John Deere 6420 Oil Filter P550779 B7322 GM32809 LFP4836 C-7607 C7607

What does P550779 fit?

KEESTRACK  ARGOARGO 1060 BACKENBRECHERB 3B 4CRUISER 1060
KLEEMANN REINER  MSS 502i EVOMSS 802i Evo
KOHLER  33 EFOZD40 EFOZD40 EOZD50 EFOZD55 EOZD65 EOZD70 EFOZD80 EFOZD80 EOZD99 EOZD
LIEBHERR  D 504 TIL 512L 514L 514L 514L 514L 514 Stéréo Gen6L 518 442-13 LITRONICTL 445-10 LITRONICTL 445-10 LITRONICTL 445-10 LITRONICTL 445-10 LITRONICTL 451-10TL 451-10TL 451-13TL 451-13
LUGGER  L 1064 AL 1064 D/T1L 1066 AL 1066 HL 1064 T1NL 1064 T23NL 1064 T2/H1NL 1066 H23NL 1066 H2/H3NL 1066 H 33NL 1066 H 4NL 1066 T/H1

MANITOU  MHT 790-104 JD H ST4-S1MHT 790-104 JD H ST4 S1MLT 840-145 PSJD ST4 S1MLT 845-115 PSJD ST4 S2MLT 845-115 PSJD ST4 S2MLT 960-104 JD ST4 S1MLT 960-104 JD ST4 S1MLT 960-104 JD ST4 S1
RENAULT AGRI  CELTIS 426CELTIS 436CELTIS 446CELTIS 456 RZ
SDMO  J 110 KJ 220 C2J 220 KJ 250 KJ 66J 66 C2J 66 C 3J 88 KJS 200R 110 C 2R 110 C 2R 110 C 2R 110 C 3R 110 C 3R 110 C 3R 110 C 3R 110 C 5R 110 KR 135 C3R 135 KR 165 C 2R 165 C 3R 165 C 3R 220 C 3R 220 KR 66 C 2R 66 C 3R 66 C 3R 90R 90 C 2R 90 C 3
VERMEER  D 24 X 40 SERIE IID 36 X 50 SERIE ID 36 X 50 SERIE IID 40 X 55 S3D 80 X 100 SERIE II

Performance John Deere 6420 Oil Filter P550779 B7322 GM32809 LFP4836 C-7607 C7607

Q: What are the specifications for P550779?

P550779 is a full flow rotary oil filter from Donaldson brand, mainly used for engine lubrication system protection of heavy equipment such as construction machinery and tractors.
The key specification parameters are as follows:
• Outer diameter: 93 millimeters (3.66 inches)
Thread size: M92 x 2.5
• Length: 155 millimeters (6.10 inches)
• Filter layer material: Glass fiber 
• Skeleton material: stainless steel 
Working temperature: 120 ℃ 

Q: How to Replace Oil Filter for John Deere 6420 Oil Filter?

The basic principle of replacing the oil filter of the John Deere 6420 tractor is similar to that of a car, but special attention should be paid to the specialized filter element and torque requirements used for this model.

Replacement steps

1. Preparation: Park the tractor on a flat surface, turn off the engine, and wait for it to cool down. Prepare new oil filter, new oil, oil filter wrench, oil pan, gloves, and cleaning cloth.
2. Drain old engine oil: Find the drain plug of the oil pan, place the oil pan under it, use a wrench to unscrew the drain plug, and completely drain the old engine oil. After the discharge is completed, clean the drain plug and reinstall it, tightening it to the manufacturer's specified torque (usually about 30 Nm).
3. Disassemble the old filter: Place an oil pan under the oil filter, use a special oil filter wrench, rotate counterclockwise and remove the old oil filter. Note that a small amount of engine oil may flow out during the disassembly process.

4. Install new filter:

Before installing the new filter, apply a small amount of new engine oil to the filter sealing ring to ensure sealing and facilitate installation. Then, tighten the new filter clockwise by hand until the sealing ring is fully in contact with the mounting seat.
5. Tighten the filter: After the sealing ring contacts the installation surface, use an oil filter wrench to tighten the filter by about three-quarters of a turn (3/4 turn). Do not overtighten to avoid damaging the sealing ring and causing leakage. Some data indicates that the tightening torque is about 15 Nm, but using "3/4 turn" as the general operating standard is more reliable.

6. Add new engine oil: Add the specified model and capacity of new engine oil through the engine oil filling port. After filling, wait for a few minutes for the oil to fully flow back, then check the oil dipstick to ensure that the level is between the "MIN" and "MAX" marks.
7. Check and start: Start the engine, let it run for 3-5 minutes, and then turn off the engine. Check the oil level again and replenish it. Finally, carefully inspect the oil filter and drain plug for any leakage.

Precautions

• Synchronous replacement: It is recommended to replace the oil filter while changing the engine oil to ensure that the engine lubrication system is clean and efficient.
• Use specialized tools: Be sure to use an oil filter wrench to avoid damaging the filter housing with pliers or other tools.
Lubrication of sealing ring: Applying new engine oil to the sealing ring is a key step, which can effectively prevent the sealing ring from twisting or being damaged during installation.
• Waste disposal: Used engine oil and filters should be handed over to professional organizations for recycling and disposal to avoid environmental pollution.

Q: What clogs an oil filter?

Oil filter blockage often stems from multiple factors. These include oil quality, usage conditions, and maintenance practices. Below are common causes of clogged oil filters.

Using low-quality engine oil accelerates filter element pollution. Inferior oil with high impurity content leads to blockage. Expired or degraded oil also causes similar issues.

Failing to replace oil and filters long-term increases blockage risk. The filter element collects metal debris over time. Oil sludge and carbon deposits build up, eventually clogging it.

Internal engine wear produces metal particles during operation. Components like cylinders and bearings wear down. These particles circulate in oil and get trapped by the filter.

External pollutants can enter the lubrication system. Dust or impurities mix in during refueling. They contaminate oil and block the filter element through ventilation or ports.

Low-quality filter elements fail to filter efficiently. Their weak structures damage easily during use. This reduces filtration effectiveness and speeds up blockage.

Improper installation of oil filters causes problems. Incorrect sealing ring placement leads to leaks. Contaminated bases or loose threads affect bypass valve operation. These issues indirectly block filters or raise pressure abnormally.

To prevent blockages, follow maintenance manual intervals. Change engine oil and filters regularly. Use high-quality oil from reputable manufacturers.