Article [13] ST1300 - Lower Steering Stem, Top Bridge, and Steering Bearings Replacement

Joined
Jun 4, 2007
Messages
25
Location
Dublin, Ohio
Bike
2005 ST1300
Subtitle: How I thought my ST might be toast!

During my initial call to @Igofar on the White Courtesy Phone, I learned that my forks and front axle were misaligned. I had read some posts on the subject, but I’ll admit I didn’t understand the phenomenon. Moreover, I wasn’t fully comprehending the process.

During the call, Larry explained the process. Honestly, I didn’t understand his explanation and wasn’t sure I could do it, but he assured me I could. While I was awaiting the parts to replace the SMC and rebuild my brake calipers, I thought I’d try and take a stab at aligning my forks/axle.

When I want to loosen the pinch bolts on the right fork, I discovered that one of them on the lower steering stem was missing! (See the first picture below.) Sadly, it was even worse than I knew because the top half of the bolt had broken off! Talk about an “Oh Crap” moment.

I suspect that I had been riding the bike this way since Sept 2019 after a nearby Honda dealer had serviced the forks. Until I went to try the fork/axle alignment, I had no reason to go near the pinch bolts. I was both angry and embarrassed. Now I had to address a problem I should have to and it was something I felt that I should have noticed sooner.

Because the remainder of the bolt was deep inside the steering stem, I decided I needed to call the White Courtesy Phone again. I was thinking that I might have figured he’d tell me that I had to replace the steering stem and bearings, and I was not looking forward to that. That process seemed like advanced Rocket Surgery – lol.

Larry talked me off the ledge and told me not to worry. He theorized that an impact air wrench had been used to tighten the bolt and too much torque had been applied causing the bolt to snap. The break looked clean, and Larry was confident that I could remove the remaining portion of the bolt.

If first tried drilling into the broken bolt using the extractor I had on hand. Per his instructions, I applied heat (with my heat gun), penetrating oil (part acetone, part ATF), an inserted my extractor. Frustratingly, the extractor promptly broke (see picture two).

My extractor was too weak, and now I made the bad situation worse. Although I tried half a dozen more of Larry’s suggestions, it became clear that I was not going to get the broken piece out. That’s when he said I would need to replace the steering stem. I had another “Oh Crap” moment. At this point, I thought my bike had become salvage. Needless to say, I was quite despondent. Quickly, Larry said, “Let me call you right back.”

Several minutes later, he called back and that he spoke with a guy who works on ST’s and who had a used top bridge and lower steering stem in good condition from a decommissioned Police bike. It will come as no surprise to many that the guy Larry called was @Aniwak a.k.a. John Sibley. Larry negotiated a reasonable price with John, and soon, I would have a very nice donor steering stem and top bridge. (see before and after pictures of the donor parts.) Much appreciated @Aniwak! However, he said the bearings and races would need to be replaced. Good grief!

While I was waiting for the parts and tools needed to replace the steering, Larry began coaching me on the process to R&R the bearings and races. Although I understood most of his explanation about the removal process, I wasn’t sure how I was going to install the new bearing races. The Service Manual says to remove the race from the stem using a chisel (yikes). Moreover, the Service Manual details the removal and installation of the races into the steering tube with equipment that is virtually unobtainable in the USA. Furthermore, I had never done anything like this before.

After watching several online videos, Larry’s instructions began to make a lot more sense to me. Because all of the drivers and presses used in the videos to seat the races into the head pipes were for tapered bearings, Larry said I’d need to make my own press using washers and a long bolt or a threaded rod. I will admit, I did not like the sound of that. Had I known that the ST-Riders had a steering stem loaner kit (see post #42 in this link), I wouldn’t have worried so much. Alas, I did not.

Eventually, I came across a 52-piece, non-tapered bearing driver set on Amazon (see below). The variety of metric sizes (18mm to 65mm) looked like the solution to my “washer” dilemma. Each driver/disk had a 12mm opening for the driver handle, so I also ordered a 12mm threaded rod from Amazon. Until the set arrived, I was concerned that the relatively low cost of the set ($50) might not work. Fortunately, the driver set was much sturdier than expected. A picture of the press I fashioned is posted below.

**** The driver set would also come in handy to help me replace the front wheel bearings. (see the picture of the tool and driver) I had to replace the wheel bearings because I believe the axle was over-torqued by the dealer. The inner races of both bearings were so tightly pressed against the spacer/distance collar, the bearing would not move independent of the spacer. Drat! Another problem I have to fix. ****

After the steering stem socket arrived, I was able to remove the steering stem from my bike. (see attached pictures.) The races in the steering pipe punched right out with a drift. Before I seated the new races into the steering tube, I thought I’d practice using a set of cold chisels to remove the race on my damaged steering stem. To my surprise, I was able to remove the race and dust seal! I was ecstatic, and I began to think I might just be able to pull this job off.

