Need Help removing fuel tank on 92 K100RS - K-Bikes.com - Excellence in Motion
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old Apr 1st, 2014, 6:56 pm Thread Starter
Noob
 
Join Date: Apr 2014
Location: Monroe, NC, USA
Posts: 4
Need Help removing fuel tank on 92 K100RS

Hey guys,
I am new to BMW's and this forum.
I bought a 1992 K100rs. I need to replace the cooling fan, but the Clymer manual is useless. I do not want to damage anything, so I'd love a little help. The Clymer says to release pressure on the fuel system and remove various fuel hoses, then remove the bolt at the rear of the tank under the seat. I do not see a mounting bolt ANYWHERE! At the rear of the tank, underneath I see what appears to be two rubber bumpers between the frame rails and the tank. ? I know something is holding the seat down but I do not see anything. I also plam to replace the water / oil pump, if the very slight oil leakage into the cooling system does not stop.
Thanks for any and all input!

Tony P
Monroe, NC
Attached Thumbnails
Click image for larger version

Name:	smK100rs.jpg
Views:	31
Size:	145.9 KB
ID:	15697  
Tonyp884 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old Apr 2nd, 2014, 9:17 am
Senior Member
 
Join Date: Sep 2006
Location: Austin, Texas, USA
Posts: 190
Your manual is describing the early method of tank mounting on the K100. The tank on your '92 is mounted with two "pegs" at the rear of the tank into grommets in the frame. The pegs are held in place with "E" clips under the grommets. After the clips are removed, you pull up on the rear to release it. From my experience, removing and installing isn't easy.

The seat release is on the left side, below the seat about half way back. It is lockable so you may have to unlock with the key. Push inward to release the seat to hinge up. You remove the seat by removing three e clips from the pivot points of the seat. You may have to remove the side covers for better access. They come off by pulling the forward mount peg out of the tank grommet, pushing the cover down to release a hook in the center, then forward to release the rear peg.

Frank

'17 R1200RS, 2 yrs. 27,000 mi.
'16 R1200RS, 18 mo. 28,000 mi. (gone)
'03 R1100S Boxer Cup Replika 6/200
'85 K100/1100RS, 34 yrs. 326,000 mi.
'05 R1200ST, 8 yrs. 57,400 mi.-3rd deer killed it.
'11 R1200RT, 2 yrs. 30,000 mi. (gone)
'99 R1100S, 2 yrs. 15,000 mi. (gone)
'96 Ducati 900SS/SP, 12 yrs. (gone)
500,000+ BMW miles

Last edited by duckbubbles; Apr 2nd, 2014 at 9:24 am.
duckbubbles is online now  
post #3 of 9 (permalink) Old Apr 2nd, 2014, 11:35 am
PsyKotic Waterfowl
 
Join Date: Aug 2006
Location: Seattle, WA,
Posts: 1,328
You don't need to remove the tank to replace the radiator fan.

You need to drain the cooling system and remove the radiator front the front.
FlyingDuck is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old Apr 2nd, 2014, 12:33 pm
Senior Member
 
Join Date: Sep 2006
Location: Austin, Texas, USA
Posts: 190
You'll have to remove the tank (at least mostly) to service the cooling system later.

I, too, recommend removing the radiator to do this job.

Frank

'17 R1200RS, 2 yrs. 27,000 mi.
'16 R1200RS, 18 mo. 28,000 mi. (gone)
'03 R1100S Boxer Cup Replika 6/200
'85 K100/1100RS, 34 yrs. 326,000 mi.
'05 R1200ST, 8 yrs. 57,400 mi.-3rd deer killed it.
'11 R1200RT, 2 yrs. 30,000 mi. (gone)
'99 R1100S, 2 yrs. 15,000 mi. (gone)
'96 Ducati 900SS/SP, 12 yrs. (gone)
500,000+ BMW miles
duckbubbles is online now  
post #5 of 9 (permalink) Old Apr 2nd, 2014, 5:55 pm Thread Starter
Noob
 
