Water Pump Mechanical Seal - Honda RC51 Forum : RC51 Motorcycle Forums
 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 04-22-2014, 12:36 PM Thread Starter
GWS
Senior Member
 
GWS's Avatar
 
Join Date: Sep 2013
Location: Minneapolis
Posts: 185
Mentioned: 1 Post(s)
Quoted: 13 Post(s)
Water Pump Mechanical Seal

After my first ride of the season I noticed that coolant was coming from the Water Pump Inspection Hose, so I guess I need to pull it in and replace the Water Pump Mechanical Seal. Could someone who has done this job before let me know what is involved? In replacing the Mechanical Seal, do I need to take off the whole Crankcase Cover like the manual suggests, or just the Water Pump Cover? What is the difficulty of this job, and do I need a bearing press?

I was thinking it might be a good time to replace the OEM radiator hoses, but it looks like the aftermarket ones are around $200. Has anyone ever had one fail?

After the first ride I also noticed that the fork seals are leaking, so I have my work cut out for me despite the nice weather lol.

GWS is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 04-22-2014, 03:41 PM
Senior Member
 
Join Date: Jul 2011
Location: Yuma, AZ
Posts: 169
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
You have to pull the entire crankcase cover, as the water pump impeller rides in a bearing that's pressed into the cover. I replaced mine last year. I'm not sure you would be able to do it yourself without the installer tool, because the bearing and seal have to be pressed into the cover at a specific depth (not flush with the outer face that your arbor plates would be in contact with). I bought all the parts online, pulled the case cover, and had a local shop do the installation. I think it cost me about $45-50 in labor.

2008 Ducati Monster S2R1000 (the mod whore)
2003 RC51 (sold)
2002 ZX-7R (sold)

Last edited by Crarrs; 04-22-2014 at 03:48 PM.
Crarrs is offline  
post #3 of 10 (permalink) Old 04-22-2014, 07:43 PM
Lifetime Premium
 
The Stig's Avatar
 
Join Date: May 2011
Location: Chiba, Japan
Posts: 4,617
Mentioned: 27 Post(s)
Quoted: 159 Post(s)
I think you'd definitely need specialist tools. I tried doing mine using a press and ended up messing it up, so I went for a new assembly in the end which cost approx $300 (Don't make the same mistake as I did and buy an SP1 assembly if you have an SP2 - it's only anodising on the exterior - but the part numbers do differ).
You might be able to find a used one cheaply - maybe even on here, as there's a fair few engines that have been parted out.

Euro RC51 SP2: HRC WSB Ti Hi-Level, T1 Airbox & Snorkel, PCIII, Dymag CA5 Carbon Wheels, Ti64 Spindles (F, R & Swing Arm), Mori Link, Maxton GP7 Shock & Ohlins 832 Forks, Brembo GP Calipers & SBK narrow track (F), Braketech Disc (R), Brembo billet Underslung x 2 Brembo RCS, Tyga Triple, 7075 Stem, Probolt Titanium all over, Babyface rearsets, MR Complete Carbon Lineup, Custom Undertail & CBR 1000 LED, Watsen LED Indicators, Harris Brace, Giles clip-ons, Corbin seat, etc. 2013 BOTY.
The Stig is offline  
 
post #4 of 10 (permalink) Old 04-22-2014, 07:45 PM
Lifetime Premium
 
The Stig's Avatar
 
Join Date: May 2011
Location: Chiba, Japan
Posts: 4,617
Mentioned: 27 Post(s)
Quoted: 159 Post(s)
Fork seals are easy to DIY although you need a few tools to make it easier (& some can be made using drainage pipe & ratchet straps with hooks!) Search - there's a guide on here on how to do it.

Euro RC51 SP2: HRC WSB Ti Hi-Level, T1 Airbox & Snorkel, PCIII, Dymag CA5 Carbon Wheels, Ti64 Spindles (F, R & Swing Arm), Mori Link, Maxton GP7 Shock & Ohlins 832 Forks, Brembo GP Calipers & SBK narrow track (F), Braketech Disc (R), Brembo billet Underslung x 2 Brembo RCS, Tyga Triple, 7075 Stem, Probolt Titanium all over, Babyface rearsets, MR Complete Carbon Lineup, Custom Undertail & CBR 1000 LED, Watsen LED Indicators, Harris Brace, Giles clip-ons, Corbin seat, etc. 2013 BOTY.
The Stig is offline  
post #5 of 10 (permalink) Old 04-22-2014, 11:22 PM Thread Starter
GWS
Senior Member
 
GWS's Avatar
 
Join Date: Sep 2013
Location: Minneapolis
Posts: 185
Mentioned: 1 Post(s)
Quoted: 13 Post(s)
I'm sorry to hear that I need to take the Crankcase Cover off, but that's just the way it goes I guess. I think Crarrs had a good idea buying the new parts, and then taking the parts and the Crankcase Cover to a dealership for pressing. I hate taking anything to a shop, but I am really leaning towards that based on what you guys have said. If I was to do it myself would I need more than just a bearing press? Also, how would I get the Impeller out of the Crankcase, would it just tap out?

