Repair of Nissan X-Trail variator (CVT)

NISSAN X-TRAIL T31 2.0. Automatic transmission, CVT

Quick navigation through consultations (question-answer):
Nissan X-Trail CVT repair * (General forum on CVT X-Trail)

By body and year of manufacture:

T30 (T30 automatic transmission): 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001

T31 (T31 CVT 2.5, T31 CVT 2.0, T31 automatic transmission): 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

T32 (T32 automatic transmission): 2021 | 2021 | 2015 | 2014 | 2013

*most answers are concentrated in the general forum

See what problems we solved with the CVT Nissan T31 (in the form of examples of work with descriptions)

GEARMATIC - partial and major repairs of the Nissan X-Trail T31 2.0 variator in Moscow with a guarantee.

If you feel that the box is not behaving as usual, then you should diagnose the cvt X-Trail; we list the typical symptoms of a malfunction that indicate a possible imminent breakdown:

• slips (slip)
• a signal appeared on the instrument panel - automatic transmission emergency mode
• constant or periodic vibration (you also need to check the pillows)
• jerks when shifting down/up to any gear, jerks when cold or hot
• Gears won't engage, gear is lost
• shocks in the transmission, kicking
• slow, slow, noisy

Also, do not forget to carry out maintenance of the cvt X-Trail on time (at least changing the oil (ATF) and filter, in advanced cases, flushing the valve body); however, going to the bulkhead is a more expensive undertaking. Periodically check the oil level in your gearbox yourself (if there is a dipstick). Be sure to warm up the box in winter, at least while driving at low gas (if you are in a hurry).

GEARMATIC - inexpensive repair of the Nissan X-Trail T31 2.0 CVT transmission at an affordable price.

If you have a malfunction or breakdown of the Nissan X-Trail T31 CVT transmission and you want (for maintenance, diagnostics, problem solving), you want to leave a review about the transmission on this car (share with others), leave a review about our work - You can do all this using the comment form below. They also contain reviews about the Nissan X-trail T31 2.0 variator from the owners of this car.

See what problems we solved for Nissan (in the form of examples of work with descriptions)

Quick navigation through consultations (question-answer):

Nissan X-Trail CVT repair * (General forum on CVT X-Trail)

By body and year of manufacture:

T30 (T30 automatic transmission): 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001

T31 (T31 CVT 2.5, T31 CVT 2.0, T31 automatic transmission): 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007

T32 (T32 automatic transmission): 2021 | 2021 | 2015 | 2014 | 2013

*most answers are concentrated in the general forum

Typical breakdowns

Review of the Nissan X-Trail CVT

Story

Nissan X-Trail RedBull Logbook Changing the oil and filter in an automatic transmission
Continuously variable transmission is not a new idea, and was known back in the Middle Ages. In particular, Leonardo da Vinci reflected it in his drawings. And the CVT box embodies these ideas in a modern, high-tech design.

They started installing the Jatco variator on the Nissan X Trail about 10 years ago, and since then the manufacturer, car service centers and motorists have already accumulated solid experience in operating these boxes, repairing and eliminating various problems.

Box device

The Nissan variator is based on the principle of V-belt transmission: the box contains pulleys consisting of two cones, connected by a special belt, which is responsible for transmitting torque. The gear ratio of the box changes by changing the distance between the driving and driven pulleys, which is done by a special stepper motor of the box. In addition, the CVT box includes planetary gears that are responsible for engaging reverse gear.

Hidden within the body of the Jatco CVT transmission are several key elements:

• variable speed pulleys;
• a steel belt connecting them;
• box valves and solenoids;
• planetary gears;
• clutch packages for reverse gear and Drive mode;
• high pressure pump;
• control block of the box.

In an extremely simplified way, a variator can be compared to a chain bicycle drive, where there are driving and driven sprockets connected by a chain, only instead of sprockets there are pulleys, and instead of a chain there is a box belt.

The input pulley of the box is connected to the engine in the form of a clutch, always operating in mode D. During operation, the secondary shaft of the box is pushed by the primary shaft due to the force transmitted by a special belt.

The box belt consists of many steel segments connected to each other by a dense steel tape.

It is assumed that the box belt is subject to little wear, since the steel is very strong and does not compress. The entire belt element of the box works as one steel body transmitting torque.

If the gear ratio needs to be changed, the transmission control module (TCM) changes the distance between the transmission pulleys, resulting in:

• the primary gearbox pulley rotates more slowly - the gear is downshifted;
• faster - increases.

