Getting to Know the Bike

OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
Not supposed to use Rotella T4
The oil is rated for use on wet clutches (JASO MA) and I am using this oil on my other bikes with hydraulic clutches.

Check the orientation of the pushrod from the lever into the clutch MC piston
Thanks, will do. I'll be checking the MC return port as well to make sure it releases pressure.
 
OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
The bike is now home after trailering, etc. I was able to load the bike onto the trailer with engine power, but lost power (to rear wheel) shortly. So, I guess the plan is to start with the clutch hydraulics first, inspect the MC, SC and clean/flush the line(s) and replace oil seals as required. Fluid looks clean through the sight glass.

Then, should clutch still slip, I'll have to get into the meat and potatoes - open the front of the engine to access the frictions/steels (which were supposedly replaced). From what I can see in Partzilla's exploded view, the frictions are of 3 different part numbers with specific locations/order within the clutch basket and I hope that's what's installed.

More to come on this one.
 
OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
So, yesterday I removed the clutch MC cover for a peek inside and this is what I found:

20240417_181453.jpg

Rust sludge? Never seen this much deposits - fluid seems to have been changed but the reservoir was never cleaned.

Another pic after sucking all that junk out:

20240417_181733.jpg

And finally, after cleaning:

20240417_183243.jpg

Problem is that I get nothing out of the return port when I pump the lever, so next is to clean the return. Also I can only imagine what's downstream from here, so next is to remove/clean the slave and flush the lines.

Along the same lines, what's going on in the braking system I wonder...
 

Mellow

Joe
Admin
Joined
Dec 1, 2004
Messages
18,881
Age
60
Bike
'21 BMW R1250RT
2024 Miles
002760
The bike is now home after trailering, etc. I was able to load the bike onto the trailer with engine power, but lost power (to rear wheel) shortly. So, I guess the plan is to start with the clutch hydraulics first, inspect the MC, SC and clean/flush the line(s) and replace oil seals as required. Fluid looks clean through the sight glass.

Then, should clutch still slip, I'll have to get into the meat and potatoes - open the front of the engine to access the frictions/steels (which were supposedly replaced). From what I can see in Partzilla's exploded view, the frictions are of 3 different part numbers with specific locations/order within the clutch basket and I hope that's what's installed.

More to come on this one.
If needed.. hopefully not,

 

Mellow

Joe
Admin
Joined
Dec 1, 2004
Messages
18,881
Age
60
Bike
'21 BMW R1250RT
2024 Miles
002760
So, yesterday I removed the clutch MC cover for a peek inside and this is what I found:

20240417_181453.jpg

Rust sludge? Never seen this much deposits - fluid seems to have been changed but the reservoir was never cleaned.

Another pic after sucking all that junk out:

20240417_181733.jpg

And finally, after cleaning:

20240417_183243.jpg

Problem is that I get nothing out of the return port when I pump the lever, so next is to clean the return. Also I can only imagine what's downstream from here, so next is to remove/clean the slave and flush the lines.

Along the same lines, what's going on in the braking system I wonder...
That's pretty typical... I would always flush the clutch fluid yearly since it was so easy to do compared to the brakes.
 
OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
So finally I got the bike in "service mode", below, during which several things have surfaced (not good things).


20240421_150323.jpg

I started with the air intake, fearful that I would find some live animal in there, however the only bad thing while removing the top cover of the airbox was the missing screws at the back of the cover, which later I found laying on the rubber sheet below the throttle body (positive). K&N washable filter, dirty as hell, now washed and clean. While in there I removed the cruise actuator as well.

Having a hard time raising the fuel tank due to some interference with the handlebar raisers, I removed the central plate in between the raisers to find the yellow screw (normally covered by the central plate) on the right handlebar only half way in... I guess I'll retorque all the screws in that area at reassembly.

Since my target was to get to the clutch SC - not very serviceable due to location - and also wanting to inspect the swingarm bearings, I fiddled for a while with removing the O2 sensor wires, loosening the brake lines/ABS sensor, etc, on top of the swingarm, and finally got the swingarm out.

Before that, I found out that bike came with a Hagon rear monoshock, which unfortunately had the preload line severed, due to rubbing against the rear tire??? Anyone should have info on getting a replacement line please advise (thanks in advance!!).

20240421_114938.jpg

20240421_120300.jpg

Back to the swingarm, removed the bearings noticing that the outer races have mar marks on them from where the rollers were and the inner race is frozen to the rollers on both sides, new bearings required. Any ideas on removing the outer races from swingarm please advise. Next bearing to check will be the needle bearing for the shock.

