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Ford 7840 Tractor Maintenance

The Ford 7840 is a PowerStar 40-series row-crop tractor. This model was manufactured between 1991 and 1995. The Ford 7840 tractor is powered by 401 cu.in (6.6 L) Ford Genesis four stroke six-cylinder liquid-cooled diesel engine with operating power of 100 hp (73.5 kW) at 2100 rev/min.

The Ford 7840 was fitted with 4 types of transmission. Type 1: 8x2 EconoShift constant mesh transmission. Type 2: 16x4 Dual Power transmission with a 2-speed powershift. Type 3: 12x12 Synchro Shift synchronized transmission. Type 4: 16x16 Pulse Command transmission with a 4-speed powershift.

Max. forward speed - 19.2 mph (30.9 kph), maximum reverse speed - 19.1 mph (30.7 kph). The open center hydraulic system includes a gear pump with rated capacity of 9.3 gpm (35.2 lpm). The hydraulic pressure is 182 bar (2650 psi). The Ford 7840 was equipped with 10.0x16 front tires and 18.4x30 rear tires. The wheelbase is 106.3" (2700 mm) for 2WD models, or 103.3" (2623 mm) for 4WD models.

Refill Capacities
Engine oil capacity, qts (L) 22.0 (20.8)
Engine coolant capacity (w/Cab), qts (L) 22.8 (21.5)
Engine coolant capacity (w/o Cab), qts (L) 21.2 (20.0)
Transmission/Hydraulic capacity (SynchroShift), gal (L) 15.0 (56.8)
Transmission/Hydraulic capacity (ElectroShift), gal (L) 16.0 (60.5)
Front axle oil capacity, qts (L) 6.6 (6.2)

Recommended Oil and Fluid
Engine oil type SAE 15W-40, 10W-30, SAE 10W-40, 15W-30
Engine coolant type Antifreeze/Coolant
Transmission/Hydraulic fluid type 134D, SAE 10W-40
Front axle oil type 134D, SAE 10W-40

Service Intervals
Check engine oil level Every 10 hours
Check transmission/hydraulic fluid level Every 10 hours
Check engine air filters Every 10 hours
Check coolant level in radiator Every 10 hours
Check battery and clean terminals Every 50 hours
Check front axle oil level Every 50 hours
Inspect and adjust alternator belt Every 100 hours
Lubricate axle hub bearings Every 100 hours
Change engine oil Every 300 hours
Replace engine oil filter Every 300 hours
Clean engine air filters Every 300 hours
Clean engine fuel filter Every 300 hours
Adjust parking and service brakes Every 300 hours
Replace engine air filters Every 600 hours
Check and adjust engine idling Every 600 hours
Check and adjust valve clearance Every 600 hours
Replace engine fuel filter Every 1200 hours
Change transmission/hydraulic fluid Every 1200 hours
Change front axle oil Every 1200 hours
Replace hydraulic oil filter Every 1200 hours
Replace engine coolant filter Every 1200 hours
Replace cab air filter Every 1200 hours
Flush cooling system and add new coolant Every 1200 hours

Replacement Parts
Engine oil filter part number 86605897, F2NN6714AB
Engine fuel filter part number 86555246, F0NN9176BA
Engine air filter part number (Primary) 47372276, 82008596, 82008597
Engine air filter part number (Secondary) 82008601, E9NN9R500AB
Hydraulic oil filter part number 84248043, 47622189, F0NNB486BB/F0NNB486AA
Engine coolant filter part number E8NN8A424BB
Cab air filter part number 47548101, 82033107




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JD 1026R JD 3650 JD 6400 JD 7810
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MF 250 MF 690 MF 3060 MF 6180
NH TC48DA NH M100 NH T7550 NH 8560
CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294