Quick Answer: What Is The Use Of Rectifier In Motorcycle?

What happens when a rectifier goes bad?

First, the diode can burnout and cause the battery to drain. You won’t have any trouble diagnosing the faulty regulator rectifier if the battery is the cause. You’ll note signs right away like poor starts, fluctuating meter readings, and dimmed headlights. around 13 volts, the bike will start to drain the battery.

Will a motorcycle start with a bad Rectifier?

The rectifier is part of the charging system. If you put a freshly charged battery in your motorcycle, and you have a bad rectifier, it won’t stop your motorcycle from starting, but your battery wouldn’t stay charged. The regulator/ rectifier on your motorcycle performs two functions.

Can a bad stator damage a rectifier?

Registered. To answer your question yes it can, there are three diodes(phases) within the rectifier that allow current to go in one direction through the device (ie. Stator > Rectifier > Battery). But will not allow currrent to flow in the opposite direction.

What causes a rectifier to get hot?

It’s normal for an OEM shunt-type regulator/ rectifier (RR) to get quite hot — especially when the load being drawn by the electrical system is low. The RR is simply converting excess stator output wattage (that isn’t needed to run the bike and charge the battery) to heat. That’s why there are cooling fins on the RR.

Does Rectifier need to be grounded?

The R/ R does not need to be grounded or bolted. It will work if you were holding it in your hand. Adding that the R/R is grounded through the wire harness. If anyone is having a problem check the connectors and the grounds.

Why is my motorcycle overcharging?

Battery will overcharge if your voltage regulator is not working properly. If you are using a battery that is NOT sized properly for your bike (aka too small of a battery). If the battery has been discharged far too low and has damage to one or more of its cells.

Do you need a rectifier on a motorcycle?

The rectifier regulator converts AC power to DC allowing the alternator to charge the battery, and controls the amount of power delivered to the battery. Without a functioning rectifier -regulator, a weak, dead, or overcharged battery would be the result.

What are the signs of a bad stator?

The stator coil generates the power for the spark plug and other accessories on small engines Without a stator there would be no spark at all, meaning the engine won’t run. While a stator is dying, it can produce a weak spark, causing the engine to miss or run poorly. Symptoms are often worsened as the engine warms up.

Will the rectifier cause no spark?

The regulator / rectifier is a voltage regulator that keeps the battery supplied with a steady 13.4 dc volts no matter what the stator is putting out, which is AC volts that varies with engine RPM. A bad regulator / rectifier will result in a dead battery, and once the battery is competely dead you will not get a spark.

What does a rectifier do?

A rectifier is a device that converts an oscillating two-directional alternating current (AC) into a single-directional direct current (DC). Rectifiers can take a wide variety of physical forms, from vacuum tube diodes and crystal radio receivers to modern silicon-based designs.

How do I know if my motorcycle stator is bad?

Insert each probe into a stator socket. You should read around 0.2 to 0.5 ohms. If you show an open circuit with the “Open” or infinity reading or have higher resistance, then the stator is bad and you must replace it. If these tests all produce positive results, then the stator itself is good.

What causes a stator to go bad?

There are a few things that may cause a stator to fail. Too heavy of a load when operating accessories (winch,heated grips,headlights, etc). If working several of these items at one time (plowing/pulling/possibly stuck at night) you would overload the system. This could cause either the stator or rectifier to fry.

Can a stator cause overcharging?

Anything over 30vac is good. Yes the wires get ver very hot and this unfortunately is normal. If the connector between the R/R and the stator is not making a good connection then the wires can actually get hot enough to burn. It’s impossible for a stator output more voltage then it was designed to do.