Question about 2004 Yamaha YZ 125

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IM TRYING TO FIGURE OUT HOW TO REMOVE IMPELLER TO REPLACE SEAL 2001YZ 125 LEAKS WATER

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The impeller screws onto the impeller shaft. Go to the site below and you can see a parts diagram. You will select the brand, year, model, etc... It has the part numbers and prices.
http://www.babbittsonline.com/pages/parts/viewbybrand/1/Yamaha.aspx

There are actually two seals. Are you sure the leak is a bad seal and not the water pump gasket or a cracked/broken housing cover?

Please post a top rating for this solution. Thanks! :)

Posted on May 19, 2009

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Posted on Jan 02, 2017

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I have a Yamaha yz 125 2003 and there is water leaking out the bottom through a small whole and was wondering why it is doing that as it has just started doing it recently


This is telling you your oil and water seal need replacing ASAP do not ride until fixed as you will seize bottom end guaranteed !
there is small seal each side of your water pump impeller when you take the impeller out replace both even if only one needs doing as you will be going back to replace the one left soon after as they always go together..
Most people would not do this repair without replacing the impeller as well - usually the impeller starts to wear groves where it spins inside the seals then damages the seals So you get the theory behind replacing the whole lot as old impeller can damage your new seals
The seep hole is designed to give you warning of burst seal before its way to late as without the seep hole leak you would have no idea you are leaking coolant into the motor
You can do your self its a bit of work but not complicated - if you do your self don't forget to change your engine oil couple of times after first few rides reduce any risk of having coolant inside it where it should not be
good luck regards Jamie

Aug 29, 2011 | 2003 Yamaha YZ 125

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I have a proline 1.5hp pump need to replace the shaft seal. I can't seem to get the plastic impeller off. We use a screwdriver to hold the shaft screw and try to turn the impeller counter clockwise...


Keep trying - It is stuck and will likely break but you have to remove it to change the seal. It is not uncommon to need to replace the impeller when the seal fails since the water gets behind the impeller shaft and rusts the metal causing the impeller to bind. If you still cannot get it free pull the motor thru-bolts and lock the rotor once removed from the motor in a vice. Use a large pair of channel locks to break the impeller free...replace it if necessary.

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How do I remove the pb460 booster pump in order to install the new one? Does the water have to be turned off from the pool?


You are trying to remove the pump so you can replace the impeller correct?
To remove the impeller you do not need to remove the whole pump. Turn off the electric first. Then just remove the several bolts and separate the back half from the front. Then disconnect the electrical from the motor and your can pull the motor with the seal plate, and impeller all the way out and work on it. To remove the impeller you need to lock the motor and unscrew impeller. Depending on the motor, you remove a cap in the middle of the tailpiece and hold with a wrench, or remove a cap that covers the whole end and grab the shaft with a wrench (usually 7/16") by sliding it under one of the components (not sure exact part off top of my head have to look at it) and then turning impeller. If the impeller has a bolt or screw in the middle remove that first. It should be reverse thread so make sure you don't turn the wrong way and break or strip. If there is no screw, or after you've removed it, just spin the impeller off (it should be counter clockwise standard thread). If you can't do it by hand and assuming you don't have an impeller wrench, be very careful and use a large pliers, pipe wrench, or strap wrench to loosen it. After that you unbolt the motor from the seal plate, pull the seal plate away from motor (this removes half the seal), and then pop the other half of the seal from the seal plate. Make sure replace the shaft seal, and use a tiny bit of pool lube on the rubber parts when installing, but keep the white and black ceramic surfaces 100% free of any dirt, grease, etc while working with them

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Water pump is leaking on my 2001 Yamaha YZF 426 motorcycle.


First you remove the four 8mm bolt that attach the water pump cover to the side cover, the lowest bolt will drain the coolant. next you remove the coolant pipe with one 8mm bolt. The water pump cover like any part that has been in place for years may need some force to remove and that is why you will find two tabs around the outside of the pump cover for prying it off.

Once you have the cover off the impeller unscrews by way of a built in 10mm nut. This nut is right hand threaded and is removable by rotating it counter clockwise with preferably a 6 point socket as a 12 point socket may round the nut sides since the impeller and built in nut are made of aluminum.

To replace the twin seals (one for water/coolant and one for oil) you must remove the engine side cover from the motor and pull the impeller shaft out from the engine side of the cover. After the shaft has been removed the bearing is pulled out with a bearing puller or sometimes it can be removed by pushing it out from the outside in with a makeshift driver but the bearing can be damaged by this method and it is not recommended. The old seals can now be pulled out or pushed out from the opposite side.

To replace the new seals you must drive them in perpendicular to the impeller shaft with the manufacture markings to the inside. The water seal is installed from the outside and the oils seal from the inside.

There is a tool used for installing the seals called a seal driver but you could make one in a pinch. The seal driver makes contact with the outside diameter of the seal where it is solid and has a metal core. The inside diameter is soft and flexible and should not be used to push the seal in place however it can be used to keep the seal driver centered over the outer diameter and to keep the seal moving in a strait line perpendicular to the impeller shaft.

Once the new seals are in place they should be greased with some lithium soap based grease.

