Bearing Housing & Connecting Rod Replacement - Graco ultra max 795 Instruction Manual

Bearing Housing and Connecting Rod
1. Read General Repair Information on page 3.
2.
Relieve pressure; page 3.
3. Stop sprayer at bottom of stroke to get crank (E) in
lowest position.To lower crank manually, carefully
rotate blades of fan with a screwdriver.
4. Fig. 8. Remove front cover (49). Unclip drain hose
(36) from pump. Unscrew pump suction tube (39)
pump intake valve (213). Disconnect pump hose
(70).
5. Push up retaining spring (68). Push pin (66) out
rear.
6. Loosen locknut (47). Unscrew displacement
pump (64).
7. Remove four screws and lockwashers (25,23).
8. Tap lower rear of bearing housing (22) with a
plastic mallet to loosen from drive housing (67).
Pull bearing housing and connecting rod assembly
(63) straight off drive housing.
9. Remove pail bracket assembly (F) and install it on
new bearing housing.
10. Inspect crank (E) for excessive wear and replace
parts as needed. Evenly lubricate inside of bronze
bearing (B) with high quality motor oil. Pack roller
bearing (C) with bearing grease.
11. Assemble connecting rod (63) and bearing housing
(22).
12. Clean mating surfaces of bearing and drive hous-
ings (22, 67).
13. Align connecting rod (63) with crank (E) and drive
housing locating pins (G) with bearing housing (22)
holes. Push bearing housing onto drive housing or
tap into place with plastic mallet.
14
308842
Replacement
Do not use bearing housing screws (25) to align or
seat bearing housing; this may cause bearing and
drive housing misalignment and result in premature
bearing wear.
14. Install screws and lockwashers (25, 23). Tighten
screws evenly to 175 in-lb (19 N
m).
15. Install pump; page 17.
16. Fig. 8. Install remaining parts.
67
E
Oil
1
2
Pack with bearing grease
Torque to 175 in-lb (19 N
m)
3
Fig. 8
CAUTION
B
1
G
22
68
47
70
40
64
213
39
85
2
C
63
3
25, 23
49
66
F
36
7698B