Graco B Series Instructions-Parts List Manual page 17

NOTE: Replace the u-cup packing (Graco P/N111829)
whenever you repack the pump. The packing is
supplied with the pump repair kit.
15. Remove the gauge (H), using a 1–1/16 inch
wrench. Then remove the drain valve assembly
using a 2–1/4 inch wrench.
16. Remove the three screws (E). Pull off the cap (F).
Remove the packing (G). Install the new packing
so the lips face into the cap. See Fig. 13.
17. Reassemble the drain valve. Torque the screws
(E) to 40–50 in-lb (45–55 N.m) and screw it onto
the pump.
Grease inside of throat
1
before installing packings
Lips of v-packings in throat
2
must face down
Grease inside of packings
3
after installing
Torque 50–70 in–lb (5.6–8 N.m)
4
in crosswise pattern
Torque piston housing to piston seat
5
(213) to 90–125 ft–lb (122–170
N.m) without changing alignment of
packing nut
Lips of v-packings on
6
piston must face up
Grease outside of packings
7
after installing
Lips of U-cup seal on
8
piston must face down
If piston seat and rod were
9
separated, apply Loctite primer,
then red Loctite, and torque to
80–100 ft–lb (110–135 N.m)
10
Tighten with hammer
Fig. 14
Pump Repair
18. Install the pump and prime it. Check the packing
nut (202) and tighten it just enough to prevent
leakage.
Torque to
1
40–50 in-lb
(45–55 N.m)
Fig. 13
202
1
227
*226
2 3
*203
*204
*223
224
222
4
5
206
*209
6 7
*210
*211
*218
8
212
221
215
E
1
F
G
225*
2 3
201
9
205*
220*
207*
208*
219*
6 7
214 10
217
205*
216*
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