Nissan Tiida DIY alternator repair

In detail: do-it-yourself nissan tiida generator repair from a real master for the site my.housecope.com.

Photo unfortunately did not. I'll take a picture as I collect it.

The procedure is actually not that difficult, but requires patience.

Remove the expansion tank (pull up), disconnect the tube. Disconnect the alternator wiring harness from the mounting to the body. Remove the expansion tank.

Now you need to remove the alternator / air conditioner belt.
To do this, loosen the nut on the tension roller, then turn the adjusting bolt counterclockwise to loosen the belt (the bolt is located between the generator and the compressor. You need a key for 8). Having completely unscrewed the tensioner nut, you can remove it and change the bearing there if necessary.

Next, we throw off the belt (here you can check the condition of the compressor bearing by turning the pulley by hand).

Disconnect, if not already disconnected, the negative battery terminal.

We disconnect the excitation winding terminal, unscrew the power plus from the generator, the black wire - the ground (a small short key is desirable here - the bolt is inconveniently located).

We remove the wiring harness from the mount, remove it so as not to interfere.

The generator is mounted on three bolts, two in front and one behind at the bottom.
The first two are unscrewed without problems, to unscrew the bottom one - you need to unscrew the plastic protection from below and work from under the car.

All now, having found the position in which it will pass, we pull it out towards the washer reservoir.

Disassembly
I didn’t understand how to disassemble it correctly, I’ll write how I disassembled it myself.

We unscrew the four studs on the sides, unscrew all the screws on the back of the generator and the nut on the plus. Gently tighten the back cover with a light hammer - it will first jump off the stator winding, then, with a little more effort, the rear bearing is removed from the housing and remains on the rotor. (do not lose the plastic washer on the positive terminal.)

Video (click to play).

Now you can pick off the stator from the front cover and carefully remove it from engagement with the brushes. To remove the diode bridge, we solder it with a powerful soldering iron from the stator. It's only held on by wires.

Now the most difficult thing is to unscrew the pulley. Here you need a good vise and a 24 head and a pipe for extra effort.

We tighten the pulley through two pieces of wood into a vise (trimmings from old ski poles came up to me). We pull the vise with the pipe. I do not know how to describe the effort, but it is very large. Probably better by trial and error - if you don’t reach it, it will simply turn. The pulley is very strong and did not wrinkle at all. We are trying to unscrew the nut (also with a pipe). It didn’t work out - we tighten it up and try again. It is advisable to periodically spray VDshkoy on the pulley nut, knock with a hammer and dance with a tambourine.

We put the generator with the ears of the front cover on two bricks and knock the rotor down through the piece of wood (we catch it so as not to break it).

Now you can change the front bearing (it is behind the cover and can be easily removed from the housing if you do not warp).

I haven’t been able to knock the rear bearing off the shaft yet :(. Here you probably have to get a puller.

I don’t know how to assemble yet, but I think in reverse order))).

Yes, and do not repeat my mistakes - be careful with the diode bridge - when I hammered the studs into place into it, I broke one diode :(.

Yes, bearing numbers:
Front 6303LV NTN (part number 23120-22J20)
Rear SC00A06LHI NTN (or SC00A11LHI, Size 10x27x11)
Tensioner 6301DULX JAPAN NSK 172

Generator number 23100 0M005, LR170-746K Hitachi

Image - DIY nissan tiida generator repair

In order to tighten the alternator belt on a Nissan Note, you need to: raise the car on a jack, remove the wheel, unscrew and remove the fender liner (it is held on by 3 screws from the bottom and 3 clips).Now we find the tension roller and loosen the fastening nut. There is a bolt behind the tensioner roller (turnkey 13), and you need to tighten it to tension the belt.

There are 2 ways to get to the tensioner pulley bolt. It is necessary to remove the grille, which is held on by clips on top, 2 latches along the edges of the headlights, and a lot of latches along the bottom of the grille (they snap off by pressing down on the middle and pulling the grille towards you). Next, you still need to remove 2 pistons from the plastic frame at the headlight, now you can get to the bolt.

The second way is easier, but not more convenient. From the side of the removed fender liner, we put our hand behind the roller, grope and put the key on the bolt, and slowly turn it.

We check the adjustment by pressing a finger on the belt from below, the deflection of the old belt is 4.8-5.3 mm, the new one is 4.2-4.5 mm. If you can’t determine by eye, you can use the steelyard. After tensioning the belt, tighten the tensioner roller nut and assemble everything in the reverse order.

Do-it-yourself video guide for tightening the alternator belt on a Nissan Note. do it yourself: