oscillation absorber should be checked for rubber separation; replace if the outer ring moves relative to the hub. The front and rear gears should be inspected for tooth wear. The bolts are single-use and must be replaced if removed. Always use genuine HOWO parts for any repairs to the rotating assembly. A well-maintained unit will last the life of the engine.
If the engine has a deep knocking noise that varies with load, a worn main bearing or journal may be the cause. Inspect the bearings for copper showing. If there is excessive end play (more than 0.4mm), the thrust plates are worn. A rumble at idle that disappears when the clutch is disengaged may indicate a bad oscillation absorber. If the timing gears are noisy, check the front crankcase gear for wear. Early detection prevents engine failure.
Aftermarket units are often made from lower grade steel that can bend or crack. The bearings may have incorrect clearances, leading to oil pressure loss. The oscillation absorbers in copy kits may use inferior rubber that fails quickly.
Genuine HOWO components are manufactured to the exact specifications of the original MC13 engine, using forged 42CrMo4 steel, precision-ground journals, and high-quality bearings. The small extra cost is far outweighed by the safety and reliability provided.
The main component is shipped in a heavy-duty wooden crate with foam supports. The bearings and seals are in sealed poly bags. The packaging is recyclable. The manufacturing facility is ISO 14001 certified. The unit is coated with a biodegradable rust preventive oil.
This kit includes all 11 line items listed in the parameters table. Individual components can be ordered separately using their material encodings. Authorized HOWO dealers in Nigeria stock these genuine parts. For fleet orders of three or more complete kits, volume discounts are available. Always provide your engine serial number to confirm compatibility.
Fleet managers who have installed this genuine HOWO kit report smooth engine operation and no vibration issues. The complete bearing and gear set saved time and ensured correct fitment.
The oscillation absorber has dampened vibrations effectively. Many operators have standardized on this kit for all MC13 engine rebuilds, citing the all-in-one convenience and reliability.
The main component is shipped in a wooden crate measuring 140cm x 30cm x 30cm, weight 85 kg. Store it in a dry indoor area. Do not remove the protective oil until installation. The shelf life is indefinite when stored properly. Protect from impact that could bend the shaft or damage journals.
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