#2 is the Mechanical Seal, which I know needs replacing, but what other parts would need to be replaced?

I figure I might as well replace #4, 8, & 10 while I'm at it. What do you think?



#1 IMPELLER, WATER PUMP
#2 SEAL, MECHANICAL
#3 COVER, WATER PUMP
#4 GASKET
#5 GEAR
#6 BOLT, FLANGE (6X28)
#7 BOLT, FLANGE (6X55)
#8 OIL SEAL (12X22X5)
#9 PIN, DOWEL (8X14)
#10 BEARING (6200)
GWS is offline  
post #6 of 10 (permalink) Old 04-22-2014, 11:27 PM Thread Starter
GWS
Senior Member
 
GWS's Avatar
 
Join Date: Sep 2013
Location: Minneapolis
Posts: 185
Mentioned: 1 Post(s)
Quoted: 13 Post(s)
Also, when I put the Crankcase Cover back on is there a gasket? I don't see anything on the diagrams. The manual says to use a sealant, does Honda have a special one?

Thanks for the help guys!
GWS is offline  
post #7 of 10 (permalink) Old 04-23-2014, 09:04 AM
Senior Member
 
Join Date: Jul 2011
Location: Yuma, AZ
Posts: 169
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
I ordered 2, 8, 4, and 10 from the water pump fiche, and replaced all of the O-rings/seals on the crankcase cover as well. I figured it was good practice to replace all of them (and I think the manual calls this out as well).

I'm not sure how to get the water pump out of the crankcase cover without the special tools. The impeller is pressed onto the shaft on the outside of the case, and the drive gear is pressed onto the shaft on the inside of the case. Parts 2, 8, and 10 are all pressed into the case cover.

I think I just used Permatex grey on the case cover when I put it all back together, but it could've been the Hondabond stuff. Not sure anymore, and it probably wouldn't make a difference.

2008 Ducati Monster S2R1000 (the mod whore)
2003 RC51 (sold)
2002 ZX-7R (sold)
Crarrs is offline  
post #8 of 10 (permalink) Old 04-23-2014, 10:52 AM
Lifetime Premium
 
Join Date: Apr 2009
Posts: 1,858
Mentioned: 10 Post(s)
Quoted: 135 Post(s)
Quote:
Originally Posted by GWS View Post
Also, when I put the Crankcase Cover back on is there a gasket? I don't see anything on the diagrams. The manual says to use a sealant, does Honda have a special one?

Thanks for the help guys!
Honda-bond or Yamabond will work too.
sbkdrew is online now  
post #9 of 10 (permalink) Old 04-25-2014, 02:46 AM Thread Starter
GWS
Senior Member
 
GWS's Avatar
 
Join Date: Sep 2013
Location: Minneapolis
Posts: 185
Mentioned: 1 Post(s)
Quoted: 13 Post(s)
Just wanted to give an update, because I hate when a thread mysteriously dies. I ordered all of the parts to pull the Crankcase, which came to about $65 on Partzilla, and found a local Honda dealer who is going to pull and press the Impeller for $35-40. So, that has me pretty encouraged that I'm am going to be able to get this done and back on the road before too long.

I was originally going to take my forks in to have the seals done, but after some encouragement from The Stig, and after reading the How To several times, I am going to attempt it myself. Wish me luck lol.

I have to wait till next week for the parts to come in. I'll let you know how it all turns out.

Please feel free to pass advice my way!!!
GWS is offline  
post #10 of 10 (permalink) Old 04-25-2014, 10:48 AM
Senior Member
 
Join Date: Jul 2011
Location: Yuma, AZ
Posts: 169
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Partzilla? EEK!

I ordered these EXACT SAME parts from them last year. They lost my order in their system for 3 weeks. Five phone calls later (they assured me the parts had shipped already on 3 of those phone calls), they finally started moving the order through their process. They refused to cancel the order, refund my shipping, upgrade me to 2-day shipping, or do any other type of goodwill gestures to put things right from a customer satisfaction perspective. They refused to accept any accountability for the issue, and essentially said "Sorry....the system messed up. We can't do anything about it *Shrug* Can you talk to my manager? Ummm.....let me transfer you." And then I got hung up on.

Don't get sucked in by the fact that their prices are 2-3% lower than the other parts supply houses. Never ordering from those dipshits again.

2008 Ducati Monster S2R1000 (the mod whore)
2003 RC51 (sold)
2002 ZX-7R (sold)

Last edited by Crarrs; 04-25-2014 at 10:51 AM.
Crarrs is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda RC51 Forum : RC51 Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome