Reconnect The Pump Lower - Graco Python XL-DA25 Series Instructions And Parts

Repair - Pump Lower
12. Install two new o-rings (118) on the lower fluid cylin-
der (113). Orientation does not matter for this part.
13. Apply anti-seize to both lower fluid cylinder (113)
threads and install into the fluid cylinder (101).
Torque to 100 ft-lb.
14. Inspect and replace the plunger o-ring (111), as
required, and insert the plunger poppet (110) into
the plunger (109) in the direction shown. Apply
medium strength (blue) thread locker to the check
seat (112). Torque to the following values depend-
ing on the size of your pump lower:
Pump Lower Size
075
100
15. Apply petroleum-based lubricant to the fluid plunger
(109) and install into the fluid cylinder (101).
16. Inspect and replace the cylinder o-ring (115), as
required, and insert the cylinder poppet (114) into
the cylinder cap (117) in the direction shown. Install
the check retainer (116). Torque to 10 ft-lb
(14 N•m).
17. Install the cylinder cap (117) onto the lower fluid cyl-
inder (113). Torque to 100 ft-lb (136 N•m).
18. Install the packing nut shim (105) and torque the
packing nut (106) to 20 ft-lb (27 N•m).

Reconnect the Pump Lower

1. Tilt the pneumatic motor (1) onto its back, then hand
turn the pump lower (9) into the adapter plate (6).
Set the pump upright again.
2. Hold the pneumatic motor plunger (109) up with one
hand. With your other hand, put the coupler nut (11)
on the plunger.
18
Torque
40 ft-lb (54 N•m)
90 ft-lb (122 N•m)
206
10
109
F . 10
IG
3. Put the coupling collars (10) into the coupler nut
(11) so the large flanges point upward.
4. Gently let the pneumatic motor plunger (206) drop
onto the fluid plunger (109). Hand tighten the cou-
pler nut (11).
5. Screw the pump lower (9) into the adapter nut (5)
until the cylinder top is flush with the top of the
adapter plate (6).
206
6
F . 11
IG
6. Align the fluid outlet as shown and tighten the jam
nut.
7. Hold the flats of the motor plunger (206) with a
wrench. Use another wrench to tighten the coupler
nut (11). Torque the coupler nut (11) to 75-80 ft-lbs
(102-108 N•m).
8. Hold the drip shield (4) out of the way and replace
the tie rod shield (15).
11
11
109
5
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