Owner’s manual
What company makes Craftsman air compressors?
Craftsman is the brand name; the actual company that made a Craftsman air compressor depends on the specific model and production run. For Craftsman model 919176330, the most reliable way to identify the maker is to match the model and code numbers on the tank label to the manufacturer information listed in the owner's manual.
We recommend using the labels on the air tank and motor because they list the manufacturer details you need for parts and service.
- Find the model number label on the front of the air tank saddle.
- Find the code number on the oil label on the side of the tank.
- Look for the manufacturer’s number (ASME code compressors may have a welded data plate on the tank).
- Check the motor manufacturer name on the motor label.
- Record the motor manufacturer number from the same motor label.
Even when the tank says Craftsman, the pump, motor, and controls may trace back to different suppliers. Having the correct label information helps you get the right repair parts and avoid mismatched components.
| What you’re looking for | Where to find it on the compressor | What it helps with |
|---|---|---|
| Model number (919176330) | Front of the air tank saddle | Matching the correct parts list and manual |
| Code number | Oil label on the tank | Identifying the production run |
| Motor manufacturer name/number | Motor label | Motor-related service and replacement matching |
Because Craftsman is a brand, different OEMs have produced compressors over the years. What matters most is what your unit’s labels show.
- Older units may reference legacy compressor manufacturers.
- Some units use an ASME data plate on the tank for manufacturer identification.
- The motor label can point to a different maker than the pump or tank.
When ordering, we use the model number plus the part number and description from the parts breakdown. If you do not see what you need listed for 919176330, search by model number on Sears PartsDirect.
Last updated: February 2026
What is the most common cause of air compressor failure?
The most common cause of failure on a Craftsman air compressor like model 919176330 is poor maintenance that leads to overheating and accelerated wear. Dirty or restricted air intake, incorrect oil level (including overfilling), and running the compressor too hard are frequent triggers that shorten pump and motor life; see the maintenance schedule in the 919176330 owner's manual.
- Restricted air intake filter: a dirty filter reduces capacity and makes the pump work hotter.
- Incorrect oil level or oil neglect (oil-lubricated units): low oil increases wear; overfilling can cause premature failure.
- Overheating from poor ventilation: locating the unit in a hot, dirty, or poorly ventilated area raises operating temperature.
- Air leaks that keep the unit running: leaks at fittings, hoses, or valves can cause prolonged run time and heat.
- Pressure switch or check valve issues: can cause hard starting, constant leaking at the unloader, or repeated cycling.
- Unplug the compressor and bleed tank pressure to zero before any inspection or maintenance.
- Inspect the air intake filter; replace it if dirty, oily, or paint-covered.
- Verify oil level (if your unit is oil-lubricated): keep it near the fill hole level; change oil about every 100 hours.
- Listen at shutoff: a brief hiss is normal; continuous leaking points to a check valve or unloader problem.
- Check for leaks using soapy water on fittings under pressure; tighten snugly (do not overtighten).
| What you notice | Most likely cause | What to do first |
|---|---|---|
| Runs hot, low output | Restricted intake, poor ventilation | Clean/replace filter; improve airflow |
| Won’t start, trips reset | Overload from heat or pressure | Let cool; reset; verify cut-in behavior |
| Won’t build tank pressure | Leak or intake restriction | Leak test; check filter |
| Constant leak at pressure switch area when off | Check valve/unloader issue | Inspect/clean or replace check valve |
Heat and friction are what kill compressors. A clogged intake filter, wrong oil level, or an air leak forces longer run time, which raises temperature and wears the pump, bearings, and valves faster.
We list model-specific replacement parts by diagram when available; if you need to search more broadly by model number or category, use Sears PartsDirect. For step-by-step troubleshooting, our DIY guides like air compressor won't start and air compressor won't build tank pressure help you pinpoint the failing system.
Last updated: February 2026
Is it worth it to repair a compressor?
Yes, repairing a Craftsman air compressor model 919176330 is worth it when the problem is limited to serviceable components (pressure switch, check valve, gauges, fittings, motor overload reset) and the tank is sound; it is usually not worth it when the air tank is damaged or has been modified. Use the 919176330 owner's manual to compare troubleshooting steps and parts needs before you spend money.
