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Alternators
An alternator is an old term for electric generator that converts mechanical energy to electrical energy producing alternating current. Alternators are mainly used for recharging batteries and to power electrical loads of vehicles.
4,629 Questions
How many diodes will a high output alternator usually contain?
An alternator usually has 6 diodes in a full-wave rectifier for the main current output connected directly to the battery, and also another 3 for the secondary output to the voltage regulator, which feeds DC through slip-rings to the field coil in the rotor.
Ford areostar 1997 alternator replacement?
Do yourself a favor. When buying a New Alternator have them check it before taking it home? I had a bad incident that I ended up with, 3 bad alternators in one day, 3 different stores. Last store check it before I took it home and everything was good. I ended up changing it 3 times. Make sure they also change the pulley. Alternator Removal & Installation 1. Disconnect the negative battery cable. 2. Rotate the drive belt tensioner away from the drive belt and remove the drive belt from the alternator pulley. 3. Detach the electrical harness connectors at the alternator assembly. 4. Disconnect the positive battery cable and remove the nut and washer. 5. Remove 2 front alternator bolts. 6. Remove the rear alternator support bracket retaining bolts and the support bracket. 7. Remove the alternator from the vehicle. To install: 8. Place the alternator in position and loosely install 2 front alternator retaining bolts. 9. Install the alternator bracket and 3 alternator bracket bolts. Tighten to 84 inch lbs. (10 Nm) 10. Tighten 2 front alternator retaining bolts to 19 ft. lbs. (26 Nm). 11. Connect 2 electrical hardness connectors to the alternator assembly. 12. Connect the positive battery cable and install the nut and washer. Tighten the nut to 72 inch lbs. (8 Nm). 13. Rotate the drive belt tensioner away from the drive belt and install the drive belt on the alternator pulley. 14. Connect the negative battery cable. 15. Start the engine and check for proper charging system operation.
Is there a simple way to test the alternator on a yardman riding lawnmower with Kohler 16 HPengine?
I do it with a handheld VOM [Volt-Ohm Meter]:
- Plug the red test lead into the Positive [+] jack in the meter.
- Plug the black test lead into the Negative [--] jack in the meter.
- Set the VOM mode switch [usually a "rotary" type of switch] to the 50 Volt DC [Direct Current] mode/scale.
- Place the meter next to the battery so you can read it while holding the test lead probe points to the battery Positive and Negative terminals.
- Touch and hold the red Positive probe to the Positive terminal on the battery.
- While holding the red lead in contact with the Positive terminal, touch the black Negative test probe to the Negative terminal of the battery.
- While holding the probes in good, firm contact with the battery terminals, observe the meter readout or display to determine the voltage in the battery.
- Either remember, or record that voltage reading.
- Then, with the blade disengaged and the transmission in neutral , AND the parking brake set, start the engine, and set the throttle to wide open.
- Now repeat the voltage test of the battery again.
If the magneto/alternator is working, the voltage indicated on the VOM should be greater than the battery voltage without the engine running.
If the magneto/alternator is working properly, the voltage indicated should be at least 12 1/2 volts, and not exceed 16 volts.
The Fuse Box can be located on your left hand side underneath the steering column...that useually requires a large fuse 20 or 30 plus I can answer the alternator question - yes, it causes alot of wacky wiring symptoms! The speedometer might stop, the indicator lights may blink fast, the "D" light may blink...etc.. Sorry can't answer about the fuse - but maybe in the fuse box!
How do you replace the alternator on a 1991 Oldsmobile Cutlass 3.4L?
Changing the alternator calls for 4 or 5 hours but you have to access it by removing your right front tire, removing the brake assy, the CV axle and then drop your lower control arm out of the way. It's a big job for a yard repair so good luck!
How do you change an Alternator 1993 Ford Ranger?
# Disconnect negative battery cable # Pull straight out and disconnect the push on type connectors for both the stator and field terminals # Loosen the alternator adjustment and pivot bolts pivot the alternator up to release tension and detach the drivebelt # Remove the ajustment and pivot bolts and remove the alternator from the engine
How do you change the alternator belt on a 1994 Honda Civic ex?
get a Chilton book for your model. get a Chilton book for your model.
