Bearing Housing And Connecting Rod - Graco 231–406, Series A Instructions-Parts List Manual

Bearing Housing and 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 8.
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 pump. See page 16.
2. Remove front cover (31). Remove bearing housing
screws (33). See Fig. 18 and part list.
3. Tap lower rear of bearing housing (27) with plastic
mallet to loosen it from drive housing (18). Pull
bearing housing and connecting rod (29) straight
off drive housing.
4. Inspect crank (H) for excessive wear and replace
parts as needed.
5. Evenly lubricate inside of bronze bearing (K) with
motor oil. Liberally pack roller bearing (J) with
bearing grease.
6. Assemble connecting rod (29) and bearing housing
(27).
7. Clean mating surfaces of bearing and drive hous-
ings.
8. Align connecting rod with crank (H) and align
locating pins in drive housing with holes in bearing
housing (27). Push bearing housing onto drive
housing or tap into place with plastic mallet.
9. Install bearing housing screws (33). Torque evenly
to 300 in–lb (34 N.m).
10. Reinstall all parts. See page 16 to install pump.
Torque to 300 in-lb (34 n.m)
Lubricate
18
H
J
29
27
49
33
31
20
38
39
Fig 18
K
35
132