20240421_145730.jpg

Rear brake caliper - pin boots have tears and need replacing, unsure about the piston seals which will determine at time of rebuild.

Brake fluid in the MC reservoir looked the same as clutch (neglected, with rust deposits at the bottom).

Finally got to removing the clutch SC, condition as below (not surprising with the general maintenance condition of the bike which became apparent more and more as I was removing things):

20240421_144747.jpg

The mating location on the engine is similar:

20240421_144828.jpg

At this point I returned to cleaning the return port in the clutch MC - which prevented riding the bike home - my usual copper wire method did not work, needed a fine sewing needle which got the job done, see black specs that came out of the port - now, when pulling/releasing the lever I can see the flow coming out of that return port. I flushed the clutch lines with fresh brake fluid and lots of rust came out, also the SC was full of rust sludge.

20240421_135042.jpg

Time to order some parts.
 

Sadlsor

Site Supporter
Joined
Jan 15, 2020
Messages
4,254
Age
66
Location
Birmingham, Alabama
Bike
2008 ST1300A
STOC #
9065
That's some serious neglect that's been going on for a while.
Looks like you're on top of it though.
As you might imagine, none of this is out of the ordinary, not for any bike left unattended for a number of years.
 
Joined
Jan 29, 2024
Messages
100
Age
29
Location
Columbus, OH
Bike
2003 ST1300A
@draser I'm surprised the handlebar spacer is giving interference. Just to be sure, have you already loosened the back tank bolts and slid it back as far as it will go?
 

Igofar

Site Supporter
Joined
Jan 8, 2011
Messages
7,106
Location
Arizona
Bike
2023 Honda CT125A
So finally I got the bike in "service mode", below, during which several things have surfaced (not good things).


20240421_150323.jpg

I started with the air intake, fearful that I would find some live animal in there, however the only bad thing while removing the top cover of the airbox was the missing screws at the back of the cover, which later I found laying on the rubber sheet below the throttle body (positive). K&N washable filter, dirty as hell, now washed and clean. While in there I removed the cruise actuator as well.

Having a hard time raising the fuel tank due to some interference with the handlebar raisers, I removed the central plate in between the raisers to find the yellow screw (normally covered by the central plate) on the right handlebar only half way in... I guess I'll retorque all the screws in that area at reassembly.

Since my target was to get to the clutch SC - not very serviceable due to location - and also wanting to inspect the swingarm bearings, I fiddled for a while with removing the O2 sensor wires, loosening the brake lines/ABS sensor, etc, on top of the swingarm, and finally got the swingarm out.

Before that, I found out that bike came with a Hagon rear monoshock, which unfortunately had the preload line severed, due to rubbing against the rear tire??? Anyone should have info on getting a replacement line please advise (thanks in advance!!).

20240421_114938.jpg

20240421_120300.jpg

Back to the swingarm, removed the bearings noticing that the outer races have mar marks on them from where the rollers were and the inner race is frozen to the rollers on both sides, new bearings required. Any ideas on removing the outer races from swingarm please advise. Next bearing to check will be the needle bearing for the shock.

20240421_145730.jpg

Rear brake caliper - pin boots have tears and need replacing, unsure about the piston seals which will determine at time of rebuild.

Brake fluid in the MC reservoir looked the same as clutch (neglected, with rust deposits at the bottom).

Finally got to removing the clutch SC, condition as below (not surprising with the general maintenance condition of the bike which became apparent more and more as I was removing things):

20240421_144747.jpg

The mating location on the engine is similar:

20240421_144828.jpg

At this point I returned to cleaning the return port in the clutch MC - which prevented riding the bike home - my usual copper wire method did not work, needed a fine sewing needle which got the job done, see black specs that came out of the port - now, when pulling/releasing the lever I can see the flow coming out of that return port. I flushed the clutch lines with fresh brake fluid and lots of rust came out, also the SC was full of rust sludge.

20240421_135042.jpg

Time to order some parts.
That’s not sludge…..this is sludge!
Dealer maintained bike, serviced at the dealership for sale, ready to ride across country :rofl1:
 

Attachments

OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
I'm surprised the handlebar spacer is giving interference. Just to be sure, have you already loosened the back tank bolts and slid it back as far as it will go?
The seat adjuster mech (to which the tank attaches) is removed, even with sliding the tank back (as much as the hardened main fuel hose allows) I would still have minimal space between tank and controls when raising tank up. Much easier now (and useful to me as I discovered the untorqued screw for the right handlebar).

