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475 Posts
Discussion Starter · #1 ·
Does anyone know of a website that outlines the changes that Case made to the 21-23 series by year?
eg 2002 hydraulic reverser added, 2003 AFX rotor added.

I stumbled across a site that had that in a nice neat list and now I can't find it. Thought I bookmarked it.

193 Posts
Hoobers Inc used to have it on their web page. Don't know if it is still there or not.

Axial-Flow Combine Timeline
1977 Introduction of first 300 Axial-Flow Combines
1440 135 H.P. 436 CuIn. 145 Bu. Grain Tank
1460 170 H.P. 436 Cu.In. 180 Bu. Grain Tank

1978 Introduction of 1480 Axial-Flow Combine
1480 190 H.P. 436 Cu. In. 208 Bu. Grain Tank

1980 Keystock grates introduced
Electric fan speed adjustment
27/28 gears now used on 1440 grain & corn combines
Oscillating guide axle shield standard on rice & corn machines
Friction disc slip clutch replaces ratchet clutch
New rotor with new cone rear bulkhead

1981 Introduction of 1420 Axial-Flow Combine
1420 112 H.P. 358 Cu.In. 125 Bu. Grain Tank
Introduction of Electro-hydraulics
Three-bladed discharge beater
1480 engine and H.P. change
1480 210 H.P. 466 Cu.In. 208 Bu. Grain Tank
PTO clutch changed from 7 plates to 9 plates (1480)
Straw chopper both factory and field codes (April 1981)

Two Speed Hydrostatic Drive Motor 1480
Power guide wheel drives for all models as factory installed option (January 1981)
Grain Loss Monitor as field attachment only
Introduction of 900 Series Corn Heads

1982 1420 H.P. change
1420 124 H.P. 358 Cu.In. 125 Bu. Grain Tank
Electric fan speed adjustment offered on 1420
Power-guide rear axle availabe on 1420
Brake disc diameter changed from 7" to 8" on 1460/1480
Additional brake disc (2 disc to 3 disc) on 1420/1440
Hydraulic control valve improvements
Automatic feeder cutoff available
Auto reel-to-ground speed attachment available
Fishburn lock added to 1460/1480 transmission
Clean grain auger shaft increased to 1-1/4" on 1440/1460/1480
Rocktrap introduced on 1440/1460/1480

1983 New elevator jackshaft on 1440/1460/1480
Cessna header lift pump replaced Webster
Final drive shafts changed from 3-bolt to 1-bolt design on 1480
Inline pressure filter between hydraulic pump and header valve
Bosch injection pump replaced rotary type on 1480
1983 Introduction of Specialty Rotor
Danfoss steering hand pumps replace TRW pumps
Cone changed from low carbon steel to medium carbon steel (1040)
Grain gears now standard on all corn combines
2-speed hydro available on 1460
Improved steering axle: new rims, spindles, and hubs
Rear-wheel assist revised

1983 Mufflers eliminated on 1460/1480
One-piece forged final drive axle assembly
Feeder bottom, door, and hinge changed to 1040 steel
Rocktrap beater changed from 4-blade design to 3-blade, keystock welded on LH end, and beater blades thicker
Rotor kickers standard
3rd lift cylinder available on 1440

1986 Introduction of 1600 Series Axial-Flow Combines
1620 124 H.P. 358 Cu.In. 125 Bu. Grain Tank
1640 150 H.P. 466 Cu.In. 145 Bu. Grain Tank
1660 180 H.P. 466 Cu.In. 180 Bu. Grain Tank
1680 225 H.P. 466 Cu.In. 210 Bu. Grain Tank
Capacity increases of 70% on 1640 and 1660 and 25% on 1680
Increased concave area by 15.5% on 1640 and 1660 and 16% on 1680
Increased separating area by 24% on 1620, 32% on 1640 and 1660, and 41% on 1680
Cage vanes adjustable without removing bolts or concaves and grates
Clean grain augers increased in diameter (7" on 1640 and 1660 and 8" on 1680)
Deeper clean grain elevator cross section (11.1 x 6" on 1640 and 1660 and 11.1 x 8" on 1680)
Tear drop clean grain elevator lower boot
Tapered entry design into clean grain elevator boot
Inclined delivery auger standard on all 1680’s and 1660 rice models
Shaft speed monitor standard (monitors 9 areas, two more, feeder and spreader)
Improved lighting package (6-60 watt halogen lights including one long distance light)
Optional feeder reverser all 1600 (field kits for certain 1400 series)
Introduction of 1020 Flexible Cutterbar Header
1.5" knife system standard on 1020 Flx. Optional on 1010
Cross auger lifts with reel lift for reversing