Join Date: Apr 2014
Location: Monroe, NC, USA
Posts: 4
Thanks guys for all of the great advise. I love this bike, and I do not want to force anything from lack of knowledge. This Clymer manual is not helping. The Clymer says to remove the bodywork, drain the coolant, depressurize and remove the fuel tank,.......I am sure you guys are a much better source of information. The fellow I bought the bike from has a set of BMW manuals but he cannot find them ...yet!
Tony P
Tonyp884 is offline  
post #6 of 9 (permalink) Old Apr 3rd, 2014, 12:56 am
PsyKotic Waterfowl
 
Join Date: Aug 2006
Location: Seattle, WA,
Posts: 1,328
Quote:
Originally Posted by Tonyp884
Thanks guys for all of the great advise. I love this bike, and I do not want to force anything from lack of knowledge. This Clymer manual is not helping. The Clymer says to remove the bodywork, drain the coolant, depressurize and remove the fuel tank,.......I am sure you guys are a much better source of information. The fellow I bought the bike from has a set of BMW manuals but he cannot find them ...yet!
Tony P

If you need BMW manuals I have them here: http://sn.im/kbiketech
FlyingDuck is offline  
post #7 of 9 (permalink) Old Apr 3rd, 2014, 11:06 am
Senior Member
 
Join Date: Sep 2006
Location: Austin, Texas, USA
Posts: 190
You need to remove all the lower bodywork/fairings but not the upper fairing. Keep track of what kind of screw goes where as it comes apart. The coolant drain is on the bottom of the water pump- if you have a temp gauge it will be the temp sensor mounted in the same place.

If memory serves- there is one bolt at the top that holds the radiator in. You of course have to disconnect all the hoses (3?) and the fan connector. The rad tilts forward from the top and comes off two lower mounting lugs.

Take your time, pay attention to how things go together and don't force anything .

Frank

'17 R1200RS, 2 yrs. 27,000 mi.
'16 R1200RS, 18 mo. 28,000 mi. (gone)
'03 R1100S Boxer Cup Replika 6/200
'85 K100/1100RS, 34 yrs. 326,000 mi.
'05 R1200ST, 8 yrs. 57,400 mi.-3rd deer killed it.
'11 R1200RT, 2 yrs. 30,000 mi. (gone)
'99 R1100S, 2 yrs. 15,000 mi. (gone)
'96 Ducati 900SS/SP, 12 yrs. (gone)
500,000+ BMW miles
duckbubbles is online now  
post #8 of 9 (permalink) Old Apr 3rd, 2014, 6:03 pm
Member
 
Join Date: Dec 2012
Location: York, PA, United States
Posts: 106
If you have a phone with a camera, use it. I suggest setting up an account on Photobucket or similar site. Take the shot, upload it and disassemble. Then if you have a question on reassembly, go to your albums and have a look.

A tablet with a camera is better. You don't need to upload to Photobucket. The photo is there for you to grab.

That is how I do it.

I also use a notebook and list the order in which I disassembled. If necessary, I make labeled diagrams to help. For hardware, I use cupcake pans. I put a paper label in each cup telling me what the items go to, the number of the step in the notebook and the number of pieces in that cup.
97tiger885 is offline  
post #9 of 9 (permalink) Old Apr 3rd, 2014, 6:46 pm
PsyKotic Waterfowl
 
Join Date: Aug 2006
Location: Seattle, WA,
Posts: 1,328
Though it's probably not advisable if it's your first time in, it is possible to replace the fan without draining/disconnecting the cooling system. I've done it before.

CAUTION: DO NOT use he-man torque when reinstalling the temp sensor in the bottom of the water pump. It will teat apart if you do. DAMHIK.
FlyingDuck is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the K-Bikes.com - Excellence in Motion forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Absolutely the most detailed description of the K1200S I've come across... sinc K12/1300S 20 Jul 19th, 2014 9:04 am
2006 BMW K1200 GT Fuel Tank Quick Disconnects kbmwrs K12/1300GT (Next Gen) 2 Nov 26th, 2013 3:19 pm
2006 BMW K1200 GT Fuel Tank removal kbmwrs K12/1300GT (Next Gen) 1 Nov 26th, 2013 10:30 am
Rear brake light switch dodgeem K12/1300R/R-Sport 3 Sep 8th, 2013 5:32 pm
Interesting read on returnless type fuel systems JCW K12/1300R/R-Sport 2 May 17th, 2011 1:19 am

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome