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8 Best DeWalt Air Compressor Belts (November 2026)

Updated on · By the Top Cool DIY team

The best DeWalt air compressor belts include the Homhelar AC-0815 Air Compressor Belt Fits for AC-0815 replacements, the D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223 for C-BT-223 poly V belts, and the bizhala N011005 A12210 Air Compressor Drive Belt for D55146, D55167 and D55168.

On this page (5 sections)
  1. The best DeWalt air compressor belts by fit
  2. How we compared these DeWalt compressor belts
  3. How to match a DeWalt air compressor belt
  4. Should you keep a spare compressor belt?
  5. Final pick for the best DeWalt air compressor belt

The best DeWalt air compressor belt for many D55146, D55167 and D55168 models is the bizhala N011005 A12210 belt. It measures 30 1/2 in long and 5/8 in wide, and it comes in a 3-pack.

That combination matters because the belt family is widely used across those DeWalt models. An exact part number match is still the safest way to shop, since a similar looking belt can have the wrong length or tooth profile.

For AC-0815 applications, the Homhelar 15 1/8 in belt is the better match. Its shorter length puts it in a different belt family from the A12210 and N011005 options.

A replacement belt only works when its part number and dimensions match the compressor. DeWalt uses several belt families, so don't choose by brand name alone.

The safest check starts with the number printed on the old belt. If that number is gone, measure the belt and compare length, width and rib or tooth details against the replacement listing.

This guide groups the picks by those numbers and sizes. That way you can move from a worn belt to a match without guessing from a general fit claim.

If you need a broader comparison, start with our guide to the Best Replacement Belt For Air Compressor. Owners of other Craftsman units can also compare the best craftsman air compressor belt options.

Both guides help when a compressor shares parts across brands or when the model label is hard to read. Keep your old belt until the replacement is fitted, because it remains your clearest reference.

Turn the compressor off and unplug it before you remove or measure the old belt. That simple step keeps the belt area safe to inspect and makes the measurements easier to trust.

Our picks at a glance

  1. 1 Homhelar AC-0815 Air Compressor Belt Fits
    Best for AC-0815 replacements

    Homhelar AC-0815 Air Compressor Belt Fits

    9.7/10 our score

    See it on Amazon
  2. 2 D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223
    Best for C-BT-223 poly V belts

    D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223

    9.6/10 our score

    See it on Amazon
  3. 3 bizhala N011005 A12210 Air Compressor Drive Belt
    Best for D55146, D55167 and D55168

    bizhala N011005 A12210 Air Compressor Drive Belt

    9.5/10 our score

    See it on Amazon
  1. 4msspett C-BT-223 Air Compressor Drive Belt CompatibleCheck it
  2. 5Powswopx D55146 D55167 D55168 Drive Belt A12210

    Powswopx D55146 D55167 D55168 Drive Belt A12210

    Best for a 3-belt DeWalt spare set
    Check it
  3. 6Fuoequl 470j6 Air Compressor Belt C-BT-224

    Fuoequl 470j6 Air Compressor Belt C-BT-224

    Best for long C-BT-224 belts
    Check it
  4. 7C-BT-222 Belt Compatible with Air Compressor LOETPRCheck it
  5. 8PuBaDuoParts N011005 A12210 Air Compressor Drive BeltCheck it

The best DeWalt air compressor belts by fit

The best choice depends on your original belt number, model family and dimensions. The highest-scoring options below offer the clearest match for common DeWalt replacement needs.

Use this list as a shortlist, not as a guarantee of fit. Each entry below is grouped by the part number it replaces, so you can start with your old belt and work across.

If your belt number is not visible, use the stated length and width as the next check. Rib count and tooth profile also matter, because pulleys are cut to match a specific belt shape.

1

Homhelar AC-0815 Air Compressor Belt Fits: Best for AC-0815 replacements

Homhelar AC-0815 Air Compressor Belt Fits, DeWalt air compressor belts
9.7/10Our score
  • AC-0815, CAC-1311 and CAC-1342 replacement numbers
  • 15 1/8 in length
  • 5/8 in width
  • 2-pack

This 2-pack matches several DeWalt, Porter Cable, Devilbiss, Bostitch, Sears Craftsman and Makita compressor applications. Its AC-0815, CAC-1311 and CAC-1342 numbers make model matching straightforward.

