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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: k-roc on May 10, 2024, 03:26:10 AM

Title: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: k-roc on May 10, 2024, 03:26:10 AM

Hi, I recently got my hands on a 1995 BMW K75RT and need to rebuild the front calipers.  I have been looking at various sources on the internet and a CLYMER Manual.  Removal of the left caliper is straightforward and this is off an ready to be rebuilt.  I am struggling a bit with the right caliper as it appears that one needs to remove the ABS Sensor.  I can get a Torx bit on the more exposed hex bolt, but the other is more hidden. 

Would anyone have so guidance in terms of removing the ABS Sensor so I can rebuild the caliper. 

Also is it possible to spilt the caliper and do the rebuild that way without removing the ABS Sensor.

Thanks so much for any suggestions!

Title: Re: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: Laitch on May 10, 2024, 08:04:32 AM

Have you removed the right-side caliper with the sensor attached?

Title: Re: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: k-roc on May 10, 2024, 08:22:44 AM

Yes, the sensor is still attached, but the caliper assembly with attached ABS sensor wire are supported with a bungee cord, while the brake line and the feed pipe between the right and left are detached from the caliper.  I didn't want to force things.  Will see if I can split the caliper and use the kit while it is on the bike.

Title: Re: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: Laitch on May 10, 2024, 09:13:22 AM

I suggest you decouple that sensor sensor wire. Rehabilitating the caliper on a clean, level, stable surface will improve chances of a successful outcome if you intend to split the caliper. If it were my job, I'd try to find the wire connector, but I'm a by-the-book drudge and rarely in a hurry when working with machinery.

(http://www.motobrick.com/gallery/4/1601-100524090247.png)

Title: Re: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: The Mighty Gryphon on May 10, 2024, 02:31:05 PM

As I recall, the connector is under the tank on the left side. 

Title: Re: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: k-roc on May 18, 2024, 08:52:20 AM

Thanks!  I managed to get the calipers rebuilt.  I rebuilt the right one without disconnecting the abs sensor wire.  Flushed the brake fluid starting at the ABS unit and then the front calipers.

Title: Re: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: frankenduck on May 18, 2024, 08:58:41 AM

 You need either a longer T25 bit or a T25 driver to get the sensor off.

(https://m.media-amazon.com/images/I/51Vh9Ece1jL._AC_SL1500_.jpg)

Title: Re: Help with front caliper rebuild on a 1995 BMW K75 RT - how to remove ABS Sensor
Post by: k-roc on May 18, 2024, 10:26:32 AM

Thanks Frankenduck!