85Hokie
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Equipment
BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
D2Cat brought up a good suggestion, 
(LONG POST)
itemize what is needed to install an OIL pressure gauge on a B7100 (or any other tractor) and STILL keep the idiot light!, having paid close attention to what NIW has said about "fittings" being BSPT ,(British) you would think that is strange for the Japanese to use British fittings - but it is quite common :
http://www.ralstoninst.com/news/story/the-difference-between-npt-bspp-and-bspt-seals/
however, damn near all other "fittings" are NPT ......
other than the pitch being slightly off and the tpi being off a smidgen - 27 tpi vs 28 tpi they will almost work together.
However - I really did not want to spend $20 for a freakin adapter! So.....I found this: (still 10 bucks!)
http://www.amazon.com/gp/product/B001DKM4PU?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s01
T fitting :
http://www.amazon.com/gp/product/B006PKKXM4?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00
And gauge:
http://www.amazon.com/gp/product/B00029K00Y?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
And a roll of teflon tape.....
So - I carefully got a small wrench in to get the sending unit wire off, hex with phillips inset, neither was a good tool to get it loose! Thank goodness the pliers were good enough to loosen it. Wire off and the unit came off easily.
Just for S&G's I tried to stick the T adapter (NPT) into the hole in the block, BSPT, I could not get it to start in the thread - even though it should "thread up" to a certain point.
Now the PITA part - my hands could not get the T and adapter and the rest in the tight area, so the engine skirt had to come off - well hell, aint no biggie, 6+ bolts and hold your tongue just right and it came off.
So thinking this thing through - I placed the old sending unit on the T fitting, the T fitting on the adapter (all with teflon) and THEN inserted into the engine block - the fat part of the T needed to spin around the battery hot wire that sits right down in that pathway, so a turn, a push on the wire, another turn, this way ALL THREE fittings spin and tighten with the same amount of force without placing too much on any one fitting. Finally got it snug and turned pointing up.
Now the gauge mounting was simple, however the plastic tubing they give you.......its like playing with a plastic slinky!!!! Aint no way you can fight that freakin coil of plastic without a kink or a kuss !
So - newly bought heat gun came into action, placed the gun on the table on low, pulled the tubing across the face of the gun, slowwwwllly straightened it out to the point where it would be usable.
Found out that I only needed about half of the tubing.....so a snip and I had plenty......now for the ferrules for the tube, well lets open the package of all the nuts and screws and what not......
one ferrule - where is number 2? ...... son of a $#%$#^ - O - I was pissed, a true 1 penny part was gonna keep me from finishing this $##$^$ thing! Looked everywhere - man talk about frustration.........
So picked up the gauge for some crazy reason, rattle in it, WTH? so what to do, shake the hell out of it......something falls on the bench, hits the floor....and pooooof - it too is gone.....never saw it hit the floor, so on hands and knees looking on a plywood floor trying to find this magic part.....nuttin, zip - so.......After about 10 minutes I backed up a few steps and whooop there was something up under the tractor tire - ferrule #2 !!!!! WHo in the sam hell sticks it IN the gauge light socket while the rest is in a plastic sealed bag?????
So - mount the gauge, place nut on one end of the tubing, and the ferrule and tighten the tube to the T fitting - no problem, route the tubing for a semi straight shot to the gauge, repeat the fitting...........
Crank the tractor - looking for leaks, none, tube fills up to a point and then stops, mmmmmm........gauge reads about 60 psi - nice! Grab the wrench and back off the nut at the gauge just a smidge - fluid moves and then I clamp it down.......
SO - double check everything - place the shield back on, and two hours later - I am done!
Reality it would (should take about 30-45 minutes) if I had to do again!
For 30 bucks round trip - money well spent, I'll report back ifn either gauge fails - heard reports of these type of gauges "failing" ......
SO - moving to the lighted end - since I had the temp gauge mounted, I simply tapped in to it's light hot/cold wires.......
so I fire it up again - and son of a beeeeauuucccch - the light on the new gauge works well BUT the other light is now cooked!!! So....back to amazon for bulbs......
another 10 bucks
http://www.amazon.com/gp/product/B00KLHBUJ2?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
but these should be bright! and not burn out!!!!
time will tell!
