CVT JF016E, installed on Nissan Murano Z51 (2015–2021), is known for its reliability, but even it requires periodic maintenance. One of the common problems is oil leak through pan gasket. It cannot be ignored: a decrease in the transmission fluid level leads to overheating of the belt, accelerated wear of the cones and, in the worst case, to complete failure of the variator within 10–15 thousand km after the first signs of leakage.

In this article, we will look at how to independently diagnose a malfunction, select an original gasket (or a decent analogue), and carry out a replacement without errors. We will pay special attention hidden nuances: for example, why you can’t use silicone-based sealant and how to properly crimp the pan after installation. If you have never worked with CVTs, don’t worry: step-by-step instructions with photos and video links will help even beginners cope.

Signs of wear on the variator pan gasket Murano Z51

The first symptoms of a problem often go unnoticed until the leak becomes critical. Here's what you should pay attention to:

  • 🔴 Oil stains under the car in the area of the variator (front, closer to the left wheel). The liquid has a reddish or brown tint and a specific odor.
  • 🔧 Reduced oil level in the variator for no apparent reason. Check the dipstick CVT Fluid Dipstick every 5 thousand km - the normal level should be between the marks MIN And MAX on a heated box.
  • ⚠️ Jerks or delays when switching. The variator begins to “stupid” due to lack of oil, especially noticeable during sharp acceleration.
  • 🔥 Box overheating. If the indicator on the dashboard comes on AT TEMP (or CVT OIL TEMP in some versions), this is a signal of a critical condition.

It is important to distinguish a gasket leak from other problems. For example, if oil oozes through drive shaft oil seal, the stains will be closer to the wheel and not under the pallet. Also check the condition magnets in the tray - if metal shavings have accumulated on them, this is a sign of wear on the internal parts of the variator, and not just the gasket.

⚠️ Attention! If along with the leak you notice crunching or grinding When driving, do not limit yourself to replacing the gasket. Urgently diagnose the condition of the belt and cones - the variator may need major repairs.
📊 How often do you check the oil level in the variator?
  • Every 5 thousand km
  • Only when problems arise
  • Once a year
  • Never

Which gasket to choose: original vs analogues

Original sump gasket for variator JF016E has an article number 31397-3JX0A (Nissan). It is made from heat resistant rubber, withstands temperatures up to +150°C and aggressive effects of transmission fluid NS-3. Cost - from 1,200 to 1,800 rubles, depending on the region.

If the original is difficult to find, consider proven analogues:

Brand Article Material Average price, ₽ Features
Ajusa 14029600 Rubber + metal reinforcement 800–1 100 Suitable for Murano Z51 And Pathfinder R52
Elring 463.310 Synthetic rubber 950–1 300 Reinforced edge, no sealant required
Reinz 71-50134-00 Multilayer rubber 1 000–1 400 New pan bolts included
Genuine 31397-3JX0B Original composition (analogue 3JX0A) 1 300–1 600 Suitable for CVTs Nissan And Renault

When choosing an analogue, pay attention to gasket thickness - it must be at least 1.5 mm. Thinner options (1.0–1.2 mm) may not provide a tight seal when crimped. Also avoid pads with foam base - they are quickly destroyed by high temperatures.

⚠️ Attention! Gaskets from Nissan X-Trail T32 (article 31397-4M50A) are similar in appearance, but have a different bolt hole diameter. Install them on Murano Z51 you can't!
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Before purchasing a gasket, check its compatibility using the vehicle's VIN code on the website Partsouq or Nissan TechInfo. This will help avoid mistakes during selection.

Tools and materials for replacement

To work you will need:

  • 🔧 Set of sockets and socket wrenches (10 mm, 12 mm, 14 mm).
  • 🔩 Torque wrench (for tightening bolts with a torque of 8–10 Nm).
  • 🛠️ Plastic scraper to clean the pan from old sealant.
  • 🧴 Carburetor cleaner or brake cleaner (For example, Abro or Liqui Moly).
  • 🛢️ New oil for variator (Nissan CVT Fluid NS-3, 5–6 liters).
  • 🔧 New CVT oil filter (article 31726-3JX0A).
  • 🧲 Set of magnets (for collecting metal shavings).
  • 📦 Drain plug o-ring (article 11026-01M02).

Also prepare oil drain container (at least 7 liters), gloves And rags. If you plan to wash the pan, take gasoline or kerosene (but not acetone - it corrodes rubber!).

Drain the old oil from the variator|Clean the pan and magnets from chips|Check the condition of the oil filter|Buy a new gasket and seals|Prepare a torque wrench-->

Step-by-step instructions for replacing the gasket

It is more convenient to carry out work on lift or inspection hole. If they are not there, use a jack with stops and be sure to secure the car with the hand brake.

Step 1: Drain the oil

Warm up the variator to operating temperature (drive 5–10 km). Place a container under the drain plug (it is located in the back of the pan) and unscrew it with a 14 mm wrench. Wait for the oil to drain completely (may take 15–20 minutes). After that, unscrew filler plug (10 mm wrench) - this will speed up the process.

Step 2. Removing the pallet

Unscrew all the pallet bolts (there are 18 of them) in a criss-cross pattern to avoid deformation. Carefully pry the pan with a plastic scraper - it may “stick” to the variator body. Drain the remaining oil and clean the magnets from metal shavings (their presence is a reason to diagnose the variator!).

