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Barbados-WR

Coolant leak

10 posts in this topic

Sometimes coolant is leaking through small hole below water pump housing located on crankcase cover (right). Anyone know why ?

1998 YZ 400F

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i'm having the same problem as well. I know that i need the oil and water seal and the impeller shaft. I see the shaft and oil seal on this diagram but i dont see which one the water seal would be.

YA-5BE100-8050.gif

1: SHAFT, IMPELLER

((5JG5)) 298498-001 $23.93

2: IMPELLER, WATER PU

(5NX1) 295711-001 $48.47

3: WASHER,PLATE

(5NX1) 346834-001 $2.34

4: OIL SEAL

(5NX1) 358878-001 $3.00

5: OIL SEAL,SD-TYPE

(SD 12-22-5 HS) 4983-001 $4.47

6: BEARING

(B6001) 1121-001 $11.37

7: COVER, HOUSING

((5JG5)) 295069-001 $44.05

8: O-RING

((5JG1)) 295070-001 $5.88

9: PIN,DOWEL

(USA) 799-001 $0.73

10: GASKET

(5NX1) 796-001 $1.74

11: DISCONTINUED

(6X25) 363933-001

$0.93

12: PIPE, WATER

((5JG5)) 295076-001 $2.94

13: O-RING

(UR YAMAHA ) 359108-001 $1.06

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#4 is your "water seal" ,#5 is your "oil seal" . Buy those 2 seals along with shaft and bearing #6 . Problems Gone !!!! :applause:

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My bike leaks out of the same hole on the water pump.For me I noticed it just recently started leaking.The only difference is it only dribbles out a little bit of water then when the bike gets warm it stops???.......Any ideas anyone???

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Sometimes coolant is leaking through small hole below water pump housing located on crankcase cover (right). Anyone know why ?

1998 YZ 400F

Hey, I was just in Barbados. Where do you ride. I did the Queens Route tour with a bunch of old fogeys. :applause:

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ya...same problem...sorry to dredge up this old thread, but i searched first!!...lol....so how do you know which you've blown?? why do these blow in the first place?? i just put the whole bike back together after my motard build and i was riding up and down the block...it started to dribble water out of the little hole....you don't always need a shaft do you?

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