I don't know, but I be you can find the answer here:
http://bbs.off-road.com/ubbthreads/ubbthreads.php
When do you replace an alternator?
That really depends on what brand and model of alternator, If you have a good battery and electrical system your alternator should go until its ball bearings or brushes wear out. newer Ford alternators last about 130-180,oookm, GM products CS130D (96-up) delco alternators will go about 200-240,ooo km and Chrysler (nippondenso) about the same or a bit better then the GM Delco. The GM and Chry will go till they wear out bearings or brushes, while the Fords usually by this time have worn thru the copper Sliprings on the rotor inside requiring a new rotor or replace the alternator completely
Name the types of alternators based on their rotor construction?
1) Rotating armature alternator, rotates in stationary magnetic field.
2) Rotating field alternator, the magnetic field is rotating.
How do you remove the alternator from 1994 Cadillac eldorado?
To remove disconnect the negative battery cable, remove the cover from the headlamps and radiator shroud.
Disconnect the left engine torque strut from the radiator support then disconnect the upper trans oil cooler line from the transmission cooler.Next remove the right and left cooling fan. After that is done remove the serpentine belt from the alternator. Next remove the bolt from the front top of the alt. and the bolt from the locovered in this guider front of the alt. And detach the harness connector and putput cable from the alt.
Just so you know the bolt nearest the exhaust manifold can't be removed from the bracket but can be backed out to allow it to be taken out.
You'll have to remove the a/c splash shield from the cradle and the access panel from the bottom side of the radiator and disconnect the engine harness from its cradle. You can move the alt away from the engine and pull it out from the bottom side of the engine
if you need help putting it back in then post and if i see it I'll help
What type of device produces alternating current?
A "generator" usually produces DC current. An "alternator" usually produces AC current. Older cars up to the 1960's used generators.
Newer cars use alternators (simpler design) with diode rectifiers to convert the AC to DC. Batteries are DC.
Some electronic circuitry (inverters) can change DC to AC.
Where is the O2 sensor located on a 1997 Nissan Sentra?
o2 sensors are in the exhaust
Usually in front of the catalytic converter near or in the exhaust manifold.
How do you tighten an alternator belt on a 1997 eagle talon?
If it has a serpentine belt should be done by tensioner unless it is defective
How do you change the alternator on a 2001 Dodge Grand Caravan?
Hi firts remove the serpentine bealt. the alternator have 3 screws .
remove the 2 conector ground and voltaje.
1 upper remove this with 15mm .
2 screws lower. this is very easy I removed this yesterday.
How do you replace alternator belt on '91 Honda Civic?
The answer for this question is very similar to the question for replacing the alternator. It can also be used to understand how to replace the power steering belt and the a/c compressor belt (as their removal is necessary for replacing the inmost belt- the alternator belt). This answer assumes that you understand basic terminology and have an appropriate selection of tools (metric sockets and combination wrenches, screwdrivers, lug wrench, jack and stand, etc) and replacement parts (i.e. the new belt). Consider having a replacement power steering belt and a/c compressor belt on hand if the old ones need replacing when you inspect them- it's easy to do at this point and hard later. 1. Using a frame mount jack point and jackstand (for safety), remove the driver's side wheel. 2. Remove the plastic fairing at the front end of the wheel well by unscrewing the plastic screws *Note, for the next steps, you need to understand that the devices that run off belts from the crankshaft pulley use a common method for mounting- the whole device is mounted at 2 points- a pivot point along the back that allows the whole device to arc up and down- to loosen or tighten the belt- and a clamp nut on a curving slide point. Think like an old style circle drawing compass- the hinge at the top is the main mount point and the curving slide point is a "clamp" to keep the arc the same (and keep the belt tight). 3. Find the pivot nut and "adjustment slide clamping nut" for the top front device (I think it's the power steering booster). The pivot nut is on the outboard side of the device and the adjustment slide bolt is on the inboard side just below it. I think they are both 12mm. Loosen them to "finger loose" but don't remove them. The device should tilt down and the belt should slip off easily. 