Section V: Illustrated

Transcription

1 Switches Relays volt -w/o Diode Amp volt -w/o Diode Amp RED DOT A/C VF4-65F11-12V, VF4A-65H11-24V 5Terminal, Weather Seal Relay, 70Amp Carrier/Transair ; Terminal (2 large, 2small) Relay, 40/50 Amp Carrier/Transair ; ; Terminal Switches &Electrical Parts Blower (A/C -Fan or Rheostat) Switches are used to turn either the blower motor, or A/C system, or heater system, on or off, or control the various speeds of the motor. Note: Abbreviations used in this section: NC =Normally Closed SPST =single pole, single throw NO =Normally Open SPDT =single pole, double throw DPST =double pole, single throw DPDT =double pole, double throw Blower/Fan/Rocker/Toggle Switches CHEV/GMC O.E Terminal CHEV/GMC O.E Terminal Rotary, 4Positions CHEV/GMC O.E Terminal, 4Positions Heater Fan Switch CHEV/GMC O.E Terminal, 4Positions CHEV/GMC O.E Terminal Rotary, 4Positions Heater-A/C Switch CHEV/GMC O.E Terminal, 4Positions CHEV/GMC Topkick O.E Terminal Freightliner O.E Terminal, 4Positions Truck Air Parts

2 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches Fan Switch Freightliner O.E. A Rocker Switch Freightliner O.E. BOA ; ABPN Terminal, w/2 Air Lines Freightliner O.E. BOA Terminal, w/pigtail Harness Rocker Switch - Bunk Freightliner A Rocker Switch Freightliner A ABPN Rocker Switch Frghtlnr ABPN H IHC Transtar O.E Terminal, OFF-ON-ON-ON IHC/NAVISTAR O.E C1 5 Terminal, OFF-ON-ON-ON Blower Fan/Switch IHC/NAVISTAR O.E C1 10 Terminal, OFF-ON-ON-ON Rotary Switch - Cab Bunk KW, Peterbilt BSM 6 Terminal Rocker Switch - Air Control KW, Peterbilt BSM 5 Terminal Rocker Switch- Cab Control KW, Peterbilt BSM 5 Terminal volt 3 Speed w/wiring Harness Freightliner O.E. A Truck Air Parts 451

3 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches Rocker - Bunk Control KW, Peterbilt BSM Fan & Thermostat Switch MACK O.E Terminal, w/2 wire harness On-Off Switch PETERBILT 362 O.E. HV Terminal, 3 Positions Bunk - Fan Control Peterbilt O.E. BCH56P Bunk - Fan Control Peterbilt O.E. BCH58P Rocker Switch - Fan Control SPST, 5 Terminal Peterbilt O.E. CCH33P SPDT=single pole, double throw Peterbilt O.E. CCH52P1 5 Terminal, OFF-ON-ON-ON Volvo White/White GMC O.E Terminal, 3 Speed Rocker Switch Volvo GM w/bergstrom O.E. V Terminal, NC=normally closed Bunk Switch Volvo GM w/harness O.E /24 volt SPST=single pole, single throw Kenworth O.E. K301-19, 65209P 5 Terminal, OFF-ON-ON-ON A/C On-Off Toggle Switch Peterbilt O.E KB 4 Terminals, 2 Positions Blower Fan Switch 12/24 volt Kenworth W900 w/kysor A/C O.E KB 5 Terminal, OFF-ON-ON-ON FORD F O.E. D3AZ-19986A 4 Terminal, 4 Positions Long shaft FORD F O.E. D5AZ-19986A 4 Terminal, 4 Positions Rocker Switch- Bunk Control KW, Peterbilt BSM Truck Air Parts