1989 Introduction of New CDC Engines (4/1/89)
1620 145 H.P. 5.9 Liter 125 Bu. Grain Tank
1640 160 H.P. 5.9 Liter 145 Bu. Grain Tank
1660 190 H.P. 8.3 Liter 180 Bu. Grain Tank
1680 235 H.P. 8.3 Liter 210 Bu. Grain Tank
In-line core radiators replace staggered tupe design
110 amp Bosh alternator replaced 90 amp Motorola with engine deflector shields
Battery sizes upgraded
Coolant level sensor added
Engine aspirator for Navistar engine combines

1990 Audible alarm added to grain-tank full indicator
Right side service access door added on 1640/1660
Heavy-duty cleaning system drive parts: sieve hangers, hanger arms, pitmans, & shafts
Cab heater valve replaced by valve from 7100 Magnum tractors
1991 High visibility reel released for 1020 Flex and 1010 headers
Long cleaning system released for 1680-grain combines
Dual spin-on hydraulic filters on 1680
Electric fuel transfer pump on 1680

1992 Introduction of Field Tracker
92-120" rear axle standard
Fuel line diameter increased to ½" and screen eliminated from tank
Hydraulic reservoir increased from 5 gallons to 8 gallons
New lay-over header lift valve
Accumulator standard
Auxiliary and reel drive pumps combined into one dual pump
Dual spin-on hydraulic filters on 1640/1660 (same as 1680)
2-piece hydrostatic steel lines replaced by a center steel tube with outer rubber hoses with 4-bolt split flange connectors
Rotor coupling bolts changed from grade 5 to grade 8
1620 combine discontinued

1993 Introduction of Second Generation 1600 Series Axial-Flow Combines
1644 180 H.P. 5.9 Liter 145 Bu. Grain Tank
1666 215 H.P. 8.3 Liter 180 Bu. Grain Tank
1688 260 H.P. 8.3 Liter 210 Bu. Grain Tank
Introduction of Cross-Flow Cleaning Fan
Long cleaning system (13.75" added to chaffer and shoe sieve) 25.9% 44/66 and 23.7% on 88
Larger air cleaners on 1666/1688
Water-pump sealed stalk roll bearings on 1000 series cornheads

1994 Introduction of Straw/Chaff spreader system (factory and field codes for long sieve units)
1644 gets 1666/1688 transmision, final drive, and brakes
Optional cold-start package (ether assist and block heater)
Electric fuel pump added on 1644/1666
Radial-seal type engine air filters
Transition cone & rotor cage seam bolts heads treated with tungsten-carbide
Unloading auger spill saver added

1995 Introduction of 2100 Series Axial-Flow Combine
2144 180 H.P. 5.9 Liter 145 Bu. Grain Tank
2166 215 H.P. 8.3 Liter 180 Bu. Grain Tank
2188 260 H.P. 8.3 Liter 210 Bu. Grain Tank
All new cab and styling (23% more total glass area than 1600 series)
Improved stadium-design lighting
New optional lighting package (after cut, side flood, rear work, and service lights)
Theater style lay-out to right-hand console
Mult-function propulsion lever
New A-post instrumentation center
Improved operator ladder
Focalized cab mounting system
New pressure and flow-compensated (PFC) hydraulics and wet brakes
New safety shielding, service platforms, hand rails, and guards
Improved hinged service panels for easier access
AFS field installed AFS systems released (March)

1996 Factory installed AFS systems released (March)

1997 New 13 bolt final drive mounting (previous 7 bolt mount)
Poly skid shoes factory option
New larger cab air filter on right side of cab
Fold-in rear window
Splined feeder jackshaft replaces keyed shaft
Transmission charged from a 3-bolt to a 5-bolt retention pattern on the differential bearing carrier.
Locking collar on final drive shaft couplers replaces bolt
Rear axle center section tubing increased from 5/16" to 3/8"
Drive plate added to rotor drive coupler
Main hydrostatic tubes replaced with hoses
Seals added to front rotor cover
Detents added to LH shields
One-piece cleaning fan hinge rod
Floating hex shaft between front and rear unloading augers
Unloading auger outer elbow housing rivets changed from ¼" to 5/16"

