| Author |
 Topic Search  Topic Options
|
coggonobrien 
Orange Level Access
Joined: 14 Nov 2010
Location: Eastern Iowa
Points: 1907
|
 Post Options
 Thanks(0)
 Quote  Reply
 Posted: 24 Jul 2026 at 10:26am |
|
to fit a maroon belly diff into a black belly involved custom touch with a die grinder as I recall
|
 |
|
Sponsored Links
|
|
|
8070nc
Orange Level Access
Joined: 21 Mar 2019
Location: North Carolina
Points: 898
|
Post Options
Thanks(0)
Quote Reply
Posted: 24 Jul 2026 at 11:33am |
|
If thers no oil there to lubricate it dont matter what hardness it is
|
|
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
|
|
DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 23484
|
Post Options
Thanks(0)
Quote Reply
Posted: 24 Jul 2026 at 12:29pm |
|
Two things: #1. Operators do not check the oil often enough. #2. Those sight glasses, while convenient, get foggy and people sometimes think they see oil when they are not.
|
|
8070nc
Orange Level Access
Joined: 21 Mar 2019
Location: North Carolina
Points: 898
|
Post Options
Thanks(0)
Quote Reply
Posted: 24 Jul 2026 at 6:54pm |
|
Mcmaster carr has a hydraulic fluid dye im going to put in mine so im seeing what i think im seeing
|
|
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
|
|
DanielW
Silver Level
Joined: 19 Sep 2022
Location: Ontario
Points: 387
|
Post Options
Thanks(0)
Quote Reply
Posted: 24 Jul 2026 at 7:21pm |
|
Agree on those sight glasses getting foggy. On a neighbour's 7080 I helped him with several years ago (stuck priority spool) I replaced the top one with a drain cock I had from an old HPU. Threads are a standard NPT size if I remember right. That way he'd just crack it open to check - just like the oil level check draincocks in old IH's/Farmalls. Told him to ignore the bottom. At our Northern farm with so many steep hills I always suggest folks overfill their trans, rear ends, etc a little so they don't starve doing long runs on our crazily steep side hills.
Had a few minutes waiting around the barn for a customer to show up, so I drained the fluid and shoved an endoscope down the fill plug. Couldn't get it oriented well enough to see much. Ring, pinion, and carrier 'looked' normal, and I could see where one of the cross shafts was in the carrier and nothing looked horribly awry, but it was a pretty lousy picture.
Might have some time off in a couple weeks, so I'll bring the gantry to that barn in preparation of tearing into it.
Edited by DanielW - 24 Jul 2026 at 7:24pm
|
|
bigal121892
Orange Level
Joined: 05 Jan 2010
Location: Nebraska
Points: 826
|
Post Options
Thanks(0)
Quote Reply
Posted: 25 Jul 2026 at 7:24am |
|
In May of 1981, my Uncle blew a hydraulic line on our 7040; then tried to drive home. Unfortunately for me, it wasn't until August before the spider gear cross shaft actually broke, while I was running it. Naturally I got the blame. When we got it apart, the spider gears chewed through the shaft, until it finally snapped. Without oil, it doesn't take long to break through the hardness, then it's just a matter of time.
|
|
Tbone95
Orange Level Access
Joined: 31 Aug 2012
Location: Michigan
Points: 12495
|
Post Options
Thanks(0)
Quote Reply
Posted: 26 Jul 2026 at 12:03pm |
 DrAllis wrote:
Two things: #1. Operators do not check the oil often enough. #2. Those sight glasses, while convenient, get foggy and people sometimes think they see oil when they are not. |
yeah I’m not sure I’d even call them convenient, more like deceiving. To check oil, I take my top one out, add oil until it comes out, replace the glass and add a a reasonable amount more.
|
|
DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 23484
|
Post Options
Thanks(0)
Quote Reply
Posted: 27 Jul 2026 at 3:37pm |
|
I do fondly remember when changing from the newer style (long 3/8" bolt) to the older overlapping cross spider, the old planetary shafts were too long. This was discovered when the first axle housing assembly was installed and the trumpet housing bolts snugged up by hand (NOT with an impact wrench). So, I used 3 mounting bolts and snugged them up equally, then measured the air gap with feeler gauges and then ground off (DeWalt 4 inch grinder) the inside end of the each sun gear shaft as needed plus another .040" to .050" so it was a loose fit. We used a garden hose to keep things cool on the shafts end. BEWARE !! If this had been assembled with an impact wrench, bad things would have happened.
Edited by DrAllis - 27 Jul 2026 at 3:55pm
|
|
