Ducati Monster Forum

Moto Board => Tech => Topic started by: ZachDDill on May 24, 2011, 12:03:30 PM

Title: Not sure what fluid I need?
Post by: ZachDDill on May 24, 2011, 12:03:30 PM
Okay so there are two watch glasses, one on the right side that I assume is oil because There is a screw off cap where I put the oil in... but the other side I have no idea about, is it brake fluid? if not/so how do I put more in? its obviously low and leaking I just don't know how to fix it.
(http://farm4.static.flickr.com/3018/5755934286_596d0a9031_m.jpg)(http://farm6.static.flickr.com/5105/5755933778_922c672756_m.jpg)

Title: Re: Not sure what fluid I need?
Post by: Slide Panda on May 24, 2011, 12:08:22 PM
The left side isn't a fluid window. It's for looking at timing marks.
Title: Re: Not sure what fluid I need?
Post by: zooom on May 24, 2011, 12:15:18 PM
Quote from: Sad Panda on May 24, 2011, 12:08:22 PM
The left side isn't a fluid window. It's for looking at timing marks.

shush you...

it is where you put in the HID Blinker Fluid!

;) :P
Title: Re: Not sure what fluid I need?
Post by: Slide Panda on May 24, 2011, 12:18:09 PM
Quote from: zooom on May 24, 2011, 12:15:18 PM
shush you...

it is where you put in the HID Blinker Fluid!

;) :P

He lies! It's for the flux capacitor which is very moisture sensitive. Do not put any blinker fluid in there.
Title: Re: Not sure what fluid I need?
Post by: hackers2r on May 24, 2011, 12:57:36 PM
As previously mentioned, the one on the shifter side is for timing marks. Not sure of the fluid you're mentioning but where is it leaking from? Is the oil level low in the sight glass?
Title: Re: Not sure what fluid I need?
Post by: ZachDDill on May 24, 2011, 01:05:58 PM
Quote from: hackers2r on May 24, 2011, 12:57:36 PM
As previously mentioned, the one on the shifter side is for timing marks. Not sure of the fluid you're mentioning but where is it leaking from? Is the oil level low in the sight glass?

The watch glass on the brake side is perfectly in the center of the watch glass so I don't know where it is leaking from.
Title: Re: Not sure what fluid I need?
Post by: Slide Panda on May 24, 2011, 01:08:23 PM
Be sure that the bike is on level ground and upright (no resting on it's side stand) when you take the oil level. There will be two marks on the right hand glass. The oil level should be between the two marks. Consult your manual regarding if the level should be taken warm or cold - it changed at some point.

If you have a fluid leak on left side there's two options. But be sure the leak is on the left side. Due to air turbulence and capillary action leaking fluids drip at a spot far from their source. But if it is coming from the left your options are:
1 - Oil. The seal between the main case and the accessory case can fail. My bike developed a leak between the main case and acc case right by the clutch slave
2 - Brake fluid from the clutch. It is far from unheard of for the seal on the clutch slave piston to fail with age and allow fluid to leak.

So - start hunting and let us know.
Title: Re: Not sure what fluid I need?
Post by: ZachDDill on May 24, 2011, 01:10:15 PM
Quote from: Sad Panda on May 24, 2011, 01:08:23 PM
Be sure that the bike is on level ground and upright (no resting on it's side stand) when you take the oil level. There will be two marks on the right hand glass. The oil level should be between the two marks. Consult your manual regarding if the level should be taken warm or cold - it changed at some point.

If you have a fluid leak on left side there's two options. But be sure the leak is on the left side. Due to air turbulence and capillary action leaking fluids drip at a spot far from their source. But if it is coming from the left your options are:
1 - Oil. The seal between the main case and the accessory case can fail. My bike developed a leak between the main case and acc case right by the clutch slave
2 - Brake fluid from the clutch. It is far from unheard of for the seal on the clutch slave piston to fail with age and allow fluid to leak.

So - start hunting and let us know.

I will get right on that!
Title: Re: Not sure what fluid I need?
Post by: ZachDDill on May 24, 2011, 01:14:29 PM
I'm sorry, when I said the brake side I meant the clutch side. I don't understand what the watch glass is for... Is that not where the shifting mechanism is held?
Btw My oil level on the brake side is perfectly fine.
Title: Re: Not sure what fluid I need?
Post by: ZachDDill on May 24, 2011, 01:20:39 PM
Okay so There was fluid on the ground under my bike and it wasn't oil and it wasn't gas.... what could It possible be?
Title: Re: Not sure what fluid I need?
Post by: Triple J on May 24, 2011, 02:04:12 PM
Quote from: ZachDDill on May 24, 2011, 01:20:39 PM
Okay so There was fluid on the ground under my bike and it wasn't oil and it wasn't gas.... what could It possible be?

