Reference
Only
TROUBLESHOOTING
999 SERVICE/MAINTENANCE MANUAL
10-52
Published 05-16-17, Control # 233-03
Test 20 – Setting Pump Neutral
To set pump neutral:
•
Engine must be off and power on, with all brakes and
locks engaged.
•
Disconnect the PC from the pump EDC by removing the
cable at the EDC.
•
Install a 0 – 600 psi (0 – 42 bar) gauge at each servo
gauge port.
•
Start engine with all brakes and locks engaged.
•
Loosen the hex lock nut and rotate the neutral adjusting
screw with hex wrench until pressure increases in one of
the gauges.
•
Note the handle position of the hex wrench and without
moving wrench, rotate the neutral adjusting screw
counter-clockwise until pressure increases in the other
gauge.
•
Note the handle position of the hex wrench again and
without moving wrench, rotate the neutral adjusting
screw clockwise halfway between the last position.
•
The control should now be in neutral with both gauges
reading the same case pressure.
•
Hold the neutral adjusting screw with the hex wrench
and tighten the lock nut.
•
Remove the gauges and install the servo gauge port
plugs.
Wrench Sizes
Item
Description
1
Neutral Adjusting Screw and Lock Nut
2
Servo Gauge Ports
P1535
2
1
Locking Nut
Hex Wrench
Early Series Units
17 mm
5 mm
Current Series Units
13 mm
4 mm
Summary of Contents for 999
Page 1: ...R e f e r e n c e O n l y Service Maintenance Manual Manitowoc 999 ...
Page 2: ...R e f e r e n c e O n l y ...
Page 4: ...R e f e r e n c e O n l y THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH ...
Page 297: ...R e f e r e n c e O n l y ...
Page 298: ...R e f e r e n c e O n l y ...