B7100 Hydraulic oil leaking into crankcase
- Thread starter Lil Foot
- Start date
Lil Foot
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Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
Apparently there are more than one variation of the pump.
This exploded view shows (2) figure 8 shaped "hubs" at each end of the pump shafts, sealed by o-rings, #003.
On mine, the figure "8" hub on the shaft seal end of the pump is non-existent, and is one piece with the housing, therefore the o-rings at that end are also non-existent.
On the other end, the view shows two round items between the #003 o-rings and the end cover... these do not exist in my pump.
This exploded view shows (2) figure 8 shaped "hubs" at each end of the pump shafts, sealed by o-rings, #003.
On mine, the figure "8" hub on the shaft seal end of the pump is non-existent, and is one piece with the housing, therefore the o-rings at that end are also non-existent.
On the other end, the view shows two round items between the #003 o-rings and the end cover... these do not exist in my pump.
Last edited:
Lil Foot
Well-known member
Lifetime Member
Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
Lil Foot
Well-known member
Lifetime Member
Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
Russell King
Well-known member
Lifetime Member
Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
There was no need on my repair to try to retain the seal into the case. There were three seals that co fit into the L185 hydraulic pump and the one that went with the tractor’s serial number did not fit at all so I ordered the other two and only one fit into the pump case. The proper seal fit well in the case and while it was tight it did not really require a lot of force to get it installed but enough to know it was not going to come out during operation.
Lil Foot
Well-known member
Lifetime Member
Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
Lil Foot
Well-known member
Lifetime Member
Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
Lil Foot
Well-known member
Lifetime Member
Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
Lil Foot
Well-known member
Lifetime Member
Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
The wrenches I needed for the banjo bolts were almost impossible to find.
(26 & 29mm combo)
A Matco dealer said he could order the 29mm, for $154. No thanks.
Horror Fright had a long combo wrench set that included a 26mm, for $27.
I took a 1 1/8" combo wrench and milled it out to 29mm, machined off the 1 1/8" stamped sizes, and re-stamped it 29mm.
(26 & 29mm combo)
A Matco dealer said he could order the 29mm, for $154. No thanks.
Horror Fright had a long combo wrench set that included a 26mm, for $27.
I took a 1 1/8" combo wrench and milled it out to 29mm, machined off the 1 1/8" stamped sizes, and re-stamped it 29mm.