The only other fluid you have is brake (both in the brakes and clutch).

Follow the lines from your levers to the brakes (right side obviously), or to the clutch slave cylinder (left side). As the Sad Panda said...clutch slave cylinder failures/leaks are fairly common. Brake leaks aren't common.
Title: Re: Not sure what fluid I need?
Post by: ZachDDill on May 24, 2011, 02:53:45 PM
Quote from: Triple J on May 24, 2011, 02:04:12 PM
The only other fluid you have is brake (both in the brakes and clutch).

Follow the lines from your levers to the brakes (right side obviously), or to the clutch slave cylinder (left side). As the Sad Panda said...clutch slave cylinder failures/leaks are fairly common. Brake leaks aren't common.
Yea i'm thinking it has to be the clutch.
Title: Re: Not sure what fluid I need?
Post by: battlecry on May 24, 2011, 05:31:01 PM
It could be a leak from the rear master cylinder/pee cup hose,
or it could be battery acid.
Title: Re: Not sure what fluid I need?
Post by: ZachDDill on May 25, 2011, 05:01:09 AM
Quote from: battlecry on May 24, 2011, 05:31:01 PM
It could be a leak from the rear master cylinder/pee cup hose,
or it could be battery acid.


I'm pretty sure it is brake fluid.
Title: Re: Not sure what fluid I need?
Post by: Slide Panda on May 25, 2011, 05:24:45 AM
Well the rear master would leak brake fluid. But I can't recall hearing someone having issues with a leaky rear master. A leaking clutch slave... oh yeah.

If you're sure it's brake fluid I personally would start my looking at the clutch system.

Title: Re: Not sure what fluid I need?
Post by: ZachDDill on May 25, 2011, 05:26:32 AM
Quote from: Sad Panda on May 25, 2011, 05:24:45 AM
Well the rear master would leak brake fluid. But I can't recall hearing someone having issues with a leaky rear master. A leaking clutch slave... oh yeah.

If you're sure it's brake fluid I personally would start my looking at the clutch system.



Clutch is my first thing to look at, I was tracing the cables trying to figure out how it all worked and what leads to what and how I could possible fix it.
Title: Re: Not sure what fluid I need?
Post by: battlecry on May 25, 2011, 05:44:27 AM
If the spill is on the right hand side of the bike, check the rear master at the banjo bolt.
If it is oil and not brake fluid, check for a split crankcase vent housing.

You can coat the bike in talcum powder and go for a ride.  It sometimes helps in finding leaks. 
 
Title: Re: Not sure what fluid I need?
Post by: Slide Panda on May 25, 2011, 05:48:34 AM
Relatively simple. The clutch master is connected to the slave via a braided steel line that runs down the left side of the bike. The slave can be seen in the right of the photo you posted. Under normal conditions, it's a sealed system save for the reservoir on your handle bars. When you squeeze the level it pumps fluid from the master down the line into the slave, which pushes a piston.

There's an o-ring seal on that piston that is the most common point of failure. Good news is it can be replaced - bad it that it's usually a messy pain in the ass to do so. Many folks have opted over the years just to replace the slave instead. There's a big market for slaves on the dry clutch bikes (won't go into that here) but you'll probably want to focus on an stock replacement - if you need to.

Though that seal is a common point of failure there's a couple spots to check as well. Make sure that both the banjo and bleeder of the banjo bleeder on the clutch slave are tightened sufficiently and not allowing fluid to leak. Though it's uncommon, leaks can develop there.

Either way - clean up the area well. Brake fluid will wash off with water. Wash and dry the area. If you really want to check, pull off the clutch slave by removing the 3 bolts that hold it on and wipe down the interior with a damp cloth. - (THough if you find it's all wet in there with your mystery fluid, you've probably found the leak) Once clean and dry - put everything back. While you're letting your wash work dry, go to the pharmacy and buy some spray powder deodorant like Arid.

After you've made sure it's all dry, put the slave back on and spray some of the powder around where the slave meets the case and any other area you might suspect as the leak source and go for a little ride. The powder will change color quickly when damp and will make it easier to center on the leak.