rear gear fill plug

[leggman1]

I did a complete oil change on my bike tonight and it all went good except for the fact that I had to use a chisel to break loose the rear gear fill plug. I thought the middle gear fill plug was going to strip as well but it broke loose.
I would like to replace the rear gear fill plug with a new one preferably one of a better design.
I know this must be a common problem so a better way has got to be out there.
Thanks again.
Dave

[cajun31]

buy a new one

http://www.partzilla.com/parts/searc...AFT/parts.html

When you install it make sure you use anti seize on the threads. You are right though, everyone has problems removing these after they have been on with out the anti seize.

[motoman]

Problem with the difficult removal is the thin stainless steel washer.......going against aluminium housings. A hex head shouldered replacement from your local Ace or Tru-Valu specialty drawers is the better option for both middle drive and final drive, IMO.

[TADracer]

Or

Or you could put a copper crush washer from a used spark plug on. Helps removal later on.

[motoman]

Or you could put a copper crush washer from a used spark plug on. Helps removal later on.

With a snug fit on plug threads, just a plain ole' copper washer works good and seals. O.D. of a replacement washer may be a problem, as the final drive fill location casting has bit of a recess. As previously stated, a hexed, shouldered meteric fill plug is the best bet.

[leggman1]

I found just what I needed at my local NAPA auto parts store. Part number
704-1920. Its a M14 x 1.5 drain plug that comes with a nylon washer for about 3 bucks each.
I did have to turn down the flange a bit for the plug that goes into the rear gear housing but only a little.

[TADracer]

Nice replacement!

[bikerphil]

Is there enough room to get a socket or wrench on this?

[motoman]

Is there enough room to get a socket or wrench on this?

Socket or box-end wrench work just fine for rmoval/installation.
BTW, that's exactly the fill plug I reccomended.

[leggman1]

I used a 17mm open end wrench. It doesn't have to be real tight. I also used a little never seez on the threads just for insurance.

[mlew]

They are available also with a 14mm hex. I did the same thing several years ago. I got mine at Advance auto in the oil drain plug section.

[skids]

The nylon washer makes all the difference. I worried about the heat, but after several years, the washer is A-OK. I recommend them for the drain plug as well.

[HalfCentury]

A school of thought is to never disturb the middle drain or fill plugs. The vast majority of the gear fluid is accessed by draining and filling the rear.

[skids]

The nylon washer makes all the difference. I worried about the heat, but after several years, the washer is A-OK. I recommend them for the drain plug as well.

I mean for the crankcase oil...

[skids]

A school of thought is to never disturb the middle drain or fill plugs. The vast majority of the gear fluid is accessed by draining and filling the rear.

They are separate oils and each must be periodically changed.