14
REASSEMBY OF THE DISCHARGE VALVE ASSEMBLY
1. Examine discharge adapter-
seat o-rings and replace if
worn. Lubricate and install
o-rings on both front and
rear of adapter-seat.
(Figure A)
2. Place discharge
manifold on work
surface and install
valve retainers in
each port with top
tab down and
completely seat
into the chamber.
(Figure B)
3. Replace worn or damaged springs and
place into retainers.
4. Examine valves and seats for pitting,
grooves or wear and replace as needed.
5. Place valves
over springs
with concave
side down.
(Figure C)
6. Lubricate O.D.
of discharge
adapter-seat and
insert smaller I.D.
into discharge
manifold ports.
Snap into position.
Exercise caution
not to cut or pinch
o-rings. (Figure D)
7. Carefully guide manifold with adapters
over plunger rod ends and press into inlet
manifold. (Figure E)
8. Replace six (6) socket head screws and
torque to specifications. See TORQUE
CHART below. Torque diagonally in order
shown. The outer four (4) screws, then
center two (2), hand tight. Then repeat
series to specifications. (Figure F)
9. Reattach by-pass hose to bottom of
unloader fitting.
10. Remember to fill
crankcase with
oil before replac-
ing top
cover to unit.
See “LUBRICATION”
for more information.
(Figure G)
Torque Sequence
1
5
3
4
6
2
↕
Torque Chart
Tool
Torque
Pump Item
Thread
Size
in.lbs. ft.lbs. Nm
Outer Bearing Case
M6x16
M10
50
4.0
6.0
Inner Bearing Case
M6x16
Phillips
50
4.0
6.0
Manifold Socket
M8x75
M6
115
9.4
13
Head Screws
Plunger Rod Nuts
M6
M10
55
4.4
6.2
Oil Gauge
M28
Oil Gauge
45
3.6
5
Tool
Figure A
Figure B
Figure C
Figure E
Figure F
Figure G
Figure D