4 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches FORD L-SERIES O.E. D0AZ-19986A 5Terminal, OFF-ON-ON Ford F1HZ-19986A;YH518 4Terminal, 4Positions Ford F0HZ-19986A; YH507 4Terminal, 4Positions Ford F ; Sterling F4DZ-19986A; YH Toggle Switch (Black) 12/24 volt SPST=single pole, single throw RED DOT O.E. 71R Terminal, ON-OFF Toggle Switch (Black) 12/24 volt SPDT=single pole, double throw RED DOT O.E. 71R Terminal, ON-OFF-ON Rocker Switch 12 volt SPDT=single pole, double throw RED DOT O.E. 71R Terminal, ON-OFF-ON Rocker Switch 12 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal, ON-OFF-ON Toggle Switch (Black) 12/24 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal, ON-OFF-ON Rocker Switch 12 volt DPST=double pole, single throw RED DOT O.E. 71R Terminal, ON-ON Rocker Switch 12 volt SPST=single pole, single throw RED DOT O.E. 71R Terminal, ON-ON Safety Switch 12/24 volt SPDT=single pole, double throw RED DOT O.E. 71R Terminal, ON-OFF-ON Safety Toggle Switch 12/24 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal, ON-OFF-ON Blower Sw. (chrome) 12/24 volt DPDT=double pole, double throw RED DOT O.E. 71R Terminal, ON-ON-ON UNIVERSAL 12 volt and 24 volt use 5Terminal, 3Speed For short shaft use Rocker Sw -Illuminated, 12 volt SPDT=single pole, dbl throw RED DOT O.E. RD Terminal, ON-OFF-ON 2008 Truck Air Parts 453

5 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches Rocker Switch, 12 volt SPST=single pole, single throw RED DOT O.E. RD Terminal OFF-ON-ON Rocker Sw -Illuminated, 12 volt DPDT=double pole, double throw Red Dot O.E. 71R Terminal OFF-ON-ON Blower Toggle Switch, 12/24 volt DP=double pull RED DOT O.E. 71R Terminal OFF-ON-ON-ON Blower Toggle Switch, 12/24 volt DPDT=double pole, double throw RED DOT O.E. RD Toggle Switch 4 Terminal ON-OFF-ON 2Terminal Rocker Switch-Illuminated 12 volt, Green light SPST=single pole, single throw RED DOT O.E. 71R Terminal, ON-OFF Rocker Switch-Illuminated 12 volt, White light SPST=single pole, single throw RED DOT O.E. 71R0532 3Terminal, ON-OFF Rocker Switch-Illuminated 24 volt, Amber light SPST=single pole, single throw RED DOT O.E. 71R0884 4Terminal, ON-OFF Rocker Switch TransAir O.E Terminal, 12V Rocker Switch 12 volt TransAir O.E Terminal, 12V Terminal No Resistors UNIVERSAL 3 Position 12 volt and 24 volt use For long thrd shaft use volt only KYSOR O.E Tandem5 Terminals with Resistors, 3 Positions volt only KYSOR O.E Tandem 5 Terminals with Resistors, 3 Positions Used w/single Spd P.M. 2-Wire Motors Used w/single Spd P.M. 2-Wire Motors Rocker Sw-Illuminated, 24 volt DPDT=double pole, double throw RED DOT O.E. 71R Terminal OFF-ON-ON ON-OFF A/C Switch-Illuminated, 12 volt RED DOT O.E. RD Terminal Rocker Switch-Illuminated 12 volt, Blue light SPST=single pole, single throw RED DOT O.E. 71R Terminal, ON-OFF 2008 Truck Air Parts

6 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches UNIVERSAL , 12 volt only 3Terminals with Resistors, 3Positions Used w/single Spd P.M. 2-Wire Motors UNIVERSAL , 24 volt only 3Terminals with Resistors, 3Positions Used w/single Spd P.M. 2-Wire Motors Rocker Switch, 12 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal ON-OFF-ON Toggle Sw(chrome), 12/24 volt DPDT=double pole, dbl throw RED DOT O.E. 71R-0200 KYSOR O.E , Terminal ON-OFF-ON Fan Switch for Auxiliary Heater 2speed, 12/24 volt 4Terminal BLOWER SWITCH &HARNESS ASSEMBLY H.D. 40 amp Blower switch &harness for bus and coach applications gauge wire-color coded, heat shrink connectors 1-3/8 switch body, mounting nut and control switch knob Truck Air Parts 455

