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Discussion Starter · #1 ·
I have the S without ARH. When new, upon turning on the ignition the bike would always drop to minimum preload and then gradually pump up to normal ride height. At 450 miles on a 150 mile trip I noticed the ride height was very low and when I stopped I could flat foot either side. eventually the bike started to pump back during riding to a normal height.

Today, I’ve noticed that the bike no longer drops to minimum preload at ignition on, it stays with about 50mm of preload movement on the rear spring. I’m flummoxed, for a supposed automatic system, mine just seems random.
 

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I have the S without ARH. When new, upon turning on the ignition the bike would always drop to minimum preload and then gradually pump up to normal ride height. At 450 miles on a 150 mile trip I noticed the ride height was very low and when I stopped I could flat foot either side. eventually the bike started to pump back during riding to a normal height.

Today, I’ve noticed that the bike no longer drops to minimum preload at ignition on, it stays with about 50mm of preload movement on the rear spring. I’m flummoxed, for a supposed automatic system, mine just seems random.
Thanks very much Patkin you've now got me worried 😉 That is meant to be a light hearted comment but I am worried.
I,ve just been out to my garage ,the bike is on the centre stand and no movement whatsoever. Is that because its on the centre stand. When I have been riding the flashing suspension light does come on so I have only assumed it is working correctly. Mines the PAS by the way.
 

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Discussion Starter · #3 ·
Thanks very much Patkin you've now got me worried 😉 That is meant to be a light hearted comment but I am worried.
I,ve just been out to my garage ,the bike is on the centre stand and no movement whatsoever. Is that because its on the centre stand. When I have been riding the flashing suspension light does come on so I have only assumed it is working correctly. Mines the PAS by the way.
Your bike has ARH? In any case, the suspension preload is not changed with the bike idle, there is no pump. As you ride the bike, the shock movement pumps up pressure. If too much preload, a valve opens to reduce it.
 

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Discussion Starter · #5 ·
Update on this post, my bike still doesn’t change the preload in any noticeable way. Been through first service, nobody knows how this setup is supposed to behave. Most info I’ve got so far was from Showa who seem to be developing a similar system for the aftermarket.
 

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Discussion Starter · #9 ·
MY bike is NON ARH, please bear in mind as you read the following.

Update: I have asked my dealer to formally approach the moco for details of the rear suspension behaviour under normal working conditions. my preload on the rear shock is fixed, there is no change whether i'm solo or whether i'm packing rider and pillion. when solo i'm on tip toes, with pillion I can flat foot and drivers flash me because my headlight is in the air. The whole idea here is to always ensure the correct amount of rider sag, the bike should more or less remain level regardless of load, all controlled by varying the preload on the spring to compensate for increasing rider loadings.

In the load settings menu, there is Auto which i'm guessing takes care of rider sag automatically depending upon the load. then as an alternative you can manually select Rider, Rider and luggage, Rider and Pillion, Rider and Pillion with luggage. as far as im concerned, each scenario should add a bit more preload. Mindful of the fact this bike has no pump to change the preload settings, it should happen as you ride off, gradually pumping up to the correct ride height. {My multistrada has a pump, you can see the bike rear end moving up and down at a standstill as you select different loads.

When i first got my bike, standing at its side and at each switching on of the ignition, the bike would sense it was carrying too much preload (Based upon the previous ride} and release pressure from the shock, lowering the bike. As I rode away it would jack up the preload to compensate for the rider weight. Now nothing ever seems to change, it seems fixed at one preload whatever settings I select from the load menu.
 

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PAS RA1250S Deadwood Green Spokes & ARH
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MY bike is NON ARH, please bear in mind as you read the following.

Update: I have asked my dealer to formally approach the moco for details of the rear suspension behaviour under normal working conditions. my preload on the rear shock is fixed, there is no change whether i'm solo or whether i'm packing rider and pillion. when solo i'm on tip toes, with pillion I can flat foot and drivers flash me because my headlight is in the air. The whole idea here is to always ensure the correct amount of rider sag, the bike should more or less remain level regardless of load, all controlled by varying the preload on the spring to compensate for increasing rider loadings.

