Rear Braking Sys is Soft

[Jeykash]

I did send my Bike to a Workshop for full servicing and the mechanic told me that they found my rear brake is soft and need to check further on the Master Pump and Rear Brake Caliper.
Any one has face same issue before and what will be the soultion ? Can advice. Saw this in Google search
Tks

 

[infrared]

Jeykash,
There is only one correct process for bleeding the rear brakes, and it starts with bleeding a front brake caliper. Lots of posts here, for that fix. Speedbleeders.com can really help, making it into a one-guy job. They have a fluid catch bag that helps a lot, too. If you have ABS brakes, you can even run the ABS pump, using a jumper, but that step is optional.
It will help you move more brake fluid if you let the brake pedal snap up freely each time, instead of letting the pedal come up slowly. Just sidestep the depressed pedal, instead of raising your foot (which is too slow). Brake pedal pivot lubrication should be done regularly on a schedule, IMHO.
It would help us to help you if you put your FJR year and model in your signature, or with your avatar.

 

[RossKean]

As above (assuming you have a 2006 or newer bike).

The rear brake is linked and has to be bled in the correct order.
The lower right piston pair has a separate bleeder and is actuated with the rear brake pedal. It is NOT connected with the front brake lever.
Bleed the front lower right piston pair first, using the rear brake lever and reservoir.
Bleed the rear brake caliper.
This is a very common issue and is almost always rectified by bleeding in the proper order.
If the brake is still a bit soft, it sometimes helps to hang a weight on the rear brake pedal overnight and then bleed again.

As noted above, make sure that the rear brake pedal has been cleaned and lubricated - cannot be done properly without removing it.
Running the ABS pump during/after flushing the brake circuits is recommended.
https://www.fjrforum.com/threads/test-and-maintain-your-abs-system.136000/

 

[Jeykash]

Jeykash,
There is only one correct process for bleeding the rear brakes, and it starts with bleeding a front brake caliper. Lots of posts here, for that fix. Speedbleeders.com can really help, making it into a one-guy job. They have a fluid catch bag that helps a lot, too. If you have ABS brakes, you can even run the ABS pump, using a jumper, but that step is optional.
It will help you move more brake fluid if you let the brake pedal snap up freely each time, instead of letting the pedal come up slowly. Just sidestep the depressed pedal, instead of raising your foot (which is too slow). Brake pedal pivot lubrication should be done regularly on a schedule, IMHO.
It would help us to help you if you put your FJR year and model in your signature, or with your avatar.

Thanks for sharing your points. Will follow up with the pointers.

My FJR 1300 Is 2016 Model. GEN 4

 

[Jeykash]

As above (assuming you have a 2006 or newer bike).

The rear brake is linked and has to be bled in the correct order.
The lower right piston pair has a separate bleeder and is actuated with the rear brake pedal. It is NOT connected with the front brake lever.
Bleed the front lower right piston pair first, using the rear brake lever and reservoir.
Bleed the rear brake caliper.
This is a very common issue and is almost always rectified by bleeding in the proper order.
If the brake is still a bit soft, it sometimes helps to hang a weight on the rear brake pedal overnight and then bleed again.

As noted above, make sure that the rear brake pedal has been cleaned and lubricated - cannot be done properly without removing it.
Running the ABS pump during/after flushing the brake circuits is recommended.
https://www.fjrforum.com/threads/test-and-maintain-your-abs-system.136000/

Hi Ross ..Thanks for the Pointers. Apprecaite it

 

[SkooterG]

A soft rear brake pedal is unfortunately a fairly common occurrence. Worse on some FJRs as compared to others. On some, it can reoccur within a year.

I have found that simply bleeding the right front caliper part of the rear brake circuit will take care of the soft pedal. Usually, just a press or two of the brake pedal. Why is the front right caliper the problem? I wish I knew. Gen I FJRs never had this problem.

Still, flushing and bleeding the entire hydraulic system as outlined in the above two posts is ideal. The clutch fluid gets nasty in a hurry.

Some will advocate an entire system flush once a year. I would say once every two years at a minimum. And no more than three years at the worst.

 

[Jeykash]

A soft rear brake pedal is unfortunately a fairly common occurrence. Worse on some FJRs as compared to others. On some, it can reoccur within a year.

I have found that simply bleeding the right front caliper part of the rear brake circuit will take care of the soft pedal. Usually, just a press or two of the brake pedal. Why is the front right caliper the problem? I wish I knew. Gen I FJRs never had this problem.

Still, flushing and bleeding the entire hydraulic system as outlined in the above two posts is ideal. The clutch fluid gets nasty in a hurry.

Some will advocate an entire system flush once a year. I would say once every two years at a minimum. And no more than three years at the worst.

Thanks Buddy.. i have done the servicing

 

[Jeykash]

A soft rear brake pedal is unfortunately a fairly common occurrence. Worse on some FJRs as compared to others. On some, it can reoccur within a year.

I have found that simply bleeding the right front caliper part of the rear brake circuit will take care of the soft pedal. Usually, just a press or two of the brake pedal. Why is the front right caliper the problem? I wish I knew. Gen I FJRs never had this problem.

Still, flushing and bleeding the entire hydraulic system as outlined in the above two posts is ideal. The clutch fluid gets nasty in a hurry.

Some will advocate an entire system flush once a year. I would say once every two years at a minimum. And no more than three years at the worst.

 

[Jeykash]

Did a Full Servicing in one of the workshop which cost me SGD$1.175

 

[RossKean]

Are you taking it back to have them re-bleed the rear brake circuit or are you going to do it yourself? It is not difficult. Same with the other service work you had done, you could save a significant amount of money. The work on the forks is the only part that may take some extra tools and experience.
Note: You DON'T want them doing major parts replacement for the soft rear brake. It is very likely not needed.

I do my brake and clutch hydraulics every two years.

 

[rbentnail]

Absolutely, much $$ can be saved with a little DIY. The invoice item that first struck me- Motul Engine oil additive? WTF? IMHO if you need an additive you're using the wrong oil. Man, get a Haynes manual from ebay!!