1998 Introduction of 2300 Series Axial-Flow Combines
2344 174 H.P. 5.9 Liter 145 Bu. Grain Tank
2366 240 H.P. 8.3 Liter 180 Bu. Grain Tank
2388 280 H.P. 8.3 Liter 210 Bu. Grain Tank
Tailings volume monitor standard
Deluxe cab standard
Auto temperature control standard
Engine air filter restriction indicator added to A-post display
Engine air intake manifold temperature indicator and feeder shut-off (2388)
Hydraulically driven rotary air screen (2388) (27% larger area)
68x50 - 32h high flotation tire option (1730 Sq. In. contact area) (38% less ground P.S.I.)
600/65-R28 high flotation tire option (710 Sq. In. contact area) (19% less ground P.S.I.)
Rotor skin increased thickness and strength (3 times more resistant to denting)
Three speed rotor gearbox (2388) w/ adjuster lever on left side of cab
New rotor drive belt (27% increased contact area with pulleys) (21% increased service life)
Torque sensing cam angle increased to 39 degree
Charge air cooling with air-to-air aftercooling (2388)
New engine air filter design (38% Larger filter area) (Lower profile)
Radiator spinner blade standard

1999 Introduction of AFS Universal Displays
Optional extended wear package
Grooved torque sensing pulleys standard
Reverse rotation on left side auger in auger bed
Optional edible bean package
Ladder reworked with flexible bottom step
Improved sealing on feeder position potentiometers
Draper headers released (limited production)
Poly snouts standard on 1000 series narrow corn heads

2000 Elevator-mount moisture sensor on AFS combines
New HVAC system with digital display (like MX Magnum)
Air intake is not drawn from engine radiator air chute instead of rotary air screen
Greasable hydrostatic drive hub
2388 rear axle standard on 2344/66 combines
2388 rotor cage constructed of AR235 wear-resistant steel
Cast shaker pivot support channels
Precision-drilled holes in elevator slip clutch drive hub
Stalk roll bearing shield on 1000 series cornheads

2001 Hydraulic feeder reverser
4-groove kevlar cord feeder drive belt
3rd bearing on rocktrap
Rochelle rotor available
External straw chopper adjustment and taller "coined" blades
Predrilled for external sieve adjusters
Sieve viewing door and light
12-row ready package for 2388 (4WD)
122% larger toolbox
180 gallon fuel tank replaces 123 gallon on 2388
LH shields can be opened without lifting up side sheets
16-weight bracket available
Hillco leveling available from the factory
2200 series cornheads introduced

2002 Steel pin replaces cotter pin in upper feeder shaft
1-piece concaves
External sieve adjusters available as factory option
Push-button chaff spreader coupler
Curved chaff spreader bats factory option
2-speed straw spreader pulley
Grain drain filler plates standard in grain tank
Clean grain auger inlet cone standard on 2388 – 15% more clean grain elevator capacity
Belt-engage separator drive on 2388 replaces wet PTO clutch (with 5-rib separator drive belt)
130 gallon fuel tank on 2344/66
14.9-24 8PR R1 rear tires and heavy-duty rims standard on 2344/66
12-row ready package available for 2WD combines
Hinged right rear side panel with gas strut
Grease banks for steering axle, unloading auger elbow, and front rotor bearing
Rotor gearbox speed adjusting lever moved to RH side of cab
Feeder predrilled for Black Ace silencer kit
New design auger fingers on 1020 grain heads (spring pin, broken fingers are collected in auger)
Mechanical linkage AHHC replaces cable on 1020 grain heads

2003 2344 combine discontinued
New AFX rotor on 2388: 5-25% more throughput
Larger rotor drive pulleys, 900-lb. Rotor drive spring, longer seamless rotor belt
Wire cloth mesh hydraulic drive rotary air screen, relocated to RH side of combine,
direct-flow design, with swing-open door
Square wave technology on radiator and charge air cooler to prevent "deep-core" plugging
2366 now air-to-air aftercooled, 250HP
Muffler standard
New Air cleaner design
New operator’s seat with adjustable LH armrest and removable seat cushions
Heavy-duty 2WD rear axle with dual-steering cylinders optional on 2388

475 Posts
Discussion Starter · #5 ·
Thanks! That's exactly what I needed. Don't suppose there is any thing out there for STX tractors?

475 Posts
Discussion Starter · #6 ·
Just looking for info on STXs from 00 up. I'm keeping my eyes open for a steal and I'd like to know what improvements they made from year to year.
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