Power steering pump (power steering) in Nissan Almera Classic (models B10 And N16) is one of the key components on which the comfort of control depends. Over time, it wears out: a hum appears when turning the steering wheel, oil leaks, tight rotation or jerking. If you ignore these symptoms, you may face a complete system failure - and this is not only discomfort, but also the risk of an accident.
In car services, for replacing a power steering pump they ask from 6,000 to 12,000 rubles (depending on the region), but if you have the tools and patience, you can perform the procedure yourself. In this article - step by step instructions with photos, tips for choosing spare parts, a list of necessary tools and unique nuances that cannot be found in standard manuals (for example, how to avoid airing the system after installing a new pump).
Signs of a faulty power steering pump: when replacement is needed
The first signal about problems with the pump is extraneous sounds when turning the steering wheel. Most often this is a hum or whistle, which intensifies when the engine is cold or when the steering wheel is in extreme positions. But there are other symptoms:
- 🔴 Power steering fluid leak under the hood (usually near the pump or hoses). The oil has a reddish or brown tint.
- 🔴 Stiff steering wheel rotation, especially at low engine speeds. Sometimes the steering wheel “snaps” in one position.
- 🔴 Jerks or dips when turning - a sign of wear on the bearing or pump blades.
- 🔴 Foam in the power steering reservoir - indicates air leaks through worn seals.
If you notice at least one of these signs, check the fluid level in the reservoir. If it falls and smudges are visible on the pump body, the unit needs replacement. Flushing or adding oil will help temporarily, but worn parts (bearings, seals, blades) cannot be restored.
⚠️ Attention: Do not confuse the hum of the power steering pump with the noise of the alternator belt! To check, remove the belt from the pump pulley and rotate it by hand. If there is play or jamming, the problem is in the pump.
- Less than a month
- 1-3 months
- More than 6 months
- Only today
Choosing a power steering pump for Nissan Almera Classic: original vs analogues
Original power steering pump for Almera Classic has an article number 49100-4M500 (for engines 1.5/1.6 l) or 49100-4M505 (for 1.8 l). Cost - from 12,000 to 18,000 rubles. But there are proven analogues that will cost less:
| Brand | Article | Price, ₽ | Features |
|---|---|---|---|
| Nissan (original) | 49100-4M500 |
12 000–18 000 | 1 year warranty, fully compatible |
| ZF (Germany) | 7150 029 300 |
8 500–11 000 | Long life, suitable for harsh conditions |
| Mando (Korea) | MPH-001 |
7 000–9 500 | Good price/quality ratio |
| Febi (Germany) | 22610 |
6 500–8 000 | Budget option, but less resource |
When choosing an analogue, pay attention to fitting thread type And pulley size. On Almera Classic with air conditioning, a pump with a different bracket mount may be required. Also check the package: some kits do not have a pulley, you will have to replace it from the old pump.
Before purchasing, compare the weight of the old and new pump. Counterfeit goods are often 200–300 grams lighter due to the thin-walled case.
Tools and consumables: what you need for replacement
To work, you will need a standard set of tools, but there are also specific devices. Here's the full list:
- 🔧 Keys and heads: at 10, 12, 14, 17 mm (preferably with a ratchet).
- 🔧 Special puller for the pump pulley (or two mounting crowbars).
- 🔧 5 mm hexagon to adjust belt tension.
- 🛢️ Power steering fluid - at least 1 liter (recommended Nissan PSF or Mobil ATF 220).
- 🧴 Sealant for threaded connections (e.g. Loctite 577).
- 🧲 Magnetic tray - so as not to lose the mounting bolts.
Also prepare container for draining old fluid (at least 0.5 l), rags and medical syringe with a tube for pumping oil out of the tank. If you plan to flush the system, you will need another 1–2 liters of fluid.
☑️ Preparing to replace the power steering pump
Step-by-step instructions: how to remove the old power steering pump
Before starting work disconnect the negative terminal of the battery and let the engine cool. Next, follow the algorithm:
- Drain the system. Disconnect the return hose from the power steering reservoir and direct it into a container. Turn the steering wheel left and right until it stops 5-6 times to expel the oil.
- Release the belt tension. Using a 12 mm wrench, unscrew the tension roller bolt, then slide the generator towards the cylinder block. Remove the belt.
- Remove the pump pulley. Secure it with a puller or mounting brackets (as in the photo below) and unscrew the fastening bolt counterclockwise.