In the load settings menu, there is Auto which i'm guessing takes care of rider sag automatically depending upon the load. then as an alternative you can manually select Rider, Rider and luggage, Rider and Pillion, Rider and Pillion with luggage. as far as im concerned, each scenario should add a bit more preload. Mindful of the fact this bike has no pump to change the preload settings, it should happen as you ride off, gradually pumping up to the correct ride height. {My multistrada has a pump, you can see the bike rear end moving up and down at a standstill as you select different loads.

When i first got my bike, standing at its side and at each switching on of the ignition, the bike would sense it was carrying too much preload (Based upon the previous ride} and release pressure from the shock, lowering the bike. As I rode away it would jack up the preload to compensate for the rider weight. Now nothing ever seems to change, it seems fixed at one preload whatever settings I select from the load menu.
I have ARH and the option to adjust preload as per to payload isn't avaliable. I take it adjusts automatically. I've not carried a pillion yet and don't have the lugagge yet either, so nothing to compare with directly. It's also worth noting as an aside that the max payload of a Pan America Special is around 215kg with alloy wheels and around 201kg for the spoked wheels.

Can only suggest you take your bike to the dealer and ask them to check it out?
 

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MY bike is NON ARH, please bear in mind as you read the following.

Update: I have asked my dealer to formally approach the moco for details of the rear suspension behaviour under normal working conditions. my preload on the rear shock is fixed, there is no change whether i'm solo or whether i'm packing rider and pillion. when solo i'm on tip toes, with pillion I can flat foot and drivers flash me because my headlight is in the air. The whole idea here is to always ensure the correct amount of rider sag, the bike should more or less remain level regardless of load, all controlled by varying the preload on the spring to compensate for increasing rider loadings.

In the load settings menu, there is Auto which i'm guessing takes care of rider sag automatically depending upon the load. then as an alternative you can manually select Rider, Rider and luggage, Rider and Pillion, Rider and Pillion with luggage. as far as im concerned, each scenario should add a bit more preload. Mindful of the fact this bike has no pump to change the preload settings, it should happen as you ride off, gradually pumping up to the correct ride height. {My multistrada has a pump, you can see the bike rear end moving up and down at a standstill as you select different loads.

When i first got my bike, standing at its side and at each switching on of the ignition, the bike would sense it was carrying too much preload (Based upon the previous ride} and release pressure from the shock, lowering the bike. As I rode away it would jack up the preload to compensate for the rider weight. Now nothing ever seems to change, it seems fixed at one preload whatever settings I select from the load menu.

Hi did you ever get this sorted ? i have the same issue although mine is at the bottom of the pre load , so low i cant even put the side stand down when sat on the bike ! after 1 month at the dealer it was returned to me fixed , guess what it wasnt ""
 

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Discussion Starter · #13 ·
Hi did you ever get this sorted ? i have the same issue although mine is at the bottom of the pre load , so low i cant even put the side stand down when sat on the bike ! after 1 month at the dealer it was returned to me fixed , guess what it wasnt ""
My bike was in the dealers for over 3 months. First they suspected the BCM then they ordered a new rear shock which as far as I know still didn’t arrive. I demanded and received a new bike in March this year, this was provided by my dealer, HD UK customer service are useless. The new bike has ARH, it still does not provide enough preload with a 60kg passenger. In my opinion the Pan America suspension is a shambles, I may consider the base model next time, meanwhile I have a placed a deposit on a Lowrider ST.
 

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Hi did you ever get this sorted ? i have the same issue although mine is at the bottom of the pre load , so low i cant even put the side stand down when sat on the bike ! after 1 month at the dealer it was returned to me fixed , guess what it wasnt ""
Someone on another forum found an issue with the rear shock wire connector. The connector consists of 2 rows of black and white wires with pin numbers alternating white then black according to the PA wiring diagram, but the actual connector does not match the diagram.
He doesn't state that he is an HD tech but that is the implication and that correcting the wiring pins fixes the ARH issues.

 

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PAS RA1250S Deadwood Green Spokes & ARH
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My bike was in the dealers for over 3 months. First they suspected the BCM then they ordered a new rear shock which as far as I know still didn’t arrive. I demanded and received a new bike in March this year, this was provided by my dealer, HD UK customer service are useless. The new bike has ARH, it still does not provide enough preload with a 60kg passenger. In my opinion the Pan America suspension is a shambles, I may consider the base model next time, meanwhile I have a placed a deposit on a Lowrider ST.
Onwards and upwards! Enjoy the new one when it comes.
 
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