7 Switches & Electrical Parts Circuit Breakers Circuit Breakers are devices used in place of afuse to protect acircuit. There are manually resetable and automatic reset types of circuit breakers. Manual reset breakers remain open on overload until the reset button is depressed. Auto-reset breakers cycle or "continuously" reset until the overload is corrected. "Non-cycling" type II circuit breakers remain open until overload situation is corrected. Power must be disconnected for breaker to reset O.E Plug-in Type 30 Amp, 12 volt Non-cycling Type II IHC/NAVISTAR O.E C Amp, 12 volt Manual Push to Reset Type KYSOR O.E Amp, 12 volt Manual Push to Reset Type KYSOR O.E Amp, 12 volt Manual Push to Reset Type RED DOT O.E. RD Amp, 12volt Manual Push to Reset Type RED DOT O.E. RD Amp, 12 volt Amp, 12 volt Amp, 12 volt Amp, 12 volt Manual Push to Reset Type Amp, 12/24 volt Amp, 12/24 volt Amp, 12/24 volt Automatic Reset Stud Type w/ Bracket Automatic Reset 30 Amp, 12 volt Amp, 12/24 volt Amp, 12/24 volt Amp, 12/24 volt Amp, 12/24 volt Manual Push to Reset Type Carrier/TransAir A Amp, 12/24 volt A Amp, 12/24 volt B Amp, 12/24 volt A Amp, 12/24 volt A Amp, 12/24 volt Automatic Reset Carrier/TransAir Truck Air Parts

8 Switches & Electrical Parts Compressor &Clutch Switches Compressor or Clutch Switches are used to engage the A/C compressor clutch assembly when the switch or control is turned on Micro Switch V7-1C27E9-283; N A/C Compressor Switch, 12v IHC/NAVISTAR C wire A/C Compressor Switch, 12v Micro Switch BCH39P1 KW ; Terminal w/o lever Pushbutton 5Terminal -Illuminated, 12v Amp -12V, 3Terminals RD ; VL3L3014-D9; ; BSM A/C Switch -Illuminated RD Terminal, 12V amp, 12V,2Terminals SPDT=single pole, double throw V7-1C27E9-292; Control Switches /Modules /Potentiometers /Temperature Components Control Switches are used to operate the various functions and modes of the A/C and/or heater system, and are normally found on the A/C-Heater Control Panel Control Sensor FREIGHTLINER BOA Bunk Control Switch FREIGHTLINER A APADS A/C Protectin Unit Bunk Control Switch CM820 O.E ; P Temperature Probe Switch FREIGHTLINER O.E. BOA Evaporator Temperature Probe FREIGHTLINER VCC Duct Sensor Assembly FREIGHTLINER BOAD Temperature Potentiometer KENWORTH O.E , ACH49P1 (Male Connector) 3wire Temperature Potentiometer KENWORTH O.E (Female Connector) 4wire 2008 Truck Air Parts 457

9 Switches & Electrical Parts Control Switches /Modules /Potentiometers /Temp Comp (continued) Temperature Circuit Board KENWORTH O.E BSM Potentiometer Switch PETERBILT O.E (Male Connector) Potentiometer Switch PETERBILT O.E (Female Connector) Control Module Sensor PETERBILT P93CAA S Control Module VOLVO-GM O.E APADS/Control Module VOLVO O.E ; INDEX P APADS/Control Module VOLVO ; INDEX P APADS Control Module VOLVO , INDEX P, P C.T.C. TM Circuit Board Fits Trucks w/red Dot C.T.C. TM Systems RED DOT O.E. RD C.T.C. TM Resistor Kit Fits Trucks with Red Dot C.T.C. TM Systems RED DOT O.E. RD Sleeper Control RED DOT O.E. RD C.T.C. TM Resistor Diode (Rotary) RED DOT O.E. RD APADS/Module CM813 -ECM Mack O.E. 228RD31 INDEX P White label APADS/Module CM813 non-ecm INDEX P Truck Air Parts