- Disconnect the hoses. First remove the supply hose (upper), then unscrew the injection nut (lower). Be careful - liquid may leak!
- Remove the pump. Unscrew the 3 bracket mounting bolts (14 mm wrench) and carefully remove the assembly.
⚠️ Attention: Do not mix up the hoses when disconnecting! The supply (from the reservoir) is thinner than the discharge (to the steering rack). If you connect them incorrectly, the pump will run dry and quickly fail.
What to do if the pulley bolt does not come off?
Use a penetrating lubricant (such as WD-40) and let it sit for 10-15 minutes. If this does not help, try heating the pulley with a hair dryer - the metal will expand and the bolt will move out of place.
Installing a new pump and priming the system
Before installing a new pump check for grease in the bearing (it should rotate smoothly, without play). Also inspect the hoses for cracks and replace them if necessary.
Carry out installation in reverse order:
- Install the pump on the bracket and tighten the bolts to a torque of 25–30 Nm.
- Connect the hoses after lubricating the threads with sealant. Tighten the discharge (lower hose) with a force of 30–35 Nm.
- Put the pulley on and secure with a bolt (tightening torque: 45–50 Nm).
- Tension the alternator belt. The deflection between the pulleys should be 8–10 mm when pressed with a force of 10 kg.
Now fill the system with liquid:
- Fill the reservoir with oil up to the mark
MAX. - Turn the steering wheel left and right 10–15 times (engine off!). Add liquid as it goes down.
- Start the engine and repeat the procedure. Monitor the level - it should stabilize.
- Warm up the engine to operating temperature and check the level again.
After replacing the pump, be sure to bleed the power steering system to remove air. Otherwise, the steering wheel will “twitch” when turning.
Flushing the power steering system: is it necessary and how to do it
If there was foam or visible metal particles in the old fluid, the power steering system be sure to rinse. To do this:
- After draining the old oil, pour it into the reservoir special cleaner (For example, Liqui Moly ATF-Reiniger) or fresh power steering fluid.
- Disconnect the return hose from the tank and direct it into a container.
- Start the engine and turn the steering wheel left and right for 2-3 minutes. Make sure that the tank is not empty.
- Drain the flushing fluid and repeat the procedure with clean oil.
Flushing removes deposits in the steering rack and hoses, extending the life of the new pump. But if the system is heavily contaminated (for example, after driving on a “dead” pump), it may be necessary replacing hoses and tank filter.
Common mistakes when replacing a power steering pump and how to avoid them
Even experienced craftsmen sometimes make mistakes that lead to rapid pump failure. Here are the most common:
- 🚫 Underfilling or overfilling of liquid. The optimal level is between
MINAndMAX. When the oil is overfilled, it foams; when it is underfilled, the pump runs dry. - 🚫 Using the wrong liquid. For example, DEXRON III instead of PSF. This leads to destruction of the seals.
- 🚫 Incorrect hose tightening. Weak - leaking, strong - broken thread. Use a torque wrench!
- 🚫 Airing the system. If you do not bleed the power steering after replacement, the steering wheel will “spring”.
Another typical problem is pulley misalignment during installation. If it is not level, the belt will wear out 2-3 times faster. Check the alignment of the pump, generator and crankshaft pulleys using a straight edge.
FAQ: Answers to frequently asked questions
Is it possible to drive with a faulty power steering pump?
In the short term, yes, but the steering will become very stiff, especially at low speeds. Driving for a long time “dry” will lead to wear on the steering rack. There is also a risk of the pump jamming and the generator belt breaking.
How much power steering fluid is needed for a complete replacement?
In the system Almera Classic about 0.8–1 liter of oil. But rinsing will require 1.5–2 liters. Always take extra liquid.
What is the service life of the new power steering pump?
The original pump lasts 150-200 thousand km, analogues - 100-150 thousand km. The service life depends on the quality of the fluid and operating conditions (off-road driving reduces the service life by 30–40%).
Is it possible to replace only the bearing in the pump and not the entire assembly?
Theoretically yes, but in practice it is unprofitable. The cost of the bearing (~1,500 ₽) + disassembly work is comparable to the price of a new analogue pump. In addition, worn blades will still remain.
What to do if after replacing the steering wheel begins to “twitch”?
This is a sign airing the system. You need to bleed the power steering: start the engine, turn the steering wheel several times until it stops and add fluid. Repeat 2-3 times.