Of course, it wasn’t that easy. No matter what I did (heat, penetrating oil, tiny screwdrivers) I could not get the race to budge on the donor part. The bike was fighting me again! This prompted yet another call to the White Courtesy Phone.

Again, Larry reassured me everything would be all right, donned his thinking cap, and brainstormed some solutions with me. Initially, I sought out a local shop that had an ARC welder. According to Larry, the ARC welder could get the race hot enough to slide off. After making several fruitless calls, I visited a local auto repair shop that my wife and I have used in the past. The owner is a motorcycle guy, so I hoped he might be willing to help me.

Sure enough, he was willing and able to help me. Instead of using his ARC welder, he offered to “crack” the race off. Subsequently, he pulled out a 3 in. grinder to score a diagonal line into the race about 2-4mm deep. Then he took a chisel, inserted it into the cut he made, and struck the chisel with his hammer. Viola! The bearing cracked and I was able to slide it off with my fingers! (see the picture below.)

I was able to seat the new race and dust seal using a 12 in. long, 1-1/4 in. galvanized pipe nipple and the cracked race placed upside down atop the new race. It took a fair amount of hammering, but I had done what I thought was going to be impossible (see picture below). Using my handmade bearing race press, I proceeded to seat the new races into the steering tube. After that, it was just a matter of following the Service Manual instructions to install the new bearing and torque the steering head & top bridge to factory specs!

**** Tip: Before torquing the stem nut on the top bridge after the forks have been inserted, turn the steering full to the left to check and make sure that you can lock the forks using the ignition key. If it is hard to lock or won’t lock at all, it means the top bridge and steering stem are slightly misaligned. ****

****
Note: I also had to R&R the ignition switch. Conveniently, Honda uses a special security bolt for which there is no tool (see picture). However, a 1/4 in. bolt extractor (also see picture) will get it out. I used a 25mm long M8 X 1.25 socket cap bolt (see picture), lock washers, and blue Loctite to secure the switch in the donor top bridge. I wish I could have used it for the broken pinch bolt, but I couldn’t. The broken piece was too deep in the steering stem. ****

For inquiring minds, I opted to use the stock Honda caged ball bearings at Larry’s recommendation. The upper race in the steering tube is approximately 47mm, and the lower race is 55mm. I started with a 47mm driver to seat the upper bearing race, but found I had to switch to the 46mm driver disc to completely get it in place. For some reason, all the auto parts, hardware, and Tractor Supply stores in my area didn’t have any urea-based grease. Amazon to the rescue again! I ended up ordering John Deere polyurea grease for the upper and lower bearings (see picture below). Of course, it’s green….

To my surprise, I had actually installed the donor parts and new steering bearings. My bike was no longer a derelict. Moreover, the steering is now both lighter and smoother. Prior to doing this job, I thought my steering just was fine. Now I know better. Thanks, Larry! Now, for the fork/axle alignment…
 

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Wow ! Excellent write up. Thanks for taking the time to post this. I know the feelings you describe when your bike seems to be 'out to get you' and everything you attempt seems to make it worse. Good to have Larry's calm approach and expertise available.

I have never done this job on my STs. I'll be re-reading this a few times with manual in hand to learn something new.

-----

Regarding the wheel bearings and distance collar that you mentioned - they are supposed to be clamped together. When you tighten the main axle bolt it pulls the axle across from the right hand (brake lever) side. A shoulder on the left side of the axle bolt pulls the left hand collar, the left hand bearing, the long spacing tube (distance collar), the right hand bearing and the right hand collar and clamps them all together tightly against the right hand fork leg.

If the bearing isn't seated properly, against the long distance collar / spacing tube, then tightening the axle will pull the bearing across by its centre race. The outer race is pretty firmly held against the wheel hub - so it puts a lateral load on the bearing and makes it bind. It feels tight.

The wheel bearing in this condition lasts for only about 5000 miles - observed from the result of an 'experiment' when in my early ST1100 days I trusted the bearing installation to a dealer.
There is a correct and a wrong order in which bearings have to be replaced.

Some info from me.


 
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Wow ! Excellent write up. Thanks for taking the time to post this. I know the feelings you describe when your bike seems to be 'out to get you' and everything you attempt seems to make it worse. Good to have Larry's calm approach and expertise available.

