1
GEAR PUMP 1.2
Assembly 1300/135
C2000
Lubricate with petroleum jelly
C2001
C2002
C2003
5
Place the new wear plate, seal and back up gasket
into the gear pocket with the seal and back up gasket next
to the front plate. (fig. C2003) The side of the wear plate
with the mid section cut away must be on the suction side
of the pump.
4
Install a new seal and back up gasket to the wear
plate. (fig. C2002) Note in the middle of the back up
gasket a flat section or support. This area must face away
from the wear plate, inside the seal.
It is important that the relationship of the back plate,
body, wear plate and front plate is correct upon
reassembly. Note the 2 (two) half moon shaped cavities in
the body. The smaller half moon port cavity must be on
the pressure side of the gear pump. The side of the wear
plate with the mid section cut out must be on the suction
side of the gear pump. The suction side of the back plate
is always the side with the larger port boss.
1
During reassembly replace the wear plate, seal back
up gasket, shaft seal and O - rings with new parts.
2
Install the O - ring in the groove of the front plate.
(fig. C2000)
3
Apply a thin coat of petroleum jelly to the machined
gear pockets of the body. (fig. C2001) Install the body to
the front plate. Make sure the small half moon shaped
cavity in the body faces the pressure side (plugged side)
of the pump.
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