Graco E Series Instructions-Parts List Manual page 30

BEARING HOUSING & CONNECTING ROD REPLACEMENT
Before doing this procedure, WARNING follow
Relief Procedure Warning on page 21 to reduce
the risk of a fluid injection injury, splashing in the
eyes or in the skin, injury from moving parts or elec-
tric shock. Be sure to unplug the sprayer!
Refer to Fig 30-1 for Steps 7 to 74.
NOTE: Stop the sprayer at the bottom of its stroke to get
the crank (E) in its lowest Dosition. If the crank
must be lowered manually, carefully rotate the
blades of the fan with a screwdriver.
1.
Remove the front cover and screws (31, 32).
(E)
2.
If the crank must be lowered manually, carefully
rotate the blades of the fan with a screwdriver.
3. Unscrew the suction tube (42) from the pum6,'hold-
ing a wrench on the pump intake valve to keep the
pump from loosening.
4. Disconnect the pump outlet hose (47) from the dis-
placement pump outlet nipple (46).
5. Use a screwdriver to push aside the retaining spring
(35) at the top of the pump. Push the pin (20) out the
rear.
6. Loosen the jam nut (38) with an adjustable wrench.
Unscrew and remove the displacement pump.
7.
Use a 5 mm hex key wrench to remove the four
screws (33) and lockwashers (49) from the bearing
housing (27).
8.
Lightly tap the lower rear of the bearing housing (27)
with a plastic mallet to loosen it from the drive hous-
ing (2). Then pull the bearing housing and the con-
ing.
9. Inspect the crank (E) for excessive wear and replace
parts as needed.
Evenly lubricate the inside of the bronze bearing in
the bearing housing with high quality motor oil. Liber-
ally pack the roller bearing in the connecting rod as-
sembly (3) with bearing grease.
11. Assemble the connecting rod and bearing housing
12. Clean the mating surfaces of the bearing and drive
housings.
13. Align the connecting rod with the crank (E) and care-
fully align the locating pins in the drive housing with
the holes in the bearing housing (27). Push the bear-
ing housing onto the drive housing or tap
a
with plastic mallet.
30
the Pressure DO NOT use the bearing
to align or seat the bearing housing; the bearing and
drive housing will not align properly and will result in
premature bearing wear.
14. Install the screws (33) and lockwashers (49) on the
bearing housing and tighten evenly to 13-16 N.m.
FILL CAVITY WITH
into place Fig 3CL1
it
procedure continued on page 3 7
42
try