4. Find the pivot nut and slide clamp nut for the alternator and loosen them to finger tight. I think they're both 12mm too. 5. Crawl under the car and loosen the pivot nut for the adjustable idler that holds the power steering belt tight. It's up in the middle in between the crankshaft pulley and the compressor. The compressor is not movable, but the idler is. 6. This is important! Loosen the clamp nut (14mm) for the idler- it is the nut on the idler pulley. It's difficult to loosen without a long box end wrench, but it can be done with a short wrench and a breaker bar. It's too close to the side to fit a socket wrench in there. Then, climb out from under the car. 7. Using 10mm socket and long extension, turn the idler tension screw (you'll see its head just aft of the power steering booster) to loosen the a/c compresser belt. I'm pretty sure you turn it counterclockwise to loosen, but check to see if the belt is getting looser, and if not, go the other way. Leave it there on the nut if you can, you'll need it to replace the belt. 8. Crawl under the car and slip off the A/C compressor belt and the alternator belt. Crawl out and inspect all belts carefully for unusual wear or cracks. Replace a suspicious belt if in doubt- they're cheap and now's the time to do it. 9. Loop the new alternator belt over the alternator pulley and the power steering belt over its pulley. 10. Grab the A/C compressor belt and go back under the car. Position the alternator belt FIRST- important! It rides at the inmost point of the crankshaft pulley. Make sure it's aligned well or your belt will get chewed up. 11. Position the a/c compressor belt- loop it over the idler, then the compressor pulley, last over the crankshaft pulley. 12. Slip the power steering booster belt over the crankshaft pulley LAST. 13. Get out from under the car. At the back of the compartment, tension the alternator belt using a prybar or heavy screwdriver to pull the alternator away from the block. It doesn't take too much force. Use a good heavy piece of the alternator and block for this- if you guess wrong and break your alternator it's back to the store. Tighten the clamp nut (12mm) moderately. Check the tension by pressing moderately on the belt- it should have about 1/2" of "give" at the center of the span. Too tight and it will wear prematurely, too loose and it will squeal. Check an appropriate shop manual for exact specs. Once you have the belt tension right, tighten the clamp nut 1st, then the pivot nut. Check the position of the belt on the pulleys carefully to make sure the alignment is good after tightening. 14. Do the same with the power steering booster belt. 15. Use the 10mm socket + extension you left in place and turn clockwise to tighten the a/c compressor belt by moving the idler. Once tension is set, tighten the clamp bolt (14mm) on the idler pulley. Remove your 10mm socket and extension. 16. Make one last inspection of the belts and pulleys. Remove any tools in the engine compartment. 17. If your jackstand is pretty sturdy, you can crank over the engine at this point to see how the belts run. It won't hurt the engine to run with no driver's side wheel. If your belts look like they're running smoothly and not making any odd noises, you're in business! Turn off the engine when you're done making the check. 18. Replace the plastic fairing in the wheel well. 19. Replace the wheel and tighten the lugnuts "mostly tight". 20. Remove your jackstand and any other tools under the car. Lower the car and tighten the lugnuts all the rest of the way. 21. Close the hood and pat yourself on the back. You've just done a $100 repair!
If the car has a bad battery the battery will not charge just becaus you put a new alternator in try raplacing the old battery.
triple diodes in alternator are bad
How do you remove alternator from suszki aerio 2004?
The alternator on a 2004 Suzuki Aerio can be removed by first loosening the retaining bolts and taking off the drive belt. The alternator is then fully unbolted and pulled from the engine.
Where is the alternator located on a 1998 Mercury Mystique?
At the front of the engine will be a few components that have pulleys with a belts around them. Only one component will NOT have hoses going to it, but only wires. This is it.
On my 98 mystique, it was located behind the motor on the passenger side. Just be careful when replacing it though, and probably change the alternator plug as well. My new alternator blew out the old plug. Had to have the car towed twice in 2 days!
How do you replace the alternator on a Ford Explorer?
* 1: Find the tensioner pulley. * 2: Use 1/2" drive socket to loosen the belt * 3: Disconnect the battery cables * 4: Disconnect the electrical connector * 5: Remove the three alternator bolts * 6: Reverse the process
Does the alternator make a noise when charging the battery?
