single pump assembly continued
13.
Place the thrust plate (22) with the slots toward
the face of the shaft end cover (9) over the
bearings (19, 33). Check to see that the pocket
seals in the center slots are still in place. Now
tap the thrust plate into position until a
clearance of approximately 1/32" is left between
the thrust plate (22) and the shaft end cover (9).
Fig. 11 Inserting pocket seal
14.
Into each of the four slots in the thrust plate (22)
insert one of the pocket seals (21) cut in Step
11. Be sure to push each seal all the way into
the slot so that the hidden end is in contact with
the roller bearing race. Then tap the assembled
thrust plate until it rests against the shaft end
cover.
Fig. 12 Trimming pocket seal
15.
Using a razor blade, trim away the excess from
the exposed ends of the pocket seals (21)
square and flush faith the sides of the thrust
plate.
PORT END COVER SUBASSEMBLY
1.
Install the nets roller bearings (37, 40) into the
bores of the port end cover (38)-IF-the used
ones \fs14 were removed.
2.
Lay the thrust plate (28) on the bench and cut
four pocket seals (30) slightly (1/32" to 1/16")
longer than the four outer slots in the thrust
plate. Set them aside for a minute.
3.
Place some heavy grease in the two middle
slots of the thrust plate (28). Cut two pocket
seals (29) 3/16" long. They may run 1/64"
longer but if cut any shorter they must be
discarded.
NOTE
All pocket seals are cut from a strip
obtainable as a service item. They
must be cut with a razor blade as a
pocket knife is not sharp enough.
Insert the seals in the slots.
4.
Place the thrust plate (28) with the slots toward
the face of the port end cover (38) over the
bearings (37, 40). Check to see that the pocket
seals in the center slots are still in place before
tapping the thrust plates into position. Leave a
clearance of approximately 1/32" between the
thrust plate (28) and the port end cover (38).
5.
Into each of the four slots in the thrust plate (28)
insert a pocket seal (30) cut in Step 2. Push
each seal all the way into the slot so that the
hidden end is in contact with the bearing race.
Tap the assembled thrust plate into position
against the face of the port end cover.
6.
Using a razor blade, trim away the excess from
the exposed ends of the pocket seals (30)
square and flush with the sides of the thrust
plate.
FINAL ASSEMBLY
1.
Place the assembled shaft end cover in a vise,
gear side up.
2.
Pour a small amount of oil on face of thrust
plate to provide lubrication of gears. Install the
drive gear (23) on the shaft (6). Stone the gear
ends before installation to remove any minute
burrs.
Fig. 13 Installing drive gear
8
