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Air Conditioning Parts and Supplies

  • Toll Free: 800-806-5312
  • West Coast: 855-984-8511
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  • AP AIR, INC.
  • 805 13th Street North
  • Humboldt, IA 50548
  • 800-806-5312
  • 1101 Center Street
  • Redding, CA 96001
  • 855-984-8511

CATERPILLAR 311B EXCAVATOR

Model Specifications

Compressor Type R134 Refrigeration (lbs) Compressor Oil (oz) Compressor Oil Viscosity
Sanden2.2 - 2.4

Belts

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A/C Compressor Belt - 1 Groove, 44.2
9-1138

Compressor Belt

068-5590

Blower Motors

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124-4040 - Blower Speed Resistor
220-572

Blower Motor Resistor

124-4040

Fits 2LS, 8GR

147-4834 Blower Motor Assembly - Caterpillar
BM3852

Blower Motor Assembly - 24V

147-4834
5I-3566 - Blower Motor Assembly - Caterpillar
BM3862

Blower Motor Assembly

5I-3566
5 3/4 Diameter Wheel, CW, 5/16 Shaft
BW176

Blower Wheel

115-3811

Fits 2LS, 8GR

Compressors

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OE Denso Compressor 10PA15C - 134mm, 1 Groove Clutch, 24V
503-1224

OE Denso Compressor 10PA15C - 134mm, 1 Groove Clutch, 24V

154-0490

Can Use Alternative Denso - 503-12243

Alternative Denso Compressor 10PA15C - 134mm, Single Groove Clutch, 24V
503-12243

Alternative Denso Compressor 10PA15C - 134mm, Single Groove Clutch, 24V

154-0490
OE Sanden Compressor SD7H15 - 138mm, 1 Groove Clutch 24V
509-586

OE Sanden Compressor SD7H15 - 138mm, Single Groove Clutch, 24V

3E-1906

Can Use Alternative Sanden - 509-5863

Alternative Compressor SD7H15 - 138mm, 1 Groove Clutch 24V
509-5863

Alternative Compressor SD7H15 - 138mm, Single Groove Clutch, 24 Volt

3E-1906

Condensers

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130-0253 - Caterpillar Excavator Condenser, 4 Pass
400-9013

Condenser

130-0253

Fits 2LS00204 and Above, 8GR00462 and Above
Parallel Flow, Non-Serviceable Design

105-9407 - Condenser - Caterpillar
400-9227

Condenser

105-9407

Fits 2LS, 8JR

Evaporators

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147-4812 - Caterpillar Evaporator
590-2529

Evaporator

147-4812
105-9507 - Evaporator - Caterpillar
590-2550

Evaporator

105-9507

Fits 2LS, 8JR

Expansion Valves

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Internally Equalized With 11 Capillary Tube
902-282

Expansion Valve

105-9509
Expansion Valve
903-750

Expansion Valve

130-0263

Heaters, Heater Cores

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461-2802 - Heater Core - Caterpillar
HC2718

Heater Core

5I-3556

Fits 2LS, 8GR

199-7298 - Heater Core - Caterpillar
HC2720

Heater Core

147-4813, 199-7298

Fits 2LS, 8GR

Heater Valve
TBA 5I-3568

Heater Valve

5I-3568

Radiators

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1189948 - Caterpillar Radiator
IR02011

Radiator

185-8981, 118-9948

Rec Driers/Accumulators

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2.95 X 9 Pad Mount - Dry-Tech Series
803-450

Heavy Duty Dry-Tech Receiver Drier

124-4055, 113-3497
2.95 X 9 Pad Mount
803-4501

Standard Duty Receiver Drier

124-4055, 113-3497

Switches/Electrical

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130-0270 - Binary High Pressure Switch - Caterpillar
220-424

High Pressure Switch

130-0270
099-6746 - Thermostatic Switch - Caterpillar
220-986

Thermostatic Switch

099-6746

Fits 2LS, 8GR

147-4815 - Temperature Sensor - Caterpillar
28-1051

Thermostatic Switch

147-4815

Fits 2LS, 8GR

309-5769 - Hydraulic Pressure Switch - Caterpillar
28-1052

Hydraulic Pressure Switch

309-5769, 106-0181, 167-3466
124-4042 - Relay Switch, Blower & Compressor
550-265

Relay Switch, Blower & Compressor

124-4042
Switch
TBA 106-0181

Pressure Switch

106-0181

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