BTW, I have all the cruise control components off the bike, anytime you come up give me a shout. Will do the same should I be coming to Columbus.
 
Joined
Jan 29, 2024
Messages
100
Age
29
Location
Columbus, OH
Bike
2003 ST1300A
The seat adjuster mech (to which the tank attaches) is removed, even with sliding the tank back (as much as the hardened main fuel hose allows) I would still have minimal space between tank and controls when raising tank up. Much easier now (and useful to me as I discovered the untorqued screw for the right handlebar).

BTW, I have all the cruise control components off the bike, anytime you come up give me a shout. Will do the same should I be coming to Columbus.
Perfect! Let me know what I owe you; I may be crossing to Ontario at Detroit Sunday early morning and in reverse in the afternoon.
 
OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
You owe me nothing, hopefully you can reuse it as it doesn't look that great.
 
OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
Question to the forum, relative to the swingarm/rear monoshock/needle bearing... anyone noticed a small radial play between the bushing that goes into the needle bearing (and the bottom fork of the shock attaches to), I would not think there should be play there... guessing there will be clunks going over road bumps. Can't really see any wear on the bushing, funny with the needle bearing that the needles go slightly crooked if you turn from either side (but I don't see a bearing cage that will keep needles straight).
 
OP
OP
draser
Joined
Mar 6, 2024
Messages
48
Age
70
Location
Detroit
Bike
2003 Honda ST1300
If you email them I'm sure you can get parts.
I corresponded with them, they're saying I can't replace the line and refill the adjuster on my own and need to send the shock to them (in England). That sounds like a bunch of crap to me, unless I'm missing something. I'll just get a replacement line and some oil (jack oil??? seems to be the choice, I'd have thought it'll be fork oil) and refill per forum's procedure. Someone please chime in if I'm in the weeds.
 

Andrew Shadow

Site Supporter
Joined
Jan 28, 2012
Messages
5,064
Location
Montreal
Bike
2009 ST1300A9
I corresponded with them, they're saying I can't replace the line and refill the adjuster on my own and need to send the shock to them (in England). That sounds like a bunch of crap to me, unless I'm missing something. I'll just get a replacement line and some oil (jack oil??? seems to be the choice, I'd have thought it'll be fork oil) and refill per forum's procedure. Someone please chime in if I'm in the weeds.
Be damned if I would send it to them. If they were close by and the repair was reasonable sure, but the shipping to/from England makes it financially not viable in my opinion.
I would take it to a shop that makes made-to-measure hydraulic hoses and get a replacement hose made. Then I would bleed and refill it just like any other preload adjuster.
 

jfheath

John Heath
Site Supporter
Joined
Mar 18, 2006
Messages
2,839
Age
70
Location
Ilkley, W Yorkshire, UK
Bike
2013 ST1300 A9
2024 Miles
000679
STOC #
2570
You're a while away from this yet - but I'll post it while I remember. You may find it useful. There is s useful post for taking a fairing off and identifying the nuts and bolts so that you can put them all back together again. I provide a link to that.

My post is different - it tells you how to replace the fairing and how to identify which bolt goes where just by looking at it - download the pdf in Post#1. It is written for a UK ST1300A9 model. There are some minor differences with some earlier bikes. You will know.

 

Igofar

Site Supporter
Joined
Jan 8, 2011
Messages
7,106
Location
Arizona
Bike
2023 Honda CT125A
I corresponded with them, they're saying I can't replace the line and refill the adjuster on my own and need to send the shock to them (in England). That sounds like a bunch of crap to me, unless I'm missing something. I'll just get a replacement line and some oil (jack oil??? seems to be the choice, I'd have thought it'll be fork oil) and refill per forum's procedure. Someone please chime in if I'm in the weeds.
You can re-fill it just like the OEM Honda shock, which Honda, Penske, Progressive, and everyone else will tell you ONLY they can do it :rofl1:
 

jfheath

John Heath
Site Supporter
Joined
Mar 18, 2006
Messages
2,839
Age
70
Location
Ilkley, W Yorkshire, UK
Bike
2013 ST1300 A9
2024 Miles
000679
STOC #
2570
Filling the fluid line for the rear shock is relatively easy. Theres a thread on here somewhere. I bought a brand new Honda replacement and it came with (about) 10 clicks of free space before it started to move the preload - so my very first job was to refill that. It is impossible for me to get it so that there is no air at all in there, but if you fill the lines up, move the piston a few times and bolt the banjo bolt with fluid flowing out as you tighten - well I got it to just two clicks. Standard OEM is 7 clicks.
 
Last edited:
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