Graco Hydra-Spray EH 433 GT Series Instructions-Parts List Manual page 17

Reassembly
NOTE: For this procedure, see Fig 10 for Model
208–916 and Fig 11 for Model 221–072
1. For Pump 208–916, with the lips of v–pack-
ings facing DOWN, install these parts in the
pump housing (101): male gland (98*), three
leather packings (88*),
female gland (96*).
For Pump 221–072, with the lips of v–pack-
ings facing DOWN, install these parts in the
pump housing (101): poly packing (92 ), two
leather packings (88 ), poly packing (92 ), fe-
male gland (96 ).
2. Loosely screw the packing nut into the
housing.
3. For Pump 208–916, with the lips of v–pack-
ings facing UP, install these parts on the piston
stud (100): female gland (96*),
ing (92*), three leather packings (88*), male
gland (98*), packing retainer (91), and
(85*).
For Pump 221–072, with the lips of v–pack-
ings facing UP, install these parts on the piston
stud (100): poly packing (92
packings (88 ), poly packing (92
gland (98 ), packing retainer (91), and ball
(85 ).
4. Screw the piston stud (100) into the displace-
ment rod (103) and torque to 65–75 ft–lb
(88–100 N.m).
5. Lubricate the outside of the displacement rod
(103) and the inside of the sleeve (90). Slide
the displacement rod into the pump housing
(101) from the bottom until it protrudes
through the packing nut (102). T ighten the
packing nut just enough to prevent leaking.
6. Screw the displacement rod (103) into the hy-
draulic motor piston. Install the cotter pin (15).
7. Screw the three tie rod nuts (13) onto the tie
rods to attach the displacement pump to the
hydraulic motor. Torque the nuts to 15–25 ft–lb
(20–34 N.m).
8. Install the ball (86*
(94* ), and retainer (95) in the intake valve
housing. Line up the holes and insert the pin
(93). Screw the intake valve into the pump
housing (101) and torque
(100–135 N.m).
9. Install the strainer (79) and retaining ring (78)
in the extension tube (80), if used. Apply sea-
lant to the threads of the intake valve and in-
stall the tube.
DISPLACEMENT PUMP REPAIR
PTFE
packing (92*),
PTFE
pack-
ball
), two leather
), male
), guide (97), o–ring
to 75–100 ft–lb
Model 221–072
See Model 208–916 on page 16
15
102
84
96
98
103
101
85
CARBIDE
SEAT
91
100
TORQUE TO
65–75 ft–lb
(88–100 N.m)
97
94
CARBIDE
SEAT
Fig 11
HYDRAULIC
MOTOR
PISTON ROD
USE WRENCHES
ON FLATS ONLY
59
68
13
TORQUE TO
15–25 ft–lb
(20–34 N.m)
96
92
88
92
98
LIPS OF THROAT
V–PACKINGS MUST
FACE DOWN
96
92
88
92
98
LIPS OF THROAT
V–PACKINGS MUST
FACE UP
90 TAPERED END DOWN
95
93
86
99
TORQUE TO
75–100 ft–lb
(100–135 N.m)