Oil cooler 62868-99A sending unit location stat operation questions for 02 FLTR
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Road Captain
Joined: Jan 2007
Posts: 521
Likes: 2
From: Weeki Wachee, FL
Oil cooler 62868-99A sending unit location stat operation questions for 02 FLTR
Hey guys noticed an oil leak from one of the lines going to the stat, and got me thinking about a few things. This is the older cooler with hoses that route back to rear of engine. I also have the oil temp gauge in place of air temp. I bought the bike this way.
1) What's the plug for on the stat. Is it for draining oil?
2) Should I relocate the oil temp sending unit next to the oil drain plug? Read the archives awhile back and believe this to be the preferred location.
3) How can you tell if the stat is operating correctly? Is it a thermal spring?
4) I also remember reading the archives that you don't need the chrome cover to hide the oil lines, and the stock cover will work just fine. Is this true? I would like to remove the chrome cover.
5) If I relocate the sending unit next to the drain plug. What is the size or part number of adapter.
Thanks in advance guys!
1) What's the plug for on the stat. Is it for draining oil?
2) Should I relocate the oil temp sending unit next to the oil drain plug? Read the archives awhile back and believe this to be the preferred location.
3) How can you tell if the stat is operating correctly? Is it a thermal spring?
4) I also remember reading the archives that you don't need the chrome cover to hide the oil lines, and the stock cover will work just fine. Is this true? I would like to remove the chrome cover.
5) If I relocate the sending unit next to the drain plug. What is the size or part number of adapter.
Thanks in advance guys!
Last edited by chevdude; Aug 9, 2014 at 11:46 AM.
Seasoned HDF Member
Joined: Mar 2010
Posts: 19,978
Likes: 6,074
From: Florida
First of all--don't mess with that plug--it is a pipe fitting, & it is very easy to crack the case monkeying around with it.
I wouldn't even bother with a temp guage-- it's just another source of worry & distraction,& you'll know when it is too hot.
I wouldn't even bother with a temp guage-- it's just another source of worry & distraction,& you'll know when it is too hot.
Road Warrior
Joined: Dec 2008
Posts: 1,476
Likes: 23
From: Summit, Mississippi
The early TC oil coolers were something that had to be designed by either Harley Davidson or Rube Goldberg (for those of you old enough to remember who he is). Since....the "wafer" was invented, you can make all your plumbing that was intercepted at the engine-to-tranny junction "regular" (stock). You may be surprised what the dealer wants for those little bent rubber hoses.....or maybe it would not surprise you. The original hose was formed to fit that 90-degree bend and you can't simply substitute another section of hose. I would rip all that mess out, get a wafer that fits between your filter and filter mount (which contains a built-in stat).You can use the cooler you have on there now or use the crash-bars as a heat-sink, but that has to be plumbed a certain way to prevent drain-back and dry starts on a TC. If what I understand you have is what I think it is......you have a mess of plumbing under the bike that should be trashed, by using the wafer. You can then put your stock cover back on. I don't recall the year, but MOCO joins the engine-to-tranny connection with O-rings now and you can't get to them anymore to plumb a cooler in there anyway.
I agree with dickey....trash the stupid oil temp. gauge. All it may do is scare you to death setting in traffic anyway.
I agree with dickey....trash the stupid oil temp. gauge. All it may do is scare you to death setting in traffic anyway.
Banned
Joined: Apr 2012
Posts: 648
Likes: 9
From: WV
Hey guys noticed an oil leak from one of the lines going to the stat, and got me thinking about a few things. This is the older cooler with hoses that route back to rear of engine. I also have the oil temp gauge in place of air temp. I bought the bike this way.
1) What's the plug for on the stat. Is it for draining oil?
2) Should I relocate the oil temp sending unit next to the oil drain plug? Read the archives awhile back and believe this to be the preferred location.
3) How can you tell if the stat is operating correctly? Is it a thermal spring?
4) I also remember reading the archives that you don't need the chrome cover to hide the oil lines, and the stock cover will work just fine. Is this true? I would like to remove the chrome cover.
5) If I relocate the sending unit next to the drain plug. What is the size or part number of adapter.
Thanks in advance guys!
1) What's the plug for on the stat. Is it for draining oil?
2) Should I relocate the oil temp sending unit next to the oil drain plug? Read the archives awhile back and believe this to be the preferred location.
3) How can you tell if the stat is operating correctly? Is it a thermal spring?
4) I also remember reading the archives that you don't need the chrome cover to hide the oil lines, and the stock cover will work just fine. Is this true? I would like to remove the chrome cover.
5) If I relocate the sending unit next to the drain plug. What is the size or part number of adapter.
Thanks in advance guys!
2) Where is it located now? if its in the supply line between the engine and transmission that's the same reading you will get from the pan.
3) Basic function;the oil cooler core will start to get very hot, validating stat actuation temp; have to build a test stand with some heated oil, external thermometer, and a precision caliper.
4) oil cooler covers impede airflow
5) 1/4" NPT to 1/8" NPT reducer bushing, any hardware store
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Road Captain
Joined: Jan 2007
Posts: 521
Likes: 2
From: Weeki Wachee, FL
Thanks guys.......I don't look at the temp gauge much, just want it to work since I already have it.
Sounds like the wafer is the way to go so I can get rid of the hose mess, and remove the chrome cover.
Can anyone recommend an aftermarket supplier?
Sounds like the wafer is the way to go so I can get rid of the hose mess, and remove the chrome cover.
Can anyone recommend an aftermarket supplier?
Road Warrior
Joined: Dec 2008
Posts: 1,476
Likes: 23
From: Summit, Mississippi
Keep a look-out on e-bay. They show up there from time-to-time. The early ones were real thick. You can get one that is much thinner. Some folks pin them to the filter bracket with a roll-pin so they won't turn when you install/remove the filter, but that's not always necessary. I suppose the dealership carries them, but you have to pay the Harley tax.
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Road Captain
Joined: Jan 2007
Posts: 521
Likes: 2
From: Weeki Wachee, FL
Keep a look-out on e-bay. They show up there from time-to-time. The early ones were real thick. You can get one that is much thinner. Some folks pin them to the filter bracket with a roll-pin so they won't turn when you install/remove the filter, but that's not always necessary. I suppose the dealership carries them, but you have to pay the Harley tax.
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