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m
BEARING HOUSING
&
CONNECTING ROD REPLACEMENT
WARNING
6.
Inspect the crank (E) for excessive wear and replace
parts as needed. Evenly lubricate the inside of the
bronze bearing (B) with high quality motor oil. Liber-
ally pack the roller bearing (C) with bearing grease.
7. Assemble the connecting rod (29) and bearing hous-
ing (27).
8. Clean the mating surfaces of the bearing and drive
housings.
the risk of a fluid injection injury. splashing in the
9.
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-
with
a plastic mallet.
ing housing onto the drive housing or tap
it
into place
CAUTION
to align or seat the bearing housing; the bearing and
drive housing
will
not align properly and will result in
premature bearing wear.
10. Install the screws (33) and lockwashers (49) on the
bearing housing and tighten evenly to 115 to 135 in-
11,.
Screw the displacement pump 3/4 of the way into the
bearing housing (27). Hold the pin (20) up to the pin
hole in the connecting rod (3). Screw in the pump un-
til
the pin slides easily into the hole. Back off the
pump until the top threads of the pump cylinder are
flushwith the faceofthe bearing housing and theout-
let adapter (A) is facing back. Push the retaining
spring (35) into the groove all the way around the
connecting rod. Tighten the locknut (38) very tight
-
about 75-85 tt-lb (90 to 100 N.m)
-
with a 2-114 in.
open end wrench and a light hammer.
See
Fig32-2.
Ib
(13-16
Nm).
r ,
42
Fig
32-1
groove all the way around, to prevent the pin (20)
from working
loose
due to vibration. See Fig 32-2.
NOTE: Stop the sprayer at the bottom of its stroke to get
the crank
(E)
in its lowest position.To lower the
If the pin works loose, it or other parts could break off
due to the force of the pump action. These parts
crank manually, carefully rotate the blades of the
fan with a screwdriver.
could be projected through the air and result in seri-
ous bodily injury or properly damage, including dam-
1. Remove the front cover and screws (31,32). Hold a
age to the pump connecting rod or bearing housing.
wrench on the pump intake valve and unscrew the
pump suction tube (42). Disconnect the pump outlet
hose (47).
12. Reinstall the front cover and screw'(31,32). Recon-
2. Use a screwdriver
to
push aside the retaining spring
nect the suction tube (1 15) and pump outlet hose
(35). Push the pin (20) out the rear.
(47). See Fig 32-1.
3. Loosen the pump jam nut (38) with an adjustable
wrench. Unscrew the displacement pump (39).
4.
Use a 3/16" hex key wrench to remove the four
screws (33).and lockwashers (49) from the bearing
housing (27).
5.
Lightly tap the lower rear of the bearing housing (27)
with
a
plastic mallet to loosen ii from the drive hous-
ing
(2). Pull the bearing housing and the connecting
rod assembly (3) straight off the drive housing.
.:
FOR UPRIGHT SPRAYER MODELS ONLY: re-
TORQUE TO
.'
'
move the Pail bracket assembly
(6)
and reinstall it on
Fig
32-2
.'*':-the new bearing housing.
!X-lOO
N.M
32
307-786
. . .
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