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Replace Shimano MT500 Caliper

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1

I'm not finding a huge amount of information online about doing a caliper (only) replacement. My rear Shimano MT500 is having issues and I urgently need to get it working, therefore I've purchased a brand new caliper of the same model.

I can't seem to find information on best practices on how to do it though.

Should this be as straight forward as draining (?) the oil from the brake system, unscrew the rear caliper from the hose, attach new caliper to the hose and run Shimano oil through the system/bleed?

Are there any gotchas to look out for? Can I expect the unscrewing the hose/attaching the hose to be a simple process?

shimano disc-brake hydraulic-disc-brake

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asked 9 hours ago

jblzjblz

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1

I'm not finding a huge amount of information online about doing a caliper (only) replacement. My rear Shimano MT500 is having issues and I urgently need to get it working, therefore I've purchased a brand new caliper of the same model.

I can't seem to find information on best practices on how to do it though.

Should this be as straight forward as draining (?) the oil from the brake system, unscrew the rear caliper from the hose, attach new caliper to the hose and run Shimano oil through the system/bleed?

Are there any gotchas to look out for? Can I expect the unscrewing the hose/attaching the hose to be a simple process?

shimano disc-brake hydraulic-disc-brake

share|improve this question

asked 9 hours ago

jblzjblz

10844 bronze badges

New contributor

jblz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment
 | 

I'm not finding a huge amount of information online about doing a caliper (only) replacement. My rear Shimano MT500 is having issues and I urgently need to get it working, therefore I've purchased a brand new caliper of the same model.

I can't seem to find information on best practices on how to do it though.

Should this be as straight forward as draining (?) the oil from the brake system, unscrew the rear caliper from the hose, attach new caliper to the hose and run Shimano oil through the system/bleed?

Are there any gotchas to look out for? Can I expect the unscrewing the hose/attaching the hose to be a simple process?

shimano disc-brake hydraulic-disc-brake

share|improve this question

asked 9 hours ago

jblzjblz

10844 bronze badges

New contributor

jblz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 9 hours ago

jblzjblz

10844 bronze badges

New contributor

jblz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 9 hours ago

jblzjblz

10844 bronze badges

New contributor

jblz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 9 hours ago

jblzjblz

10844 bronze badges

New contributor

jblz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 9 hours ago

jblzjblz

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2 Answers
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3

Normally when you disconnect a brake hose (eg to install a new caliper), you are well advised to replace the 'olive' with a fresh one to ensure a quality seal. Shortening the hose also needs a new connector insert but you don't say you're doing that in the question.

I would treat this as an installation of a brake and follow the relevant steps in the dealer's manual, noting that Shimano states that "This dealer's manual is intended primarily for use by professional bicycle mechanics."

You shouldn't lose much fluid out of the hose if you disconnect only one end at a time and don't squeeze the lever, then I would give it a bleed as per manufacturer's instructions to remove any air. I don't know if the new caliper came with any fluid in, but by doing a full install and bleed it will fill up and purge any air you might introduce.

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answered 6 hours ago

SwiftySwifty

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1

You won't (shouldn't even need to do that). If you remove the caliper bolts, then undo the crows foot bolt, only a small amount of fluid will leak out.
You would then reattach the hydraulic cable directly to the port on the new caliper, and then refit the caliper and pads (if you replaced them too).

If you do need to bleed anything, open the bleed port screw on the lever with the syringe fitted and a small amount of brake fluid in the syringe, then just flick the lever a few times until normal pressure is restored. Do this with the pad blocks still in place on the new caliper.

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answered 6 hours ago

Lucero79Lucero79

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3

Normally when you disconnect a brake hose (eg to install a new caliper), you are well advised to replace the 'olive' with a fresh one to ensure a quality seal. Shortening the hose also needs a new connector insert but you don't say you're doing that in the question.

I would treat this as an installation of a brake and follow the relevant steps in the dealer's manual, noting that Shimano states that "This dealer's manual is intended primarily for use by professional bicycle mechanics."