If you need to switch to reverse, the planetary gear of the box is engaged (in normal driving mode it is passive). At the same time, the ability to change the gear ratio by the gearbox is blocked for safety reasons - to avoid accidental acceleration when reversing.

The nominal pressure developed by the oil pump of the box is 55 bar, and the maximum possible is up to 60. The CVT box uses several regulators that provide the following indicators:

• maximum 4 bar – for the lubrication and cooling system of the box;
• up to 10 bar – for the torque converter unit;
• up to 15 bar – for gearbox clutches.

Operational resource

If the car owner adhered to a calm style of driving the car, avoided sudden acceleration from a standstill, and properly warmed up the gearbox in winter, then the transmission on this crossover could last more than 300 thousand. In such cases, only scheduled repairs of the Nissan X-Trail variator , which consisted of replacing the belt and all consumables. If you practice an aggressive driving style, then a major restoration could be required already at 100,000 mileage.

Nissan X-Trail CVT repair in Moscow

Engine Nissan YD25DDTi

We will tell you about the Nissan Juke of the year of manufacture, with the JF015 CVT installed.

More precisely, a kind of hybrid between a CVT and a two-speed gearbox, which made it possible to reduce the cone, thereby increasing the gear ratio using two forward gears, but now we’re not talking about the design of this automatic transmission, but about its problems, and how we solved them!

The car came to us with a “childhood disease” of these CVTs, namely: it suddenly stopped moving forward, while driving backwards perfectly =)

Our craftsmen already knew how to repair this variator, so the owner was almost immediately given the amount of repairs, and we began to remove, repair defects, and also, in order not to waste time, which is never superfluous, to repair the gearbox.

During the troubleshooting, the same childhood disease was discovered, namely:

-Failure of the input shaft bearing

Unfortunately, in these types of transmissions, the input shaft bearing is a flaw, and the weak point of the entire gearbox because the shaft warps due to heavy loads, vibrations occur, and unfortunately, all this leads to the rapid death of the remaining gearbox components, which is what happened in this case.

As a result of a bearing failure, chips got into the pump, then along the chain into the cones and the variator belt.

Also at this checkpoint we found and eliminated another “childhood disease”, namely a broken sun gear, which you can see below in the photo.

Such a breakdown occurs due to heavy loads and sudden starts from a standstill.

Our technicians repaired the variator in a short time, and within a couple of days the car was given to the owner, along with warranty papers, for repairs.

Many owners are faced with the choice of what to install, a used automatic transmission, or to repair theirs?

In essence, by performing repairs you get a new unit, and installing a used automatic transmission is a lottery and, unfortunately, not always with a positive outcome.

Diagnostics of the Nissan X-Trail variator

Diagnosis of the Nissan X-Trail T31 or T32 variator comes down to following the following recommendations. First you need to get behind the wheel and drive off. If the start was smooth, without extraneous noise, everything is in order with the Nissan CVT package. Growling and noises indicate that the package is not working correctly - it is not a fact that it is completely faulty, but there are defects. You will need to check:

• variator oil level;
• smell and color of the liquid.

The motorist or service station employee takes out the dipstick and evaluates the shade of the oil. Ideally, the technical fluid should be light-colored, without dark spots, streaks, or other impurities. The aroma of burning is unacceptable.

Important! Taking into account the condition of the car (heated or cooled), the oil level will change. A hot engine contains more fluid than a cold engine.

Now you need to drip the liquid from the dipstick onto a white blank sheet of paper. Assess the presence of compactions and black spots on the drop. If they exist, we can talk about various types of malfunctions and the need for a more thorough check of the X-Trail variator.

It is imperative to inspect and test the CVT box - no cracks, nicks, or chips. The measuring tool will allow you to accurately assess the unevenness and distortions of the Nissan variator. You need to understand that if there are chips or nicks, cracks may soon appear in the working parts of the mechanism, and the variator box will begin to gradually deteriorate. All this leads to the fact that the Nissan X-Trail T31 variator twitches, the mechanism jams and jams.

The next point that needs to be clarified as part of the diagnosis is the current state of the speedometer. If the unit is not working, the reason may lie in the transition of the belt part to the emergency position. When the car is moving at low speeds, belt deviation will go unnoticed, but for racing this situation is deplorable. The main unpleasant consequences are sudden emergency braking and breaks in the working parts of belt drives.

