Description
Explore the rotary air-screen and cooling package used with the 16-liter engine on the New Holland CR11 combine. This walkaround explains how the system draws clean, cool ambient air, manages debris, cools major machine circuits, and provides service access designed to reduce routine cleaning demands.
Chapters:
0:11 Rotary air screens and three-fan cooling system
0:29 Clean, cool ambient-air intake location
1:05 Dual rotary air-screen layout
1:13 Engine orientation and full-width cooling package
1:33 Hydraulic drive and synchronized belt system
1:43 Screen wipers and corn-fines control
1:59 Vacuum ductwork activated with the thresher
2:32 Brushes, bumpers, and debris agitation
3:10 Cooler-box service and cleaning access
3:28 HVAC, PTO, engine-coolant, charge-air, and hydraulic-oil coolers
3:49 Air-powered cooler-box wipers
4:48 Vacuum duct and engine air-filter intake
5:18 Service step and radiator access
5:43 Reverse-direction cleaning with an air wand
6:00 Early next-generation CR cleanliness experience
6:13 Single-plane screen placement and ambient-air supply
Common questions covered in this video:
How many cooling fans does the CR11 use with the 16-liter engine? The video states that three fans draw air through the rotary air screens and cooler boxes.
How does cooling air move through the combine? Air passes through two rotary air screens and the cooler boxes, travels across the back of the engine, and exits toward the rear.
Why is air drawn from this location? The presenter describes it as the cleanest, coolest ambient-air location because it is away from exhaust heat and less exposed to the residue blast directed toward the rear.
How does engine orientation support the cooling package? Aligning the engine crankshaft with the rotors opens the machine's left-to-right width for the cooler-box assembly and dual screens.
How are the rotary air screens driven? They are hydraulically driven through a belt-drive system and synchronized together.
How are dirt and corn fines kept from blocking the screens? Screen wipers help prevent buildup, and vacuum ducts remove loose material whenever the thresher is engaged.
Do the small brushes rub directly on the rotary screens? No. They are intended to contact the screen bumpers, which agitates and loosens material without intentionally touching the screen surface.
Which cooling components are behind the service door? The presenter identifies the HVAC condenser, PTO cooler, engine-coolant cooler, charge-air cooler, and hydraulic-oil cooler.
What powers the cooler-box wipers? Airflow through the cooler-box assembly actuates them; they do not have a separate powered drive.
Where does the engine air filter receive its intake air? It draws air after the rotary air screens but before the radiators.
How can a technician blow out the radiators opposite the normal airflow? Open either bolted access cover and insert an air wand to blow through the radiators in the reverse direction.
What does the presenter say about cleaning frequency? Based on early experience with next-generation CR combines, the presenter says the package stayed very clean and reverse-direction blowout was not often required.
Technical glossary:
New Holland, CR10, CR11, next-generation CR, 16-liter engine, rotary air screen, cooler box, cooling package, cooling fan, ambient air, engine crankshaft, rotor, parasitic loss, hydraulic drive, belt drive, synchronized drive, wiper, corn fines, ductwork, vacuum system, thresher, brush, bumper, HVAC condenser, PTO cooler, engine-coolant cooler, charge-air circuit, hydraulic oil, radiator, engine air filter, service door, service-access step, bolted cover, air wand, engine deck, grain tank.
Topics covered:
• CR11 cooling package for the 16-liter engine
• Three engine cooling fans
• Two rotary air screens and the cooler-box assembly
• Airflow through the screens and coolers toward the rear of the machine
• Clean ambient-air intake away from exhaust heat and rearward residue flow
• Engine crankshaft alignment with the rotors
• Parasitic-loss reduction described by the presenter
• Use of the machine's full width for the cooling package
• Hydraulically driven screens with a synchronized belt drive
• Rotary-screen wipers for dirt and corn fines
• Thresher-engaged vacuum ductwork for loose material
• Brushes that contact screen bumpers rather than intentionally touching the screens
• HVAC condenser and PTO cooler
• Engine-coolant, charge-air, and hydraulic-oil coolers
• Airflow-powered cooler-box wipers
• Engine air-filter intake after the rotary screens and before the radiators
• Service-access step and front-side radiator access
• Two bolted covers for reverse-direction radiator blowout
• Air-wand cleaning procedure
• Early next-generation CR field experience described by the presenter