Step 3. Removing the old gasket

Remove the remains of the old gasket from the pan and the variator housing. Use soft scraperto avoid damaging aluminum surfaces. Clean the seats bryke-cleaner and wipe dry. Check if there is a variator on the body burrs or cracks - if there is, it will require grinding or replacement.

Step 4: Install a new gasket

Apply a thin layer anaerobic based sealant (For example, Loctite 574 or ThreeBond 1217) onto the variator housing at the joints. Install the gasket by lining up the bolt holes. Do not use silicone sealant — it cannot withstand high temperatures and can clog oil channels!

Step 5: Reassembly

Reinstall the pan and tighten the bolts by hand. Then tighten them with a torque wrench to 8–10 Nm in order "from the center to the edges". Install a new oil filter (wet it in oil first) and tighten the drain plug with a new O-ring.

Step 6. Filling with oil

Fill new oil through the filler hole to the level MIN on the dipstick. Start the engine and let the CVT idle for 2-3 minutes. Then add oil to the level MAX. Repeat the check after a test drive (5–10 km).

What to do if the leak does not stop after replacement?

If after 100–200 km the oil begins to ooze again, check:

1. **Bolt tightening torque** - the pallet may have become warped due to uneven compression.

2. **Condition of the mating surfaces** - if there are burrs on the variator housing or pan, grinding will be required.

3. **Quality of the gasket** - some analogues (especially cheap ones) tan when heated and allow oil to pass through.

4. **Condition of the variator breather** - if it is clogged, excess pressure can force oil through the gasket.

Common mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when replacing gaskets. Here are the most critical of them:

  • 🔧 Using silicone sealant. It is not compatible with oil NS-3 and may cause blockage of oil passages. Use only anaerobic sealants.
  • 🔩 Re-tightening of pallet bolts. The maximum torque is 10 Nm. Exceeding will lead to deformation of the pallet or thread failure.
  • 🧴 Incomplete oil change. If you only drained 3-4 liters out of 7, the old oil will mix with the new and shorten its life. Use method complete replacement (through a device or multiple drain-fill).
  • 🔍 Ignoring chips on magnets. If a lot of metal dust has accumulated on the magnets, this is a sign of wear on the cones or belt. In this case, replacing the gasket is a half-measure.
  • 🚗 Test drive without checking the oil level. After replacement, be sure to drive 5–10 km and recheck the level. CVT JF016E sensitive to underfilling or overfilling.

Another common mistake is reusing the gasket. Even if it looks intact on the outside, the rubber loses its elasticity after compression and will not provide a tight seal. Also, don't skimp on oil filter — its resource is limited to 60–80 thousand km.

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If, after replacing the gasket, the variator began to “kick” or noise appeared, most likely one of two things happened: either a foreign body (chips, dirt) got into the box, or the wrong type of oil was poured. In both cases, repeated disassembly and washing is required.

How much does service replacement cost vs DIY repair?

The cost of replacing the variator pan gasket in the service depends on the region and level of the service station. On average prices are as follows:

Type of work Cost, ₽ (Moscow region) Cost, ₽ (regions)
Replacing the gasket (without oil) 3 500–5 000 2 500–3 500
Complete oil change NS-3 (6 liters) 1,800–2,500 (oil) + 1,000 (labor) 1,500–2,000 (oil) + 800 (labor)
Replacing the oil filter 500–800 (part) + 500 (labor) 400–600 (part) + 300 (work)
CVT diagnostics (if a malfunction is suspected) 1 500–2 500 1 000–1 800

When repairing yourself, your costs will be limited to the cost of spare parts and oil:

  • Gasket: 800–1,800 RUR
  • Oil NS-3 (6 l): 3,000–4,000 RUR
  • Filter: 500–800 RUR
  • O-ring: 100–200 ₽
  • Sealant: 300–500 RUR

Total: 4 700–7 300 ₽ against 6 000–10 000 ₽ in the service. The savings are obvious, but only if you are confident in your abilities.

Frequently asked questions about replacing the variator gasket Murano Z51

Is it possible to drive with a leaking pan gasket?

Short term (1-2 weeks) - yes, but only if the oil level does not drop below MIN. However, the risk of overheating of the variator increases many times over. It is optimal to fix the leak within 3-5 days after discovery.

How often should the gasket be changed?

In the regulations Nissan replacement of the gasket is not prescribed, but in practice its service life is 80–120 thousand km. If you regularly service the variator (change the oil every 60 thousand km), the gasket will last longer.

Can I use a gasket from another variator?

No. For example, a gasket from Nissan Qashqai J11 (variator JF015E) will not fit - the hole diameters and shape are different. Even gaskets for Murano Z50 (previous generation) are not interchangeable with Z51.

What happens if you don't change the oil filter when replacing the gasket?

The filter becomes clogged with wear products and stops passing oil in full. This leads to oil starvation variator, accelerated wear of the belt and cones. In critical cases, the box may go into “emergency mode”.

Do I need to flush the pan when replacing the gasket?

Definitely! Metal shavings and deposits accumulate in the pan, which, when released back into the variator, accelerate its wear. Rinse the tray gasoline or special cleaner (For example, Liqui Moly Getriebe-Reiniger).