Introduction: Why is it important to know the alternator belt diagram on Qashqai
Alternator belt Nissan Qashqai - this is an element that owners often underestimate until it breaks at the most inopportune moment. Not only the charging of the battery, but also the operation of the air conditioner, power steering (if equipped) and even the pump in some modifications depends on its condition. In practice, 80% of breakdowns are due to incorrect installation or belt wear, and not with the generator itself.
Drive belt diagrams for Qashqai J10 (2007–2013) and J11 (2014–2021) differ depending on the engine: HR16DE (1.6 l), MR20DD (2.0 l), K9K (1.5 dCi) or R9M (1.6 dCi). Diesel versions, for example, have a separate belt for the generator and air conditioning, while gasoline versions often have a single service belt. In this article we will analyze all possible schemes, spare parts articles and replacement nuances that are not written in the official manuals.
Alternator belt diagrams for Nissan Qashqai by engine
Let's start with the most popular option - gasoline HR16DE (1.6 l). Here it is used single serpentine belt, which drives the generator, air conditioning compressor and power steering pump (if equipped). The diagram looks like this:
- 🔧 Crankshaft pulley → Tension roller → Generator → Air conditioning compressor → Power steering pump (if available).
- 📏 Belt length: 6PK1720 (for versions without power steering - 6PK1685).
- 🔄 Tension: regulated by an automatic tensioner (roller replacement is recommended every 100–120 thousand km).
For MR20DD (2.0 l) circuit is more complicated due to additional equipment. Here the belt passes through additional deflection roller, and its length increases to 6PK1890. Important: on Qashqai with this engine after 2017, a belt with a different profile was installed (6PK instead of 5PK), which is critical when replacing!
Diesel versions (K9K And R9M) have separate belts for the generator and air conditioner. For example, on K9K 1.5 dCi The alternator belt diagram only includes the crankshaft pulley, alternator and tension roller (length 5PK825). But the air conditioning belt comes separately here - 5PK1125.
- HR16DE (1.6 petrol)
- MR20DD (2.0 petrol)
- K9K (1.5 diesel)
- R9M (1.6 diesel)
- Other
Articles and analogues of belts for Qashqai: what to choose
Original belts from Nissan have article numbers depending on the model:
| Engine | Original article | Length/type | Popular analogues |
|---|---|---|---|
HR16DE (1.6) |
11720-4M50A |
6PK1720 | Gates 6PK1720, Contitech 6PK1720, Dayco 6PK1720 |
MR20DD (2.0) |
11720-4M51A |
6PK1890 | Gates 6PK1890, Bosch 1 987 949 736 |
K9K (1.5 dCi) |
11720-ED00A (generator) |
5PK825 | Contitech 5PK825, Dayco 5PK825 |
When choosing analogues, pay attention to belt profile (5PK or 6PK) and length. For example, a belt Gates 6PK1720 suitable for HR16DE, but if you take 5PK1720 (wrong profile), it will last a maximum of 10 thousand km. It's also worth checking production batch - y Contitech there were cases of defects in 2020–2021 (belts cracked after 20 thousand km).
⚠️ Attention: On Qashqai with MR20DD after 2017, belts with reinforced cord were installed. If you install the old version (before 2017), it will slip under high loads (for example, when the air conditioner is on and driving uphill).
Step-by-step replacement of the alternator belt on a Nissan Qashqai
To replace the belt with HR16DE you will need:
- 🔧 14 mm wrench (for tension roller).
- 🔧 10 mm head (to protect the engine).
- 🔧 Jack and stops (if you need access from below).
- 📸 Flashlight (required - lighting in the engine compartment is weak).
Replacement algorithm:
- Remove the engine protection (4 x 10mm bolts).
- Loosen the tension roller by turning it counterclockwise with a 14 mm wrench. Do not unscrew the bolt completely!
- Remove the old belt, noting the direction of travel (on most Qashqais it is clockwise).
- Install the new belt, starting at the crankshaft pulley. Use the diagram from the section above.
- Tension the belt by turning the pulley clockwise. Optimal tension: deflection 5–7 mm when pressing with a finger in the middle between the pulleys.
☑️ Preparing to replace the belt
On diesel K9K And R9M the process is more difficult due to the cramped engine compartment. Here it is often necessary to remove generator bracket (2 x 13mm bolts) and use an extension for the key. Critical error: not checking the condition of the deflection roller. On diesel engines it wears out 2 times faster than the belt!
Before installing a new belt, clean the pulleys from dirt and oil with alcohol. Even a small amount of oil reduces belt life by 30–40%.
Typical mistakes when replacing an alternator belt
Mistake #1: Incorrect tension. A loose belt will whistle under load (air conditioning, headlights on), and an overtightened belt will damage the bearings of the generator and rollers. On Qashqai The optimal tension is checked as follows:
- 📏 Press the belt in the middle between the crankshaft and generator pulleys.
- 📊 The deflection should be 5–7 mm with a force of ~10 kg (can be checked with a household dynamometer).
Mistake #2: Ignoring roller status. Tension and idler rollers on Qashqai runs ~100 thousand km, but their bearings begin to play after 60–80 thousand km. Signs of wear:
- 🔊 Noise (hum) when the engine is idling.