(LONG POST)
itemize what is needed to install an OIL pressure gauge on a B7100 (or any other tractor) and STILL keep the idiot light!, having paid close attention to what NIW has said about "fittings" being BSPT ,(British) you would think that is strange for the Japanese to use British fittings - but it is quite common :
http://www.ralstoninst.com/news/story/the-difference-between-npt-bspp-and-bspt-seals/
however, damn near all other "fittings" are NPT ......
other than the pitch being slightly off and the tpi being off a smidgen - 27 tpi vs 28 tpi they will almost work together.
However - I really did not want to spend $20 for a freakin adapter! So.....I found this: (still 10 bucks!)
http://www.amazon.com/gp/product/B001DKM4PU?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s01
T fitting :
http://www.amazon.com/gp/product/B006PKKXM4?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00
And gauge:
http://www.amazon.com/gp/product/B00029K00Y?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
And a roll of teflon tape.....
So - I carefully got a small wrench in to get the sending unit wire off, hex with phillips inset, neither was a good tool to get it loose! Thank goodness the pliers were good enough to loosen it. Wire off and the unit came off easily.
Just for S&G's I tried to stick the T adapter (NPT) into the hole in the block, BSPT, I could not get it to start in the thread - even though it should "thread up" to a certain point.
Now the PITA part - my hands could not get the T and adapter and the rest in the tight area, so the engine skirt had to come off - well hell, aint no biggie, 6+ bolts and hold your tongue just right and it came off.
So thinking this thing through - I placed the old sending unit on the T fitting, the T fitting on the adapter (all with teflon) and THEN inserted into the engine block - the fat part of the T needed to spin around the battery hot wire that sits right down in that pathway, so a turn, a push on the wire, another turn, this way ALL THREE fittings spin and tighten with the same amount of force without placing too much on any one fitting. Finally got it snug and turned pointing up.
Now the gauge mounting was simple, however the plastic tubing they give you.......its like playing with a plastic slinky!!!! Aint no way you can fight that freakin coil of plastic without a kink or a kuss !
So - newly bought heat gun came into action, placed the gun on the table on low, pulled the tubing across the face of the gun, slowwwwllly straightened it out to the point where it would be usable.
Found out that I only needed about half of the tubing.....so a snip and I had plenty......now for the ferrules for the tube, well lets open the package of all the nuts and screws and what not......
one ferrule - where is number 2? ...... son of a $#%$#^ - O - I was pissed, a true 1 penny part was gonna keep me from finishing this $##$^$ thing! Looked everywhere - man talk about frustration.........
So picked up the gauge for some crazy reason, rattle in it, WTH? so what to do, shake the hell out of it......something falls on the bench, hits the floor....and pooooof - it too is gone.....never saw it hit the floor, so on hands and knees looking on a plywood floor trying to find this magic part.....nuttin, zip - so.......After about 10 minutes I backed up a few steps and whooop there was something up under the tractor tire - ferrule #2 !!!!! WHo in the sam hell sticks it IN the gauge light socket while the rest is in a plastic sealed bag?????
So - mount the gauge, place nut on one end of the tubing, and the ferrule and tighten the tube to the T fitting - no problem, route the tubing for a semi straight shot to the gauge, repeat the fitting...........
Crank the tractor - looking for leaks, none
, tube fills up to a point and then stops, mmmmmm........gauge reads about 60 psi - nice! Grab the wrench and back off the nut at the gauge just a smidge - fluid moves and then I clamp it down.......SO - double check everything - place the shield back on, and two hours later - I am done!
Reality it would (should take about 30-45 minutes) if I had to do again!
For 30 bucks round trip - money well spent, I'll report back ifn either gauge fails - heard reports of these type of gauges "failing" ......
SO - moving to the lighted end - since I had the temp gauge mounted, I simply tapped in to it's light hot/cold wires.......
so I fire it up again - and son of a beeeeauuucccch - the light on the new gauge works well BUT the other light is now cooked!!! So....back to amazon for bulbs......
another 10 bucks
http://www.amazon.com/gp/product/B00KLHBUJ2?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
but these should be bright! and not burn out!!!!
time will tell!
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