New Holland CR9090 Tier 4a, Service Manual

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INTRODUCTION
PROTECTING THE ELECTRONIC/ ELECTRICAL SYSTEMS DURING CHARGING OR WELD-
ING
To avoid damage to the electronic/electrical systems, always observe the following:
1. Never make or break any of the charging circuit connections, including the battery connections, when the engine
is running.
2. Never short any of the charging components to ground.
3. Always disconnect the ground cable from the battery before arc welding on the combine or on any header attached
to the combine.
• position the welder ground clamp as close to the welding area as possible
• if welding in close proximity to a computer module, then the module should be removed from the combine
• never allow welding cables to lay on, near or across any electrical wiring or electronic component while welding
is in progress
4. Always disconnect the negative cable from the battery when charging the battery in the combine with a battery
charger.
NOTICE: If welding must be performed on the unit, either the combine or the header (if it is attached), the battery
ground cable must be disconnected from the combine battery. The electronic monitoring system and charging system
will be damaged if this is not done.
Remove the battery ground cable. Reconnect the cable when welding is completed.
WARNING
Battery acid causes severe burns. Batteries contain sulfuric acid. Avoid contact with skin, eyes or clothing.
Antidote - EXTERNAL: flush with water. INTERNAL: drink large quantities of water or milk. Follow with milk
of magnesia, beaten egg or vegetables oil. Call physician immediately. EYES: flush with water for 15 minutes
and get prompt medical attention.
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TOOLS
The tools that NEW HOLLAND suggests and illustrate in this manual have been:
• specifically researched and designed for use with NEW HOLLAND machines
• essential for reliable repair operations
• accurately built and rigorously tested so as to offer efficient and long-lasting operation
By using these tools, repair personnel will benefit from:
• operating in optimal technical conditions
• obtaining the best results
• saving time and effort
• working in safe conditions
NOTE: The terms "front", "rear", "right-hand" and "left-hand" (when referred to different parts) are determined from
the rear, facing in the direction of travel of the machine during operation.
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