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John Deere 6620 Maintenance
The
John Deere 6620 Premium is a 6020 series 4x4 utility tractor. This model was
manufactured from 2001 to 2006. The John Deere 6620 tractor is powered by 414.4
cubic inches John Deere 6068T 4V-CR 4-stroke 6-cylinder turbocharged diesel
engine with a maximum power of 130 Hp (96.9 kilowatt) and 535 Nm (396 lb-ft) of
peak torque at 1700 rpm.
The John Deere 6620 Premium is equipped with 3 types of transmission.
Type 1: 24x24 PowrQuad Plus partial powershift transmission. Type 2:
24x24 AutoQuad transmission.
Type 3: AutoPowr variable transmission (IVT) with infinite forward and
reverse gears. Maximum travel speed (forward and reverse): 25 mph (40
km/h). The closed center hydraulic system with load-sensing control has
an axial-piston or gear-driven pump with a rated capacity of 25.4 gpm
(96.1 lpm). The main relief pressure is 300 bar (2900 psi). The John
Deere 6620 Premium is fitted with 420/70R28 front tires and 18.4R38 rear
tires. The wheel base is 104.3" (2640 mm). The tractor is compatible
with a John Deere 661 loader with a maximum lift height of 166 (4220),
or John Deere 731 loader with a lift capacity at full height of 4255 lb
(1930 kg).
| Engine oil capacity, gal (L) |
5.2 (19.5) |
| Engine coolant capacity, gal (L) |
6.3 (24.0) |
| Hydraulic system capacity (AutoQuad transmission), gal (L) |
13.7 (52.0) |
| Hydraulic system capacity (AutoPowr transmission), gal (L) |
15.9 (60.0) |
| Hydraulic system capacity (PowrQuad transmission), gal (L) |
13.7 (52.0) |
| Front axle oil capacity, gal (L) |
1.7 (6.6) |
| Front PTO oil capacity, gal (L) |
0.9 (3.5) |
| Recommended Oil and Fluid |
| Engine oil type |
Plus-50, Torq-Gard Supreme, SAE 10W-40, 15W-40, 5W-30. API Service category CG-4, CF-4 |
| Engine coolant type |
Cool-Gard Premix Coolant |
| Hydraulic/Transmission fluid type |
Hy-Gard, Low Viscosity Hy-Gard, JDM J20C, J20D |
| Front axle oil type |
Hy-Gard, JDM J20C |
| Check hydraulic/transmission fluid level |
Every 250 hours |
| Check front axle oil level |
Every 250 hours |
| Clean battery and check electrolyte level |
Every 250 hours |
| Lubricate axle hub bearings |
Every 250 hours |
| Change engine oil |
Every 250 hours |
| Replace engine oil filter |
Every 250 hours |
| Clean cab air filters |
Every 250 hours |
| Replace hydraulic/transmission oil filter (AutoPowr) |
Every 500 hours |
| Change engine fuel filter |
Every 500 hours |
| Replace activated carbon filter |
Every 500 hours |
| Lubricate rear axle bearings |
Every 500 hours |
| Replace hydraulic/transmission oil filter |
Every 750 hours |
| Replace hydraulic pump filter |
Every 750 hours |
| Replace front PTO oil filter |
Every 750 hours |
| Check and adjust engine idling |
Every 750 hours |
| Change hydraulic/transmission fluid (AutoPowr) |
Every 1000 hours |
| Change hydraulic/transmission fluid |
Every 1500 hours |
| Change front axle oil |
Every 1500 hours |
| Replace primary engine air filter |
Every 1500 hours |
| Replace secondary engine air filter |
Every 1500 hours |
| Replace cab air filters |
Every 1500 hours |
| Change front PTO oil |
Every 1500 hours |
| Check and adjust valve clearance |
Every 2000 hours |
| Flush cooling system and add new coolant |
Every 3000 hours |
| Engine oil filter part number |
RE504836 |
| Engine fuel filter part number |
RE153517, RE62419 |
| Primary engine air filter part number |
AL172781 |
| Secondary engine air filter part number |
AL150288 |
| Cab recirculation air filter part number |
L152026, L155288 |
| Cab activated carbon filter part number |
AL158986 |
| Cab fresh air filter part number |
AL177185, AL177184 |
| Hydraulic/transmission oil filter part number |
AL156625/AL118036/AL203060, AL118321/AL203061 (AutoPowr) |
| Front PTO oil filter part number |
L114404 |
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| Farm Tractors Technical Specifications |
