How to remove chain guard

[Ground Hog]

I have a Trek XM700 which has a full chain guard, which I love. I want to remove my chain which requires the removal of the chain guard. I've searched online and on this forum to no avail. Does anyone on this forum have any experience with full chain guards on bikes with the Bosch performance line motor. I'll try to attach a picture I found online.

 

[steve marino]

It looks like you will have to get a crank puller and pull the right side crank off to get to things.

 

[Alaskan]

It appears that Steve is correct. First the right crank arm has to come off. Then remove the screw at the back end of the chain cover that holds it on the chain stay. Then it will remove in one of two ways. Using a flashlight, look all around it through the gap between the chain cover and the motor cover. If you do not see any slots to stick 2.3mm allen driver into and loosen a screw, then it will rotate off in a clockwise direction. There will be three plastic tabs that fit into three slots in the motor cover. Hold it with two hands, wrapped around the circular part and rotate it off with steady, increasing pressure until it snaps loose and rotates about 3/4" then pull straight out. If it has the screws holding it in place, loosen the screws and pull it strait out.

 

[AguassissiM]

I would just open up the old chain and attach the new one to one end, than just pull it thru the chain guard, reconnect the new chain and be done with it.

 

[steve marino]

"I would just open up the old chain and attach the new one to one end, than just pull it thru the chain guard, reconnect the new chain and be done with it."

Brilliant idea. I love it, and suspect it would work great. My only concern is the unknown state of the chain gears in there. With my bikes, by the time the chain is shot everything is really worn. The rear cassette, the front chain rings, etc. I would want to take a peek at the chain rings in there just to see how things look.

If you can see inside the case with a good light, then AguassisiM's idea is surely the simplest way to go, especially if you don't have a crank puller (although those are inexpensive, and are a good basic tool to have around, along w/ a chain breaker and spoke wrench).

 

[fooferdoggie]

I had to search how to remove it I had the chain pop off and I could not work it out. Then I was thinking how do I clean the ring? Maybe I can get a brush in there?

 

[MeDotOrg]

I have the same setup on my Gazelle Medeo. Today the chain came off the front sproket while I was cleaning it. I was able to squeeze the chain back on by removing the chain guard's rear attachment and pivoting it enought so I could wrestle the chain back on. I can't believe that someone can't design a chain guard that you can remove without owning a crank puller.

By the way, I ordered a crank puller today...sigh...

 

[ki11a]

I have the same setup on my Gazelle Medeo. Today the chain came off the front sproket while I was cleaning it. I was able to squeeze the chain back on by removing the chain guard's rear attachment and pivoting it enought so I could wrestle the chain back on. I can't believe that someone can't design a chain guard that you can remove without owning a crank puller.

By the way, I ordered a crank puller today...sigh...

You gotta love the things you can learn while doing these types of 'repairs' though...I can say for sure I have learned a few good skills that can be used later on.

 

[MeDotOrg]

You gotta love the things you can learn while doing these types of 'repairs' though...I can say for sure I have learned a few good skills that can be used later on.

I get what you're saying. One step at a time, you get to explore the mechanical workings of your bicycle. The situation presents an opportunity to learn, and a lot of bike knowledge builds on itself, one step or procedure at a time.

But if somehow your chain comes off in the front while you are on a ride, you're going to need a crank puller.

 

[ki11a]

I get what you're saying. One step at a time, you get to explore the mechanical workings of your bicycle. The situation presents an opportunity to learn, and a lot of bike knowledge builds on itself, one step or procedure at a time.

But if somehow your chain comes off in the front while you are on a ride, you're going to need a crank puller.

Never considered that with a chain guard, but you are very right.

 

[fooferdoggie]

I get what you're saying. One step at a time, you get to explore the mechanical workings of your bicycle. The situation presents an opportunity to learn, and a lot of bike knowledge builds on itself, one step or procedure at a time.

But if somehow your chain comes off in the front while you are on a ride, you're going to need a crank puller.

on mine I could just get my finger in there to lift the chain back on but it was a pain.once I went this way the chain almost never comes off.

