Bearing Housing & Connecting Rod - Graco 820-116 Instructions-Parts List Manual

Airless paint sprayer
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Bearing Housing & Connecting Rod
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 7.
Torque to 175 in-lb (19 N.m)
Lubricate with motor oil
Liberally pack roller bearing with bearing grease
J
29
K
27
49
33
32
31
Fig. 44
18
H
L
NOTE: Stop the sprayer at the bottom of its stroke to
get the crank (H) in its lowest position.To lower the
crank manually, rotate the blades of the motor fan with
a screwdriver.
1. Remove the pump. See page 15.
2. Remove the front cover (31). Remove the bearing
housing screws (33).
3. Tap the lower rear of the bearing housing (27) with
a plastic mallet to loosen it from the drive housing
(18). Pull the bearing housing and the connecting
rod (29) straight off the drive housing.
4. Remove the pail bracket assembly (L) and reinstall
it on the new bearing housing.
5. Inspect the crank (H) for excessive wear and re-
place parts as needed.
6. Evenly lubricate the inside of the bronze bearing
(K) with motor oil. Liberally pack the roller bearing
(J) with bearing grease.
7. Assemble the connecting rod (29) and bearing
housing (27).
8. Clean the mating surfaces of the bearing and drive
housings.
9. Align the connecting rod with the crank (H) and
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 it into
place with a plastic mallet.
10. Install the bearing housing screws (33). Torque
evenly to 175 in-lb (19 N.m).
11. Reinstall all parts. See page 19 to install the pump.

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