10 Switches & Electrical Parts PRESSURE SWITCHES Pressure Switches are used to cycle the A/C compressor or clutch either on or off, or both, (depending upon the design of the switch) when pressures in the A/C system either exceed or fall below the proper operating pressures. In some systems, pressure switches are also used to engage the engine cooling fan. There are two basic groups of pressure switches, those normally open, and those normally closed in their factory settings. Normally open switches disallow current flow within their factory setting range. Normally closed switches allow current flow within their factory setting range. Switches should be replaced with the same type operation and pressure settings. Low pressure switches activate (open or close depending on whether the switch isnormally open or closed) on pressure drop. High pressure switches activate on pressure rise. While the settings listed reflect factory settings, most switches will fluctuate +or-3to10p.s.i. A "quick find" chart is shown below for your convenience (does not include GM or Ford Accumulator, pressure cycling type). P artno. T ype 1 Opens Closes Fitting Leads 2 T erm. m L NOH /4" SAE... 5"... SPECIAL NOH /4" SAE /2".SPECIAL NCH METRIC M10 6"... SPECIAL NCH /4" SAE... 6"... SPECIAL NCH METRIC... 6"... SPECIAL NCH /4" SAE... 5"... NONE NCH /4" SAE... 8"... NONE NCH /4" SAE... 5"... SPECIAL NCH /4" SAE... 5"... SPECIAL NCL /4" SAE... 10"... SPADE (MXF) NCH /4" SAE... 5"... SPECIAL NCH METRIC... 5"... SPECIAL NCH METRIC... 5"... SPECIAL NCH METRIC... 5"... SPECIAL NCH /4" SAE... 4"... SPECIAL NOH /4" SAE... 4"... SPECIAL NOL /4" SAE... 4"... BULLET (MXF) NOH /4" SAE... 4"... SPECIAL NCH NCH /4" SAE NCH /4" SAE NOL /4" SAE NOL /4" SAE NOL MM NOH /4" SAE... 12"... NONE NCL /4" SAE... 5"... SPADE (MXF) *. NOH /4" SAE... 5"... NONE NCH /4" SAE... 7"... NONE NOL /4" SAE... 4"... NONE NOL /4" SAE... 2"... SPADE (MXF) NOH /4" SAE... 6"... NONE Notes: P artno. T ype 1 Opens Closes Fitting Leads 2 T erm. m NCH METRIC NOL METRIC... 3"... SPADE (MXF) NOH METRIC... 6"... NONE NCH METRIC... 6"... NONE NCH METRIC... 3"... SPADE (MXF) NOH METRIC... 6"... NONE NOH METRIC M NOL METRIC M NOH MM Female NOL METRIC... 5"... BULLET (MXF) NOL /4" SAE... 5"... BULLET (MXF) NOH /4" SAE... 4"... SPECIAL NCH /4" SAE... 6"... SPECIAL NOL /4" SAE... 6"... SPECIAL NOH /4" SAE... 6"... SPECIAL NOL METRIC M NCH METRIC M NOH /4" SAE NCH M NCL M NOL /8"-24 UNF-2A NONE SPADE (M) NCH /4" SAE... 8"... NONE NCH /4" SAE... NONE SPADE (M) NCL /4" SAE... 11"... NONE NCH /4" SAE... 11"... NONE NCL METRIC M NCH /4" Flare NOL M NCH /4" Flare NCH M NCH /2" NPTF NOH /2" NPTF * Controls engine fan operation. 1 NC = Normally Closed, NO = Normally Open, L = Low Pressure, H = High Pressure. 2 Switches supplied may vary in lead length and/or terminal specifications due to various manufacturer designs. PRESSURE SWITCH IDENTIFICATION CHART (FACTORY NO.) ID# P art tno. ID# P art tno. ID# P art tno. ID# P art tno. 20PS001KA300K228K PS001KW028D007C PS027MA260K210K PS028MB260K210K PS029MB030E007C PS030MB300K200K PS034MA375K250R PS059MB300K210K PS125MA034D006B PS127MA034D025G PS129MB350K250K PS131MA260K180K PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS C1-205NC C1-275NC NC NO NO NC NC NC NC NC NC IMR NO PM-516K2-034NOA PM-516N PM-635M2-325NCA PM-637M2-3240NOA PM-638M PM-516K2-034NOA PM-546R2-275NCA PS-80KI024B Truck Air Parts 459

