B2150HST Serious Hydraulic Leak

smi889

Member
Aug 25, 2010
35
1
8
Live Oak, Fl., USA
I"ve been losing hydraulic fluid and today I saw where it was coming from. The main line from the pump to the Hydraulic Block where it bolts in is leaking. I haven't tried to to tighten it up yet. I have the repair & parts manual. My question is can you do it without removing it to replace the two copper gaskets? Can't find the copper gasket number in the book. It looks to me like if you remove that plug theshims o-ring relief spring, poppet, and seat relief valve would fall out. Anyone familiar with this part, or repair. Yes I'm going to try and torque it down first. Fluid so darn costly in today's World you don't want to try too many times.
 

TheOldHokie

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Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
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Heres the parts diagram Are you talking about pipe number 010 and nolt 070? That is just a banjo bolt and nothing is going to fall or pop out if you remove it. I would suggest tightening it first to see if that stops the leak. Don't go crazy - you don't want to break it off.....

Dan

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smi889

Member
Aug 25, 2010
35
1
8
Live Oak, Fl., USA
Lucky day! I went out and checked it and the bolt was really loose. Got my impact metrics out but couldn't find the right size. Jumped from 24 to 27. Ran to Lowe's and bought a 25&26 started raining couldn't tell if the fit yet but resorted to adjustable skinny type tool I had and vise grips, tightened up. Hard to get tools in there with the pedal and such are right there. But I did get a deal on Hydraulic oil. $24.99 for 2.5 gallons. Saga continues tomorrow.
 

TheOldHokie

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Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
6,922
3,343
113
Myersville, MD
windyridgefarm.us
Lucky day! I went out and checked it and the bolt was really loose. Got my impact metrics out but couldn't find the right size. Jumped from 24 to 27. Ran to Lowe's and bought a 25&26 started raining couldn't tell if the fit yet but resorted to adjustable skinny type tool I had and vise grips, tightened up. Hard to get tools in there with the pedal and such are right there. But I did get a deal on Hydraulic oil. $24.99 for 2.5 gallons. Saga continues tomorrow.
Just a thought but if it is a BSPP banjo it may not be metric - one inch is 25.4mm.....

Dan
 

TheOldHokie

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Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
6,922
3,343
113
Myersville, MD
windyridgefarm.us
Haven't heard of a BSPP banjo. I have it pretty tight right now so I hope to fire it up today and give it a good test. Thanks!
Kubota hydraulics are typically BSPP banjos. I asked Google and a 1/2" BSPP banjo is 27mm (1-1/16") across flats.

Dan