Flathead A place to talk about Flathead motors.

flathead transmission

Thread Tools
 
Search this Thread
 
  #1  
Old 05-31-2007, 12:06 AM
K54G's Avatar
K54G
K54G is offline
Stage II
Thread Starter
Join Date: May 2007
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default flathead transmission

Hello. I'm restoring a 50th anniversary, 1954 G servi-car & I'm unable to find the transmission drain plug. Does anyone know if there is a drain plug ? The service manualI ordered should be here any day now. (hopefully) Any help would be greatly appreciated. Thanks
 
  #2  
Old 05-31-2007, 01:41 AM
wreck74's Avatar
wreck74
wreck74 is offline
Advanced
Join Date: Jan 2006
Location:
Posts: 95
Likes: 0
Received 0 Likes on 0 Posts
Default RE: flathead transmission

yes, it should be closer to the kicker cover side of the trans, underneath there will be two bolts, ones a drain and the other is a trans to frame bolt or nut. there is more than that but you want the 2nd closest to the kicker cover. hope this helps.
 
  #3  
Old 06-05-2007, 01:25 AM
wildside41's Avatar
wildside41
wildside41 is offline
Advanced
Join Date: Sep 2005
Location:
Posts: 70
Likes: 0
Received 2 Likes on 2 Posts
Default RE: flathead transmission

Are you sure? My 45 has no drain plug. You have to suck the old oil out with a siphon. Crazy I know but thats the way they made them. I think one military manual tells you to tip the bike on its side!
 
  #4  
Old 06-08-2007, 11:56 AM
crampfan's Avatar
crampfan
crampfan is offline
Cruiser
Join Date: May 2007
Posts: 207
Likes: 0
Received 1 Like on 1 Post
Default RE: flathead transmission

Yeah, my 45 did not have a drain plug either. I just rolled er over.
 
  #5  
Old 06-16-2007, 08:26 PM
Oldtimer of NM's Avatar
Oldtimer of NM
Oldtimer of NM is offline
Road Master
Join Date: Jan 2007
Location: East NM
Posts: 770
Likes: 0
Received 2 Likes on 2 Posts
Default RE: flathead transmission

It's only on with 3 bolts and the shifter. I guess they figured it would give you reason to take a close look at the chain if they made you take the gearbox off to tip it up and drain it.
 
  #6  
Old 07-07-2007, 08:21 PM
Jack Hester's Avatar
Jack Hester
Jack Hester is offline
Intermediate
Join Date: Jul 2007
Location: Roxboro, North Carolina
Posts: 46
Likes: 0
Received 2 Likes on 2 Posts
Default RE: flathead transmission

No drain plug on your transmission case. The H-D 45, in it's most common configuration (3-bolt tranny), from late 30's until it's final production year of '73, no means was provided to drain the transmission. I did see one setup where the outside-most mounting stud was drilled and capped. Think this one used a suction pump on the stud, and flushing oil poured in through the fill spout. Stud is not big enough for a very large hole. Anyway, you will have to be creative with your ServiCar. At least the solo models could be rolled over on the side and drained through the fill spout.

Jack
 
  #7  
Old 06-14-2009, 06:03 PM
servi53's Avatar
servi53
servi53 is offline
Stage IV
Join Date: Jan 2006
Location: central il.
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

remove one mounting stud and replace with a bolt of appropriate size and length, bingo quick draining oil plug. George
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JackKnife5
General Topics/Tech Tips
10
07-10-2018 07:28 PM
dave713
Softail Models
6
11-01-2015 01:54 AM
Wishbone68
General Harley Davidson Chat
17
06-30-2014 04:40 PM
fogey47
Tri Glide, RG3 & Freewheeler Models
1
04-20-2013 05:23 PM
fendy4
Shovelhead
3
05-23-2009 11:47 PM



Quick Reply: flathead transmission



All times are GMT -5. The time now is 09:18 AM.