11
Series 26 - Model 26000 Multiple Gear Pump
4
Install new
seal and new backup gasket into all wear plates.
Note in the middle of the backup gasket a flat section or
support. This area must face away from the wear plate inside
the seal.
5
Place the first new
wear plate, seal, and backup gasket into
gear pocket with seal and backup gasket next to front plate. The
side of the wear plate with the mid section cut-away must be on
the suction side of pump.
6
Dip
gear assemblies into oil and slip first shaft assemblies
into front plate bushings and gears into body pockets.
Reassembly
General Information
It is important that the relationship of the backplate, bodies,
adapters, wear plates, and front plate is correct. You will note
two half moon cavities in the body. The smaller half moon port
cavity must be on the pressure side of the pump. The side of
wear plate with midsection cut out must be on suction side of
pump. Suction side of backplate or adapter is always side with
larger port boss.
Reassembly
1
During the reassembly, replace and lubricate all of the
wear
plates, seals, back-up gaskets, shaft seal and o-rings as new
parts. Lubricate all finished parts and/or assembly surfaces
freely with clean hydraulic fluid during assembly.
2
Install
o-ring in groove of front plate.
3
Apply a thin coat of petroleum jelly or hydraulic oil to both
milled gear pockets of body. Slip body onto front plate with half
moon port cavities in body facing away from front plate. Check
and align the previously scribed line on the exterior of pump
unless input rotation was changed.
Note: If rotation was changed, make sure the small half moon
port cavity is on the pressure side (the plugged side of the front
plate) of the pump.