See it on Amazon

Pros

  • Clear replacement numbers
  • 15 1/8 in length and 5/8 in width
  • Fits several DeWalt series

Cons

  • Only suitable when your original belt matches the AC-0815 family
  • Exact compressor model still needs checking

Homhelar is the best fit here when your original belt belongs to the AC-0815, CAC-1311 or CAC-1342 family. It measures 15 1/8 in long and 5/8 in wide, which separates it from the longer A12210 and N011005 belts.

The 2-pack covers DeWalt, Porter Cable, Devilbiss, Bostitch, Sears Craftsman, Makita and other compatible brands. The stated DeWalt applications include D55141, C2002, C2005 and C2006 series.

That wider brand coverage suits owners who bought a compressor under one label and later find the same belt family listed under another. It does not remove the need to check your own model and type.

Its ribbed design is described as fitting the drive wheel to reduce slippage risk. That feature does not make it interchangeable with every ribbed belt, so compare the original part number and length first.

The rubber construction is described as high elasticity and wear resistant, with tensile strength and anti aging ability for frequent compressor use. In daily terms, that points to a belt meant for repeated start and stop cycles rather than occasional light duty.

Keep the belt and pulleys clean during fitting, and check that the pulleys sit in the same plane. Oil, water and dust can all reduce grip, even with a correctly sized belt.

Choose Homhelar when your old belt measures close to 15 1/8 in and carries one of its listed replacement numbers. It is the wrong starting point for a D55146, D55167 or D55168 compressor using a 30 1/2 in belt.

Homhelar AC-0815 Air Compressor Belt FitsCheck it on Amazon
2

D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223: Best for C-BT-223 poly V belts

D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223, DeWalt air compressor belts
9.6/10Our score
  • C-BT-223 belt number
  • J 39 in PL 6 rib
  • Rubber material
  • 1 belt

The D&D PowerDrive belt is a C-BT-223 option with a J 39 in PL 6-rib format. It fits the type of belt match needed for compatible Sears, Craftsman, Porter Cable and Devilbiss compressors.

See it on Amazon

Pros

  • C-BT-223 reference
  • 6-rib format
  • Rubber construction

Cons

  • Single-belt pack
  • The exact DeWalt model is not specified

D&D PowerDrive is a good choice when your compressor uses C-BT-223 and a 6-rib J 39 in PL belt. The product data identifies it as a rubber V belt with the ORB-H-1028 part number.

Its compatibility focuses on Sears, Craftsman, Porter Cable and Devilbiss compressors. Because a specific DeWalt model is not supplied, match the C-BT-223 number and rib pattern before buying.

The 6-rib format is a key detail here. It tells you how the belt engages the pulley, and a belt with the wrong rib count can sit badly even if the overall length looks close.

The single-belt pack suits a repair where you need one replacement rather than a storage set. Compare the old belt's length and pulley fit, especially if the compressor has been modified or repaired before.

Rubber construction also means you should keep the belt away from oil and water during storage and fitting. A clean, dry pulley surface helps the belt grip from the first run.

Check the belt path before you tension it, and make sure the shafts stay parallel. Misalignment can cause uneven wear that shortens the life of an otherwise correct belt.

Choose this belt for a confirmed C-BT-223 application. For a DeWalt model with an A12210 or N011005 belt, use one of the longer drive-belt options instead.

D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223Check it on Amazon
3

bizhala N011005 A12210 Air Compressor Drive Belt: Best for D55146, D55167 and D55168

bizhala N011005 A12210 Air Compressor Drive Belt, DeWalt air compressor belts
9.5/10Our score
  • A12210 and N011005 replacement numbers
  • 30 1/2 in length
  • 5/8 in width
  • 3-pack

This is a strong match for DeWalt D55146, D55167 and D55168 compressors when the original belt uses A12210 or N011005. The 3-pack gives you replacement belts for future maintenance.

See it on Amazon

Pros

  • Detailed DeWalt model coverage
  • 30 1/2 in length and 5/8 in width
  • 3-pack

Cons

  • Not the right family for shorter AC-0815 belts
  • Model type may still matter

bizhala is the strongest model-specific option for DeWalt D55146, D55167 and D55168 compressors when they use A12210 or N011005. It measures 30 1/2 in long, 5/8 in wide, 0.05 in thick without the tooth and 0.065 in with the tooth.

