Graco GT 750, Instructions Manual

Page: 11 / 18

Service
3A5363B 11
For Steps 7 to 12 refer to F
IG
. 13.
7. Slide bearing (11) onto priming rod (8) with the step
side facing the bottom of the pump.
8. Insert foot valve packings (13*) into poppet check
(12).
9. Slide poppet check containing foot valve packings
onto priming rod (8) with beveled edge facing the
bottom of the pump.
10. Apply a thin layer of grease to o-ring (16*) and
install o-ring on foot valve (10).
11. Slide foot valve over poppet check and screw bear-
ing (11) into the foot valve (10).
12. Push foot valve up to the down tube (20) and screw
in place.
13. Slide priming plate (9) (beveled edge up), followed
by washer (28), onto priming rod (8). Insert a
wrench through a slot in the foot valve (10) and
secure it around the flats of the piston shovel rod
(8). While holding the piston shovel rod securely in
place, use a second wrench to tighten jam nut (15*)
to 10 ft-lb (13.5 N•m).
NOTE: Jam nut (15*) should be replaced each time
it is removed from priming rod.
14. Reconnect the pump’s ground wire to a true earth
ground.
F
IG
. 13
11
8
13*
13*
12
16*
20
10
F
IG
. 14
10
9
8
28
15*