11 Switches & Electrical Parts Pressure Switches Accumulator Pressure Cycling Switch (R12) Normally Open. Cycles Clutch off atapprox. 25 p.s.i., on at approx. 46 p.s.i. CHEV &GMC Brigadier &Bruin O.E , Compressor Pressure Cycling Switch (R12) M12 thread CHEV/GMC O.E Black w/yellow Band -2Pin Compressor Pressure Cycling Switch (R12) M12 thread CHEV/GMC O.E Black w/yellow Band -2Pin Accumulator Pressure Switch (R134a) 3/16 thread CHEV/GMC O.E , , Beige -2Pin A/C Comp.Pressure Cycling Switch (R134a) Low press Normally Open. Open: 30-32psi, Close: 38-40psi M12 Metric Female CHEV/GMC Black -2Pin A/C Comp.Refrigerant Press Switch (R134a) Normally closed. Open: 350psi, Close: 250psi CHEV/GMC O.E ; M10 Male thread, Green -2Pin A/C Comp.High Pressure Cut-off switch assy. CHEV/GMC O.E M10 Metric Threads Normally Closed. Opens at430 psi, Closes at 180 psi. Needed when retrofitting vehicles without O.E. H.P.cutout switch (Also see & ) High Pressure Cut-Out Switch CHEV/GMC (R134a) O.E , , Normally closed 257 F Blue -2Pin (Replaces orange) A/C Comp.Low Pressure Cut-Out Switch (R134a) M12 thread CHEV/GMC O.E Black -2Pin Comp. Low Press Cycling Switch (R134a) M12 thread CHEV/GMC O.E M12 thread, Black/Yellow -2Pin A/C Cycling Switch (R134a) M12 thread CHEV/GMC O.E A/C Low Pressure Cut Off Switch (R134a) M12 thread, 2Pin CHEV/GMC O.E TECH TIP Low Pressure Switches Activate on pressure drop Spade Low pressure Cycling Switch M12 threads, Yellow GM A/C Cycling Switch M12 threads Topkick/Kodiak A/C Cycling Switch Silverado, Suburban es Activate on arise in pressure Truck Air Parts

12 Section V:Illustrated Switches &Electrical Parts Pressure Switches White Gold Accumulator Press.Cycling Switch (R12) Normally Open. Cycles Clutch Off atapprox. 25 p.s.i., and On at approx.46 p.s.i. FORD O.E. E0VY-19E561A, E35H19E561AA A/C Clutch Cycling Switch (R134a) Normally Open. Female 12MM Cycles clutch Off atapprox. 23 p.s.i., and On at approx. 46 p.s.i. FORD O.E. F3AH-19E561AA A/C Clutch Cycling Switch, 12mm (R134a) Low Press. Normally Open. FORD O.E. F5VY-19E561A, F6RZ-19E561AA 2Pin Pressure Switch M10 threads FORD L-Ser. O.E. F3DH19D594AA 4terminal trinary type Air Temprature Control ATC Sensing Unit FORD YC3Z-19C733CA Pressure Cycling Switch E-Series Sterling F3AZ-19D594C Normally Open. Opens at 210 p.si., Closes at 300 p.s.i. Freightliner BOA ; 20PS39-36, 37; RD Normally Open. Opens at 174 p.s.i. Closes at 260 p.s.i. Freightliner A ; 2OPS (R12) Female Binary Switch 1/4" Opens: p.s.i. (low) Closes: 384 p.s.i. (high) Fan Cupling Switch Opens at300 p.s.i. Closes at 250 p.s.i. Metric M10 Female thread Freightliner A ; 4OPS Normally Closed. Opens at 265 p.s.i. Closes at 180 p.s.i. Female thread 1/4" SAE Freightliner A ; 2OPS (R134a) Normally Open. Opens: 250 p.s.i., Closes: 300 p.s.i. Metric M10x1.5 Female Freightliner A ; 41PS (R134a) Female Binary Switch, M10 Off: 28.5 p.s.i. (low) Off: 350 p.s.i. (high) Binary Switch M10 Fitting Off: 28.5 p.s.i. (low) Off: 435 p.s.i. (high) Freightliner (R12) Normally Closed. Opens: 275 p.s.i., Closes: 225 p.s.i. (Can besubstituted for P/N on IHC applications if desired.) 2OPS028MB260K210K 2008 Truck Air Parts 461

