Inner CV joint boot Nissan X-Trail T31: selection, replacement and repair tips

Inner CV joint boot on Nissan X-Trail T31 - a detail that often goes unnoticed until it begins to “signal” problems. Meanwhile, its damage leads to dirt and moisture getting into the constant velocity joint, which can lead to costly repairs. Crossover owners are faced with the need to replace the boot both during scheduled maintenance and during sudden breakdowns - for example, after off-road driving or due to natural wear of the tires.

In this article we will look at how determine the malfunction of the internal boot, what Article numbers of original and analog parts suitable for X-Trail T31 (including versions with motors MR20DE, QR25DE and diesel M9R), and also give step-by-step replacement instructions taking into account the nuances of the design. We will pay special attention to typical mistakes that even experienced craftsmen make, and ways to extend the service life of a new boot.

Signs of damage to the inner CV joint boot on a Nissan X-Trail T31

Unlike the external boot, which can be inspected visually, the internal boot is hidden behind the drive shaft and is often diagnosed by indirect signs. Main symptoms indicating a problem:

• 🔊 Crunching or clicking noise when driving at low speeds with the steering wheel turned (especially noticeable when parking). The sound comes from the side of the damaged boot.
• 💧 Traces of grease on the inside of the wheel or oil pan. If the boot is torn, the CV joint lubricant sprays out when rotating.
• 🔧 Vibration at a speed of 60–80 km/h, which is mistaken for wheel imbalance. The reason is dirt getting into the hinge and jamming it.
• 🚗 Car withdrawal to the side when braking or accelerating. This happens if the CV joint begins to “eat up” due to lack of lubrication.

On Nissan X-Trail T31 with all-wheel drive (system All Mode 4x4-i) the internal boots wear out faster due to the increased load on the front axle. Cars with a mileage of over 100 thousand km and operated in Russian winter conditions are especially vulnerable (the rubber of the anthers hardens in the cold and cracks).

⚠️ Attention: If you ignore the crunching of the CV joint for more than 1-2 weeks, the joint may completely fail. The repair will cost 3–5 times more than replacing the boot (the price of a new CV joint for T31 - from 8,000 to 15,000 rubles).

Articles and analogues of internal boots for Nissan X-Trail T31

Original anthers from Nissan They are distinguished by high quality rubber, but their price is often inflated. The table below shows the article numbers for different versions. X-Trail T31 (2007–2013), as well as proven analogues from GKN, SKF and other brands.

Modification X-Trail T31	Original article	Analogs (brand + article)	Notes
Gasoline 2.0 (MR20DE), front-wheel drive	39310-4M000	GKN ADG023, SKF VKJA 6636	Suitable for left and right side
Gasoline 2.5 (QR25DE), four-wheel drive	39310-4M010 (left) 39310-4M011 (right)	Febi 28216, Mapco 60607	Boots for 4WD have a reinforced fastening
Diesel 2.0 (M9R), four-wheel drive	39310-4M025	Loebro 302044, Sasic 200564	Requires lubrication Molykote BR2 Plus (250 g)
All modifications (universal kit)	—	GSP NCV30014, Meyle 100 436 0014	Includes clamps and lubricant

When choosing an analogue, pay attention to:

• 🔹 Material: optimal - heat resistant EPDM rubber (does not tan in the cold). Cheap anthers from neoprene serve 2 times less.
• 🔹 Equipment: The kit should contain clamps (preferably metal with a screw clamp) and lubricant for the CV joint.
• 🔹 Country of manufacture: European brands (GKN, SKF) more reliable than Asian ones (Febi, Mapco).

