Graco EM 490 Instructions-Parts List Manual page 14

WARNING
To reduce the risk of serious bodily injury, including
fluid injection; splashing in the eyes; injury from
moving parts or electric shock, always follow the
Pressure Relief Procedure W arning on page 11
before continuing.
1 Remove the pump. See page 19. Remove the con-
necting rod and bearing. See page 13.
NOTE: See Fig 16 for this procedure.
2 Remove the screws (55d) from the front of the drive
housing (C). Remove the screws (55f) from the top
rear of the motor housing (B). Pull the drive housing
(C) off the motor housing (B).
C
55b
55c
Fig
7–16
DRIVE ASSEMBLY
37
55f
55e
B
55b
55c
55a
55d
3 Remove the screws (55c) from the front of the motor
housing (B). Pull the motor housing off the motor.
4 Clean and inspect the gear (37). Replace the gear if it
is worn or damaged. To remove the gear, drive out the
pin (27) and pull the gear off the motor shaft (A). Be-
fore reassembling the gear, apply molybdenum disul-
fide spray lubricant to it, allow it to dry, then apply in-
dustrial grade, heavy duty, extreme-pressure lithium
soap grease.
5 Install the new drive assembly in the reverse order of
removal.
A
27
0126