Regarding the wheel bearings and distance collar that you mentioned - they are supposed to be clamped together. When you tighten the main axle bolt it pulls the axle across from the right hand (brake lever) side. A shoulder on the left side of the axle bolt pulls the left hand collar, the left hand bearing, the long spacing tube (distance collar), the right hand bearing and the right hand collar and clamps them all together tightly against the right hand fork leg.

Thanks @jfheath! Before installing the new bearings, I read both your informative articles and the admonition about not driving the left bearing in far enough and the sideload that could result. In my case, the right and left bearings were pressed so tight against the distance collar that I could turn both bearings simultaneously by moving either the left or right bearing. It required two fingers or more to move either bearing and the distance collar could not be moved off the inner races of the bearings. Even with a drift, I could only get the distance collar to move less than a millimeter. Thus, I was unable punch them out.

Next I tried using the 25mm collet of a the Motion Pro 08-0269 wheel bearing remover set (link) following the procedure in your well done video (here). However, the collet had insufficient clamping force to remove the bearing. Despite using heat and penetrating oil, the bearing was unwilling to budge. In the end, I ordered a blind bearing remover from Tusk (link), which did the trick. It appears to be the same if not identical to the Motion Pro and Pit Posse sets. Since the Motion Pro 08-0269 kit hadn't worked for me, I was reluctant to purchase their set.

**** I would like to recognize @STraymond and @John OoSTerhuis. John is the keeper of the STOC loaner tools, and he was willing to let me use wheel bearing removal/installation tools (link to loaner tool in post #9). The kit was actually in Ohio at the time, but @STraymond was riding back from NatSTOC and would not arrive home for a few days. Although I was looking forward to meeting Ray, I got the bearings out before he returned to Ohio. @STraymond was gracious enough to message me when he wasn't riding and helped me contact Joe (@Mellow), when I was having problems with my ST-Owners account. My thanks to both gentlemen! ****

Granted, installing the left bearing is a tricky proposition. Driven in too far, the bearing will wear prematurely, and not driven in far enough will also result in premature wear and bearing failure. It's a very, very fine line. During my after-action report to @Igofar, I explained that the inner race was touching the spacer/distance collar, but that I could move both bearings without also moving the distance collar. Larry said something to the effect that "...it was a great explanation of how the bearing should fit in the wheel." Did I really get seated correctly? Time will tell. If not, I have tools necessary to replace them.... I will need a new front shoe in a couple of thousand miles, so I will soon have an opportunity to check my work.

I wanted to share my experience as an expression of gratitude to everyone on this forum. I appreciate everyone that has shared his/her knowledge, because I would have probably given up on my beloved ST or worse, had it exclusively serviced by a (gulp) dealer. Not all dealers are bad, but I don't think many of the techs at dealers know much about these bikes anymore. The police model was not used much in Ohio, and the civilian bikes have been out of production for at least a decade. If I want to get another 90,000 miles out of the old gal, it will be incumbent upon me to learn how to fix and maintain her. While I'd rather be ridin' than wrench'n, I'm fine with that. I'll just need to inspect her more often and make sure I do the time intensive work over the winter and not during the riding season.
 
Very nice write up. What pull values did you get with OEM steering bearings after all was said and done?

Unfortunately, I did not have a reliable scale to use. Larry had me do it by feel. I wish I had a fish scale or decent luggage scale. I realize this may require me to adjust the lower stem bearing in the future, but I have the tool now to do it.
 
Well if it feels good you are probably close. When I did my steering head bearings I used tapered rollers instead of OEM ball bearings. Not saying they are better in the application - I usually defer to Honda engineers in such matters - but I didn't have the Honda socket tool to torque the adjusting nut and had to improvise one. My make-do tool did not allow me to use a torque wrench to set the specified bearing preload and ball bearings can be fussier to set up than tapered roller bearings. The high point loading on the balls will hammer dents in the races if the preload is insufficent. The flip side is I had to take the top bridge off a bunch of times to get the pull values in range. I was tightening the adjusting nut by feel then assembling everything then checking it. Trial and error took a number of times of assembly/checking/disassembly/reassembly/checking.
 
Here are my thoughts on tapered bearings based on my experience:

When it comes to finding the right torque for tapered bearings, I've found that it's more about the feeling than relying on special tools. Surprisingly, I discovered that tightening them with my fingers and applying just a bit more pressure creates a perfect setting for a classic setup.

