Row CropPerformance profile
International Harvester 3688
The International Harvester 3688 is a row crop tractor built from 1981 to 1985. It has a 2WD chassis and power steering, making it easy to handle in the fields. The tractor has a partial power shift transmission with 16 forward gears and 8 reverse gears, giving farmers lots of options for different tasks. Under the hood, the 3688 has a 6-cylinder diesel engine made by International Harvester. The engine is liquid-cooled and has above average displacement at 436 cubic inches. It produces 113 horsepower, which is about average for tractors of its time. The tractor weighs 13,200 pounds and has a three-point hitch in the back for attaching tools. It also has two PTO speeds: 540 and 1000 rpm. The cab comes with heating and air conditioning for farmer comfort. With its 105-inch wheelbase and sturdy build, the 3688 is a reliable workhorse for various farming jobs.
ManufacturerInternational HarvesterPower113 hpEngine6-cylTransPartial power shift
Image not recorded
Quick specs
- Category
- Row Crop
- Engine Power Output
- 113hp
- Operating Weight
- 13,200 lb
- Transmission
- Partial power shift
At a glance
How the 3688 compares
vs. Row Crop medianDistribution
Engine Power (hp)
Across all Row Crop tractors
113 hp · 34th
This model
12
Median 138 hp
283
This modelRow Crop tractorsMediann = 1,206
The 3688 ranks at the 34th percentile for engine power among recorded row crop tractors.
Overview
About the International Harvester 3688
The International Harvester 3688 is a row crop tractor built from 1981 to 1985. It has a 2WD chassis and power steering, making it easy to handle in the fields. The tractor has a partial power shift transmission with 16 forward gears and 8 reverse gears, giving farmers lots of options for different tasks. Under the hood, the 3688 has a 6-cylinder diesel engine made by International Harvester. The engine is liquid-cooled and has above average displacement at 436 cubic inches. It produces 113 horsepower, which is about average for tractors of its time. The tractor weighs 13,200 pounds and has a three-point hitch in the back for attaching tools. It also has two PTO speeds: 540 and 1000 rpm. The cab comes with heating and air conditioning for farmer comfort. With its 105-inch wheelbase and sturdy build, the 3688 is a reliable workhorse for various farming jobs.
Full specifications
Every recorded spec
General
| Manufacturer | International Harvester |
|---|---|
| Model | 3688 |
| Category | Row Crop tractor |
| Type | 4x2 2WD |
| Years built | 1981–1985 |
| Operating weight | 13,200lb |
Engine
| Make | International Harvester |
|---|---|
| Model | D436 |
| Power | 113hp |
| Cylinders | 6 |
| Displacement | 436ci |
| Bore | 4.3in |
| Stroke | 5in |
Transmission
| Type | Partial power shift |
|---|---|
| Forward gears | 16 |
| Reverse gears | 8 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Power |
| Brakes | Hydraulic wet disc |
| Cab | Cab |
Hydraulics
| Type | Open center |
|---|
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Length | 184in |
|---|---|
| Width | 102in |
| Height | 112in |
| Operating weight | 13,200lb |
Capacities
| Cooling system | 6.5gal |
|---|
Head to head
3688 vs. Row Crop median
How the International Harvester 3688 compares to other Row Crop tractors
| Spec | This model | Row Crop median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 113 hp | 138 hp | -18% | 34th |
| Engine Displacement | 436 ci | 391 ci | +12% | 75th |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 16 | 16 | at median | 50th |
| Operating Weight | 13,200 lb | 12,307 lb | +7% | 57th |
| Length | 184 in | 180 in | +2% | 54th |
| Width | 102 in | 91.2 in | +12% | 91st |
| Height | 112 in | 114 in | -1% | 44th |
Medians and percentiles are computed from the row crop tractors in our database with a recorded value for each spec (sample sizes 806–1,417 models).
Compare to tractors with similar specs
Commonly compared International Harvester tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| International Harvester 1206 | 110 hp | 10,115 lb | 1965–1967 | Compare → |
| International Harvester 1046 | 108.5 hp | 8,929 lb | — | Compare → |
| International Harvester 1066 | 108 hp | 12,148 lb | 1971–1976 | Compare → |
| International Harvester A-866 | 121 hp | — | — | Compare → |
| International Harvester 1055 | 100 hp | 9,635 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Agco LT95A | 111.6 hp | 11,070 lb | — | Compare → |
| Belarus 1025 MIG | 115 hp | 9,469 lb | — | Compare → |
| AGCO LT85A | 110.1 hp | 10,605 lb | — | Compare → |
| AGCO LT90A | 110 hp | 8,820 lb | — | Compare → |
| Agrinar T-110 | 110 hp | — | — | Compare → |
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FAQ
Common questions
When was the International Harvester 3688 in production?
International Harvester 3688 production started in 1981 and ended in 1985.
What hitch category is the International Harvester 3688?
The International Harvester 3688 uses a Category II hitch.
How much horsepower does the International Harvester 3688 have?
The International Harvester 3688 produces 113 hp from its 6-cylinder engine. Engine displacement is 436 ci.
How much does the International Harvester 3688 weigh?
The International Harvester 3688 weighs about 13,200 lb in operating condition.
What transmission is in the International Harvester 3688?
Transmission on the International Harvester 3688 is Partial power shift, with 16 forward speeds.
What type of hydraulic system does the International Harvester 3688 use?
Hydraulics on the International Harvester 3688 are Open center.
What maintenance does the International Harvester 3688 require?
Like any tractor, the International Harvester 3688 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.