Graco EM 380 Instructions-Parts List Manual page 6

REMOVING
and
REPLACING CONNECTING ROD
and
BEARING
Shut
off
and unplug sprayer, trigger spray gun and
open filter drain valve to release pressure (provide a
container
t o
catch drainage1 and engage trigger safety.
Remove pump as described above.
Remove the 6 screws
(191 and cover (35). Remove the 2
screws and lockwashers
(20
and 18). Remove bearing
(53) and connecting rod
(541,
sliding connecting rod off
of crankshaft. See Fig 5.
and remove pin
1341
from coupling
(36).
Remove coupl-.
Use a screwdriver to push retaining spring
(331
aside
ing from connecting rod.
use solvent1 and inspect surfaces of bearing and con-
Pull connecting rod out of bearing. Wipe clean (don't
necting rod link for wear or damage. If either needs
replacing, you should replace both. When installing rod
and bearing, coat surfaces with SAE 10 non-detergent
motor oil.,
Clean and inspect crankshaft. Wipe clean with a rag; do
not use solvent. If crankshaft is badly worn, replace
drive assembly.
Clean and inspect connecting rod needle bearing.
.
Repack bearing with industrial heavy duty extreme
pressure lithium soap grease.
NOTE:
After evely
100 hours
of operation, or
whenever servicing
the pump (whichever
comes
first),
fill
the cavity in connecting rod
I 5 4 1
with SAE 10 non-detergent motor oil.
Fig 5
..
REMOVING
and
REPLACING DRIVE ASSEMBLY
Shut off and unplug sprayer, trigger spray gun and
open filter drain valve to release pressure (provide a
container to catch drainage) and engage trigger safety.
Fig 6
6
307-371
. . .