The part is a critical set of lubrication fittings that ensure proper greasing of pivots, joints, and bearings on the HOWO MAX 4X2 tractor. This Grease nipple assembly kit includes both a standard straight grease nipple and a 90-degree elbow grease nipple, providing versatility for accessing hard-to-reach lubrication points. When you choose authentic Howo Parts, this Grease nipple assembly guarantees OE fitment and reliable lubrication delivery. Below are detailed descriptions of every component included with this Grease nipple assembly.
The elbow grease nipple is a 90-degree angled fitting that allows grease to be injected into components where straight access is obstructed. This Grease nipple assembly component is made from zinc-plated steel with a precision-machined ball check valve that prevents grease from escaping and keeps contaminants out. The elbow design redirects the grease path by 90°, making it ideal for suspension pivots, steering linkages, and other tight spots on the HOWO MAX 4X2 chassis.
The nipple has a standard M10x1 thread and accepts standard grease gun couplers. The ball check valve is spring-loaded to open under pressure (typically 10-15 bar) and closes when the grease gun is removed, maintaining internal pressure and preventing ingress of dirt and moisture. A properly functioning elbow grease nipple ensures that lubricant reaches the bearing surfaces, reducing wear and extending component life. Regular greasing through this Grease nipple assembly component is essential for maintaining the vehicle’s steering and suspension systems.
The grease nipple is a straight-type lubrication fitting, also known as a zerk fitting, used for direct-access lubrication points. This Grease nipple assembly component is made from hardened steel with a conical sealing seat and a spring-loaded ball check valve. The straight design allows easy coupling of the grease gun in unobstructed areas. The thread size is M10x1, compatible with all standard grease gun couplers. The ball valve opens under grease pressure and seals immediately when pressure is released,
preventing lubricant leakage and contamination ingress. This Grease nipple assembly component is typically used on kingpins, universal joints, brake camshafts, and other pivoting points. Correct greasing frequency (every 5,000-10,000 km) through this Grease nipple assembly component is critical for minimising friction and preventing premature wear. The grease nipple’s robust construction ensures it can withstand repeated coupling cycles without damage.
Grease nipple assembly – genuine HOWO lubrication fitting set for MAX 4X2
This Grease nipple assembly provides both a standard straight nipple and a 90-degree elbow nipple. With this Grease nipple assembly, you can service every lubrication point on the HOWO MAX 4X2 chassis, including those in tight corners where a straight nipple would be inaccessible.
Both Grease nipple assembly components are manufactured from hardened steel with a zinc-nickel coating. This Grease nipple assembly resists corrosion and wear from repeated coupling with grease guns, ensuring a long service life in the harsh under-chassis environment.
The integrated ball check valve in this Grease nipple assembly opens only under grease pressure and seals immediately when the gun is removed. This Grease nipple assembly feature prevents lubricant leakage and keeps dirt out of the bearing, reducing wear and extending component life.
This Grease nipple assembly uses the industry-standard M10x1 thread, compatible with all standard grease gun couplers and existing chassis lubrication points. Replace damaged nipples quickly without needing special tools.
The part is installed at critical pivot points on the HOWO MAX 4X2 chassis, including the kingpins, tie-rod ends, drag links, spring pins, and brake camshafts. During routine maintenance, a grease gun is connected to the nipple, and grease is pumped under high pressure. The pressure forces the ball check valve open, allowing grease to flow into the bearing cavity. When the pressure is released, the spring returns the ball to its seat, sealing the bearing and preventing the ingress of water,
dirt, and road debris. The elbow grease nipple is used where the straight nipple cannot be accessed due to nearby components or chassis structure. A blocked or damaged Grease nipple assembly can lead to grease starvation, causing accelerated wear and failure of the component. Regular greasing intervals (every 5,000-10,000 km) using the correct Grease nipple assembly are essential for ensuring the longevity of the steering and suspension systems.
Before installing The part, clean the threaded hole on the component to remove any old grease, dirt, or debris. Apply a small amount of thread sealant or anti-seize compound to the threads to prevent corrosion and ensure a good seal. Screw the new Grease nipple assembly component into the hole by hand until it is finger-tight, then use a wrench to give it an additional quarter turn. Do not overtighten, as this can damage the threads or distort the sealing surface.
Ensure the nipple is oriented correctly – the straight nipple should point towards the grease gun access, and the elbow nipple should be directed to provide the best access. Once installed, attach a grease gun and pump a small amount of grease to ensure the ball check valve opens and grease flows into the bearing. Wipe off any excess grease. The part is now ready for service.
If grease does not flow through The part, the ball check valve may be stuck closed due to hardened grease or corrosion. Try using a pointed tool to gently depress the ball to free it. If the nipple leaks grease when the gun is removed, the ball valve may be damaged or the sealing seat may be worn; replace The part component.
If the nipple is broken or stripped, remove it with a screw extractor and install a new one. A loose Grease nipple assembly can allow water and dirt to enter the bearing; tighten it securely. Always use the correct Grease nipple assembly for the application; using an elbow where a straight nipple is needed may cause clearance issues, and vice versa.
The part itself does not require routine maintenance beyond inspection. However, the chassis lubrication points should be greased at every scheduled service (typically every 5,000-10,000 km). During the greasing process, inspect each Grease nipple assembly for damage, corrosion, or blockage. If a nipple is damaged, replace it immediately.
If grease is not flowing, clean the nipple or replace it. Keep spare Grease nipple assembly components in the workshop to replace any that are damaged. After greasing, wipe off any excess grease to prevent dirt accumulation. A properly maintained Grease nipple assembly ensures that the chassis components receive the necessary lubrication, reducing wear and extending their service life.
This Grease nipple assembly kit is compatible with all HOWO MAX 4X2 tractors, SITRAK C7H, and HOWO T7H models using the standard M10x1 lubrication points. The kit is also suitable for many other heavy trucks and agricultural equipment that use the same thread size. The elbow grease nipple is particularly useful for steering and suspension components where clearance is limited. This Grease nipple assembly kit is not compatible with metric threads other than M10x1 or with imperial (UNF) thread sizes. Always verify the thread size of the existing nipple before ordering.
Aftermarket Grease nipple assembly components may be made from lower-grade steel that corrodes quickly, or the ball check valve may not seal properly, allowing dirt to enter the bearing. Generic nipples may have slightly different thread dimensions, leading to cross-threading or leaks. Genuine HOWO Grease nipple assembly components are manufactured to SINOTRUK’s exact specifications,
using hardened steel, precise thread forms, and reliable check valves. The small additional cost of a genuine Grease nipple assembly is insignificant compared to the cost of replacing a kingpin or steering linkage due to lubrication failure. Using genuine parts ensures that your lubrication system operates as designed, protecting your investment.
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