Tools and preparation for replacing the boot

To replace the inner CV joint boot with Nissan X-Trail T31 you will need:

• 🔧 Special tools:
  • Circlip remover (e.g. Kukko 21/1).
  • Clamp pliers (Knipex 13 95 200).
  • Torque wrench (hub nut tightening torque - 210–230 Nm).
• 🔨 Consumables:
  • Grease for CV joint (Molykote BR2 Plus or LIQUI MOLY LM47).
  • Clamps (if not included in the boot kit).
  • Sealant Loctite 577 (for hub nut thread).
• 🚗 Additionally:
  • Jack and supports (or lift).
  • WD-40 for loosening stuck nuts.
  • Plastic hammer (to avoid damaging the boot during installation).

Before starting work:

1. Place the car on a flat surface and secure the rear wheels with shoes.
2. Loosen the hub nut (it is tightened with a large torque!) before the car is lifted.
3. Remove the wheel and disconnect the brake caliper (hang it on a wire to avoid damaging the hose).

Loosen the hub nut|Remove the wheel and caliper|Clean the drive shaft from dirt|Check for grease and clamps included-->

⚠️ Attention: On X-Trail T31 With an automatic transmission, before removing the drive shaft, it is necessary to drain some of the oil from the gearbox (about 0.5 l), otherwise, when the shaft is removed, it will flow out through the oil seal. Use a container with graduated measurements!

Step-by-step instructions for replacing the inner boot

The process of replacing the boot with Nissan X-Trail T31 takes 2–3 hours (excluding draining the oil from the automatic transmission). The main difficulty is to correctly remove and install the CV joint retaining ring. Below are detailed instructions taking into account the nuances of the model.

1. Removing the drive shaft

After preparation (see previous section):

1. Unscrew the hub nut and remove it (you may need a wrench extension).
2. Disconnect the steering knuckle from the steering knuckle (use a puller).
3. Press the ball joint out of the lever (carefully so as not to damage the support boot!).
4. Remove the drive shaft from the hub by pulling it towards you. If the shaft is sour, tap it with a plastic hammer.

2. Disassembling the CV joint and replacing the boot

Inner CV joint on T31 secured to the gearbox with a retaining ring. To remove it:

1. Clamp the shaft in a vice (through soft pads!).
2. Remove the old boot by cutting off the clamps with wire cutters.
3. Using a puller, remove the retaining ring from the shaft (direction - to the box).
4. Carefully slide the CV joint along the shaft to make room for the new boot.

Installing a new boot:

1. Apply a thin layer of lubricant to the inner surface of the boot.
2. Place the boot on the shaft, straightening the corrugations (they should “look” towards the box).
3. Install new clamps, but do not tighten them all the way.
4. Thread the CV joint back onto the shaft and secure with the retaining ring.

3. Assembly and testing

After installing the boot:

1. Tighten the clamps (they should fit snugly, but not pinch the rubber).
2. Apply lubricant to the shaft splines and insert it into the gearbox (you will hear the snap ring click).
3. Reassemble the assembly in reverse order, remembering to tighten the hub nut with a torque wrench.

What should I do if the locking ring does not lock?

If the ring does not click when installed, check:

1) Correct position of the CV joint on the shaft (must rest against the shoulder).

2) Condition of the groove for the ring (in case of corrosion, clean it with a file).

3) The ring itself sometimes becomes deformed when removed. In this case, replace it (part no. 39335-4M000).

Typical mistakes when replacing anther and how to avoid them

Even experienced craftsmen make mistakes that lead to premature failure of the boot. Let's look at the most common ones:

• 🔧 Incorrect installation of clamps:
  • The clamps are tightened too loosely → the boot slips when moving.
  • The clamps are overtightened → the rubber cracks at the fastening points.

  Solution: Use a torque wrench for the clamps (torque - 0.8–1.2 Nm) or force limiting pliers.

• 🛢️ Lack or excess of lubrication:
  • There is little lubrication → The CV joint runs “dry” and wears out quickly.
  • Too much → excess is squeezed out through the boot.

  Solution: For X-Trail T31 enough 80–100 g lubricants per CV joint. Apply it evenly, without lumps.

• 🔄 Damage to the box seal:
  • If the shaft is not carefully removed, the automatic transmission/manual transmission oil seal breaks → oil leaks.