To understand the causes of vibration of the Nissan X-Trail variator and the occurrence of other problems, you need to:

1. Warm up the car while driving.
2. Disconnect battery power consumers.
3. Insert the keys into the lock and activate the “ON” position. Repeat the “OFF-ON” switch several times, leaving the device in the on position.
4. Turn on the ignition, wait for the light bulb to light up, then turn it off.
5. Press the brake pedal. Activate the “drive” mode for the selector.
6. Turn the ignition back on, release the brake pedal, and move the selector knob to position L.
7. Depress the gas and brake pedals, move the selector to “drive”, release a couple of pedals.

At this point, the self-diagnosis of the Nissan X-Trail variator can be considered complete. If the emergency mode is not deactivated, it is worth checking the Step Motor windings at the variator box connector in the area under the battery. Through this connector you can access all electronic internal components.

Choosing oil for CVT X-Trail gearboxes

Reasons for unstable operation and oil consumption on the Nissan 3.5 V6 VQ35 engine

For replacement, it is advisable to use the transmission oil recommended by Nissan for CVTs CVTFluid NS-2:

For a complete replacement you will need 2 four-liter canisters - with a small margin.

When to change the oil in the X-Trail variator On average, changing the oil in the Nissan X-Trail T31 variator is recommended after 50-60 thousand km. mileage Some drivers try to prevent possible transmission malfunctions by changing the fluid after 40-50 thousand km, but this measure seems unnecessary.

It is mandatory to change the oil in the box during any service and repair operations on it.

Replacement Tips

Ideally, the oil change in the X-Trail variator should be done at an authorized service center, where there is the necessary equipment and professionals with the skills and knowledge to service Nissan gearboxes. But in order to save money, some car owners venture on an independent procedure.

On a Nissan X Trail, changing the oil in the variator will require:

• Nissan recommended CVT oil for gearboxes;
• new box oil coarse filter (part number 32101EE) and fine filter (2824A006);
• oil cooler gasket (its number is 2920A096) and box pan (313971XF0C);
• a container of 8 liters for waste liquid and a rag for wiping the box.

Before changing the oil in the Nissan X Trail T31 automatic transmission, you should make a short trip of a couple of kilometers in the car, or simply warm up the car so that the oil and gearbox reach operating temperature.

After warming up, the car is driven onto a lift, overpass or inspection pit. Further sequence of actions:

Place a prepared container under the drain hole of the box. The hole plug is unscrewed. The oil is carefully poured into the container from the box, making sure that the heated liquid does not fall on exposed parts of the body.

At the next stage, the pan is dismantled and the remaining liquid is drained.

It must be cleaned of metal waste and dust that accumulates on the bottom of the box tray, which is magnetized specifically to catch foreign particles.

• The old gasket is replaced.
• Next, the old box oil filter is removed and a new one is installed.

After installing the filter, reassembly is carried out.

Its dismantling and replacement is a little more complicated. To do this you need:

Remove the left wheel, remove the pistons with a screwdriver and bend the interfering fender liner.

Gain access to the oil filter under the hood by removing the battery, dismantling its mounting platform and removing the air filter box.

Having removed the fender liner, you can unscrew the third bolt, disassemble the oil cooler and remove the filter from it:

Next, change the filter (number 2824A006) and its rubber seal.

Oil is filled through the hole in the dipstick of the box. You should pour in the same amount as was drained when removing the old oil, usually about 7.5 liters. When the oil is filled, the system is assembled, the car starts and a test drive is made for a couple of kilometers, after which you should check the oil level and add it to the box if necessary.

The key point in the long and flawless operation of the X-Trail CVT transmission is compliance with operating rules, timely change of transmission fluid and careful driving, without “extreme” or off-road voyages. In this case, the box can last for decades, delighting the owner with reliable operation. Failure to follow the rules will lead to costly repairs.

What drivers say about replacing the X-Trail CVT

1. Restore or buy used .
   First of all, the repairs will not be cheap; for this amount you can install two contract units. In addition, there were many cases when, after repair, X-Trail CVTs worked for approximately 35,000 km under warranty and again became unusable. For contract soldiers, the guarantee is of course not 30,000 km, but it is also available.
2. Which model to choose ?
   The CVT box version (RE0F10A) is improved. Its main differences are that the variator pulleys weigh less, and the drive pulley is single-piston. Also in this version, the pressure in the drive pulley circuit was increased to 60 kg/cm. The advantages of such a box include an improved external processing frequency. As a result, the risk of fluid adhesion and foaming in the X-Trail transmission is reduced.
3. Signs that the CVT is losing functionality.
   The following indicates a malfunction:
   • Signs of inoperability of the X-Trail variator were observed until complete failure. There were two of them. The first is that at some point before accelerating, the car seemed to be slipping with characteristic sounds, as if the engine was starting to stall, but this did not happen.