13 Switches & Electrical Parts Pressure Switches High Pressure Cycling Switch (R12) Normally Closed. Opens: 300 p.s.i., Closes: 210 p.s.i. IHC/Navistar O.E C1 2OPS059MB300K210K (R12 /R134a) Normally Closed. Opens: 310 p.s.i., Closes: 210 p.s.i. IHC/Navistar C1; 2OPS40-1 (For metric threads use ) (R12) Normally Closed. Opens: 100 p.s.i., Closes: 250 p.s.i. IHC/Navistar C1; 2OPS Low Pressure Switch (R12) Normally Closed. Opens: 30 p.s.i., Closes: 15 p.s.i. Female Thread1/4" SAE IHC/Navistar C1; 20PS BLACK Low Pressure Switch Opens: 35 p.s.i., Closes: 5p.s.i. Female Metric M12 Thread IHC/Navistar C1; 2Pin GREEN (R134a) Normally Open. Open: 375 p.s.i., Close: 205 p.s.i. Female Metric M10 Thread IHC/Navistar C1; 2Pin GREY (R134a) IHC/Navistar C1; 20PS BLUE INDEX Temp. Switch/APADS NAVISTAR C91; 205NC-432; P RED Fan/Shutter Switch Opens: 300 p.s.i., Closes: 210 p.s.i. Female thread 1/4" SAE NAVISTAR C1; 40PS8-1 (For metric threads use ) Opens: 250 p.s.i., Closes: 100 p.s.i. Female Metric M10 Thread NAVISTAR O.E C1 (Replaces Std. Thread) GREY Opens: 310 p.s.i., Closes: 210 p.s.i. Female Metric M10 Thread NAVISTAR O.E C1 (Replaces Std. Thread) SKY BLUE Packard RED Opens: 275 p.s.i., Closes: 225 p.s.i. Female Metric M10 Thread NAV. O.E C1 (Replaces Std. Thread) TECH TIP Low Pressure Switches Activate on pressure drop SKY BLUE APADS Low Pressure Switch Metric M12 threads NAVISTAR O.E C1; NC348; P SKY BLUE APADS Metric M10 threads NAVISTAR O.E C NC157; P Low Pressure Switch, Metric M12 Normally Closed. Opens: 30 p.s.i., Closes: 13 p.s.i. KENWORTH O.E , F es Activate on arise in pressure Truck Air Parts

14 Switches & Electrical Parts Pressure Switches , Metric M10 Normally Closed. Opens: 355 p.s.i., Closes: 250 p.s.i. KENWORTH O.E RED Female Binary Switch (R134a) RED Off: 28.5 p.s.i. (low) Opens: 285 p.s.i., Closes: 240 p.s.i. APADS, M10 Off: 313 p.s.i. (high) KENWORTH O.E. K , 285 NC, PACCAR O.E ; MACK O.E. 1MR3550M K , 40PS P Metric Female M10 Thread (R134a) Normally Open. Opens: 190 p.s.i., Closes: 250 p.s.i. Female thread 1/4" SAE PETERBILT ; 20PS Male Bullet Female Low Pressure Switch (R12) Normally Open. Opens: 15 p.s.i., Closes: 35 p.s.i. PETERBILT , 2OPS (R134a) Normally Open. 1/4" SAE Opens: 210 p.s.i., Closes: 340 p.s.i. PETERBILT ; 20PS (R134a) 1/4 SAE PETERBILT ; 20PS INDEX Pressure Switch/APADS M10 threads, red wires VOLVOGMO.E , ; 325NC229; P (Replaces ) INDEX Pressure Switch/APADS M12 threads, blue wires VOLVOGM O.E ; PM637M2-3240; 040N0288; P INDEX Pressure Switch/APADS Normally Closed: 275 p.s.i. M10 threads, yellow wires VOLVOGM O.E ; INDEX P, P APADS Switch VOLVOO.E ; P APADS Switch VOLVO P High Press Sw 275 NC, 1/4 SAE VOLVO O.E ; INDEX P; P High pressure, NC Open: 375psi, Close: 200psi 1 / 4 "Female Flare Spade Thrd High pressure, NC Open: 300psi, Close: 200psi 1 / 4 "Female Flare; 20PS Truck Air Parts 463