You shouldn't lose much fluid out of the hose if you disconnect only one end at a time and don't squeeze the lever, then I would give it a bleed as per manufacturer's instructions to remove any air. I don't know if the new caliper came with any fluid in, but by doing a full install and bleed it will fill up and purge any air you might introduce.

share|improve this answer

answered 6 hours ago

SwiftySwifty

4,75722 gold badges1010 silver badges3535 bronze badges

add a comment
 | 

3

Normally when you disconnect a brake hose (eg to install a new caliper), you are well advised to replace the 'olive' with a fresh one to ensure a quality seal. Shortening the hose also needs a new connector insert but you don't say you're doing that in the question.

I would treat this as an installation of a brake and follow the relevant steps in the dealer's manual, noting that Shimano states that "This dealer's manual is intended primarily for use by professional bicycle mechanics."

You shouldn't lose much fluid out of the hose if you disconnect only one end at a time and don't squeeze the lever, then I would give it a bleed as per manufacturer's instructions to remove any air. I don't know if the new caliper came with any fluid in, but by doing a full install and bleed it will fill up and purge any air you might introduce.

share|improve this answer

answered 6 hours ago

SwiftySwifty

4,75722 gold badges1010 silver badges3535 bronze badges

add a comment
 | 

Normally when you disconnect a brake hose (eg to install a new caliper), you are well advised to replace the 'olive' with a fresh one to ensure a quality seal. Shortening the hose also needs a new connector insert but you don't say you're doing that in the question.

I would treat this as an installation of a brake and follow the relevant steps in the dealer's manual, noting that Shimano states that "This dealer's manual is intended primarily for use by professional bicycle mechanics."

You shouldn't lose much fluid out of the hose if you disconnect only one end at a time and don't squeeze the lever, then I would give it a bleed as per manufacturer's instructions to remove any air. I don't know if the new caliper came with any fluid in, but by doing a full install and bleed it will fill up and purge any air you might introduce.

share|improve this answer

answered 6 hours ago

SwiftySwifty

4,75722 gold badges1010 silver badges3535 bronze badges

share|improve this answer

answered 6 hours ago

SwiftySwifty

4,75722 gold badges1010 silver badges3535 bronze badges

answered 6 hours ago

SwiftySwifty

4,75722 gold badges1010 silver badges3535 bronze badges

answered 6 hours ago

SwiftySwifty

4,75722 gold badges1010 silver badges3535 bronze badges

1

You won't (shouldn't even need to do that). If you remove the caliper bolts, then undo the crows foot bolt, only a small amount of fluid will leak out.
You would then reattach the hydraulic cable directly to the port on the new caliper, and then refit the caliper and pads (if you replaced them too).

If you do need to bleed anything, open the bleed port screw on the lever with the syringe fitted and a small amount of brake fluid in the syringe, then just flick the lever a few times until normal pressure is restored. Do this with the pad blocks still in place on the new caliper.

share|improve this answer

answered 6 hours ago

Lucero79Lucero79

5333 bronze badges

add a comment
 | 

1

You won't (shouldn't even need to do that). If you remove the caliper bolts, then undo the crows foot bolt, only a small amount of fluid will leak out.
You would then reattach the hydraulic cable directly to the port on the new caliper, and then refit the caliper and pads (if you replaced them too).

If you do need to bleed anything, open the bleed port screw on the lever with the syringe fitted and a small amount of brake fluid in the syringe, then just flick the lever a few times until normal pressure is restored. Do this with the pad blocks still in place on the new caliper.

share|improve this answer

answered 6 hours ago

Lucero79Lucero79

5333 bronze badges

add a comment
 | 

You won't (shouldn't even need to do that). If you remove the caliper bolts, then undo the crows foot bolt, only a small amount of fluid will leak out.
You would then reattach the hydraulic cable directly to the port on the new caliper, and then refit the caliper and pads (if you replaced them too).

If you do need to bleed anything, open the bleed port screw on the lever with the syringe fitted and a small amount of brake fluid in the syringe, then just flick the lever a few times until normal pressure is restored. Do this with the pad blocks still in place on the new caliper.

share|improve this answer

answered 6 hours ago

Lucero79Lucero79

5333 bronze badges

share|improve this answer

answered 6 hours ago

Lucero79Lucero79

5333 bronze badges

answered 6 hours ago

Lucero79Lucero79

5333 bronze badges

answered 6 hours ago

Lucero79Lucero79

5333 bronze badges