Owner’s manual
Where to find model number on Craftsman Wet Dry Vac?
On the Craftsman wet/dry vacuum model 338179370, the model number is printed on the product identification label (rating label) attached to the vacuum body. We typically see this label on the upper portion of the canister or near the motor head where it is easy to read when ordering parts.
Where to check on model 338179370
Look for a sticker or metal tag that includes MODEL and sometimes SERIAL.
- On the motor head housing (top section)
- On the upper outside wall of the tank/canister
- Near the handle or cord wrap area
- Close to the power switch area
- Occasionally on the rear of the unit near the caster base
What the label looks like (and what to write down)
The label usually includes several identifiers. For parts lookup, the model number is the most important.
| Label item | Example | Why it matters |
|---|---|---|
| Model number | 338179370 | Matches the correct parts list and diagrams |
| Serial number | Varies | Helps with manufacturing run identification |
| Electrical rating | Volts/amps | Useful for motor and switch troubleshooting |
Tips if the label is missing or hard to read
If the label is worn, you can often still confirm the correct model by matching key features and then verifying in documentation.
- Unplug the vacuum before handling the motor head
- Clean the label gently with a damp cloth (avoid solvents)
- Use a flashlight and take a close-up photo to zoom in
- Check for a second label under the motor head lip or near the base
- Compare the tank size and hose diameter to what your manual shows
Why it matters
Using the exact model number (like 338179370) prevents ordering the wrong filter, hose, switch, or motor components, since Craftsman wet/dry vacuums can look similar across different model series.
For diagrams and identification details, use the 338179370 manual.
Last updated: January 2026
What is the list of vacuum cleaner parts?
For the Craftsman 338179370 8-gallon wet/dry vacuum, the parts list is typically organized around the airflow path (intake to exhaust), the collection system (tank and lid), and the electrical powerhead (motor and switch). For model-specific diagrams and item callouts, use the Craftsman 338179370 wet/dry vacuum manual.
Common parts you will see on wet/dry vacuums
Wet/dry vacuums like the Craftsman 338179370 usually include these serviceable components:
- Motor and fan (impeller)
- Power switch and power cord
- Lid or motor head (often houses the motor and switch)
- Tank (collection canister)
- Float or shutoff mechanism (helps prevent liquid overfill)
- Filters (cartridge, foam sleeve, or dry pickup filter depending on setup)
- Hose, adapters, and extension wands
- Nozzle tools (utility nozzle, crevice tool)
- Casters or wheels (mobility hardware)
How the parts group together (quick map)
Understanding the groups helps you identify what to inspect or replace.
| Parts group | What it does | Common symptoms when worn/damaged |
|---|---|---|
| Airflow and filtration | Moves air and traps debris | Low suction, dust blowing out, clogging |
| Collection system | Holds debris and liquids | Leaks, poor pickup, lid not sealing |
| Electrical and controls | Powers and starts the motor | Won’t start, intermittent power |
| Attachments and mobility | Directs pickup and rolls unit | Poor pickup at nozzle, hard to move |
Why it matters
When you match the part to the symptom (for example, filter and hose for low suction, switch and cord for no power), you avoid replacing the wrong components and get your Craftsman 338179370 back to full pickup faster.
Tips for identifying the right part
- Confirm the model number is 338179370 on the rating label.
- Use the exploded views and item numbers in the Craftsman 338179370 wet/dry vacuum manual.
- Check whether you are set up for dry pickup or wet pickup; filter type and float position can differ.
- Inspect for simple issues first: clogs in the hose/wand, a dirty filter, or a lid seal not seated.
Last updated: January 2026
Why is my Craftsman vacuum not suctioning?
If your Craftsman 338179370 8-gallon wet/dry vacuum has little or no suction, the most common causes are a clogged filter, a blockage in the hose or nozzle, or an air leak at the lid, hose, or tank seal. Restoring airflow usually fixes suction immediately.
Quick checks (fastest fixes first)
- Unplug the vacuum and empty the tank; an overfilled tank reduces airflow.
- Remove the hose and wand; check for a clog (packed debris is common near bends).
- Inspect the nozzle and any attachments for obstructions.
- Check the filter; if it is dusty or caked, clean it (if washable) or replace it.
- Reseat the lid and latches; a lid that is not fully sealed causes a major suction loss.
- Verify the hose is fully seated at both ends and not split or crushed.
Filter and airflow basics for model 338179370
Wet/dry vacuums rely on a clear air path: nozzle, hose, inlet, tank, filter, then motor. A dirty filter is the top reason suction drops because it restricts airflow and can make the motor sound higher-pitched.
Use the maintenance and filter guidance in the 338179370 user manual to confirm the correct filter type for wet pickup vs. dry pickup, and whether your filter is washable.
What to check if suction is still weak
| Symptom | Most likely cause | What we recommend |
|---|---|---|
| Motor runs, almost no pickup | Hose/nozzle blockage | Clear hose, wand, and inlet port |
| Motor runs, suction fades quickly | Filter clogged | Clean or replace filter |
| Whistling or air rushing sound | Air leak at lid/hose | Reseat lid, check seals and hose fit |
| Works without hose, weak with hose | Hose split or crushed | Replace hose or damaged fittings |
Why it matters
Low suction is usually an airflow restriction or air leak, not a motor failure. Fixing the filter, clogs, or seals helps the vacuum pick up better and reduces strain on the motor.
Last updated: January 2026
How do you remove the filter from a Craftsman wet dry vac?
On the Craftsman 338179370 8-gallon wet/dry vacuum, we remove the filter by unplugging the vac, taking off the powerhead (motor lid), then releasing the filter retainer (nut, latch, or band depending on the filter style) and pulling the filter straight off the cage. Confirm the exact retainer style in the Craftsman 338179370 owner’s manual.
Step-by-step: safe filter removal
- Unplug the wet/dry vacuum; never service it while it is plugged in.
- Remove the hose and any attachments from the inlet.
- Release the latches and lift off the powerhead (motor lid).
- Locate the filter on the filter cage (center of the powerhead underside).
- Remove the retainer (commonly a plastic nut/knob, a latch, or a band).
- Pull the filter straight off; avoid twisting hard so you do not crack the cage.
- Tap loose dust into a trash bag or take the filter outside for cleaning.
Filter types you may see (what changes)
Because filter kits can vary by production run and what was installed last, the exact retainer on a Craftsman 338179370 can differ. Use this quick guide:
| What you see | What to do | Common mistake |
|---|---|---|
| Round cartridge filter | Remove the center nut/knob, then slide filter off | Pulling without removing the nut first |
| Foam sleeve (wet pickup) | Slide foam sleeve off the cage | Using it for dry dust pickup |
| Bag-style filter | Unclip/unhook, then lift off | Tearing the bag on the cage edges |
Why it matters
Removing the filter correctly prevents broken filter cages, improves suction, and helps protect the motor from fine dust. It also helps you avoid using the wrong filter for wet pickup versus dry pickup.
Quick checks before you reinstall
- Make sure the filter is fully seated on the cage (no gaps).
- Reinstall the retainer snugly; do not overtighten plastic hardware.
- If suction is still weak, check the hose for clogs and confirm the drum lid seal is seated.
Last updated: January 2026
