7403939 500-Hour Maintenance Filter Kit is a replacement 500-hour maintenance filter kit for Bobcat excavators, including 319. The kit bundles 4 service parts: hydraulic filter, fuel filter with water separator, engine oil filter and air filter, so one order covers the scheduled filter change at 500 hours. Supplied by LIONKITS.
7403939 500-Hour Maintenance Filter Kit Specifications
- Product Type: 500-Hour Maintenance Filter Kit
- Service Interval: 500 hours
- Part Number: 7403939, 6653336, 6667352, 6671057, 6673752
- Compatible Brand: Bobcat
- Machine Type: Excavator
- Kit Contents: 4 parts
What Is Included in the 7403939 500-Hour Maintenance Filter Kit
- 1 × Hydraulic Oil Filter – 6653336
- 1 × Fuel Filter with Water Separator – 6667352
- 1 × Engine Oil Filter – 6671057
- 1 × Outer Air Filter – 6673752
Bobcat Models Compatible with the 7403939 500-Hour Maintenance Filter Kit
- Bobcat Excavator: 319
Your model is not listed? Contact LIONKITS via live chat or email with your machine model and nameplate photo, and we will confirm compatibility.
When Is the 500-Hour Service Due?
Scheduled maintenance keeps the engine, fuel, hydraulic and air systems clean. A 500-hour service calls for fresh filters at those intervals. Typical Bobcat schedules change the engine oil and filter first, then the fuel and hydraulic filters at 500 hours, with a larger service at 1000 hours that adds air filter and fuel/water separator checks. A maintenance filter kit bundles the parts for that interval into one order, which is more convenient than buying each filter separately. Always follow the operator manual for the intervals of your model.
Signs the Filters or Parts Need Replacing
- Engine oil filter: change it with every oil service; a clogged filter lets oil bypass unfiltered and shortens engine life.
- Fuel filter and water separator: hard starting, loss of power or water in the separator bowl mean the filter is due.
- Hydraulic filters: sluggish hydraulics, a restriction warning or hot hydraulic oil point to a loaded filter.
- Air filters: black smoke, weak power or a restriction indicator tell you the air filter is clogged.
- Breather or hydraulic cap: a cracked or clogged cap lets dirt in and pressure out.
These symptoms overlap with other fuel, hydraulic and air system problems, so check the basics first.
How to Order and Install the 7403939 500-Hour Maintenance Filter Kit
- Confirm your machine model, engine and the part number of the kit before ordering; filter styles differ between model series and serial ranges.
- Compare the kit contents with your current filters (for example spin-on or cartridge hydraulic filters) before ordering.
- Replace all filters in the kit at the same time, using the oil and fluid grades listed in the operator manual.
- Bleed air from the fuel system after changing the fuel filter, and run the engine to check for leaks.
- Dispose of used filters and oil according to local regulations.
Frequently Asked Questions
What is the 7403939 500-Hour Maintenance Filter Kit?
The 7403939 500-Hour Maintenance Filter Kit is a replacement 500-hour maintenance filter kit for Bobcat excavators under part numbers 7403939, 6653336, 6667352, 6671057.
What does the 7403939 500-Hour Maintenance Filter Kit include?
It includes hydraulic filter, fuel filter with water separator, engine oil filter and air filter, 4 parts in total; the full list is shown above.
Which Bobcat models does the 7403939 500-Hour Maintenance Filter Kit fit?
It is listed for 319. If you are unsure, send your machine nameplate to LIONKITS for confirmation.
What is a maintenance filter kit?
It is a set of filters and service parts matched to a service interval, such as 500 or 1000 hours, so the scheduled filter change is covered by one part number.
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