Product Description

CZPT Fan Belt Tensioner Pulley 5262500 for Engine ISF, with list of belt tensioners for CZPT engines, as below: 

Engine	Description	Part #	Part #	Part #	Part #	Part #
B3.9	belt tensioner	3922900	3914854	3936210	3936198	3936207
B3.9	belt tensioner	3936204	3937555	3936197	3936206	3936201
B5.9	belt tensioner	3937553	3934818	3914086	3978571	3936202
B5.9	belt tensioner	3936203	3924026	3978571	4994573	3976832
B5.9	belt tensioner	3928748	3934824	3936208	3973825	3934814
B5.9	belt tensioner	5333478	3917440	3934819	3936205	5333481
B5.9	belt tensioner	3918944	3934817	3973822	3921524	3934816
B5.9	belt tensioner	3976833	3957433	393 0571	3973824	5333486
B5.9	belt tensioner	3922549	3925625	3934820
C8.3	belt tensioner	3937556	4898548	4987964	3936212	3934830
C8.3	belt tensioner	3969564	3959042	3991495	3936213	3976831
C8.3	belt tensioner	3933725	3934831	3973823	3917485	5333477
C8.3	belt tensioner	3934822	3973827	5333480	3967190	3281583
C8.3	belt tensioner	3934821	3945527	5259571
6ISBE	belt tensioner	3947574	4891116	4936640	4987964	3979316
QSB	belt tensioner	3976834	3957434
ISF2.8	belt tensioner	5262500
ISF3.8	belt tensioner	5267127	5287571	4980639	5287571
K19	belt tensioner	3009639
M11	belt tensioner	3457141	3400885	3157189	3062602

origins from Cummins, who produces most CZPT engine series in China, including:
 

SN	Models
1	4BT3.9, 6BT5.9, 4ISBE4.5, 6ISBE6.7, QSB4.5, QSB6.7, ISB
2	6CT8.3, L8.9, L9.3, L9.5, ISLe8.9, QSL
3	MTA11, QSM, ISME
4	ISF2.8, ISF3.8, QSF2.8, QSF3.8
5	ISZ13, QSZ13, ISG
6	NT855
7	KT19, KT38, KT50, QSK19, QSK38, etc

for different applications, such as:
 

SN	Applications
1	diesel generator set
2	water pump set, fire pump set
3	construction and engineering machinery (crane, excavator, bulldozer, loader, etc)
4	Automobile (bus, coach, shuttle, etc)
5	marine main propulsion, marine auxiliary generator set

And besides complete engines, we also export a lot of engine parts parts, including:     
 

SN	Part Descriptions
1	cylinder head, cylinder block, cylinder liner
2	piston, piston ring, conrod
3	main bearing, conrod bearing, thrust bearing
4	fuel injector, fuel injection pump, common rail
5	oil pan gasket, cylinder head gasket
6	overhaul gasket kit, upper gasket kit, lower gasket kit
7	oil pan
8	fuel transfer pump, water pump, oil pump, vacuum pump, power steering pump
9	oil filter, fuel filter, fuel water separator, air filter, Etc

Beyond Cummins, we also deal with many other brands of engines and gearboxes, etc, including:
 

SN	Brands
1	Deutz, MWM
2	CAT
3	Detroit
4	Weichai
5	Isuzu
6
7	Perkins
8	Yuchai
9	SDEC
10	Advance
11	Fada
12	Jinbei, Brilliance
13	Iveco, Yuejin
14	WEICHAI

