HD updated the 2018 touring manual to include the DT be used when replacing brake fluid. HD should have created a manual insert requiring the DT be part of the brake fluid service back in 2010/11 when they knew the oem brake fluid had issues and needed to be removed from the hcu. The traditional brake flush does not do that and owners were never informed of it.
Originally Posted by jimglassford
Something has been done. We Some keep buying new Harleys to show HD buyers don't care about history. All the saber rattling on this site about never buying again and they will lose customers just is not true. As long as they build Harleys, we some will buy them. I don't want to hear about how their sales are dropping because of these types of issues. Sales are declining because fewer people buy any brand large motorcycles.
Not to hijack but in the early years of the ABS did they just install it on random models or what. I was under the assumption that all the touring models had it starting in 08. I have a 09 EG with no ABS.
Not to hijack but in the early years of the ABS did they just install it on random models or what. I was under the assumption that all the touring models had it starting in 08. I have a 09 EG with no ABS.
Back then and up until recently, ABS was standard on some models and it was an option on some models. I think it's standard on all touring models now.
Not to hijack but in the early years of the ABS did they just install it on random models or what. I was under the assumption that all the touring models had it starting in 08. I have a 09 EG with no ABS.
ABS became optional on the Touring models in 2008... Prior to that, I believe 2006, some Police models had an earlier ABS system. I believe the ABS module was in a side bag, and it used a tone ring instead of a sensor....
To prepare for the introduction of ABS brakes in the Harley line-up, they switched back to DOT 4 brake fluid, from DOT 5 (which doesn't play well with ABS systems), in 2005 Touring models and then across the model line in 2006...
My 08 has ABS, and I wish it didn't (picked it up used). I avoided the 'free' HD brake flush as I read it was causing failures. I have been swapping my fluid out, riding to activate the ABS unit, then re-flushing.
What % of the fluid in the front (or rear) brake system is actually in the HCU itself?
I ask, as if the rest of the fluid in the system is flushed, and say only 10% of old fluid remains in a non-cycled ABS unit, it would get diluted with the new fluid during the riding season as ABS is periodically activated (?). Ride and repeat annually (picked up new fluid Wednesday).
My 08 has ABS, and I wish it didn't (picked it up used). I avoided the 'free' HD brake flush as I read it was causing failures. I have been swapping my fluid out, riding to activate the ABS unit, then re-flushing.
What % of the fluid in the front (or rear) brake system is actually in the HCU itself?
I ask, as if the rest of the fluid in the system is flushed, and say only 10% of old fluid remains in a non-cycled ABS unit, it would get diluted with the new fluid during the riding season as ABS is periodically activated (?). Ride and repeat annually (picked up new fluid Wednesday).
It sounds like you've been staying on top of your ABS system, so that's a good thing.
Regarding whether or not the old fluid gets diluted by the new fluid when the ABS gets cycled, I would guess that's possible. It would probably be a good idea, once the ABS gets cycled after a brake fluid flush, to flush the fluid one more time. Plus, I think the benefits of cycling the ABS is that the actuator valves in the HCU module get "exercised" so they don't become frozen in place by corrosion, as described in the Chronology H-D Recall 0171 document.
I'm trying to hold off purchasing the ITM HD2 ABS Flush Utility hoping that V&H updates the FP3 to allow owners to activate the ABS module during the brake fluid flush procedure. Though, I'm beginning to have my doubts that's ever going to materialize.
My 08 has ABS, and I wish it didn't (picked it up used). I avoided the 'free' HD brake flush as I read it was causing failures. I have been swapping my fluid out, riding to activate the ABS unit, then re-flushing.
What % of the fluid in the front (or rear) brake system is actually in the HCU itself?
I ask, as if the rest of the fluid in the system is flushed, and say only 10% of old fluid remains in a non-cycled ABS unit, it would get diluted with the new fluid during the riding season as ABS is periodically activated (?). Ride and repeat annually (picked up new fluid Wednesday).
In 2018, the same time when the fluid recall was done, HD changed the brake fluid flush procedure in the touring manual and added the DT procedure. The manual states to flush fluid then exercise abs with DT. A 2nd flush is not mentioned. The free flush recall procedure was the same. Change fluid, exercise abs, no 2nd fluid flush. Maybe a 2nd flush is not necessary but it can only be a neutral to positive benefit.
Exercising the abs is good. I watched a couple abs tool vids and basically mimic that on a large dirt area behind my house. Braking at 20-25mph engages the abs for 3~4 secs. I pump pedal/lever a few runs. And hold pedal/lever a few runs for both front and rear. The tools do exercise the abs valves at a much faster rate producing more abs cycles but I exercise the abs a few times a year. Not once every two years as recommended.
In 2018, the same time when the fluid recall was done, HD changed the brake fluid flush procedure in the touring manual and added the DT procedure. The manual states to flush fluid then exercise abs with DT. A 2nd flush is not mentioned. The free flush recall procedure was the same. Change fluid, exercise abs, no 2nd fluid flush. Maybe a 2nd flush is not necessary but it can only be a neutral to positive benefit.
Exercising the abs is good. I watched a couple abs tool vids and basically mimic that on a large dirt area behind my house. Braking at 20-25mph engages the abs for 3~4 secs. I pump pedal/lever a few runs. And hold pedal/lever a few runs for both front and rear. The tools do exercise the abs valves at a much faster rate producing more abs cycles but I exercise the abs a few times a year. Not once every two years as recommended.
It could be the DTII prompts the tech to perform a 2nd flush after exercising the HCU, much like the ITM ABS Flush Utility. Therefore, it wouldn't be necessary to mention a 2nd flush in the manual. IDK?
It could be the DTII prompts the tech to perform a 2nd flush after exercising the HCU, much like the ITM ABS Flush Utility. Therefore, it wouldn't be necessary to mention a 2nd flush in the manual. IDK?
Interesting. That maybe be unique with ITM. I wonder what the Twin Scan procedure is. Maybe some one that has watched the DT flush or has a Twin Scan can comment. Reading the 2018 manual it does not seem like a 2nd flush is performed. Same with the recall flush procedure. Both mention to perform the procedure again "if the brakes feel spongy". The recall procedure says to use HD part number 41800219, the 12 oz bottle of Platinum brake fluid. And to use 4 ounces of fluid per caliper. 4 oz x 3 calipers = 12 oz. The 2018 procedure also says to use 6 and 3 oz for front calipers, and 3 oz to rear = 12oz.
To be safe Im using Bosch 5.1 that has a service interval of three years. But still doing 2 year interval or less. And exercising the abs a few times a year.
06-12-2020 | 09:43 AM
