Bearing Housing & Connecting Rod Replacement - Graco 232160 Instructions 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: Read General Repair Information on page 14
before doing this procedure. See Fig. 18.
NOTE: Stop sprayer at bottom of its stroke to get crank
(E) in its lowest position.To lower crank manu-
ally, carefully rotate blades of fan with a screw-
driver.
1. Relieve pressure.
2. Remove front cover (31). Unclip drain hose (79)
from pump. Hold a wrench on pump intake valve
(H) and unscrew pump suction tube (42). Discon-
nect pump hose (28).
3. Push up retaining spring (35). Push pin (20) out
rear.
4. Loosen locknut (38). Unscrew displacement
pump (39).
5. Remove four screws (33) and lockwashers (49).
6. Lightly tap lower rear of bearing housing (27) with
a plastic mallet to loosen it from drive housing (14).
Pull bearing housing and connecting rod assembly
(29) straight off drive housing.
7. Remove pail bracket assembly (F) and install with
locknuts (13) on new bearing housing.
8. Inspect crank (E) for excessive wear and replace
parts as needed. Evenly lubricate inside of bronze
bearing (B) with high quality motor oil. Liberally
pack roller bearing (C) with bearing grease.
9. Assemble connecting rod (29) and bearing
housing (27).
10. Clean mating surfaces of bearing (27) and
drive (14) housings.
Replacement
11. Align connecting rod (29) with crank (E) and drive
housing locating pins (G) with bearing housing (27)
holes. Push bearing housing onto drive housing or
tap it into place with a plastic mallet.
DO NOT use the bearing housing screws (33) to try
to align or seat the bearing housing; the bearing and
drive housing will not align properly and will result in
premature bearing wear.
12. Install screws (33) and lockwashers (49). Tighten
screws evenly to 300 in-lb (34 N.m).
13. Install pump. See page 27.
14. Install remaining parts. See Fig. 18.
14
E
25
28
Fig. 18
CAUTION
B
OIL
29
49
G
13
27
35
38
101
39
H
79
PACK WITH
C
BEARING GREASE
TORQUE TO
300 in-lb (34 N.m)
33
31
20
F
86
42
7955A
23
308802