Re: how to ajust fan belt on 2001 nissanpatrol 3lt
This isn't a fun job and is more difficult if your removing it from the tom instead of underneath. Theres a jack bolt for each belt to loosen and tighten. The alts. is on the lower underside, the pass. side front tire side (to the left underneath if looking at the car from the front).
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2002 frontier 4 cyl: 1) take off air intake tube, 2 screws 13 mm above radiator. 2) 1st belt for power stirring has pulley, undo pulley screw and unscrew adjuster bolt enough to take belt off 3) 2nd belt for alternator and water pump has no pulley but adjusting bolt and mounting bolt on alternator pulley, loosen mounting bolt and unscrew adjusting bolt enough to take belt off, if alternator will not move go under the truck and remove plastic cover- 6 screws 13 mm heads, after that look directly under alt. Pulley and should see a screw head 9/16 in, loosen it so alternator can move, now should be easy to remove belt ( it will be a lot harder to put new one though) 4) 3rd belt for compressor has pulley so follow #2 to remove it ,have to be done under the truck. First 2 belts will have to work around fan blades to remove them so wear gloves. After replacing belts remember that not to over tighten bolt on pulleys.
require to loosen of alternator mount bolts. Slide the alternator towards the rear of the car, this will slacken off the belt. Remove alternator belt and feed over the harmonic balancer and fan.Fit new belt. Slide alternator foward untill their is around 10-15 mm deflection in the belt, and tighten alternator mount bolts again to secure belt and tension. Recheck tension after about 500kms
Your fan belt is slipping. As you turn the wheel you make a power demand on the power steering compressor. This compressor takes its power from the fan belt so as you steer the compressor shaft is harder to rotate and the belt slips as a result. The fan belt should be adjustable by loosening the alternator bolts and moving the alternator away form the engine and than re-tightening the bolts. Check that the fan belt is not worn, if there are obvious signs of wear or cracking then renewal would be the best step. Always make a sketch of the path of the belt around the respective engine pulleys before removing it.
Suggest replacing all the belts also. 1st belt, remove coolant reservoir. Loosen the pulley next to the res. then there is a tension bolt behind it. get under the car, the alternator is right there on the passenger side. possible under a small shield. Loosen all the bolts on the alternator, then there is a tentioner on the alternator. Loosen that, remove belt, then take out the rest of the bolts, along with the plug and the ground wire to the alternator. for the P/S belt, loosen the other pulley 14mm, and then the tention bolt is another 12mm.
Loosen alternator right back You will have to loosen pivot bolt underneath alternator Replace belt and tighten alternator until you can move belt about 5-6mm by pushing on it with two fingers Quite fiddly job Not much room
1. Remove battery terminals and secure them away from the battery posts using nylon wire ties.
1a. Fine some comfortable eye glasses (clear or yellow) and keep them on. There are plenty of opportunities to get debris in your eyes during this procedure.
2. Spray "PB Blaster" (loosens bolts) on two bolts that secures alternator.
3. Jack-up vehicle on side to access alternator. Use a jackstand to support.
4. Using a 10mm open-ended wrench, loosen the bolt that swings the alternator. Screwing the bolt "in" or toward the engine will allow play to increase in the alternator belt. Loosen the 12mm bolt slightly next to the 10mm bolt (approximately 1.5" toward engine).
5. Continue to loosen 10mm bolt until there is enough slack in the belt to remove the belt from the alternator pulley.
6. Remove belt. It may be possible to remove belt without removing fan faring. Maybe not. If not, you will need to remove plastic fairing. If you must remove fair, go below fan fairing and disassemble connectors that hold together pieces of fan fairing. Carefully remove.
7. Install alternator fan from above.
8. Check that alternator belt is on all tracks (from below with a flashlight), and slowly tighten.
9. Secure 10mm and 12mm bolts. Recheck tightness.
10. Reassemble battery connection and run vehicle at idle for about 5 minutes. Check belt for proper tension.
11. CAREFULLY check tension of belt. Or disassemble battery connections and re-check belt tension.
12. Reassemble fan fairing (if not already assembled), re-connect battery terminals, and have a nice day. :-)
I just gave somebody the written answer to this same question. i do not know about the visual. But if you know what the alternator looks like , you can fix it.
Disconnect and label the wiring harness connections to the alternator (Painters Masking tape works very well for labeling Automotive wiring).Label the wires with a marker so you will place them back exactly as you took them off.
Loosen the alternator pivot bolt.
Remove the bolt that attaches the alternator to the adjustment arm.
Rotate the alternator to loosen the drive belt and disengage the belt from the pulley. Be careful that any spacers that are used in mounting are kept with their original bolts. This will make correct reinstallation much easier.
While supporting the alternator remove the pivot bolt.
Remove the alternator from the vehicle.
To reinstall the alternator, reverse the removal procedure.
To adjust the belt tension, leave the pivot and adjusting arms loose. tighten the belt to about a half inch pressing with your finger.