checking front motor mount?
Thread Starter
|
Road Master
Joined: Jun 2006
Posts: 1,168
Likes: 0
From:
checking front motor mount?
06' fxd , when slowing to a stop i notice what i can only explain as a bad vibration. i usually will use some engine braking when coming to a stop. haven't let the dealer know yet, don't want the bike down with the very little riding time i have left. been doing it for a while now anyway's . anybody know how to properly check the front mount?
Road Master
Joined: Jul 2005
Posts: 916
Likes: 3
From: Mauldin, SC
RE: checking front motor mount?
This seems to be a pretty common complaint with the newer Dynas. My 07 does it, more of a shudder I would call it. I've also got a nasty high frequency vibration from about 2800-3200 rpm, but that's a different story. There's no good way I know of to check the front mount without taking it out and looking to see if the rubber is torn. I've had mine out to look at it, tried shimming it so it wans't stressed when the bolts were tightened, done the alignment proceedure in the manual, even replaced it with one I had left over from an 03. Nothing made any difference. Talk to your dealer, maybe they know something. Don't be surprised if you get the standard answer, though.
Cruiser
Joined: Mar 2006
Posts: 105
Likes: 0
From: Pittsburgh
RE: checking front motor mount?
Sound like the front brake may be it. If u have a manual take front brake apart and check the pistons they could be sticking . It still new have dealer look at it.Dont use it unless u have too, use the back brake and get in some more riding till it gets to cold..
Thread Starter
|
Road Master
Joined: Jun 2006
Posts: 1,168
Likes: 0
From:
RE: checking front motor mount?
cannot get in the habit of using the rear brake unless an emergency stop.
like i said i may have the dealer take a look at it. to date my bike has never been inside the service dept., have done all work myself. if it were the mount, what are the chances the dealer would give me the part and let me do it myself?
like i said i may have the dealer take a look at it. to date my bike has never been inside the service dept., have done all work myself. if it were the mount, what are the chances the dealer would give me the part and let me do it myself?
Cruiser
Joined: Mar 2007
Posts: 101
Likes: 0
From: Paragould, AR
RE: checking front motor mount?
I think i feel the same thing on my 07 St Bob, but i just thought it was part of ownin a harley. Especialy a Dyna.
Trending Topics
Elite HDF Member
Joined: Jul 2005
Posts: 3,968
Likes: 34
From: Lockport Township, IL
RE: checking front motor mount?
My 03 FXD developed a vibration after 18,000 mileswhen decelerating. It was most noticable when decelerating from about 2800 to 2000 RPM. It did not matter if I was on the brakes or not. I assumed it was the front motor mount and changed it. The old one looked fine and the new one made no difference. I then ran the bike in neutral on the side-stand and noticed significang vibration (mirrors shaking like heck) at 2000 to 3000 RPM. Since it vibrates when in neutral and not moving, I ruled out wheel balance, warped rotors, allignment, etc. Problem iseither something in the motor or perhaps the rear motor mount. I will be checking the rear mount this weekend.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Road Master
Joined: Jul 2007
Posts: 791
Likes: 1
From: New Hampshire
RE: checking front motor mount?
My 07 Bob vibrates like a Dyna typically does. Not too bad, just enough to let me know I'm on aDyna! I get a bit of shuddder at decel when applying braking - though I use 50% rear and 50% front, it is not significant at all, but there is "slightly" more shudder if I just use the front. This tells me the motor is stressing forward into the frameas the bike slows from the front. Therubber mounts can only isolate so much.
The whole revelation of shimming the mounts to make for more elasticity never sat right with me, and after knowing a few who actually performed the procedure, it never made any difference. My guess is the person who tried it, may have had something else wrong that got fixed in the process of him engineering the new shim mounts.
Anyway, if it is as severe as you describe, and is more present with front braking, my best guess would be your front mount is suspect. HD should and will inspect it and/or replace it under warranty. Best not to mess with such a key part of the bike's structure. My dealer replaced mine under warranty at the 1K check when the tech thought there was too much vibration at idle. I got it back and didn't notice much of a difference, and the shudder is still there and other little vibes...someone told meearlier that I would end up enjoying them as part of the ride - they were right!
Just have your dealer check it out under warranty. Too minor to lose sleep over.
The whole revelation of shimming the mounts to make for more elasticity never sat right with me, and after knowing a few who actually performed the procedure, it never made any difference. My guess is the person who tried it, may have had something else wrong that got fixed in the process of him engineering the new shim mounts.
Anyway, if it is as severe as you describe, and is more present with front braking, my best guess would be your front mount is suspect. HD should and will inspect it and/or replace it under warranty. Best not to mess with such a key part of the bike's structure. My dealer replaced mine under warranty at the 1K check when the tech thought there was too much vibration at idle. I got it back and didn't notice much of a difference, and the shudder is still there and other little vibes...someone told meearlier that I would end up enjoying them as part of the ride - they were right!
Just have your dealer check it out under warranty. Too minor to lose sleep over.
Outstanding HDF Member
Joined: Sep 2007
Posts: 3,074
Likes: 12
From:
RE: checking front motor mount?
Check all motor mount bolts all three of mine had come loose at some pont also check jiffy stand rubber bumper if it is not positioned correctly it will make a thumping sensation in pegs
Thread
Thread Starter
Forum
Replies
Last Post
Stanger
Dyna Glide Models
59
Apr 11, 2009 10:31 AM
