Service parts for the 644
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Emissions | Tier 3 |
| Dry weight | 18160 kg |
Maintenance & consumables
for the John Deere POWERTECH™| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 500 hr | |||
| Fuel filter | RG12782A | 250 hr | Amazon eBay | ||
| Oil filter | — | 250 hr | |||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | 1000 hr | |||
| Coolant filter | — | ||||
| Oil | — | 375 hr | |||
| Spark plug | — |
Compatible filters for the John Deere POWERTECH™ — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
Common questions
What engine is in the John Deere 644?
The John Deere 644 is powered by the John Deere POWERTECH™ engine.
What fuel does the John Deere 644 use?
The John Deere 644 runs on diesel.
How much does the John Deere 644 weigh?
The John Deere 644 has a dry weight of 18160 kg (40035 lb).
What oil filter does the John Deere 644 use?
The John Deere 644 uses oil filter part numbers JOHN DEERE RE519987, JOHN DEERE DZ118286.
What fuel filter fits the John Deere 644?
The John Deere 644 uses fuel filter part number RG12782A.
Which air filter part number does the John Deere 644 take?
The John Deere 644 uses air filter part numbers JOHN DEERE AL119839, JOHN DEERE AL150288.
Parts
55| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 070185 | FILTER, OIL | 1 | Oil filter | Amazon eBay $30.00 NAPA $3.59 FridayParts $45.99 |
| 072347 | SPARK PLUG | 2 | Spark plug | eBay $1.99 |
| 075281 | SWITCH, HIGH TEMPERATURE | 1 | Sensor | Amazon eBay $39.00 |
| 0851100188 | Pre Cleaner (GN570) | Air filter | buy | |
| 086444 | Air Filter (GN570) | Air filter | buy | |
| 099236 | Switch Oil Pressure Switch 8 PSI 1 Pole | 1 | Sensor | eBay $9.98 FridayParts $11.41 |
| 4J-0522 | Seal | 4 | Seal | Amazon eBay |
| 5501407 | Alternator 70 AMP, 135 Degree Mount, 3-1/2"Pulley | Alternator | Amazon eBay | |
| AF843 | Air | Air filter | Amazon eBay $18.99 NAPA $15.58 KuduParts $8.00 | |
| AN500T0046 | STARTER MOTOR | Starter | Amazon eBay | |
| AN500T0057 | STARTER DRIVE | Starter | Amazon eBay | |
| AN500T0101 | ALTERNATOR | Alternator | Amazon eBay | |
| TY6389 | John DeerePLUS-50 ™oil | 1 | Oil | Amazon eBay |
| 0921340125 | Carburetor (GN570) | Service part / kit | buy | |
| 216-0234 | Front Dozer -- 854G & 844 | Service part / kit | Amazon eBay | |
| 219-0604 | Radiator Guard – 992G/990 Wheel Loaders & 854G/844 Wheel Tractors | Service part / kit | Amazon eBay | |
| 223-2037 | ROPS Forward - 992G/990 Wheel Loaders & 854G/844 Wheel Tractors | Service part / kit | Amazon eBay | |
| 40085392 | NON EMISSIONS | Service part / kit | Amazon eBay | |
| 40087510 | UTEX WITH NEW BODY OBSOLETE: USE 40085395 | Service part / kit | Amazon eBay | |
| 40146267 | EXTENSION GAUGE-.060 ('GO') | 1 | Service part / kit | Amazon eBay |
| 40146268 | EXTENSION GAUGE-.100 ('SET') | 1 | Service part / kit | Amazon eBay |
| 40146269 | EXTENSION GAUGE-.140 ('NO GO') | 1 | Service part / kit | Amazon eBay |
| AL180326 | Front Fenders 480 mm (18.9 In) Wide - Recommended for use with 440/65R24, 480/65R24 and 44X18-20 In Tires. Requires Mounting Bracket and Hardware Kit (BSJ10307) ordered separately. | $179.79 | Service part / kit | Amazon eBay $319.94 |
| AL180327 | Front Fenders 420 mm (16.5 In.) Wide - Recommended for use with 13.6-24 In. Tires. Requires Mounting Brackets and Hardware Kit (LVB25776 Or BSJ10307) ordered separately. | $156.92 | Service part / kit | Amazon eBay |
| AL180330 | Front Fenders 370 mm (14.6 In.) Wide - Recommended for use with 13.6-24 In. Tires. Requires Mounting Brackets and Hardware Kit (LVB25776 Or BSJ10307) ordered separately. | $137.89 | Service part / kit | Amazon eBay $172.36 |
