What is a rectifier

General Boats and Motors
1

My friend has an older 1989 135 Mercury and he thinks he may have hooked the battery up backwards. He took it to a shop in Murrells inlet and was told it needed a new battery selector switch and a rectifier. $500 quote to fix it.
What is the rectifier (is it the stator or similar to a voltage regulator or alternator? what othet damage could be done?

Thanks
Rick

2

It’s similar to a “rotator splint”. It rectifys the mechanic charging you $500 to fix a switch.

3

But seriously, this should answer your question…

http://en.wikipedia.org/wiki/Rectifier

4

Good link

5
quote:
Originally posted by DueSouth

Not to be confused with ‘rectumfire’. Say NO to imported shrimp and YES to aloe TP or you will be up at 2:00am reading Hoppy’s ‘why do people…’ post!

If you ain’t hooked, you ain’t doing it right.

?Que?Huh?

Mark
Mako 262 Twin Yammaha F200s
Yeah, but do you consider a dog to be a filthy animal? I wouldn’t go so far as to call a dog filthy but they’re definitely dirty. But, a dog’s got personality. Personality goes a long way.

“Life’s tough…It’s even tougher if you’re stupid” John Wayne

6

Converts AC voltage to DC voltage (although not perfectly clean DC voltage like a battery). Alternators use rectifiers to produce DC voltage. Alternators have three sets of windings that produce AC voltage which is why they also need three rectifiers, commonly refered to as the trio. After the converting to DC voltage, the voltage regulator keeps the voltage within the acceptable range. Usually around 13.8 volts when charging.

Iain Pelto
Edgewater 185CC “Jumpin’ Bean II”

7

Good link above.
$300 is a little steep for a switch and rectifier that are easy to replace and can be bought off the shelf. If you or your friend can turn a wrench, I’d pay the shop for the diagnosis and do the repairs myself… or give them a chance to drop their price.

17’ Henry O Hornet
w/ Johnson 88spl

8

I am with PalmerScott, not a hard job, just make sure you label the wires as you remove the old regulator. Did one on an old Evinrude a few months back, and told no more than 45-minutes. New selector switch is about as easy as it gets. Make sure to use lock nuts when mounting the cables on the switch.

9

rectifier regulator for that motor is $300+ (aftermarket cdi) perko is $40
diagnose and repair $160 not a bad price

I’m now at www.teamcharlestonmarine.com

10

Go to WWW.Crowley Marine .com go to parts catolog and surf
through and find your engine it will give you a complety digram of your engine.
shoot me your phone number I will try to answer you question.
good luck.

11

Looks like Chris V is correct, as usual. The voltage regulator is going to be expensive. I am surprised as the rectifier (obviously sans regulator) for my Johnson 88 spl was substantially less expensive (<$30.00). $500 might not be bad price.

17’ Henry O Hornet
w/ Johnson 88spl

12

Thanks for all the replies.
I am somewhat mechanical and I am going to attempt to do it for him.
His money is tight and I won’t charge him, as he is like a brother to me. I did go on ebay and typed in 135 Mecury Rectifier and got listings for his year, new ones between $35-79 bucks???

Thanks again,
Rick