The 3-pack gives you one belt for the repair and two spares. The stated compatibility also includes several Craftsman and Bostitch models, which can help when a shared compressor platform uses the same drive belt.

That cross brand coverage is useful in a workshop where compressors from different labels sit side by side. The shared belt number matters more than the badge on the tank.

Check the compressor type as well as the model number. The data includes several D55146, D55167 and D55168 types, so a model-family match alone should not replace a dimension check.

The tooth dimensions help you compare the old belt in hand. If your removed belt is smooth rather than toothed, pause and recheck the profile before ordering.

Inspect belts periodically and replace them when worn to maintain peak performance. That routine check is simple, and it can catch cracking or glazing before the compressor stops mid job.

Choose bizhala when your original belt uses A12210 or N011005 and matches these measurements. It is the clearest all-around pick for common DeWalt 15-gallon and hand-carry applications in this group.

bizhala N011005 A12210 Air Compressor Drive BeltCheck it on Amazon
4

msspett C-BT-223 Air Compressor Drive Belt Compatible: Best for a single C-BT-223 belt

msspett C-BT-223 Air Compressor Drive Belt Compatible, DeWalt air compressor belts
9.3/10Our score
  • C-BT-223 part number
  • Poly V belt
  • 1-pack
  • Air compressor compatibility

The msspett belt keeps the choice simple when your compressor calls for C-BT-223 and you need one replacement. It is a single poly V belt, so confirm the size and rib pattern before ordering.

See it on Amazon

Pros

  • Clear C-BT-223 number
  • Single replacement belt
  • Poly V design

Cons

  • Dimensions are not stated in the product data
  • Limited model information

msspett is for buyers who need a single C-BT-223 poly V belt. It identifies the part number and belt style clearly, but it does not state the belt dimensions in the available product data.

That makes the original belt your main reference. Check its length, rib pattern and pulley fit before choosing this option for a DeWalt or related compressor.

The poly V design means the belt spreads load across several ribs rather than relying on one edge. That shape needs matching pulleys, so a quick visual check of the old belt is worth doing.

The 1-pack can make sense for a one-time repair when you already have a confirmed match. If your compressor needs a spare or a scheduled maintenance set, compare it with the 3-pack options.

Keep the packaging and any markings from the old belt until the new one is fitted. If the fit is wrong, the old belt gives you the measurements to return to the listing with.

Store the belt flat and clean if you buy ahead, and keep it away from heat and oil. That care helps preserve the belt surface before it ever reaches the pulley.

Choose msspett only after confirming C-BT-223. The part number is more useful here than a general claim that the belt fits an air compressor.

msspett C-BT-223 Air Compressor Drive Belt CompatibleCheck it on Amazon
5

Powswopx D55146 D55167 D55168 Drive Belt A12210: Best for a 3-belt DeWalt spare set

Powswopx D55146 D55167 D55168 Drive Belt A12210, DeWalt air compressor belts
9.1/10Our score
  • A12210 and N011005 replacement numbers
  • Fits D55146, D55167 and D55168
  • 30 1/2 in length
  • 3-pack

Powswopx covers the same main DeWalt model family as other A12210 and N011005 belts. Its stated 30 1/2 in length, 5/8 in width and 3-pack are useful for planned maintenance.

See it on Amazon

Pros

  • D55146, D55167 and D55168 coverage
  • Full belt dimensions
  • 3-pack

Cons

  • Not for every DeWalt compressor
  • Check tooth and smooth thickness details

Powswopx is another strong match for D55146, D55167 and D55168 compressors using A12210 or N011005. It states a 30 1/2 in overall length, 5/8 in width, 0.05 in thickness without the tooth and 0.065 in with the tooth.

The 3-pack is useful for a workshop that wants a spare available. Its stated compatibility also includes Craftsman 919-series compressors and Bostitch CAP1615-OF and CAP1645-OF models.

That model list makes it easier to cross check if your compressor was sold under a different brand label. Focus on the 919 series numbers and the CAP models as well as the DeWalt numbers.

Compare the tooth profile with the belt you remove. The dimensions may match while the pulley engagement does not, especially if your compressor uses a smooth belt rather than a toothed belt.

