Craftsman 113178770 16-gallon wet/dry vacuum Parts

On a Craftsman shop vac like model 113178770 (a 16-gallon wet/dry vacuum), the model number is printed on the rating label attached to the power head (the top motor housing). Check the outside of the motor cover first, then look under the carry handle or cord wrap areas.

Where to look on the vacuum

Check these common label locations on Craftsman wet/dry vacuums:

• Power head (motor housing): back side near the on/off switch or latches
• Under the carry handle on the top cover
• Near or under the cord wrap (if your unit has one)
• Rear of the power head close to the exhaust port
• Inside the top cover lip (visible when you remove the power head from the tank)

What the label looks like (and what to write down)

Most labels are silver, gray, or white and include several identifiers. Record these exactly:

• Model number (for example, 113178770)
• Serial number (often labeled “S/N”)
• Electrical rating (amps and volts), helpful for motor and switch matching
• Tank size (gallons) and other specs

Quick ID guide

You see on the label	What it means	Why we need it
Model / MOD	Model number	Matches the correct parts list
S/N	Serial number	Helps confirm production version
Volts / Amps	Electrical rating	Helps match switches, cords, motors

Why it matters

Craftsman shop vacs can look similar across multiple series, but parts like the switch, motor, hose size, and filters can vary by model. Using the exact model number prevents ordering the wrong vacuum cleaner parts.

If the label is missing or unreadable

Use these practical options to identify your unit:

• Look for a stamped number on the power head plastic (sometimes near the label area)
• Check any original paperwork or box (often lists the model)
• Compare your vacuum’s hose diameter and latch style to narrow the series
• Use our guide: how to find your appliance model number (and what it means for parts)

Last updated: February 2026

Shop vacuums like the Craftsman 113178770 16-gallon wet/dry vacuum usually lose suction because airflow is restricted somewhere in the system (filter, hose, inlet, or tank seal) or because the motor is not moving enough air. Restoring airflow almost always brings suction back.

Most common causes (and what to check first)

• Clogged filter: A dirty cartridge or foam sleeve filter is the #1 cause; clean it (if washable) or replace it.
• Hose or wand blockage: Check for a plug of debris near the nozzle, bends, or where the hose connects to the tank.
• Full tank: When the tank is packed with debris, airflow drops fast.
• Lid or tank seal leak: A pinched, cracked, or missing gasket lets air leak in and reduces pickup.
• Wrong setup for wet pickup: Using a dry filter for wet pickup (or a saturated filter) can choke airflow.
• Obstructed inlet/deflector: Debris can lodge at the intake port inside the tank.

Quick suction test (2 minutes)

1. Unplug the vacuum.
2. Remove the hose and look through it end-to-end.
3. Remove the filter and check if suction improves briefly (do not run long without the correct filter installed).
4. Reseat the lid and confirm the latches clamp evenly.

Symptom	Most likely cause	Best next step
Suction slowly got worse	Filter loading up	Clean or replace filter
Suction suddenly dropped	Hose clog or inlet blockage	Clear obstruction
Dust blows out exhaust	Filter torn or not seated	Reseat or replace filter
Whistling sound at lid	Gasket leak	Inspect lid/tank seal

Why it matters

Low suction is almost always an airflow problem. Running with restricted airflow makes cleanup frustrating and can shorten motor life because the vacuum runs hotter and works harder.

Helpful DIY resource

For safe electrical checks if the vacuum runs but seems weak (or cuts out), use how to use a multimeter to test electrical parts video.

Last updated: February 2026

A burnt-out motor on a Craftsman 113178770 16-gallon wet/dry vacuum typically shows up as a sharp burning electrical smell, the motor only hums or clicks without spinning, or it runs briefly then shuts off and loses suction. Confirm with a quick power-cord and switch check before replacing parts.

Common signs the motor is burnt out

• Strong burning odor from the motor housing (often like hot plastic)
• Loud grinding, squealing, or rattling that was not there before
• Motor hums but the fan does not spin (no airflow)
• Unit clicks or trips a breaker/GFCI when you try to start it
• Runs for seconds to a minute, then stops (overheats quickly)

Quick checks to rule out easier problems first

1. Unplug the vacuum and remove the hose and any attachments.
2. Check for a clog in the hose, inlet, or tank port; a blockage can overheat the motor.
3. Inspect the filter; a heavily loaded filter can restrict airflow and mimic motor failure.
4. Try a different known-good outlet (avoid long, undersized extension cords).
5. If you have a meter, test the cord and switch for continuity using how to use a multimeter to test electrical parts video.

What the symptoms usually mean

Symptom	Most likely cause	What to do next
Burning smell + no start	Motor windings overheated	Stop using; inspect for melted wiring, plan motor service/replacement
Hums but no airflow	Fan jam, seized bearings, or failed start components	Check for debris at the impeller area; if seized, motor is typically the fix
Starts then shuts off	Thermal overload tripping from heat	Clean/replace filter, clear clogs; if it still overheats quickly, suspect motor
Loud grinding	Bearing failure or debris hitting fan	Unplug immediately; inspect for obstructions; persistent noise points to motor/bearing failure

Why it matters

A failing wet/dry vacuum motor can overheat wiring, damage the switch, and reduce suction to near zero. Catching it early (clog, filter restriction, cord issue) can prevent repeat failures after repair.

Last updated: February 2026

For the Craftsman model 113178770 16-gallon wet/dry vacuum, the parts list is organized by assemblies (motor head, tank, hose, and filtration) so you can match the exact component to what is broken or missing. Use the model number to ensure every replacement fits correctly.

Main assemblies you will see for Craftsman 113178770

• Motor head (lid) assembly: motor, fan/impeller, housing, and internal seals
• Power components: power cord, switch, cord strain relief, wiring terminals
• Filtration and wet pickup safety: cartridge or foam filter (by setup), filter cage/retainer, float and float cage
• Collection: tank (drum), latches, gaskets, drain cap (if equipped)
• Airflow and handling: hose, hose cuffs/adapters, inlet fitting, casters/wheels, handle

Common accessories (often listed separately)

• Extension wands
• Floor nozzle/squeegee tool
• Crevice tool
• Utility nozzle

Quick “parts-to-symptom” guide

Symptom	Parts to check first	What usually fixes it
Weak suction	Filter, hose, lid gasket	Clean/replace filter, clear clog, replace cracked hose or seal
Won’t turn on	Cord, switch, motor	Replace damaged cord, replace switch, inspect motor connections
Water reaching motor head	Float/float cage, filter setup	Free stuck float, correct wet filter configuration
Dust blowing out	Filter, filter mount/seal	Reseat filter, replace torn filter, check gasket fit

Why it matters

Wet/dry vacuums depend on airtight seals and correct filtration. A small air leak at the lid gasket or a clogged filter reduces performance quickly and can overheat the motor.

Helpful resource for getting the exact parts list

• Use how to find your appliance model number (and what it means for parts) to confirm you are using 113178770 before selecting diagrams and ordering parts.

Last updated: February 2026