  Solution: Before removing the shaft, wrap its end with a soft cloth and rock it from side to side without applying force along the axis.

How to extend the service life of a CV joint boot

Average life of the internal boot for Nissan X-Trail T31 — 80–120 thousand km, but with proper use it can be increased to 150–180 thousand km. Tips:

• 🚿 High pressure washing: Do not direct the water jet at the anthers! Wash your car in a touchless car wash or use a brush.
• ❄️ Winter operation: Before frost, treat the anthers with silicone grease (WD-40 Specialist Silicone), so that the rubber does not harden.
• 🔧 Diagnostics: Every 20 thousand km check the boots for cracks, especially after off-road driving.
• 🛣️ Driving style: Avoid sudden starts with the wheels turned out - this increases the load on the inner CV joints.

If you often drive on primer roads, install protective plastic shields on anthers (for example, from Rally Armor). They prevent the entry of stones and sand.

Cost of replacing a CV joint boot at a service station vs self-repair

Prices for replacing the inner CV joint boot at Nissan X-Trail T31 vary depending on the region and type of service station:

Service type	Cost of work (rub.)	Cost of spare parts (RUB)	Total (RUB)
Official dealer Nissan	4 500–6 000	2,500–4,000 (original)	7 000–10 000
Unofficial service	2 500–3 500	1,200–2,500 (analog)	3 700–6 000
Self-replacement	—	800–2,000 (analogue + lubricant)	800–2 000

Self-repair is profitable, but requires:

• 🔧 Skills in working with suspension (especially if you need to drain oil from an automatic transmission).
• 🛠️ Availability of special tools (circlip remover, torque wrench).
• ⏱️ Time (the first replacement takes 4-5 hours).

If you are not confident in your abilities, it is better to contact a service station. Errors during replacement (for example, incorrect installation of the retaining ring) can lead to destruction of the CV joint after 1–2 thousand km.

FAQ: Frequently asked questions about CV joint boots on the Nissan X-Trail T31

Is it possible to drive with a torn inner boot?

Short-term (1-2 days) - yes, but only if the CV joint is not yet crunching. Driving for a long time without a boot can cause dirt to get into the joint and cause it to jam. If the boot is torn and a new one is not available, temporarily wrap it with electrical tape (but not more than 200 km!).

What lubricant should I fill the CV joint when replacing the boot?

For Nissan X-Trail T31 Lubricants based on molybdenum disulfide are recommended:

• Molykote BR2 Plus (original for Nissan).
• LIQUI MOLY LM47 (universal, suitable for all types of CV joints).
• Castrol LMX (good budget option).

Do not use graphite or lithium lubricants - they do not withstand loads in the CV joint.

Is it necessary to change the lubricant in the CV joint when replacing the boot?

Yes, definitely! The old lubricant is contaminated with wear products and its properties have deteriorated. Even if visually it looks normal, replace it with a new one. Volume for one CV joint - 80–100 g.

What is the difference between anthers for gasoline and diesel X-Trail T31?

Main differences:

• Size: On diesel versions (M9R) anthers are longer by 10–15 mm due to a different drive shaft design.
• Material: Boots for diesel engines are made of more heat-resistant rubber (withstands heating up to +120°C against +100°C for gasoline ones).
• Articles: For diesel engines, the original numbers with the suffix are used -4M025.

Installing a “gasoline” boot on a diesel engine will lead to its rapid cracking.

Is it possible to repair a torn boot without replacing it?

Theoretically, yes, but this is a temporary solution. Methods:

• Vulcanization: Suitable for small cracks (up to 1 cm). Use a tire repair kit (Loctite 406).
• Heat shrink tube: Place the tube over the break and heat it with a hairdryer. Lasts 1–2 months.
• Epoxy glue: Only for microcracks. Before application, clean and degrease the surface.

Important: All these methods provide a delay for 500–2,000 km. Replace the boot as soon as possible!