CNH AIR CONDITIONER AND HEATER Installation Instructions (91870608)

Out in the yard or on a jobsite, this kit’s going on a loader or similar machine that spends its life in dust, mud, and temperature swings that’d wear most people out. This CNH air conditioner and heater installation manual helps you route lines, mount components, and tie into the cab without guessing. Say you’ve got a bare-bones cab and a new kit on the bench—this’ll walk you through where to hang the evaporator, how to trace the harness, and how to bleed the coolant side so you don’t cook the engine.

Applications & Use Cases

• Trace and verify wiring so you don’t fry a control panel or short a blower motor.
• Check mounting points, then align brackets and inspect clearances before you tighten anything down.
• Isolate coolant hoses, cut them clean, and route heater lines so they don’t rub on sharp edges or moving parts.
• Test blower speeds, temperature blend, and compressor engagement after install so you know the system actually works.
• Bleed the cooling system and re-check for leaks around fittings and clamps after the first heat cycle.

FAQ

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

A: It’s typically a standard PDF, so you can search part names or steps while you’re at the machine.

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

A: Yeah, most folks print the diagrams and step lists they need, then keep the full file on a computer for reference.

Safety Note

Always depressurize and cool the engine before opening any coolant or A/C lines, and wear eye protection when you crack those fittings.

CNH AIR CONDITIONER AND HEATER Index:

ASSEMBLY

KIT CONTENT

CNH

91869042 – AIR CONDITIONER AND HEATER
CASE CONSTRUCTION
121F EVOLUTION
21F EVOLUTION
NEW HOLLAND CONSTRUCTION
W50C EVOLUTION
W60C EVOLUTION