The half length is also stated at 15-1/4 in, which can help when you measure a worn belt that has lost its original shape. Use it as a second reference alongside the overall length.

Inspect belts periodically and replace when worn to maintain peak performance. A short visual check during other maintenance can save a compressor from failing when you need it.

Choose Powswopx when its model and dimensions match your current belt. It is a close alternative to the bizhala option for the same main DeWalt family.

Powswopx D55146 D55167 D55168 Drive Belt A12210Check it on Amazon
6

Fuoequl 470j6 Air Compressor Belt C-BT-224: Best for long C-BT-224 belts

Fuoequl 470j6 Air Compressor Belt C-BT-224, DeWalt air compressor belts
8.9/10Our score
  • C-BT-224 and 470j6 replacement numbers
  • 47 in length
  • 9/16 in width
  • 2-pack

This 2-pack is for a different belt family from the shorter DeWalt drive belts above. It covers several Porter Cable, Sears and Devilbiss models with a 47 in, 6-rib format.

See it on Amazon

Pros

  • Long 47 in belt
  • C-BT-224 reference
  • 2-pack

Cons

  • Not a general replacement for A12210 belts
  • The listed applications focus on Porter Cable, Sears and Devilbiss

Fuoequl belongs to the C-BT-224 and 470j6 belt family, not the shorter A12210 family. It measures 47 in long and 9/16 in wide, with a 6-rib poly V design.

The 2-pack covers selected Porter Cable, Sears and Devilbiss compressors. The stated Porter Cable models include CPL55GH8W and CPLC7060V, while the Sears examples include several 919-series models.

The long 47 in length is the clearest way to tell this belt apart from the 30 1/2 in options above. If your old belt is much shorter, this is not the family you need.

Its width is slightly narrower at 9/16 in, so pulley fit matters as much as length. A belt that is correct in length but wrong in width can still sit poorly.

This belt may help a DeWalt owner only when the compressor's original belt matches the C-BT-224 family. Use the number, rib count and dimensions together before ordering.

The 2-pack suits owners who want a spare for a compressor that runs often. Store the spare clean and dry so it is ready when the installed belt wears.

Choose Fuoequl for a confirmed long C-BT-224 replacement. Do not substitute it for a 30 1/2 in A12210 or N011005 belt.

Fuoequl 470j6 Air Compressor Belt C-BT-224Check it on Amazon
7

C-BT-222 Belt Compatible with Air Compressor LOETPR: Best for 380J6 belt matches

C-BT-222 Belt Compatible with Air Compressor LOETPR, DeWalt air compressor belts
8.6/10Our score
  • C-BT-222 model
  • 380J6 size
  • 965.2 mm length reference
  • Poly V belt

The LOETPR belt is a C-BT-222, 380J6 option for compressors that use this belt size. Keep the pulleys clean and aligned during installation, as recommended for this belt.

See it on Amazon

Pros

  • Clear C-BT-222 model
  • 380J6 size reference
  • Poly V construction

Cons

  • Single-belt pack
  • No specific DeWalt model numbers are stated

LOETPR is a C-BT-222 poly V belt in the 380J6 size, with a 965.2 mm length reference. It is a different match from the AC-0815, A12210, N011005, C-BT-223 and C-BT-224 options above.

The product data recommends keeping the belt and pulleys clean and free of oil and water. It also calls for checking that the shafts are parallel, the pulleys share the same plane and the machine stays level during operation.

Those installation checks matter because alignment problems can shorten belt life even when the replacement size is correct. Disconnect power before inspecting or working near the belt and pulleys.

The 380J6 reference gives you a second way to identify the belt if the C-BT-222 number has worn away. Compare that size code with the marking on your old belt before you order.

Extreme cold and heat can harm the belt material over time, so storage conditions matter too. Keep a spare belt in a cool, dry place rather than in a hot shed or next to chemicals.

The single belt pack suits a direct replacement where the match is already clear. If you want a backup, you would need to buy another belt separately.

Choose LOETPR when your old belt is marked C-BT-222 or 380J6. The lack of a specific DeWalt model reference means you should rely on your original belt number and measurements.

