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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 312C EXCAVATOR

Model Specifications

Compressor Type R134 Refrigeration (lbs) Compressor Oil (oz) Compressor Oil Viscosity
Denso1.8

Belts

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A/C Compressor Belt - 1 Groove, 46
9-1754

A/C Belt

255-3014

Fits BWH, DBN, Fits FDS301 and Above

Length - 46"

A/C Compressor Belt - 1 Groove, 45.8
9-1809

Compressor Belt

9M-1091

Fits BNN, BWH, DBN, FDS1 - FDS300

Blower Motors

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24 Volt Single Speed 2 Wire CW With 5/16 Shaft
BM12420

Blower Motor - 24V, Single Speed, 2 Wire

288-1556

Fits BNN

147-4834 Blower Motor Assembly - Caterpillar
BM3852

Blower Motor Assembly - 24V

147-4834

Fits BWH, DBN, FDS

5 31/32 Diameter Wheel, 5/16 Shaft
BW166

Blower Wheel

191-0979

Fits BNN

Cab Products/Filters

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185-8154 - Cab Air Filter - Caterpillar
320-8154

Cab Air Filter

185-8154

Fits BWH, DBN, FDS

Compressor Clutches

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New 10PA17C Clutch with 24V Coil, 5.3 with Single Groove
600-3012

10PA17C Clutch with 24V Coil, 5.3" with Single Groove

231-6985

Compressor Components

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New 24 Volt Coil, 10PA17C, 10PA15C, 10S17C
610-308

Compressor Coil

259-7286, 231-6985, 176-1920

Compressors

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OE Denso Compressor 10S17C - 135mm, Single Groove Clutch, 24V
503-161

OE Denso Compressor 10S17C - 135mm, Single Groove Clutch, 24V

231-6984, 176-1895

Fits BNN, BWH, DBN, FDS

Can Use Alternative Denso 503-1613

Condensers

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164-0588 - Caterpillar Excavator Condenser
400-9010

Condenser

164-0588

Fits BWH, DBN, FDS

Parallel Flow, Non-Serviceable Design

Condensers/Oil Coolers

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Condenser
TBA 189-2844

Condenser

189-2844

Fits BNN

Evaporators

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147-4812 - Caterpillar Evaporator
590-2529

Evaporator

147-4812

Fits BNN, BWH, DBN, FDS

Evaporator
TBA 177-6688

Evaporator

177-6688

Fits BNN

Evaporator
TBA 228-9043

Evaporator

228-9043

Fits BNN

Expansion Valves

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Expansion Valve
903-750

Expansion Valve

130-0263

Use With 590-2529 Evaporator

Fits BNN, BWH, DBN, FDS

Expansion Valve - Block Type - Caterpillar
903-801

Expansion Valve

177-6723

Fits BNN
Use With 177-6688 Evaporator

Expansion Valve - Caterpillar
903-804

Expansion Valve

228-9044

Fits BNN
Use With CAT 228-9043 Evaporator

Heaters, Heater Cores

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Heater Core
TBA 185-8155

Heater Core

185-8155

Fits BNN, BWH, DBN, FDS

Radiators

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1968031 - Caterpillar Radiator
IR02015

Radiator

196-8031, 196-8146

Fits BWH, DBN1 - DBN699, FDS301 and Above

Radiator
TBA 196-8039

Radiator

196-8039

Fits DBN700 and Above, FDS1 - FDS300

Radiator
TBA 210-7277

Radiator

210-7277

Fits BNN

Rec Driers/Accumulators

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2.40 x 10 Pad Mount - Dry-Tech Series
805-692

Heavy Duty Dry-Tech Series Receiver Drier

176-1902

Fits BNN, BWH, DBN, FDS

2.40 x 10 Pad Mount
805-6921

Standard Duty Receiver Drier

176-1902

Fits BNN, BWH, DBN, FDS

Switches/Electrical

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

High Pressure Switch

130-0270

Fits BNN, BWH, DBN, FDS

Low Pressure Switch Normally Open, Opens 5 PSI, Closes 31 PSI, M12x1.5 Thread
220-456

Low Pressure Switch

189-3156

Fits BNN

Thermostatic Switch
TBA 147-4815

Thermostatic Switch

147-4815

Fits BNN, BWH, DBN, FDS

High Pressure Switch
TBA 189-3157

High Pressure Switch

189-3157

Fits BNN

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