Graco Power-Flo Bulldog, Инструкция по эксплуатации

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14 307982
Displacement Pump Service
WARNING
To reduce the risk of serious bodily injury, including
injection, splashing in the eyes, or injury from
moving parts, always follow the Pressure Relief
Procedure on page 8 when checking or servicing
any pat of the spray/dispensing system, when
installing, cleaning, or changing spray tips/nozzles,
and whenever you stop spraying/dispensing.
See Fig. 4 unless otherwise noted.
Before You Start
1. Flush the pump with compatible solvent if possible.
Follow the Pressure Relief Procedure on page
8.
2. If you are using a repair kit to service the pump,
use all the new parts. Parts included in the kits are
marked with a dagger (for example, 124
{
) in the
text and drawings.
Disassembly
1. Disconnect the hoses, remove the pump from its
mounting, and clamp it in a vise. Unscrew the
coupling nut (9) and the tie rod locknuts (3). Re-
move the cotter pin (1), loosen the jam nut (5), and
unscrew the connecting rod (11) from the displace-
ment rod (108). Pull the motor away from the
displacement pump.
2. Place the pump housing (109) in a padded jaw
vise with the outlet (107) against one jaw.
3. Remove the wet--cup/packing nut (136), and
packing nut (140). Remove the packings from the
packing nut.
4. Push the displacement rod (108) down so the
priming piston (119) clears the intake cylinder
(117).
5. Use two wrenches to oppositely turn and loosen
the hex nuts (120) on the piston rod (122).
6. Remove the valve plate (118), valve guide (121),
and the priming piston (119).
7. Remove the intake cylinder (117) and o--ring (124).
8. Pull on the piston rod (122) to remove the dis-
placement rod (108) from the pump housing (109).
9. Remove the cotter pin (126) and unthread the
piston rod (122) from the piston valve (112).
Fig. 4
9
11
1
135
3
4
2
1
3
4
2
140
125
{
134
See Fig. 6
112
111
109
125
{
124
{
Ref. 117
122
121
119
120
1
1
136
5
108
136
1
See Fig. 5
107
2
110
132
{
126
113
{
114
5
See Fig. 7
117
6
120
118
5
6
Torque to 54--81 N
S
m (40--60 ft-lb).
Torque to 420--460 N
S
m (310--340 ft-lb).
Apply sealant and torque to 81--102 N
S
m
(60--76 ft-lb).
Apply sealant to threads.
Torque to 37--47 N
S
m (25--35 ft-lb).
Torque to 129--149 N
S
m (94--110 ft-lb).