C-BT-222 Belt Compatible with Air Compressor LOETPRCheck it on Amazon
8

PuBaDuoParts N011005 A12210 Air Compressor Drive Belt: Best for keeping a backup belt

PuBaDuoParts N011005 A12210 Air Compressor Drive Belt, DeWalt air compressor belts
8.2/10Our score
  • A12210 and N011005 replacement numbers
  • 30.24 in stated length
  • 5/8 in width
  • 2-pack

This 2-pack targets the same broad D55146, D55167 and D55168 family as other N011005 and A12210 belts. Compare its stated length with your original belt because it differs from the 30 1/2 in measurements listed by other picks.

See it on Amazon

Pros

  • A12210 and N011005 references
  • 2-pack
  • 5/8 in width

Cons

  • Stated length differs from other same-number belts
  • Check the exact model and belt length carefully

PuBaDuoParts targets the A12210 and N011005 family and identifies D55146, D55167 and D55168 among its compatible DeWalt models. It states a 30.24 in overall length and 5/8 in width.

The 2-pack gives you a replacement and a spare. Its stated smooth thickness is 0.05 in and toothed thickness is 0.065 in, so compare those details with your old belt before ordering.

The stated length differs from the 30 1/2 in dimensions given for the bizhala and Powswopx belts. That difference is large enough to justify measuring your original belt and checking the exact compressor type.

This belt is aimed at owners who use their compressor for regular work, from nailers to spray guns and inflators. A spare in the pack helps if the first belt wears faster than expected.

Check the full model list for your compressor type, not just the D55146, D55167 or D55168 family name. Several types sit under each model number, and the belt can vary by type.

Clean oil and dust from the pulleys before fitting, and confirm the belt sits evenly in the grooves. That check helps the toothed profile engage properly from the start.

Choose PuBaDuoParts when the A12210 or N011005 number, model and dimensions all line up. If the length is uncertain, the two 30 1/2 in options provide a simpler comparison point.

PuBaDuoParts N011005 A12210 Air Compressor Drive BeltCheck it on Amazon

How we compared these DeWalt compressor belts

We compared the replacement numbers, stated dimensions, rib or tooth details, compatible models and pack sizes. A clear part-number match received more weight than a broad claim of air compressor compatibility.

That approach helps separate direct replacements from belts that only sound close. A belt can be the right brand and still be the wrong length, width or rib pattern for your pulleys.

Our score weighs specs, features and buyer feedback against what you're shopping for. The scores are a comparison aid, not a guarantee that any belt will fit without checking your compressor.

Pack size also played a part in how we grouped the picks. A 3-pack can be better value for a busy workshop, while a single belt suits a one-time repair with a confirmed match.

We also paid attention to how much model detail each listing gives. Listings that name exact models and types make it easier to rule a belt in or out before you order.

Where dimensions were missing, we treated that as a limit rather than filling in the gap. In those cases, the original belt on your compressor becomes the main source of truth.

Use the How To Use DeWalt Air Compressor? guide for operating and setup basics. It can help you identify the compressor model and understand the belt area before maintenance.

That guide is most useful before you start work, not after a belt has already failed. Knowing the model and type first makes the belt search much shorter.

A few minutes of checking at this stage can save a return and a second wait for parts. It also helps you spot pulley damage or misalignment while the belt guard is off.

How to match a DeWalt air compressor belt

Match the belt in this order:

  1. Find the compressor model and type on the label.
  2. Read the number printed on the old belt, if it is still visible.
  3. Compare length, width, rib count and tooth profile.
  4. Check the replacement's stated compatible models.
  5. Turn off and unplug the compressor before removing or measuring the old belt.

That order keeps the most specific clues first. A printed belt number usually settles the match faster than the compressor brand alone.

A model number alone may not be enough. D55146, D55167 and D55168 appear across several types, so use the belt number and dimensions as a second check.

If the belt number is worn away, measure the old belt while it is off the pulleys. Note the overall length and width, and look closely at whether the belt is smooth, toothed or ribbed.

Compare rib count on poly V belts, since that shape must match the pulley grooves. A close length with the wrong rib count is still a mismatch.

Keep the belt and pulleys clean. Oil and water can affect belt grip, while pulley misalignment can create uneven wear or slipping.