   The second symptom: at a speed of 80 km/h I pressed the gas to accelerate, and the tachometer needle jumped up to 4,000 rpm. When the speed increased to 100–120 km/h, the needle returned to the 2,000–2,500 rpm mark. At this time, a slight shock could be felt. Perhaps this is normal for the X-Trail CVT gearbox if the device was shifting into an upshift at that moment.

4. A day before it became clear that the variator had “died,” quite strong shocks were felt. In particular, this happened at a time when the tachometer needle reached 2,000 rpm. Then the tremors subsided and the car drove as usual.
5. It also happens unexpectedly .
   Everything seemed to be fine with the X-Trail variator. During the morning drive, all indicators remained normal, but then when I released the gas, a vibration began to be felt, as if dirt had stuck to the wheels. At the same time, at the moment of acceleration, a noise appeared like from a bearing separator. It was immediately decided to disassemble the car. It turned out that the belt had also started to break. I didn’t see any point in repairing the parts: two pulleys and a belt would cost 40–60 rubles, plus other small expenses. It's better to buy a contract one.

rumble of the variator x trail

The rumble comes from the cone bearings; metal particles get inside; otherwise, the factory installed a batch of defective bearings, which, unfortunately, is not unique at the moment. The rumble of the variator can actually appear from 10,000 km, and besides, as statistics say, it also simply disappears. This ailment can be treated by changing 4 bearings; the official representative charges about 40 thousand rubles for such work. According to the regulations, oil changes occur every 60 thousand km, but two filters do not have the basis to cope with small iron chips. Experts recommend changing the transmission oil more often, but there is no idea, because the rumble occurs on uncontaminated ATF. You can find out how to change the oil in the variator in your staff below. Oil volume in the Nissan

X
trail
T 31 is equal to plus or minus 7.5 liters, it turns out that for a change you need two canisters of the unique NS-2 transmission water, catalog number KLE5200004EU. Currently, this problem, which remains to be done by our client, manifests itself less often on new Nissan cars. When changing transmission oil, an indispensable condition is to clean the magnets in the crankcase and change the filters.

If you do not clean magnets from iron shavings, they will no longer work.

Automatic transmission Development of repairs Our address: Moscow, Volgogradsky Prospekt 32 building 14 Contacts, 7 495.

For any additional questions, call our technical center for automatic transmission repair. Phone number of your individual master.

Pros and cons of the Nissan X-Trail CVT

Advantages of X-Trail CVT transmissions:

1. A simple box in terms of design that simplifies maintenance and diagnostics of the unit.
2. Open access to the gearbox makes it easy to change the oil.
3. CVT is equipped with magnets, they are mounted in pallets and attract metal shavings.
4. There is no need to warm up the liquid when starting, there is an additional heater for the lubricating part.
5. Increased service life of the Nissan X Trail T31 variator, largely due to the use of a single-piston shaft, which reduces the weight of the pulleys and the degree of their wear.
6. The presence of an air radiator reduces the degree of adhesion and foaming of the transmission fluid, and prevents overheating of the box.
7. Smooth, fast acceleration due to the lack of gears.

Important! Compared to a manual transmission, cars equipped with CVTs consume more or less gasoline when compared to a conventional automatic.

Flaws:

• sensitivity to incorrect operation;
• expensive repairs;
• failure of the entire system if one sensor breaks down.

If the operating conditions are observed, there will be no unnecessary problems. More about them later.

How to warm up the variator

In winter, owners of CVTs are faced with the problem of warming up; who knows that it is prohibited to use gas in a parking lot to warm up the oil in the CVT. During this operation, the chain wears out very quickly and iron dust gets into the same bearings, which remains to be done by our client. On the refreshed trail, automatic ATF water heating is installed. What should you do with the old model? The description of warming up the variator is quite ordinary. Move the selector to position D or R and hold the brake pedal without moving for 15 - 30 seconds. With this clever method, the oil in the variator warms up faster. After warming up, drive with a low load and the variator will surprise you with its increased resource.

Typical problems

CVTs on the X-Trail are characterized by a number of typical faults, some of which are purely age-related or related to poor maintenance of the gearbox.

Noise from the depths of the box

This occurs due to wear and destruction of the box bearings. When this happens, the driver hears a hum emitted by the box. This usually happens after a mileage of about 50 thousand km, and can only be eliminated by replacing damaged elements.

