Graco Inc. 248890 - Manual (Page 8)

Bearing Housing and Connecting Rod
8 311046J
Bearing Housing and Connecting Rod
Removal
1. Relieve pressure; page 5.
2. F IG . 1. Remove four screws (45) and front cover (44)
3. Remove pump. Refer to Displacement Pump, Removal,
page 14.
4. Remove four screws (41) and washers (42) from bearing
housing (40).
5. Pull connecting rod (43) and lightly tap lower rear of
bearing housing with plastic mallet to loosen from drive
housing (33). Pull bearing housing and connecting rod
assembly off drive housing.
6. Inspect crank (B) and connecting rod (43) for excessive
wear and replace parts as needed.
Installation
1. Evenly lubricate inside of bronze bearing (C) in bearing
housing (40) with high-quality motor oil. Liberally pack top
roller bearing (E), lower bearing (D) inside connecting rod
(43) with bearing grease.
2. Assemble connecting rod (43) to bearing housing (40).
Rotate connecting rod to lowest position.
3. Clean mating surfaces of bearing and drive housings.
4. Align connecting rod with crank (B) and carefully align
locating pins in drive housing (33) with holes in bearing
housing (40). Push bearing housing onto drive housing or
tap into place with plastic mallet.
5. Install screws (41) and washers (42) in bearing housing.
Torque evenly to note 3 value in Fig. 1.
6. Install pump. Refer to Displacement Pump, Installation,
page 14.
WARNING
Read Skin Injection Hazard, page 3; Burn Hazard, page 4
CAUTION
DO NOT use bearing housing screws (41) to align or
seat bearing housing with drive housing. Align these
parts with locating pins, to avoid premature bearing
wear.
F IG . 1
3
2
1 Oil
Pack with bearing grease 114819
Torque to 25 ft-lb (34 N.m)
F
B
38
E
D
43
1
2
3
C
2
44
45
41
42
40
A
88
33
87
68
ti5739b