Check that the shafts are parallel and the pulleys share the same plane before tensioning the belt. That alignment check protects both the new belt and the pulley surfaces.

Turn the compressor on briefly only after the guard is back in place, and listen for rubbing or flutter. If the belt does not run true, switch off and recheck the fit before longer use.

Should you keep a spare compressor belt?

A spare makes the most sense when your compressor supports regular work and uses a belt with a confirmed part number. The Homhelar, bizhala, Powswopx, Fuoequl and PuBaDuoParts options include multiple belts.

For a garage compressor used now and then, a spare is still handy if the belt fails before a job. It turns a wait for parts into a short repair you can do at home.

A spare does not fix a mismatch. Store it clean and dry, and compare it with the installed belt before you need it.

Keep the spare away from oil, water and direct heat, since those conditions can affect rubber and poly V materials. A clean shelf or a sealed bag in a dry cupboard is a better home than a damp floor.

Label the spare with its part number when you store it. That note saves time later, especially if you own more than one compressor or share parts across models.

A spare does not fix a mismatch. Store it clean and dry, and compare it with the installed belt before you need it.

For a broader look at belt-driven compressor designs, see our guide to the Best Belt Drive Air Compressor. It explains why belt-drive layouts may affect maintenance access and replacement planning.

That background can help you decide how easy access will be when the belt needs changing. Poor access is a common reason owners delay maintenance until a belt fails.

Final pick for the best DeWalt air compressor belt

The bizhala N011005 A12210 belt is the best overall pick for many D55146, D55167 and D55168 compressors because it combines clear model coverage, full dimensions and a 3-pack. Choose Homhelar for AC-0815, CAC-1311 or CAC-1342 applications.

Pick D&D PowerDrive or msspett for a confirmed C-BT-223 belt. Choose Fuoequl for C-BT-224, and choose LOETPR for C-BT-222 or 380J6.

Those families do not cross over. A 47 in C-BT-224 belt will not replace a 30 1/2 in A12210 belt, and a 15 1/8 in AC-0815 belt will not replace either one.

Use your old belt as the final reference before you order. Match the part number first, then confirm length, width and rib or tooth profile against the listing.

When your measurements do not match, stop and verify the model, part number and pulley profile before ordering. That pause is cheaper than forcing a belt that was never meant for your compressor.

Once the match is clear, fit the belt with clean pulleys and aligned shafts. Then keep the spare, if you bought a multi-pack, stored clean and dry for the next change.

Our top 3 picks at a glance

  1. 1 Homhelar AC-0815 Air Compressor Belt Fits
    Best for AC-0815 replacements

    Homhelar AC-0815 Air Compressor Belt Fits

    9.7/10 our score

    See it on Amazon
  2. 2 D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223
    Best for C-BT-223 poly V belts

    D&D PowerDrive ORB-H-1028 Air Compressor Belt C-BT-223

    9.6/10 our score

    See it on Amazon
  3. 3 bizhala N011005 A12210 Air Compressor Drive Belt
    Best for D55146, D55167 and D55168

    bizhala N011005 A12210 Air Compressor Drive Belt

    9.5/10 our score

    See it on Amazon

Frequently asked questions

What is the best DeWalt air compressor belt?

The best DeWalt air compressor belt depends on the original part number and size. For D55146, D55167 and D55168 models using A12210 or N011005, the bizhala and Powswopx 30 1/2 in belts are direct candidates.

For AC-0815 applications, compare the Homhelar belt instead.

What belt fits a DeWalt D55146 compressor?

Several products here identify DeWalt D55146 compatibility, including the bizhala, Powswopx and PuBaDuoParts N011005 or A12210 belts. Check your compressor type, original belt number, length, width and tooth profile before ordering because D55146 has multiple versions.

How do I match a replacement DeWalt compressor belt?

Match the original part number first, then confirm length, width, rib count and tooth profile. Common numbers in this guide include AC-0815, CAC-1311, CAC-1342, A12210, N011005, C-BT-223 and C-BT-224.

Measure the old belt if the model match is unclear.

What causes a DeWalt compressor belt to slip?

A belt can slip when its size or rib pattern is wrong, when the pulleys are not aligned, or when oil and water contaminate the belt. Turn off and unplug the compressor before inspection.

Replace a worn belt and check pulley alignment before returning the compressor to service.