For some reason the drain plug on the bottom of my transmission has a really large hex head that Napa auto, ace hardware and the mechanic at the gas station in my little town did not have a big enough hex. My guess is around 18 or 20 mm. Is this some weird retrofit by a prior owner or have other owners encountered this? If this is stock, does anyone know the hex head size to order?
-
Welcome, Guest! We hope you enjoy the excellent technical knowledge, event information and discussions that the BMW MOA forum provides. Some forum content will be hidden from you if you remain logged out. If you want to view all content, please click the 'Log in' button above and enter your BMW MOA username and password. If you are not an MOA member, why not take the time to join the club, so you can enjoy posting on the forum, the BMW Owners News magazine, and all of the discounts and benefits the BMW MOA offers?
-
Beginning April 1st, and running through April 30th, there is a new 2024 BMW MOA Election discussion area within The Club section of the forum. Within this forum area is also a sticky post that provides the ground rules for participating in the Election forum area. Also, the candidates statements are provided. Please read before joining the conversation, because the rules are very specific to maintain civility.
The Election forum is here: Election Forum
transmission drain plug on my 2000 R1100S
- Thread starter mntngrown
- Start date
-
- Tags
- drain plug
6322
Member
Not sure what you’re looking at but the factory trans drain plug for your bike should look like this.
It takes an 8mm hex head wrench. If it’s different it may have been altered. A 19mm is a commonly used BMW wrench size so you may try that. Good luck with getting familiar with your new bike.
It takes an 8mm hex head wrench. If it’s different it may have been altered. A 19mm is a commonly used BMW wrench size so you may try that. Good luck with getting familiar with your new bike.
One last hint...make sure you can get the fill plug out before you drain the transmission. Also, there is no sealing/crush washer on the drain plug so don't look for one.
spot on
I was just gonna ask you about the missing crush washer
I also had a stuck fill plug but applied heat with my soldering iron for awhile and was able to break it open. Found "stubby" hex sockets at O'reillys online but being impatient I jury rigged the drain removal. A fair amount of metal shavings on the magnetic drain plug.
One last hint...make sure you can get the fill plug out before you drain the transmission. Also, there is no sealing/crush washer on the drain plug so don't look for one.
I was just gonna ask you about the missing crush washer
I also had a stuck fill plug but applied heat with my soldering iron for awhile and was able to break it open. Found "stubby" hex sockets at O'reillys online but being impatient I jury rigged the drain removal. A fair amount of metal shavings on the magnetic drain plug.
I've run both 80W-90 and 75W-140 in mine, felt no difference and had no issues. For my money I'd stick with 80W-90 GL5. By the way, if you decide to go the synthetic route, 75W-140 is NOT fine in the final drive.
PS Buy a vice. They are SO handy.
way to innovate.
still waiting to get my e-mail from mega retailer that my stubby hex sockets are ready to pick up and to post if the 14mm with 3/8 drive will fit in the limited space but I must report that the big old drain under the transmission can be loosened in more than one way, (to skin a cat), and does not necessitate tool manufacture with vice and hacksaw or Sawzall or other extreme measures. My smallest pipe wrench did just fine. No damage. YMMV
still waiting to get my e-mail from mega retailer that my stubby hex sockets are ready to pick up and to post if the 14mm with 3/8 drive will fit in the limited space but I must report that the big old drain under the transmission can be loosened in more than one way, (to skin a cat), and does not necessitate tool manufacture with vice and hacksaw or Sawzall or other extreme measures. My smallest pipe wrench did just fine. No damage. YMMV
Similar threads
