Hyundai 35DS-7 Operation Manual page 182

(7) Insert the drive end of the drive shaft
through the bearing block with the seal
side down, and the open side of the E-
seal pointing to the intake side of the
pump.
(8) Install the seal sleeve over the drive shaft
and carefully slide the drive shaft through
the shaft seal. Remove the seal sleeve
from shaft.
(9) Install the idler gear shaft in the remaining
position in the bearing block. Apply a light
coat of clean oil to the face of the drive
and idler gears.
(10) Pick up the rear bearing block, with seal
side up and with open end of the E-seal
facing the intake side of the pump, place
over the drive and idler gear shafts.
(11) Install two dowel pins in the holes in the
mounting flange or two long dowel pins
through gear housing if pump is a multiple
section pump.
(12) To install the O-rings in the gear housing,
apply a light coating of petroleum jelly in
the grooves on both sides of the gear
housing.
Also coat the new O-ring and install them
in the grooves.
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PUMP 20
PUMP 21
PUMP 22