One aspect that continues to puzzle me is the number of miles required for the bearings to properly seat. In my case, I had to readjust and retighten them six times within a span of 5000 miles. To ensure they were seated correctly during installation, I even used an endoscope to inspect them. I took extra caution after receiving warnings from Larry regarding tapered bearings.

Despite the initial challenges, I'm ultimately satisfied with the bearings. They provide a more neutral and stable feeling, which aligns well with my preferences. However, I still can't comprehend why they tend to loosen significantly after installation. Do you have any insights or ideas on this matter?
 
Here are my thoughts on tapered bearings based on my experience:

When it comes to finding the right torque for tapered bearings, I've found that it's more about the feeling than relying on special tools. Surprisingly, I discovered that tightening them with my fingers and applying just a bit more pressure creates a perfect setting for a classic setup.

One aspect that continues to puzzle me is the number of miles required for the bearings to properly seat. In my case, I had to readjust and retighten them six times within a span of 5000 miles. To ensure they were seated correctly during installation, I even used an endoscope to inspect them. I took extra caution after receiving warnings from Larry regarding tapered bearings.

Despite the initial challenges, I'm ultimately satisfied with the bearings. They provide a more neutral and stable feeling, which aligns well with my preferences. However, I still can't comprehend why they tend to loosen significantly after installation. Do you have any insights or ideas on this matter?
Did you apply significant preload first then back off to little more than finger tight on the adjustment nut? I do one post install check then forget about it if there are no symptoms. I did my ST at 96,000 and rode it another 85,000 with just that 1 check and retightening.
 
Did you apply significant preload first then back off to little more than finger tight on the adjustment nut? I do one post install check then forget about it if there are no symptoms. I did my ST at 96,000 and rode it another 85,000 with just that 1 check and retightening.
I did use a preload to set the bearing. (20/25lbf.ft) or until feeling a medium resistance when rotating the fork bridge. Then backed off and applied a little bit less of 7lbf.ft on the final step, checked the setting and play from the wheel axle. Every time, the result was fine when driving for 500/600 miles. But slowly degraded, I could feel the bearing loosening with sometime a vertical play in the steering stem. I have marked the top thread nut and it never moved.
I did put 1200 miles since the last retightening and everything seems to be seated correctly now.
For sure, I am doing something wrong somewhere. However, the relationship of ambient to operating tapered bearing settings is unknown.
That's maybe why Larry advise against tapered bearing for this application, my bad!
Retightening takes less than 15 minutes anyway, not a big deal.
 
I don't know sir. I used the service manual torque just like you did. Convention over the last 20-25 years is for OEMs to use ball bearings in this application but many DIYs and even trained mechanics will replace with tapered rollers. Tapered bearings were the industry standard for a long time but they cost more & take up more room, are adjustable, and last a very long time if maintained. Maybe the cost is why OEMs don't use them anymore. I don't discount Larry's advice to you as both work just fine but if you don't adjust the ball bearings properly you will replace them often instead of adjusting them.
 
I did use a preload to set the bearing. (20/25lbf.ft) or until feeling a medium resistance when rotating the fork bridge. Then backed off and applied a little bit less of 7lbf.ft on the final step, checked the setting and play from the wheel axle. Every time, the result was fine when driving for 500/600 miles. But slowly degraded, I could feel the bearing loosening with sometime a vertical play in the steering stem. I have marked the top thread nut and it never moved.
I did put 1200 miles since the last retightening and everything seems to be seated correctly now.
For sure, I am doing something wrong somewhere. However, the relationship of ambient to operating tapered bearing settings is unknown.
That's maybe why Larry advise against tapered bearing for this application, my bad!
Retightening takes less than 15 minutes anyway, not a big deal.
were you adjusting things with the front wheel on? was the wheel off or on the ground?
 
Take a look at this youtube video from Traxxion. Paying attention to the conical lock washer (with the tabs) when tightening. Might explain troubles with correct steering head bearing torque. Reusing the original washer may not be a great idea. I just got a new one today.
Steering Bearing Torque IMPORTANT TIPS!!! 2001-17 Honda Goldwing - YouTube
This video is a gem! Not only this guy is giving the torque values but, he also explains one of the thing I could never guess: "the conical lock washer".
Just ordered a new one and I am going to replace the 18 years old one that I have re-used many times without knowing the way it was supposed to work.
It feels good to learn something, a big thank for the link!
 
These interesting articles failed to explain the conical lock washer and the need to always replace it , which was the point.
The Honda service manual says to use a new lock washer. I realize most owners don't have one of those and rely on youtubers.
 
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