CRF 450 transmission drain plug
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From: whatever on 6 Nov 2009 14:31 I have a '04 and an '08 CRF 450. The '04 drain plug got cross threaded and now there aren't any threads left. I was very careful with the '08 plug (I bought it new a few months ago for $4395 - bam!) and yet I can now feel that the threads are slightly buggered up. It will only get worse from here. Anyone else have this problem with the CRF 450's? I realize the solution to fix the problem is to split the cases but I was hoping some genius here had a better plan as I am much too important to waste time working on these pos's.
From: XR650L_Dave on 6 Nov 2009 14:47 On Nov 6, 2:31 pm, "whatever" <whate...(a)microsoft.com> wrote: > I have a '04 and an '08 CRF 450. The '04 drain plug got cross threaded and > now there aren't any threads left. I was very careful with the '08 plug (I > bought it new a few months ago for $4395 - bam!) and yet I can now feel that > the threads are slightly buggered up. It will only get worse from here.. > > Anyone else have this problem with the CRF 450's? I realize the solution to > fix the problem is to split the cases but I was hoping some genius here had > a better plan as I am much too important to waste time working on these > pos's. With sufficient care, I think you can repair without a case-split. Helicoil, timesert, etc etc. Are the plug threads getting left behind in the hole, or are the hole threads stripping out? I have heard of this happening with aluminum drain plugs, are yours aluminum or steel? Dave
From: whatever on 6 Nov 2009 16:18 I don't think this can be repaired without splitting the cases. The female thread for the transmission drain plug is in the right side case. The bolt goes in from the left side. The bolt is about 3 1/2" long. There's no way to access the threads. I'm considering drilling all the way through the case and putting a nut on the other side. "XR650L_Dave" <spamTHISbrp(a)yahoo.com> wrote in message news:309a07ac-7f87-406b-bd24-0257f3925a6b(a)k4g2000yqb.googlegroups.com... On Nov 6, 2:31 pm, "whatever" <whate...(a)microsoft.com> wrote: > I have a '04 and an '08 CRF 450. The '04 drain plug got cross threaded and > now there aren't any threads left. I was very careful with the '08 plug (I > bought it new a few months ago for $4395 - bam!) and yet I can now feel > that > the threads are slightly buggered up. It will only get worse from here. > > Anyone else have this problem with the CRF 450's? I realize the solution > to > fix the problem is to split the cases but I was hoping some genius here > had > a better plan as I am much too important to waste time working on these > pos's. With sufficient care, I think you can repair without a case-split. Helicoil, timesert, etc etc. Are the plug threads getting left behind in the hole, or are the hole threads stripping out? I have heard of this happening with aluminum drain plugs, are yours aluminum or steel? Dave
From: john on 6 Nov 2009 16:56 drill and tap a size larger, or heli coil the existing hole... http://www.emhart.com/products/helicoil/heliex/design.asp use brake cleaner to clean up threads, then red locktite the heli coil in place be sure and flush a quart of oil after taping to flush out any metal shavings... john -- - No trees were killed to make this message. However, several bushes were hospitalized to make the tagline. "whatever" <whatever(a)microsoft.com> wrote in message news:hd23s4$21t4$1(a)adenine.netfront.net... >I don't think this can be repaired without splitting the cases. The female >thread for the transmission drain plug is in the right side case. The bolt goes >in from the left side. The bolt is about 3 1/2" long. There's no way to access >the threads. > > I'm considering drilling all the way through the case and putting a nut on the > other side. > > > "XR650L_Dave" <spamTHISbrp(a)yahoo.com> wrote in message > news:309a07ac-7f87-406b-bd24-0257f3925a6b(a)k4g2000yqb.googlegroups.com... > On Nov 6, 2:31 pm, "whatever" <whate...(a)microsoft.com> wrote: >> I have a '04 and an '08 CRF 450. The '04 drain plug got cross threaded and >> now there aren't any threads left. I was very careful with the '08 plug (I >> bought it new a few months ago for $4395 - bam!) and yet I can now feel that >> the threads are slightly buggered up. It will only get worse from here. >> >> Anyone else have this problem with the CRF 450's? I realize the solution to >> fix the problem is to split the cases but I was hoping some genius here had >> a better plan as I am much too important to waste time working on these >> pos's. > > With sufficient care, I think you can repair without a case-split. > > Helicoil, timesert, etc etc. > > Are the plug threads getting left behind in the hole, or are the hole > threads stripping out? > > I have heard of this happening with aluminum drain plugs, are yours > aluminum or steel? > > > > Dave >
From: sturd on 6 Nov 2009 17:18
whatever says: > I don't think this can be repaired without splitting the cases. The female > thread for the transmission drain plug is in the right side case. The bolt > goes in from the left side. The bolt is about 3 1/2" long. There's no way > to access the threads. http://www.bikebandit.com/houseofmotorcycles/2004-honda-motorcycle-crf450r/o/m2270 Item 27 in this fiche? Go fast. Take chances. Mike S. |