Manitowoc 999, Service And Maintenance Manual

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Reference
Only
HYDRAULIC SYSTEM 999 SERVICE/MAINTENANCE MANUAL
2-18
Published 05-16-17, Control # 233-03
PRESSURE SENDER REPLACEMENT
See Figure 2-13 for identification of the pressure senders.
1. Lower all loads to ground.
2. Move all control handles to off and park all crane
functions.
3. Stop engine.
4. Place a suitable container under pressure sender to
catch oil leakage.
5. Disconnect electric plug from pressure sender.
6. Slowly loosen pressure sender only enough to allow
any remaining pressure to exhaust.
7. Remove pressure sender.
8. Install new pressure sender and connect electric plug.
NOTE: Pressure senders have pipe threads. Be sure to
install thread sealant.
9. Calibrate pressure senders (see Hydraulic System
Calibration in this Section.
WARNING
High Pressure Oil Hazard!
Do not attempt to remove a pressure sender unless
following steps are performed. High pressure oil will
exhaust from pressure sender port.
Item Description
1 Gauge Coupler (typical)
2 Electric Plug (typical)
3 Front Drum Raising Pressure Sender
4
Rear Drum Lowering and
Accessory System Pressure Sender
5 Rear Drum Raising Pressure Sender
6 Swing Right Pressure Sender
7 Swing Left Pressure Sender
8 Boom Hoist Raising Pressure Sender
9 Left Crawler Traveling Pressure Sender
10 Right Crawler Traveling Pressure Sender
11 Auxiliary Drum Raising Pressure Sender
FIGURE 2-13
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