Maintenance
3A1185B
15
Gear and Pump Assembly
Servicing Gear box Assembly
1.
Remove fluid pump. See
Fluid Pump Disconnect
,
page 11.
2.
Remove frame from the gearbox by loosening the
four mounting screws.
3.
Separate cover assembly (13) from box by removing
bolts (1) from front of cover and back of box and
shoulder bolts (2) from front of cover and back of
box.
4.
Lay unit on its back and disassemble gearbox.
5.
Inspect bearings (14, 17), Crosshead Assembly
(15), Gearcrank (16) and sleeve bearing (9) inside
cover assembly (13) for wear/damage. Replace
worn/damaged parts.
6.
If gear grease needs replacing, replace with gear
grease (Part No. 073033).
7.
Clean mating surfaces of cover and box thoroughly.
use Part No. 342899 Blue XS
TM
Advanced RTV Sili-
cone Instant Gasket.
8.
Reassemble in reverse order.
Pressure Control Assembly
Calibration
NOTE:
Anytime a sensor or pressure control assembly
(board) or both are replaced, the following calibrations
must be performed.
NOTE:
Pressure control assemblies (boards) are now
being equipped with a green grounding wire attached.
Connect the grounding wire to terminal box using the
same screw that holds the grounding wire from the
power cord.
Zero Calibration
1.
Place prime/pressure relief valve in the prime (open)
position.
2.
Set the pressure control knob to the minimum set-
ting (CCW).
3.
Remove the screws and lower the pressure control
assembly.
4.
Remove any jumper on the “P-ZR” terminal.
NOTE:
This jumper is no longer used.
5.
Turn machine “ON” and ensure it is not cycling.
6.
If the yellow light on the electrical board in ON and
you have “0000” on the LCD display, the Zero Cali-
bration is complete no further adjustment is neces-
sary. If the light is ON and there are numbers on the
display, use an insulated screwdriver to turn the
“ZERO” trimpot counter-clockwise until the light
goes out. Then turn it clockwise until the yellow light
comes on, continue to turn the trimpot and the num-
bers will reduce until the LCD shows “0000”. The
Zero Calibration is now complete. If you adjust
beyond “0000”. The Zero Calibration is now com-
plete. If you adjust beyond “0000” the numbers will
start to increase.
If the digital display shows “---” and no yellow light,
you should turn the Zero trimpot clockwise until the
yellow light is on, continue turning until “0000” is
shown.
The goal is to see the “0000” on the digital display,
this is when you have Zero Calibration (Relying on
the yellow light is no longer used.)
1
2
12
10
7
6
5
4
8
13
14
15
16
17
1
2
Motor
11
9