- Repair when the compressor won’t start, won’t build pressure, leaks at fittings, or won’t regulate output pressure.
- Repair when the fix is a single part or adjustment (pressure switch, check valve, regulator, gauge, belt tension).
- Replace when the air tank is compromised (leaks at the tank itself, visible damage, or any tank alteration).
- Replace when the pump or motor needs major work and the total cost approaches a new unit.
- Repair when you can follow safe service steps: unplug power and fully release tank pressure first.
The manual emphasizes safety and design limits that directly impact whether repair makes sense:
- The unit can cycle automatically when power is ON, so unplugging before service is required.
- Do not adjust, remove, or defeat the safety valve or pressure switch.
- Never drill into, weld, or change the tank in any way; tank changes weaken it.
| Symptom | Most likely repair path | Usually worth it? |
|---|---|---|
| Motor will not run | Reset motor overload; check pressure switch cut-in/cut-out behavior | Yes |
| Won’t build tank pressure | Check valve, pump seals, intake filter, leaks | Often |
| Tank won’t hold air | Leak at fittings or drain valve vs. leak in tank | Fittings: yes; tank: no |
| Safety valve pops | Pressure switch issue or overpressure condition | Often |
A “cheap” repair can become unsafe if it involves bypassing safety controls or altering the tank. A smart repair restores normal cut-in/cut-out operation, holds pressure without leaks, and keeps the safety valve and pressure switch working as designed.
- Air compressor won't start
- Air compressor won't build tank pressure
- Air compressor air leaks
- How to replace an air compressor pressure switch
- How to replace an air compressor check valve
For parts lookup by model number and diagrams, start with the parts list for model 919176330, or search by model on Sears PartsDirect.
Last updated: February 2026
Are air compressor parts interchangeable?
Most air compressor parts are not interchangeable, and we recommend matching parts to your exact Craftsman model 919176330. Internal components (pump parts, valves, piston parts, gaskets) are built around specific designs and pressure ratings; using the wrong part can cause leaks, poor performance, or unsafe operation. Use the 919176330 owner's manual to confirm the correct part descriptions and maintenance procedures.
These parts typically must match the exact compressor design, mounting pattern, and pressure range:
- Pump components (cylinder, piston, connecting rod)
- Reed valves or valve plate parts (intake and exhaust)
- Head gasket and cylinder gaskets
- Check valve style and port orientation
- Pressure switch cut-in and cut-out range
- Motor mounting, pulley size, and belt length (belt-drive units)
Some external items can interchange, but only when you match thread type, size, and pressure rating:
- Quick-connect couplers and plugs (industrial, automotive, ARO styles)
- Air hose fittings and adapters
- Tank drain valve (if thread and reach match)
- Pressure gauges (if thread and range match)
Use this checklist before swapping any part from another compressor:
- Match the model number and parts list naming in the manual
- Confirm thread standard (commonly NPT) and exact size
- Confirm pressure rating meets or exceeds your compressor’s maximum
- Verify port location and orientation (especially check valves and regulators)
- Compare electrical ratings for switches and motors (voltage and amperage)
| Part type | Why it’s risky to swap | Typical symptom |
|---|---|---|
| Pressure switch | Wrong cut-in/cut-out settings | Won’t shut off, won’t restart |
| Check valve | Different port angles or sealing style | Constant leaking at unloader line |
| Coupler/plug style | Mismatched profile | Won’t connect or leaks |
| Gauge | Wrong range or thread | Inaccurate readings or leaks |
Your Craftsman 919176330 compresses air through a specific pump and valve design, then routes air through a check valve into the tank. When parts do not match the design or rating, you can lose tank pressure, create air leaks, or cause the compressor to cycle incorrectly.
For troubleshooting that often points to a mismatched or failing component, use air compressor air leaks or air compressor won't build tank pressure. If you need to locate the correct replacement part by model, search by model number on Sears PartsDirect.
Last updated: February 2026