The box bearings can become unusable if wear products (metal shavings and other foreign impurities) enter the system. Therefore, it is advisable to change the oil in the box within the prescribed time frame.

Consequences of destruction of box bearings:

The car lost its dynamics and accelerated worse

This indicates old oil in the box that has not been changed for a long time. There is only one remedy - change the fluid in the transmission as soon as possible, completely flushing the system and cleaning the box from wear products (metal dust, shavings).

The box has gone into emergency mode

This can mean a wide range of problems - from transmission oil leaks to physical damage to CVT components. You need to make sure that there is oil in the box, and then try to find a car service specializing in CVTs for a full diagnosis. The box may need to be repaired or even replaced.

One of the common reasons is overheating of the box. A special sensor is responsible for temperature control, which puts the box into emergency mode when threshold values ​​are exceeded.

Box jerking when driving

Sometimes the box can “kick”, like a classic faulty hydraulic mechanics, this is especially felt when driving with cruise control on. As a rule, this indicates a malfunction of the hydraulic valve of the box, which requires a visit to the service station and expensive repairs. Under the influence of wear products, the pressure-reducing valve of the gearbox pump, which maintains oil pressure, begins to “wedge” in certain positions, the pressure ceases to meet the standard values, and as a result, the rotation of the drive and driven pulleys is mismatched, and the gearbox belt slips.

In these cases, it is advisable to seek box repair as early as possible, this will help avoid replacing the pulleys; it will be enough to grind them and repair the box valve and replace the belt (the latter will have to be done in any case, since the box belt has already begun to deteriorate).

Box jolts when switching from parking mode to R or D

This problem awaits those who like to “rock” their car with quick mode switches. Such manipulations with the box lead to rapid wear of the planetary clutches and their replacement.

An atypical problem is burnout of the electronics of the box, but this occurs quite rarely.

Typical malfunctions and signs of failure of a V-belt variator

The service life of the variator is greatly reduced due to improper operation and infrequent maintenance. In old transmission fluid, additives do not work and wear products accumulate, which leads to damage to the rubbing components of the variator.

Symptoms of a faulty JF016E variator:

• Noise when the variator is running.
• Limiting engine speed.
• Slow acceleration of the car.
• Slipping when changing gears.

The hum in the variator is a consequence of worn components, most often bearings. Metal shavings that form in the oil during prolonged use damage the surface of the bearings, causing them to become loose and produce a hum.

Failure to promptly replace the transmission fluid can also cause the oil pump to not operate correctly. Friction dust in the oil gets on the surface of the pressure relief valve, so it begins to get stuck in the half-open position. Due to the intermediate position of the valve, pressure is lost, which leads to improper operation of the drive and driven pulleys and causes slipping when changing gears.

A loss of vehicle power may be due to a broken metal variator belt. The average service life of a belt is 100–150 thousand km under conditions of timely maintenance, but the belt often wears out earlier. The main danger to the normal operation of the belt is movement on an unheated box, since cold oil does not have time to lubricate the rubbing elements of the belt. In this case, the belt wears out the fastening notches and subsequently slips off the cones, which leads to delays when shifting gears.

Reliability of the X-Trail T31 variator

The X-Trail model T31 can be equipped with variators manufactured by Jatco type RE0F06A or a modified gearbox RE0F10A (also designated JF011E. The box does not have some design flaws).

CVT JF011E:

In the automotive community, there is a strong prejudice against CVT transmissions: it is believed that the boxes are short-lived, break down quickly, are demanding in terms of operating conditions and are unsuitable for installation in cars with a powerful engine. Nissan tried to dispel this prejudice by installing a CVT box in the fairly powerful X-Trail all-terrain vehicle.

If the box is used correctly, the pulleys are subject to minimal abrasion, the box chain must be replaced about once a year, and diagnostics of the machine, including the gearbox, should be carried out every six months.

Reasons for opinions about the “unreliability” of boxes

There are two main reasons why a particular automotive solution acquires a reputation for being unreliable:

• improper operation;
• design flaws made by the developer, as a result of which parts experience increased wear, or the driver gets the opportunity to operate components in non-standard modes, damaging the gearbox and engine.

In practice, drivers who are not familiar with the operating rules of the box complain about the “unreliability” of the variator. This is especially true for fans of fast, sharp driving and street racing: among the latter, the “unreliability of the CVT” has become the talk of the town.