FAQ:
Question: What is the price ?
Answer: Our prices are determined by various factors, including: Brand, Model, Power, Quantity, Price Term (FOB, CIF, CPT, FCA, etc), Certificates, etc.
Question: What is the MOQ ?
Answer: for complete engine, 1 set; for engine parts, 1 engine set;
Question: Are samples available ?
Answer: Sample order is acceptable, but with higher unit price.
       For regular partners, if necessary, free samples are available.
Question: How long is the production cycle (lead time) ?
Answer: for engine parts, we usually have enough stock; for engines, usually around 10-20 days; for stock engine, usually 1 week.
Question: How long is the shipment?
Answer: if by Express, usually 3-4 working days; if by air, usually 3-5 working days; if by sea, 3-7 days to Southeast Asia, 15-20 days to Middle East, South Asia and Australia, 20-25 days to Europe, USA and Africa, 30-35 days to Latin America and other regions.
Question: What are your payment methods ?
Answer: we accept T/T (bank wire transfer), L/C, Western Union, Money Gram, Sigue, Secured Trade through Made-in-China, etc.
Question: Do you supply any other brand ?
Answer: we entered stock engine industry since 2016, mainly focusing in engines in stock, never used, still under good condition, made in US/UK/Germany/Japan/Korea/China, etc. Sometimes we have stocks of other brands than our normal list of brands. Thus, any inquiry is warmly welcomed and we will always do best to support customers.

How to Prevent Timing Belt Problems

Unlike their predecessors, timing chains and timing belts are made of rubber and synchronize the opening and closing of valves in the engine. While their benefits are numerous, they are prone to wear and tear over time. Here are some tips for ensuring your timing belt lasts for many years. Listed below are some of the most common problems that you may encounter when changing your timing belt. Read on to find out how to prevent them and keep your car running at peak performance.

Timing belts are rubber

There are many advantages to using timing belts in your car. They are lightweight and reduce the strain on your vehicle’s internal components. They are also quiet when running, so you won’t have to listen to your car to know that maintenance is needed. If you’re concerned about noise, a quiet engine can help you determine whether your timing belts are broken or if you need to replace them altogether. A quiet engine can also help you notice signs of wear and tear before you do.
Regardless of material, rubber timing belts can be susceptible to stretching and breaking. They also are susceptible to high temperatures and the lubrication of motor oil, reducing their lifespan. Manufacturers have responded to this problem by creating timing belts made of engine-temperature-resistant rubber materials. The improved rubber compounds also provide greater strength and resistance to distortion. Reinforcing fibers also protect the teeth from shearing, reducing the risk of a worn-out timing belt.
While the open-ended, or spliced, types of timing belts have many advantages, they are generally unsuitable for high-speed applications. In most cases, rubber timing belts are used in high-speed machine tools and automatic doors. They are also quiet and require minimal maintenance. These characteristics make rubber timing belts a great choice for high-speed applications. You can even order custom-made timing belts for unusual applications.
Timing belts are important for the functioning of an engine. They link the camshaft and crankshaft to the crankshaft. They control the movement of valves and pistons. If a timing belt fails, it can cause major damage to the engine. If you are unsure of the benefits of rubber timing belts, consider a video on the topic. This will provide you with more information on timing belts.

They synchronize the opening and closing of the engine’s valves

During the combustion process of the engine, the valves in the cylinder head open and close. Fresh air enters the cylinder, which burns with the fuel to generate power. Exhaust escapes the engine through the exhaust valve. Each cylinder contains between 2 and 4 valves. The timing belt drives a camshaft, which rotates in a precise manner to synchronize the valve opening and closing.
A timing belt is a toothed rubber belt that connects the engine’s crankshaft to the crankshaft. Like most rubber parts, timing belts degrade over time, so it’s important to replace them at the proper intervals. Replacement intervals vary depending on the make and model of the vehicle, but they should be replaced every 60 to 90 thousand miles.
A broken timing belt will not start the engine. A timing belt driven vehicle will need to be towed to a repair shop for repairs. In the automotive industry, timing belts drive both “free running” and “interference” engines. The timing belt transfers the crankshaft’s rotation to the camshafts, which in turn actuate the valves in the intake and exhaust system. When they malfunction, the pistons can contact open valves, bending or punching them.
Timing belts also work with pistons and connecting rods to create power. Perfect timing is essential for the engine to run smoothly. The timing belt regulates both the pistons and the valves. If they are out of sync, they may not ignite properly, leading to catastrophic engine failure. When you’re looking for a replacement, look for these signs of wear.