- 🌀 Roller play when checking by hand (remove the belt and swing the roller).
⚠️ Attention: On diesel Qashqai with R9M (1.6 dCi) the air conditioner belt deflector often jams. If, after replacing the belt, a squealing noise appears during a cold start, check this particular video!
Mistake #3: Installing the belt "by eye". Even experienced craftsmen sometimes confuse the direction of the belt (especially on MR20DD, where is the diagram with a deflection roller). Consequences: the belt rubs against the edges of the pulleys and breaks after 1–2 thousand km. Always refer to the diagram or photograph the old belt before removing it.
What happens if the belt breaks on the way?
If the alternator belt breaks, battery charging will be turned off (the car will travel another 20–50 km on the energy reserve). Then the power steering (if any) will fail, and on diesel versions the pump may stop working, which will lead to engine overheating. On petrol Qashqai with HR16DE the pump is driven by a timing belt, so the risk of overheating is lower.
When to change the alternator belt: signs of wear
The manufacturer recommends replacement every 60–90 thousand km, but in practice the period depends on operating conditions. Here are the key signs that the belt needs to be replaced urgently:
- 🔊 Whistling when starting the engine or when turning on the air conditioning/headlights (especially in humid weather).
- 👀 Cracks on the inside of the belt (visible upon visual inspection).
- 🧹 Scuffs or “shaggy” edges (indicates improper tension or wear on the pulleys).
- 💨 The smell of burning rubber from under the hood (the belt slips and overheats).
On Qashqai with mileage over 150 thousand km is also worth checking pulleys. Worn pulleys (with grooves or chips) will accelerate the wear of the new belt. For example, on MR20DD The air conditioning compressor pulley often wears out - replacing it costs 3-5 thousand rubles.
For diesel versions (K9K, R9M) is critical service life: belts move less here due to high loads. Also a sign of wear unstable generator operation (the battery light on the dashboard blinks).
On a Qashqai with a mileage of more than 100 thousand km, it is better to combine replacing the alternator belt with checking the timing belt (especially on gasoline engines). On diesel engines, the timing belt is changed every 120 thousand km, but its condition can affect the service life of the alternator belt.
Replacement cost: do it yourself or go to a service center?
The cost of service work depends on the region and engine type:
| Engine | Belt cost (rub.) | Cost of work (rub.) | Total (RUB) |
|---|---|---|---|
HR16DE (1.6) |
1 200–2 500 | 1 500–2 500 | 2 700–5 000 |
MR20DD (2.0) |
1 500–3 000 | 2 000–3 500 | 3 500–6 500 |
K9K/R9M (diesel) |
1 800–3 500 | 2 500–4 000 | 4 300–7 500 |
Replacing it yourself is cheaper, but requires time and tools. For example, for HR16DE you will need:
- 🛠️ 10, 14 mm keys.
- 🔦 Flashlight with a magnet (so as not to lose the bolts).
- 📱 Phone for filming the process (useful if something goes wrong).
It is most difficult to change the belt on diesel versions - it often requires removing the generator bracket and access from below the car. If you do not have a pit or a lift, it is better to contact a service center. The average cost of replacing an alternator belt is Qashqai in Moscow – 2,500–3,500 rubles, in the regions – 1,500–2,500 rubles.
FAQ: Frequently asked questions about the alternator belt on Nissan Qashqai
Is it possible to drive with a whistling alternator belt?
Short term - yes, but this is a signal of a problem. A whistle indicates belt slippage, which leads to accelerated wear and undercharging of the battery. On diesel Qashqai Ignoring the whistle can lead to belt breakage and power steering/air conditioning failure. We recommend checking the tension or condition of the belt within a week.
Which belt is better - original or analogue?
Original belts Nissan (For example, 11720-4M50A) last longer (80–100 thousand km), but cost 1.5–2 times more than analogs. High-quality analogues (Gates, Contitech, Dayco) last 60–80 thousand km when installed correctly. To save money, you can take analogues, but be sure to check production batch (for example, at Contitech there were problems with the 2020 belts).
Do I need to change the rollers when replacing the belt?
Yes, especially if the car's mileage exceeds 100 thousand km. Tension roller on Qashqai wears out at about the same rate as the belt. Over time, its bearing becomes loose, which leads to uneven tension and accelerated wear of the new belt. The cost of the roller is 800–1,500 rubles, which is not commensurate with the risk of having to replace the belt again after 10 thousand km.
What to do if the belt breaks on the road?
1. Stop and turn off the engine. 2. Check whether the timing belt is torn (on gasoline Qashqai it is separate, on diesel engines it is connected to the generator). 3. If the timing belt is intact, you can drive to the service center on the battery (turn off all consumers: lights, air conditioning, music). 4. On diesel versions you can't drive without a belt - this will lead to overheating due to the pump stopping.
Why does the new belt whistle after replacement?
The reasons may be as follows:
- 🔧 Weak tension (check according to the instructions above).
- 💧 Oil or coolant gets on the belt (clean the pulleys with alcohol).
- 🔄 Incorrect installation direction (turn the belt over according to the diagram).
- 🛠️ Pulley wear (replace damaged pulleys).
If the whistle does not disappear after checking, the belt may be defective (especially true for cheap analogues).