The reason for this is obvious. During a sharp start with slipping and roaring of the engine, when the gearbox is operated in extreme mode, the steel belt included in its design slips on the pulleys, damaging and scratching the metal. Further, during fast driving, the resulting metal shavings enter the oil, without having time to settle in the box filter, penetrate into the channels and mechanisms of the box, disabling it completely. This way you can “kill” even an almost new box, with a resource that has not yet been fully developed.

Novice motorists have better luck with CVTs, who, as a rule, carefully study the instructions for the car and the rules for operating the box. Their gearbox can “run” for decades, undergoing periodic scheduled maintenance.

Necessary materials for changing X Trail variator oil

Well, first of all, you will need to buy two 4-liter cans of NISSAN CVT NS-2 transmission oil (cat. no. KLE5200004EU). The pleasure is not cheap, one of these will cost about 3.5 thousand rubles, but it’s better not to regret it and take the original. In addition to the oil, you need to buy an MO filter with a gasket and an oil pan gasket.

For some details on purchasing consumables for changing the X Trail variator oil, watch the video:

Changing the oil in the variator must be done with the variator warmed up. The manual says that the first replacement is at 60 thousand, and then this procedure is repeated every 30,000 km (partial replacement).

Maintenance of the Nissan X-Trail variator

Maintenance work for the Nissan X-Trail variator includes:

1. Diagnostics – computer testing accurately shows faults and weak points. If the oil has a burning smell or is dark in color, an in-depth check is needed.
2. Routine repairs - transmission flushing, radiator replacement, line flushing.
3. Oil change. You only need to fill in the original product, since counterfeits have the wrong composition and can negatively affect the operation of the transmission. It is best to change the filter device along with the lubricant. Be sure to monitor the level to avoid overflow. If there is more lubricant than required according to the specifications, the pressure inside the box will increase sharply. The plug will begin to squeeze out, and consumables may leak.

The lubricant level must be carefully monitored; if it is low, the box will fail quickly. Recovery will be impossible.

Features of CVT repair

Repair of the Nissan X Trail variator may involve changing the oil. You should purchase CVTF+4 working fluid. It helps maintain the functionality of the box for a long time. The service life of the components that belong to the CVT box also depends on the timeliness of oil changes. If you stick to aggressive driving, oil changes should occur more often. Especially for this purpose, the crossover is launched onto an overpass. To open access to the variator, it is necessary to remove the coarse filter. Next, remove the engine protection, unscrew the drain plug, drain the oil, and tighten the plug.

In addition, the filter is changed, the crankcase bottom is washed, and new oil is added. The oil level in the system is determined using a dipstick. The level must be measured with the engine running. If the level exceeds the maximum mark, this means an overflow of fuel. In most cases, transmission oil is changed after 50,000 km.

CVT dipstick position

The variator belt can be removed with your own hands without dismantling the box. To do this, it is necessary to remove the pan, drain the fuel from the box, dismantle the cover and shafts. In this case, the condition of the bearings should be checked. If wear is noted on the belt, it must be replaced.

It is advisable to pay attention to the condition of the oil pressure reducing valve when jerking occurs when movement occurs. The presence of knocking noises is evidence that there is loose fixation of parts, which causes backlash

The presence of knocking noises is evidence that there is loose fixation of parts, which causes backlash.

Towing a vehicle with a broken belt is not recommended. It's better to call a tow truck. The inappropriateness of towing is explained by the fact that the pulleys and gear teeth will experience enormous loads, which is why they will lose their integrity.

The occurrence of breakdowns on the installed Nissan x Trail T31 (II generation) variator can be prevented. To do this, you must adhere to certain rules for operating a foreign car. Aggressive driving and off-road travel are the main reasons why urgent repairs to the CVT transmission are required. During an X Trail CVT overhaul, all seals and gaskets are replaced. Original spare parts must be installed.

CVT repair, regardless of its complexity, must be carried out in accordance with the manufacturer's recommendations.

Oil service

The JF011E variator used special Nissan CVT oil, which was recommended to be changed every 50,000 kilometers. The quality of the lubrication on this variator needed to be given increased attention; the ATP fluid quickly lost its properties, which led to belt slippage and premature wear of the gearbox. Repair of the Nissan X-Trail variator in such a case consisted of replacing expensive cones.

With the modern JF017E variator, it was recommended to use NS-3 gear oil, which was changed by partial replacement every 60-80 thousand mileage. The modern gearbox turned out to be critical to cleanliness and oil level, so this service should not be neglected. At the same time as the ATP liquid, the fine filter cartridge and the coarse filter located in the hydraulic unit were replaced.