Bearing
Housing and Connecting Rod
WARNING
To
reduce the risk of serious bodily injury
, always fol
-
low the Pressure Relief Procedure W arning on
page
4 before repairing the sprayer
.
NOTE:
Steps 1 to 10 refer to Fig. 33
.
1.
Refer to
Removing the Pump
on page 16.
2. Remove the four screws (81) and lockwashers (46)
from
the bearing housing (76).
3. While
pulling the
connecting rod assembly (79) with
one hand, lightly tap the lower rear of the bearing
housing
(76)
with a plastic mallet to loosen it from the
drive
housing (77). Pull the bearing housing and the
connecting
rod assembly of
f the drive housing.
4. Inspect
the crank (A) for excessive
wear and replace
parts
as needed.
5. Evenly
lubricate the inside of the bronze bearing
(C)
in
the bearing housing (76), and the inside of the con
-
necting
rod link (D),
with high–quality motor oil. Liber
-
ally
pack the roller bearing (E) in the connecting
rod
assembly
(79) with bearing grease (77d), supplied.
6. Assemble
the connecting rod (79)
and bearing hous
-
ing (76).
7. Clean the mating surfaces of the bearing and drive
housings.
8. Align
the connecting rod with the crank (A) and care
-
fully align the locating pins (F) in the drive housing
(77)
with the holes in the bearing housing (76). Push
the bearing housing onto the drive housing or tap it
into
place with a plastic mallet.
CAUTION
DO
NOT use the bearing housing screw (81) to align
or seat the bearing housing with the drive housing.
These parts must be aligned using the locating pins
(F),
to help avoid premature bearing wear
.
9. Install the screws (81) and lockwashers (46) on the
bearing housing. Tighten the screws evenly to 175
in–lb
(20 N.m).
10.
Refer to
Installing the pump
on page 27.
81,46
E
D
59
75
15
137
54
80,59
A
76
B
C
79
71
73
77
53
72
74
Fig. 33
Torque
to 175 in–lb
(20 N.m)
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