CNH AIR CONDITIONER AND HEATER Installation Instructions (91870660)

CNH AIR CONDITIONER AND HEATER Installation Instructions (91870660)

Out in the yard or on a jobsite, this machine’s working in dust, vibration, heat, and cold all day, so the cab air system takes a beating. This CNH air conditioner and heater installation manual helps you route lines correctly, mount components where they belong, and tie into the machine without guessing. Say you’re adding a factory-style kit to a loader: you’ll trace the harness, align brackets, connect hoses, then bleed the system the way CNH expects, instead of hoping it all clears the fan belt.

Applications & Use Cases

• Retrofit a new A/C–heater kit on a bare-cab machine, step-by-step, so you can test blower speeds and verify temperature change before buttoning up panels.
• Replace a damaged unit and reuse good parts, using the manual to inspect seals, isolate bad hoses, and route replacements so they don’t rub or kink.
• Tie into existing electrical safely, checking the right fuse locations and grounds so the clutch and fans don’t fight other circuits.
• Diagnose poor airflow after an install by retracing duct routing and damper positions instead of randomly swapping parts.
• Prep for seasonal changeovers, checking heater hoses, valve positions, and control operation so you’re not tearing into it mid-winter.

FAQ

Q: Is this a PDF I can search on my laptop or phone?

A: Yes, it’s typically a searchable PDF, so you can jump to sections by keyword instead of scrolling forever.

Q: Can I print just a few pages to take to the machine?

A: You usually can; most folks print the diagrams and step lists, then keep the full file on a tablet or laptop.

Safety Note

Always depressurize and cool the system before disconnecting any A/C or heater lines, and wear eye protection when you crack fittings.

CNH AIR CONDITIONER AND HEATER Index:

KIT CONTENT

GENERAL INFORMATION

ASSEMBLY

CNH

91869886 – AIR CONDITIONER AND HEATER
CASE CONSTRUCTION
221F EVOLUTION
321F EVOLUTION
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