 

[Alaskan]

This is the best crank puller tool I have found

Park Tool CCP-22 Crank Puller | eBay

Find many great new & used options and get the best deals for Park Tool CCP-22 Crank Puller at the best online prices at eBay! Free shipping for many products!

ebay.us

Also, If you are going to replace the front chain ring, I highly recommend the Sram, it is the best built and most durable that I know of. They are available in 14, 16 & 18 tooth versions. Go more teeth for speed and fewer teeth for climbing power.

SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel | eBay

Find many great new & used options and get the best deals for SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel at the best online prices at eBay! Free shipping for many products!

ebay.us

 

[fooferdoggie]

This is the best crank puller tool I have found

Park Tool CCP-22 Crank Puller | eBay

Find many great new & used options and get the best deals for Park Tool CCP-22 Crank Puller at the best online prices at eBay! Free shipping for many products!

ebay.us

Also, If you are going to replace the front chain ring, I highly recommend the Sram, it is the best built and most durable that I know of. They are available in 14, 16 & 18 tooth versions. Go more teeth for speed and fewer teeth for climbing power.

SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel | eBay

Find many great new & used options and get the best deals for SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel at the best online prices at eBay! Free shipping for many products!

ebay.us

the bike above has a full size chainring. you need another tool to replace the small chainrings.

 

[Alaskan]

the bike above has a full size chainring. you need another tool to replace the small c hainrings.

The Trek in the first post of this thread has the older small chain ring as does the bike in your recent post with the red Miranda chain guard. Besides the crank remover works to remove the cranks from all Bosch equipped bikes with the older small chainrings or the newer larger ones.

To remove the threaded lock ring off of the smaller chain ring, after you have removed the crank you need this one (and a 1/2" ratchet):

Park Tool LRT-1 Bosch Gen 2 Chainring Lockring Tool 3/8 Drive | eBay

Find many great new & used options and get the best deals for Park Tool LRT-1 Bosch Gen 2 Chainring Lockring Tool 3/8 Drive at the best online prices at eBay! Free shipping for many products!

ebay.us

 

[fooferdoggie]

The Trek in the first post of this thread has the older small chain ring as does the bike in your recent post with the red Miranda chain guard. Besides the crank remover works to remove the cranks from all Bosch equipped bikes with the older small chainrings or the newer larger ones.

To remove the threaded lock ring off of the smaller chain ring, after you have removed the crank you need this one (and a 1/2" ratchet):

Park Tool LRT-1 Bosch Gen 2 Chainring Lockring Tool 3/8 Drive | eBay

Find many great new & used options and get the best deals for Park Tool LRT-1 Bosch Gen 2 Chainring Lockring Tool 3/8 Drive at the best online prices at eBay! Free shipping for many products!

ebay.us

Itrhought it was the larger chain ring the size of the guard threw me off. yep I have one a bit of a pain to to use but this setup I have not had the chain fall off

 

[MeDotOrg]

This is the best crank puller tool I have found

Park Tool CCP-22 Crank Puller | eBay

Find many great new & used options and get the best deals for Park Tool CCP-22 Crank Puller at the best online prices at eBay! Free shipping for many products!

ebay.us

Also, If you are going to replace the front chain ring, I highly recommend the Sram, it is the best built and most durable that I know of. They are available in 14, 16 & 18 tooth versions. Go more teeth for speed and fewer teeth for climbing power.

SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel | eBay

Find many great new & used options and get the best deals for SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel at the best online prices at eBay! Free shipping for many products!

ebay.us

I already ordered the Park Tool CWP-7. Hope it works! It was supposed to arrive today. Should be here tomorrow. I'll post a followup. Thanks for the tip on the SRAM sprocket. I've got nearly 1400 miles on the chain, so a replacement is imminent. This is my first ebike. I guess with the torque they eat chains. I think by the time I buy my next bike there will be some more internal drives with Gates belts. I'm looking forward to that.

 

[ki11a]

what is this text for ants?!?!