Question about 2003 Suzuki RM 125

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How do you change water pump seal 98 rm 250 - 2003 Suzuki RM 125

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  • Suzuki Master
  • 4,336 Answers

Typically the whole pump is replaced, as there is commonly a bearing failure also...

Posted on Jan 09, 2013

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Posted on Jan 02, 2017

agent91
  • 2100 Answers

SOURCE: how do you change water pump seal 98 rm 125 !!???

It should be just that, a leaking seal, gasket. The water pump is external on that bike and doesn't go anywhere but the cooling dept.It doesn't get mixed with oil or anything. Take off the pump itself and replace the gasket. I think that should do it, unless it is the pump itself leaking.
Suzuki RM125 RM 125 Water Pump Housing,,,,
That is an ebay ad. Just in case. Hope this helps.

Posted on May 03, 2010

Porrelli
  • 167 Answers

SOURCE: 1995 rm 250 blown water pump seal

Iv'e changed heaps of these.Follow these steps taking carefull note of where & how everything goes to make it easy to put back together. make sketches if necessary.

  • Drain the coolant & engine oil
  • Remove the hoses that go to the water pump
  • remove the waterpump cover
  • remove the impellor
  • remove the kickstarter
  • remove the clutch cover & locating dowel pins if they are still in the clutch cover(if they didn't stay in the crank case)
  • the water pump seal is a (ceramic) two piece unit
  • remove the ceramic disc & rubber holder from the back of the impellor
  • remove the impellor drive shaft from the clutch cover
  • behind the impellor drive shaft there is a small bearing. To remove this I heat around the alloy of the bearing with a heat gun (or butaine gas torch,if using an oxy torch use a small tip & take care to heat evenly & not melt anything/or heat in an oven to 80 to 100 degrees max)Use welding gloves to handle the hot clutch cover)
  • turn the cover over & whack it down on a flat piece of wood(9 times out of 10 this is enough to shock out the bearing
  • remove the back-up seal from behind the bearing you just removed noteing the direction it was facing(for reassembly)
  • now using a suitable drift,knock out the other half of the mechanical seal
  • scrape all the gaskets & clean the parts
  • check the impellor drive shaft to make sure the shaft is smooth & dosn't have any groves worn in it.If it does you'll have to replace it
  • I always fit a new impellor bearing & back-up seal & new gaskets when doing this job
  • reassembly is reverse of removal noting the following
  • to install the bearing & seals use a socket that matches the OUTSIDE diamiter of them so you don't damage them.To install the rubber cup & ceramic washer into the impellor DON'T use a drift just push them in by hand
  • apply some grease to the impellor shaft before installing it
  • Apply some soap to the ceramic disc before re-fitting it
  • to install the clutch cover, if it won't go on at the front near the impellor, turn the impellor shaft to engage the gear
  • refit kickstarter,waterpump cover,hoses
  • re-fill radiator with fresh coolant
  • re-fill gearbox with fresh gearbox oil
That just about covers it all
Hope this helps you
Regards Andrew Porrelli

Posted on Dec 03, 2009

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1 Answer

How do you change water pump seal 98 rm 125 !!???


It should be just that, a leaking seal, gasket. The water pump is external on that bike and doesn't go anywhere but the cooling dept.It doesn't get mixed with oil or anything. Take off the pump itself and replace the gasket. I think that should do it, unless it is the pump itself leaking.
Suzuki RM125 RM 125 Water Pump Housing,,,,
That is an ebay ad. Just in case. Hope this helps.

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I have white oil dripping out of my 2001 rm250.. what do i do?


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Mar 30, 2010 | 2003 Suzuki RM 250

1 Answer

How do i remove the water pump on a 1999 suzuki rm 250


hi,drop the oil, remove the right hand casing. undo the water pump casing. remove the impeller (10mm bolt) dont lose the copper/ally washer. draw the drive shaft from the inside of the casing. remove the bearing. remove the seals, keep note which way round the seals are. they should be opposite. one keeps oil in and the other keeps the water out of the oil. if there are any score marks on the drive shaft,replace it , as it will only leak again. to put it back together, just reverse process. hope this helps. kev.

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1 Answer

1995 rm 250 blown water pump seal


Iv'e changed heaps of these.Follow these steps taking carefull note of where & how everything goes to make it easy to put back together. make sketches if necessary.
  • Drain the coolant & engine oil
  • Remove the hoses that go to the water pump
  • remove the waterpump cover
  • remove the impellor
  • remove the kickstarter
  • remove the clutch cover & locating dowel pins if they are still in the clutch cover(if they didn't stay in the crank case)
  • the water pump seal is a (ceramic) two piece unit
  • remove the ceramic disc & rubber holder from the back of the impellor
  • remove the impellor drive shaft from the clutch cover
  • behind the impellor drive shaft there is a small bearing. To remove this I heat around the alloy of the bearing with a heat gun (or butaine gas torch,if using an oxy torch use a small tip & take care to heat evenly & not melt anything/or heat in an oven to 80 to 100 degrees max)Use welding gloves to handle the hot clutch cover)
  • turn the cover over & whack it down on a flat piece of wood(9 times out of 10 this is enough to shock out the bearing
  • remove the back-up seal from behind the bearing you just removed noteing the direction it was facing(for reassembly)
  • now using a suitable drift,knock out the other half of the mechanical seal
  • scrape all the gaskets & clean the parts
  • check the impellor drive shaft to make sure the shaft is smooth & dosn't have any groves worn in it.If it does you'll have to replace it
  • I always fit a new impellor bearing & back-up seal & new gaskets when doing this job
  • reassembly is reverse of removal noting the following
  • to install the bearing & seals use a socket that matches the OUTSIDE diamiter of them so you don't damage them.To install the rubber cup & ceramic washer into the impellor DON'T use a drift just push them in by hand
  • apply some grease to the impellor shaft before installing it
  • Apply some soap to the ceramic disc before re-fitting it
  • to install the clutch cover, if it won't go on at the front near the impellor, turn the impellor shaft to engage the gear
  • refit kickstarter,waterpump cover,hoses
  • re-fill radiator with fresh coolant
  • re-fill gearbox with fresh gearbox oil
That just about covers it all
Hope this helps you
Regards Andrew Porrelli

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