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International Harvester 3688 Technical Data

International Harvester 3688 Engine

Engine Model ................... International Harvester D436
Engine Type ................... Diesel, 4-stroke 6-cylinder water-cooled
Number of Cylinders ................... 6
Displacement, cu in (L) ................... 436 (7.14)
Engine Bore, in (mm) ................... 4.30 (109.0)
Engine Stroke, in (mm) ................... 5.00 (127.0)
Aspiration ................... Naturally aspirated
Rated Engine Power, hp (kW) ................... 125.0 (92.6)
Rated Engine Speed, rpm ................... 2400
Idle Speed, rpm ................... 900-2400
Compression ................... 16:1
Firing Order ................... 1-5-3-6-2-4
Lubrication System ................... Pressure
Oil Filter ................... 2 full flow spin on cartridges
Fuel Filter ................... Primary and final paper spin-on cartridges
Air Cleaner ................... Dual dry element
Fuel Tank Capacity, gal (L) ................... 50.0 (189.3)
Oil Capacity, qts (L) ................... 14.0 (13.2)
Coolant Capacity, qts (L) ................... 26.0 (24.6)
Electrical System Rating, Volts ................... 12

IH 3688 Power Take-Off

PTO Operational Type ................... Independent
PTO Horsepower, hp (kW) ................... 113.0 (84.3)
PTO Speed, rpm ................... 540/1000
PTO / Engine Speed, rpm ................... 540/2106
PTO / Engine Speed, rpm ................... 1000/2072

Transmission Configuration

Transmission Type ................... Partial powershift
Gearbox Type ................... 16F/8R
Number of Forward Gears ................... 16
Number of Reverse Gears ................... 8
Clutch Type ................... Cerametallic disc
Oil Capacity, qts (L) ................... 90.0 (85.2)
Maximum Forward Speed, mph (kph) ................... 19.1 (30.7)
Maximum Reverse Speed, mph (kph) ................... 9.4 (15.1)

International 3688 Wheels and Tires

Drive Wheels ................... 2WD/4WD
Steering Configuration ................... Front steer
Steering System ................... Hydrostatic power
Brakes Type ................... Hydraulic wet disc
Front Tire Size ................... 11L-15
Rear Tire Size ................... 18.4x34
Front Tread, in (mm) ................... 60-84 (1520-2130)
Rear Tread, in (mm) ................... 66-128.5 (1675-3260)

IH 3688 Hydraulic System

Hydraulic System Type ................... Closed center
Implement Pump Type ................... Variable displacement pump
Implement Pump Flow, gpm (Lpm) ................... 18.0 ([68.1)
Steering Pump Flow, gpm (Lpm) ................... 12.0 (45.4)
Hydraulic Fluid Capacity, gal (L) ................... 28.5 (108.0)
Number of Standard Remote Valves ................... 2/4
3-Point Hitch Category ................... 2
Draft Sensing or Lift Control ................... Draft sensing

Dimensions and Weight

Wheelbase, in (mm) ................... 105 (2660)
Length, in (mm) ................... 184 (4670)
Height (Cab), in (mm) ................... 112 (2840)
Overall Width, in (mm) ................... 102 (2590)
Ground Clearance, in (mm) ................... 13 (330)
Weight (Shipping), lb (kg) ................... 11300 (5125)
Weight (Operating), lb (kg) ................... 13200 (5987)