CP503 (Type 1) Delta Compressor - Overview

Sections of the CP503

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Keep searches simple, eg. "belt" or "pump".
Nipple .25NPT X 2.5 – Part Number: D24888
Nipple .25NPT X 2.5
PartSelect #: PS10044304
Manufacturer #: D24888
  No Longer Available
WHEEL 9 BLACK SEMI-P – Part Number: D23138
WHEEL 9 BLACK SEMI-P
PartSelect #: PS12513396
Manufacturer #: D23138
  No Longer Available
TUBE ISOLATOR – Part Number: AC-0206
TUBE ISOLATOR
PartSelect #: PS18991058
Manufacturer #: AC-0206
  No Longer Available
Nut .375-16 UNC-2B H – Part Number: SSF-8080-ZN
Nut .375-16 UNC-2B H
PartSelect #: PS10050689
Manufacturer #: SSF-8080-ZN
  No Longer Available
SCREW – Part Number: A19123
SCREW
PartSelect #: PS12512659
Manufacturer #: A19123
$7.44
  Special Order
KIT FASTENER – Part Number: KK-4929
KIT FASTENER
PartSelect #: PS18993076
Manufacturer #: KK-4929
  No Longer Available
REGULATOR 4PORT P1P2 – Part Number: D27256
REGULATOR 4PORT P1P2
PartSelect #: PS18991718
Manufacturer #: D27256
  No Longer Available
Gauge Right Hand – Part Number: AC-0009-1
Gauge Right Hand
PartSelect #: PS10042281
Manufacturer #: AC-0009-1
  No Longer Available
Gauge Left Hand – Part Number: Z-AC-0010-1
Gauge Left Hand
PartSelect #: PS10054519
Manufacturer #: Z-AC-0010-1
  No Longer Available
Foot Molded Bumper – Part Number: AC-0364
Foot Molded Bumper
PartSelect #: PS10042363
Manufacturer #: AC-0364
  No Longer Available
Check Valve – Part Number: A19716
Check Valve
PartSelect #: PS10254691
Manufacturer #: A19716
  No Longer Available
Brush Set (2 Brushes) – Part Number: Z-D23825
Brush Set (2 Brushes)
PartSelect #: PS10054593
Manufacturer #: Z-D23825
Genuine Porter Cable replacement part Includes 2 Carbon Brushes with wire lead attached and installation instructions. • Worn brushes are frequently the cause of a poorly running motor. • Repla...
  No Longer Available

Common Symptoms of the CP503

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Air leak
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No compressed air
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Worn piston rod and sleeve
Disassemble plastic housing around compressor unit using appropriate tools. Remove the four bolts from the compressor head using a 5/16 nut driver. Carefully remove head assembly including airline. Remove bolt through rod bearing with Allen wrench.

Reassemble with new rod and piston assembly. Best to use blue locktite on bolt through rod bearing when reassembling. Make sure to torque all bolts to specs listed.
Parts Used:
Connecting Rod Assembly
  • Donald from BRYAN, TX
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Nutdriver, Screw drivers
7 of 12 people found this instruction helpful.
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The compressor was getting air
Put the seal in and it ran like a champ. No vacuum leak and it now runs again!
Parts Used:
TUBE SEAL
  • Linda from CARO, MI
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers, Socket set, Wrench set
4 of 8 people found this instruction helpful.
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Broken ground on original plug
Removed cover & old cord.
Replaced with new cord & replaced cover.
Works perfect.
Parts Used:
AC CORD
  • Debra from PRESCOTT VLY, AZ
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers
2 of 2 people found this instruction helpful.
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