Install the bearing and reassemble the impeller shaft then you are ready to reassemble the engine side cover and water pump housing but make sure you spin the water pump impeller slowly as you install the engine side cover as the impeller shaft is driven off the engine shaft behind it and the shaft needs to be aligned in order for it to fall in place (do not try to force the cover on).

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3 Answers

Removing water pump impeller


you might have to split the case to get to the back side of the impeller.

Mar 28, 2009 | 2004 Yamaha YZ 125

1 Answer

How to remove impeller shaft seal YAMAHA YZ 125


Hi,

The correct procedure is to remove the RHS engine cover. Then remove the impeller and impeller shaft.
Now press out the seal.
If you yank it out, there is a good chance of damaging the shaft or housing. This will be costly in the long run.

Enjoy the ride

Jon

Mar 02, 2009 | 2003 Yamaha YZ 125

1 Answer

Leaks from handle


If your dishwasher leaks, check these:Main tub seal
Door gasket or seal
Water-inlet valve
Hoses

Main tub seal
Note… If the main motor of your dishwasher is mounted vertically, beneath the center bottom of the dishwasher, the following instructions probably apply to you. But if your motor is mounted horizontally, the pump isn't serviceable--you need to replace the entire pump and motor assembly.

The main tub seal is beneath the drain impeller. It prevents the water in the dishwasher from leaking out near the shaft of the motor. To get to the seal, which is inside the dishwasher, remove the:

1. Lower rack
2. Spray arm
3. Spray arm support
4. Wash/drain impellers


Then pry the seal out of its housing and replace it.


Door gasket or seal
Over time, door gaskets and seals harden and lose their ability to seal properly. You can't repair the seals. You need to replace them if they've begun to leak. 


Water-inlet valve
The water-inlet valve, itself, seldom leaks. But, the water-supply line from the house and the rubber tube leading from the valve to the inside of the dishwasher may leak. Tighten or repair/replace these as necessary.

The water-inlet valve could mechanically stick open. When that happens, the water continues to flow into the dishwasher, which then floods your kitchen. Turn off the water supply to the dishwasher, and replace the valve.

Hoses
Behind the lower access panel on your dishwasher are several rubber or plastic hoses. If the leak appears at a connection, try a new clamp. If that doesn't work, replace the hose.
thanks for using FixYa

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If your dishwasher leaks, check these:
Main tub seal
Door gasket or seal
Water-inlet valve
Hoses

Main tub seal
Note… If the main motor of your dishwasher is mounted vertically, beneath the center bottom of the dishwasher, the following instructions probably apply to you. But if your motor is mounted horizontally, the pump isn't serviceable--you need to replace the entire pump and motor assembly.

The main tub seal is beneath the drain impeller. It prevents the water in the dishwasher from leaking out near the shaft of the motor. To get to the seal, which is inside the dishwasher, remove the:

1. Lower rack
2. Spray arm
3. Spray arm support
4. Wash/drain impellers


Then pry the seal out of its housing and replace it.


Door gasket or seal
Over time, door gaskets and seals harden and lose their ability to seal properly. You can't repair the seals. You need to replace them if they've begun to leak. 


Water-inlet valve
The water-inlet valve, itself, seldom leaks. But, the water-supply line from the house and the rubber tube leading from the valve to the inside of the dishwasher may leak. Tighten or repair/replace these as necessary.

The water-inlet valve could mechanically stick open. When that happens, the water continues to flow into the dishwasher, which then floods your kitchen. Turn off the water supply to the dishwasher, and replace the valve.

Hoses
Behind the lower access panel on your dishwasher are several rubber or plastic hoses. If the leak appears at a connection, try a new clamp. If that doesn't work, replace the hose.
thanks for using FixYa

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Brand new dishwasher installed and water leaks out bottom of door


If your dishwasher leaks, check these:

Main tub seal
Door gasket or seal
Water-inlet valve
Hoses
Main tub seal Note…If the main motor of your dishwasher is mounted vertically, beneath thecenter bottom of the dishwasher, the following instructions probablyapply to you. But if your motor is mounted horizontally, the pump isn'tserviceable--you need to replace the entire pump and motor assembly.

Themain tub seal is beneath the drain impeller. It prevents the water inthe dishwasher from leaking out near the shaft of the motor. To get tothe seal, which is inside the dishwasher, remove the:

  • Lower rack


  • Spray arm


  • Spray arm support


  • Wash/drain impellers


Then pry the seal out of its housing and replace it.

Door gasket or seal Overtime, door gaskets and seals harden and lose their ability to sealproperly. You can't repair the seals. You need to replace them ifthey've begun to leak.

Water-inlet valve Thewater-inlet valve, itself, seldom leaks. But, the water-supply linefrom the house and the rubber tube leading from the valve to the insideof the dishwasher may leak. Tighten or repair/replace these asnecessary.

The water-inlet valve could mechanically stick open.When that happens, the water continues to flow into the dishwasher,which then floods your kitchen. Turn off the water supply to thedishwasher, and replace the valve.

Hoses Behindthe lower access panel on your dishwasher are several rubber or plastichoses. If the leak appears at a connection, try a new clamp. If thatdoesn't work, replace the hose.

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