Bearing Housing And Connecting Rod; Removal; Installation - Graco 257369 Repair Manual

Bearing Housing and Connecting Rod

Bearing Housing and Connecting Rod

Removal

1. Perform Pressure Relief Procedure, page 9.
2. Remove Pump, page 24. Remove four screws (45)
and front cover (44).
3. Remove four screws (64) and washers (63) from
ProConnect bearing housing (40).
40
4. 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 con-
necting rod assembly off drive housing.
B
5. Inspect crank (B) and connecting rod (43) for exces-
sive wear and replace parts as needed.
12
45
ti13706a
44
63
64
ti13707a
33
43
ti13713a

Installation

1. Evenly lubricate inside of bronze bearing (C) in
bearing housing (40) with high-quality motor oil. Lib-
erally pack top roller bearing (E), lower bearing (D)
inside connecting rod (43) with bearing grease.
D
C
2. Assemble connecting rod (43) to bearing housing
(40). Rotate connecting rod to lowest position.
3. Clean mating surfaces of bearing and drive hous-
ings.
33
B
F
4. Align connecting rod with crank (B) and carefully
align locating pins (F) in drive housing (33) with
holes in bearing housing (40). Push bearing housing
onto drive housing or tap into place with plastic mal-
let.
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.
5. Install screws (41) and washers (42) in bearing
housing. Torque evenly to 40 ft-lb (54 N•m).
6. Install Pump, page 24.
E
43
40
ti13714a
43
ti13715a
NOTICE
313889E