Motor Replacement; Wiring Diagram - Graco 390 Repair Manual

Motor Replacement

See Wiring Diagram, page 27.
WARNING
Read Electric Shock Warning, page 3 and Pressure
Relief Procedure, page 7.
CAUTION
Do not drop gear cluster (3) and (2) when removing
drive housing (5). Gear cluster may stay engaged in
motor frontend bell or drive housing.
Removal
1. Relieve pressure, page 7. Disconnect power cord
from outlet.
2. Remove pump (9). Displacement Pump Replace-
ment, page 13.
3. Remove drive housing, Drive Housing Replace-
ment, page 15.
4. Remove Pressure (Fluid) Manifold, Manifold
Replacement, page 23.
26
31 34
33
30
30
15
6
45
Liberally apply grease
1
5. Disconnect all leads from board (33) and remove
control board. Control Board Replacement, page
19.
6. Remove ground wire (G) from motor endbell.
7. Remove four screws (6) and motor (1) from frame
(45).
Installation
1. Install new motor (1) on frame (45) with four screws
(6).
2. Install manifold (15) with two screws (6). Manifold
Replacement, page 23
3. Install control board (33) with three screws (30).
Connect all leads to board. See Control Board
Replacement, page 19 and Wiring Diagram, page
27.
4. Connect ground wire (G) to motor with green ground
screw (31).
5. Install Drive Housing. Drive Housing Replace-
ment, page 15.
6. Install pump (9). Displacement Pump Replace-
ment, page 13.
7. Install shroud (29) with two screws (30).
1
2
1
6
ti5642a
Motor Replacement
3
1
310824C