They are lighter, quieter and more efficient than timing chains

While the initial choice was for quieter performance, variable timing has led to greater efficiency and power. While noise is a factor, the average consumer cannot tell the difference. And while timing belts are generally lighter and quieter, a chain can be more noisy than a belt, which can cause more engine damage. If you’re unsure whether you should opt for a chain or a belt, consult your owner’s manual.
A timing chain functions similar to a timing belt but is made from metal and is housed inside the engine compartment. It receives its lubrication from engine oil. Timing chains can last a long time as long as you keep them properly maintained. A timing chain is not as efficient as a timing belt, but it is more accurate, quieter and easier to maintain.
A timing belt uses teeth to time the movement of various components in an engine. When the timing belt is broken, the valves in the engine will not be in sync, leading to a loss of pressure in the combustion chamber. This can cause a plethora of engine problems and cost-increasing repairs. A timing belt is also quieter and requires less lubrication, so it is safer and quieter than a timing chain.
After the advent of variable valve timing, cars began to use a timing chain. This design improved engine performance and reduced maintenance, but it also caused a backlash as consumers were no longer interested in this kind of routine maintenance. Today, however, timing chains are making a comeback in the automotive industry. While modern chains can still be noisy, they are easier to maintain, are lighter, and last longer than their chain counterparts.

They wear out over time

Even the best drive belts will eventually wear out. The main causes of belt wear include mileage and heat. The belt bends as it passes the pulley, producing heat that hardens the rubber. When the belt slips, it increases friction, accelerating the process. A worn-out belt can be very difficult to start, causing an engine to lose fuel efficiency. To help prevent this problem, check the belt for wear and tear.
A timing belt is an engine component that connects the camshaft to the crankshaft and controls the timing of combustion. These belts are made of industrial-strength rubber, and often contain nylon-reinforced cords. Although they are meant to last, they will eventually wear out. If the timing belt fails, your engine won’t run smoothly or you could spend thousands of dollars fixing it.
A faulty timing belt can cause the valves to open too early or too late, causing poor combustion and a drop in engine performance. If the timing belt breaks, the valves may hit the pistons and cause damage. This can lead to engine breakage, which requires a new engine. To prevent this, you should replace the timing belt every couple of thousand miles. If you can’t find a reliable mechanic, it is best to seek professional help from a reputable mechanic.
Another warning sign that your timing belt needs replacing is a ticking sound coming from within your engine. This is an indication of a lower oil pressure than normal. Low oil pressure can affect the timing belt as it can cause the tensioner that holds the belt taut will lose pressure. Eventually, the belt may even break, allowing the camshafts to slip and break. Once this happens, it is time to replace the timing belt.

They can be repaired

Timing belts can be repaired. If your timing belt breaks, you can take your car to a repair shop to have it repaired or replaced. The price of a repair depends on the labor hours and how many hours it takes to do the job. A bad timing belt can ruin your engine and cause it to break down completely. If you’re unable to drive your vehicle, it may require towing and a new engine.
For most drivers, a timing belt replacement will cost about $1,000 at a dealership. Luckily, you can often get the same service for less at an independent auto repair shop. Often, a timing belt repair requires replacing the water pump, too. It makes sense to replace both at the same time. But remember that timing belts are more complicated than that. If you’re worried about the cost, you can replace the water pump along with the timing belt.
If you’re in the mood to do this repair, there are many companies that offer this service. The cost is relatively low and you’ll probably save hundreds of dollars over the course of the job. However, timing belt repair is not a simple job and must be done correctly or you could end up damaging your car engine. Therefore, it’s important to know how to repair a timing belt yourself to avoid the high price of hiring a mechanic.
When timing belts start to fail, there are a few warning signs you can listen for. A difficult start-up can be a sign that your belt needs to be replaced. Also, thick smoke coming from the tailpipe can be a sign that the timing belt needs to be changed. In addition to these symptoms, your timing belt may have a crack or broken gear teeth, which means it needs to be replaced.