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Rear Brake Pressure Down, No Leak?

Arrowbear rider

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Riding for 40 Years
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Yesterday, 21:20
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Arrowbear, CA
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Marcus
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2014 Triumph Thunderbird Commander
I went to ride bike after a cold windy night, below freezing & my rear brake peddle needed to be pumped a couple of times to bring pressure up enough that brake feel was fairly good, better, but then it fell again and I pumped it again; same thing happened. I see no leaks & it's been through cold weather before (I live at 6200 ft) 2nd year in the cold, so does the master just lose a little pressure due to temp swings & I need to add some fluid? Which brand would be best to add to factory fluid?

While I'm on, I want to buy a battery charger, anyone have any experience with the Harbor Freight one.

 

Qship

Riding for 40 Years
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Steve
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'17 Tiger Explorer XRT
Had that same problem with mine a couple years ago when I brought it out from winter hibernation in the spring. Had to be bled and fresh brake fluid. Thought for sure the master cylinder seals were shot. Was a cheap easy fix, BUT had to be done at the dealer as the T'birds need to be hooked up to the computer to open the ABS valves for a proper flush and bleed of the lines.
Triumph recommends flushing of the brake fluid every two years according to the manual, regardless of the mileage.
 

Arrowbear rider

Member
Riding for 40 Years
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Marcus
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2014 Triumph Thunderbird Commander
Thanks, I also need a new rear tire before next season & today it almost started before the battery ran out of enough juice to run starter, still lights up. Going to buy a trickle charger tomorrow & see if it will hold a charge, but since bike is 2014 that wasn't sold until April 2018 to the original owner I'm betting I'll need a battery too; it probably sat empty (I hope) until they prepped the bike for sale.

It had 800 miles on it when I bought it & now has 3600, it had the little rubber stubs on the side of the tires when I bought, now I need a new rear tire. I read here that some have found a better replacement tire?
 

Qship

Riding for 40 Years
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Local time
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Near Fredericton, New Brunswick.
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Steve
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'17 Tiger Explorer XRT
Heard that if you buy the dealer tool/Scan tool software(not $), you can go in and open the ABS valves and bleed them yourself.
 
Last edited:

CarlS

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12 Tiger 800 XC
I went to ride bike after a cold windy night, below freezing & my rear brake peddle needed to be pumped a couple of times to bring pressure up enough that brake feel was fairly good, better, but then it fell again and I pumped it again; same thing happened. I see no leaks & it's been through cold weather before (I live at 6200 ft) 2nd year in the cold, so does the master just lose a little pressure due to temp swings & I need to add some fluid? Which brand would be best to add to factory fluid?

While I'm on, I want to buy a battery charger, anyone have any experience with the Harbor Freight one
I recommend a trickle charger of 1 amp for motorcycle and small engine batteries. 4 amps is a bit much for a maintenance of small batteries.
 

Arrowbear rider

Member
Riding for 40 Years
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Arrowbear, CA
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Marcus
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2014 Triumph Thunderbird Commander
I found a different one on line that has a micro processor that has a motorcycle setting & a voltage readout, temp & etc. I think it also has a battery reconditioning mode and will tell you if the battery is recoverable or dead.
 

CarlS

Charter Member #3
Riding for 62 Years
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Altamonte Springs, Florida
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Carl
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12 Tiger 800 XC
I found a different one on line that has a micro processor that has a motorcycle setting & a voltage readout, temp & etc. I think it also has a battery reconditioning mode and will tell you if the battery is recoverable or dead.
TUP. That sounds good. The one's I have has those features.
 

Dinney

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Riding for 44 Years
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Essex
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BonnevilleT100
Heard that if you buy the dealer tool/Scan tool software(not $), you can go in and open the ABS valves and bleed them yourself.
Easy job with Dealertool and will pay for itself on first use instead of high main dealer cost. Not a five minute job when done properly so you might be surprised at the labour charge! Several instructional videos on YouTube if you search. Reset the maintenance warning symbol as well as a bonus.
 

Arrowbear rider

Member
Riding for 40 Years
Local time
Yesterday, 21:20
Joined
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Messages
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Age
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Location
Arrowbear, CA
First Name
Marcus
My Ride
2014 Triumph Thunderbird Commander
I got the charger & hooked it up & nothing, last week battery lit up the lights & dash, but only turned the started a few times, before clicking, but the lights & dash were still on. I took out the battery to look for a date, no luck, hooked it up to the charger & nothing, checked charger on truck & charger was functioning fine, so I guess my battery completely died in about a week? I'll reinstall today & check if bike lights up or not. Bike being a 2014, that I bought April 2019 I'm betting it's the original.
 

Greyfell

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Stephen
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2008 Triumph Bonneville T100 Ann-Margret
Bike being a 2014, that I bought April 2019 I'm betting it's the original.
Very likely, although (assuming you bought it from a dealer) the dealer could have been proactive and changed an almost 5 year old battery before you took possession.
 
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