| AL203265 | Service Horn - Requires bolt and nut 19m7865 and 14m7298. | $46.07 | Service part / kit | Amazon eBay $99.99 |
| AL212683 | Mounting Parts - Display Mount RAM | 1 | Service part / kit | Amazon eBay |
| BSJ10307 | Turnable Front Fender Mounting brackets and hardware kit - Requires Fenders (AL180328, AL180330, AL180327) ordered separately through parts. | $957.00 | Service part / kit | Amazon eBay |
| BSJ10323 | Electrohydraulic (EH) Hitch Right Fender Switch Kit - Requires Electrohydraulic Hitch control equipped tractor. Compatible with cab tractors only. Must order harness RE216951 to complete the installation. | $658.90 | Service part / kit | Amazon eBay |
| BSJ10550 | Front 3-Point Hitch | $4,059.00 | Service part / kit | Amazon eBay |
| BSJ10563 | PTO Fender | $93.50 | Service part / kit | Amazon eBay |
| D05223ST | Engine Repair Stand (Heavy Duty) | 1 | Service part / kit | Amazon eBay |
| L154682 | Rear Axle 1.6 in. Extension (40 mm) | 2 | Service part / kit | Amazon eBay $332.44 |
| L154683 | Rear Axle 1.2 in. Extension (30 mm) | 2 | Service part / kit | Amazon eBay $342.18 |
| L154684 | Rear Axle 4.4 in. Extension (111 mm) | 2 | Service part / kit | Amazon eBay $1095.00 |
| PF80459 | Bracket, Arm, RAM Double Socket | 1 | Service part / kit | Amazon eBay $37.37 |
| PF80460 | Mount - RAM U-Bolt | 1 | Service part / kit | Amazon eBay |
| R133359 | Drawbar - Offset | 1 | Service part / kit | Amazon eBay $264.54 |
| R197239 | Heavy-Duty Drop Drawbar | $670.26 | Service part / kit | Amazon eBay $830.47 |
| RE19428 | Safety Chain Support Kit | 1 | Service part / kit | Amazon eBay $200.38 |
| RE242110 | Drawbar - Hammerstrap and Chain Clevis Kit | $162.80 | Service part / kit | Amazon eBay |
| RE39830 | Drawbar Clevis Kit (Hammer Strap) - Offset Drawbar | 1 | Service part / kit | Amazon eBay |
| RE574454 | 38.1-mm (1.5–in.) ball mount and socket arm | 1 | Service part / kit | Amazon eBay |
| RG12684 | Engine Identification - Medallion on the rocker arm cover identifying each engine as a John Deere POWERTECH™ engine. | Service part / kit | Amazon | |
| RG12685 | Engine Identification - Medallion on the rocker arm cover identifying each engine as a John Deere POWERTECH™ engine. | Service part / kit | Amazon | |
| RG12687 | Engine Identification - Medallion on the rocker arm cover identifying each engine as a John Deere POWERTECH™ engine. | Service part / kit | Amazon | |
| RG12688 | Engine Identification - Medallion on the rocker arm cover identifying each engine as a John Deere POWERTECH™ engine. | Service part / kit | Amazon | |
| RG12689A | Engine Identification - Medallion on the rocker arm cover identifying each engine as a John Deere POWERTECH™ engine. | Service part / kit | Amazon eBay | |
| RG12960 | 2.4L Engine - Front End Assembly | Service part / kit | Amazon | |
| RG12961 | 3.0L Engine - Front End Assembly | Service part / kit | Amazon | |
| RG12962 | 2.4L Engine - Rear End Assembly | Service part / kit | Amazon | |
| RG12963 | 3.0L Engine - Rear End Assembly | Service part / kit | Amazon | |
| TK225C100 | Weld-on Center | Service part / kit | Amazon eBay $43.99 | |
| TS677 | Install Fan Guards | 1 | Service part / kit | Amazon eBay |
| UC17356 | RAM Mount Vesa Bracket 1.5 | 1 | Service part / kit | Amazon eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Operator's manual (John Deere)Reference (John Deere)Reference — 20180314-NJPA-Contract (John Deere)Parts manual — John-Deere-Construction-Product-Support-Catalog-PCUSS19 (John Deere)Parts manual — wheel-loaders-g-series-dka544g (John Deere)
This page was generated from the 5 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.