An alternator has fast moving parts surrounded by air, so it will make a noise in operation, in much the same way a desk fan makes a noise. (The fan blades spinning in air.)
Under heavy load (battery fully flat) this noise often becomes very slightly louder, due to increased tension in the drive belt causing increased loading on the bearings and the belt, but it would not normally be enough to notice unless tryingto notice it.
If the noise is very noticeable it is probably because one of the items the belt runs on has a bearing in the early stages of failure.
How do you replace the alternator on a 1988 Honda Accord LX?
Take the motor mounts off and take it out of the wheel well of ht driver side
AnswerI did not remove mine. Instead, I replaced the brushes with the alternator still in place. It was a lot cheaper and easier. AnswerTake the motor mounts off lift it up a few inches and take it out the wheel well of the driver side AnswerThe dealership also told me that they drop the driveshaft to do this. I elected to pay the benjamins and have the dealer do the work--$250 for the rebuilt alternator (OEM), and about $140 for labor, plus shop materials and usual dealership added charges that I hate paying but prefer the warranty if I'm going to pay anybody to work on my car. Grand total, $402.00. AnswerHere are the full directions!!! It's not that hard.Well, this is what I did: Disconnect the Battery, Loosen the water pump pulley bolts, Loosen the bolts that adjust the Alternator belt tension, Remove the belt, Remove the top alternator bracket, Remove the wires from the alternator, Jack the car up and support with Jack Stands for safety, Turn the wheels all the way to the left, Under the car, Remove the lower bolt on the alternator, Move the alternator towards the passenger side enough so you can remove the lower Alternator bracket, Then I removed the lower motor mount (2 nuts) on the crossmember, Then I removed (from above) the 1 nut on the front motor mount, Then I totally removed the driver's side motor mount (3 bolts), Next use a bottle jack with a piece of wood on top to push the motor up (I placed the jack under the oil pan), Get someone to help you, Have them watch your power steering lines while you jack the motor up about 3-4 inches, Then go under the car by the drivers side wheel and have your partner use a pry bar to move the motor forward in the engine bay about 1/2 inch. The Alternator should come right out. This may sound like a pain, but it's not too hard, besides, it saves you about $300!!! The hardest part is at the beginning loosening the Alternator tension, small hands work best! Good luck, I hope I helped!
My Answer1. Disconnect battery2. Remove Air Cleaner (4 clips and slide up and out)
3. Remove Air Cleaner Box (2 10mm bolts and low clip)
4. Remove Alternator tension bolt, move belt out of the way
5. Remove Alternator pivot bolt, lower part of Alternator
,6. Disconnect wire clip from back of Alternator
7. Slide Alternator back towards firewall and were the Air Box was. Ta Da
8. Disconnect wires, left Alternator straight up and out.
Install in reverse order (8-1)
This worked for me. Remember to safety first.
the easy answerafter searching the internet i found no easy way so i found my own way i have a 1988 Honda accord lx-ifuel injection automatic and just replaced my alternator, standing on the drivers side, faceing the passangers side looking down towards the bottom of the motor you see the alternator, un bolting it was easy, but then we couldn't get it out of the tight location it was in, so i simply still standing at the same spot took the air filter, air filter houseing cover, out then took the two bolts out of the top of the air filter houseing leaveing two hoses top and bottom disconnecting right at the air filter houseing then pulling it right up out of your way, allowing the alternator to come right out, to make it even easier take care of the air filter first.How do you replace the alternator on a 1995 Chevy Cavalier?
Disconnect the battery terminals
Make note of the serpentine belt routing so that you can put it all back.
Using a 1/2 inch breaker bar in the hole of the tensioner arm, back off the pressure enough to get the belt off the alternator.
Disconnect the electrical plugs and all other wires making note of where things go.
Remove the bolts holding the alternator in place.
Put the replacment alternator back in place going in reverse order of the above.
How do you change the alternator on a 1998 Chevy Blazer?
1st remove negative battery cable from battery. then remove electrical connectors from alternator with ratchet, rotate tentioner pully to remove belt. (near top/center of belt) remove support bracket and mounting bolts and it's off.