15 Switches & Electrical Parts Pressure Switches Low pressure, normally open Open: 12psi, Close: 34psi 1 / 4 "Female Flare Spade Thrd Low pressure, NO Open: 6psi, Close: 34psi 1 / 4 "Female Flare Spade Thrd Low pressure, NO Open: 6psi, Close: 34psi 10MM Metric Female Packard (R12) Normally Open. Opens: 250 p.s.i., Closes: 375 p.s.i. KYSOR O.E IHC/NAVISTAR O.E C1 2OPS034MA375K250R Low Pressure Switch Packard (R12) Normally Closed. Open: 30 p.s.i., Close: 7p.s.i. max. KYSOR O.E IHC/Navistar C1, 20PS85-8 (For metric threads use ) 2OPS029MB030E007C Fan Override Switch (R12) Normally Open. Opens: 210 p.s.i., Close: 260 p.s.i. KYSOR O.E (For metric threads use ) 2OPS131MA260K180K (R12) Normally Closed. Opens: 300 p.s.i., Closes: 200 p.s.i. KYSOR O.E IHC/NAVISTAR O.E C1 (For metric threads use ) 20PS030MB300K200K Low Press Switch (R12) Normally Open. Packard Opens: 6p.s.i., Closes: 34 p.s.i. KYSOR O.E , IHC/NAVISTAR O.E C2 (For metric threads use ) 20PS125MA034D006B Packard Low Pressure Switch (R12) Normally Open. Opens: 25 p.s.i., Closes: 34 p.s.i. KYSOR O.E , OPS127MA034D025G (R12) Normally Open. Opens: 210 p.s.i., Closes: 260 p.s.i. KYSOR O.E (For metric threads use ) 20PS027MA260K210K Opens: 200 p.s.i., Closes: 300 p.s.i. M10 Metric Threads, Female KYSOR O.E ; ; 20PS Packard Low Pressure Switch (R134a) Normally Open. Opens: 6p.s.i., Closes: 34 p.s.i. M10 Metric Threads KYSOR O.E ; 20PS309-9 TECH TIP Low Pressure Switches Activate on pressure drop (R134a) Normally Open. Opens: 210 p.s.i., Closes: 260 p.s.i. M10 Metric Threads KYSOR O.E ; 20PS Opens: 260 p.s.i., Closes: 210 p.s.i. M10 Metric Threads KYSOR O.E , 20PS Packard Opens: 350 p.s.i., Closes: 260 p.s.i. M10 Metric Threads KYSOR O.E , 20PS310-5 es Activate on arise in pressure Truck Air Parts

16 Switches & Electrical Parts Pressure Switches (R134a) Normally Open. Opens: 180 p.s.i., Closes: 260 p.s.i. M10 Metric Threads KYSOR O.E , 20PS (R134a) Normally Open. Opens: 250 p.s.i., Closes: 350 p.s.i. M10 Metric Threads KYSOR O.E Low Pressure Switch (R134a) Normally Open. Opens at26p.s.i., Closes at 34 p.s.i. M10 Metric Threads KYSOR O.E , 20PS Spade Thrd High pressure, NO Open: 210psi, Close: 260psi 10MM Metric Female Low Press.Switch (R134a) Normally Open. Opens at 7p.s.i. Closes at 28 p.s.i. M10 Metric Threads Red Dot O.E. RD PS001KW028D007C Low Pressure Switch (R12) Normally Open. Opens: 10 p.s.i. Closes: 42 p.s.i. 1/4" SAE Threads Red Dot O.E. RD P (R12/R134a) Normally Open. Opens: 170 p.s.i., Closes: 215 p.s.i. 1/4" SAE Female Thread Red Dot OE RD ; 2OPS (R12/R134a) Normally Closed. Opens: 340 p.s.i. Closes: 210 p.s.i. Female 1/4" SAE Thread Red Dot OE RD ; 20PS Low Pressure Switch (R12/R134a) Normally Open. Closes: 42 p.s.i., Opens: 32 p.s.i. Female 1/4" SAE Thread Red Dot OE RD , 20PS Fan Override Switch (R12/R134a) Normally Open. Opens: 190 p.s.i., Closes: 250 p.s.i. Female 1/4" SAE Thread Red Dot OE RD , 20PS BEIGE Low Pressure Switch (R134a) Normally Open. Opens: 23 p.s.i. Closes: 47 p.s.i. Metric M12 Thread Red Dot O.E. RD Peterbilt , P93CAA High Press Switch PURPLE Opens: p.s.i. Closes: p.s.i. Metric M10 Threads Red Dot O.E. RD Peterbilt , P93CAA TECH TIP GRAY Fan Overide Switch (R134a) Normally Open. Opens: 200 p.s.i., Closes: 270 p.s.i. Metric M10 Threads Red Dot O.E. RD Peterbilt , P93CAA Packard High pressure, Normally Open Open: 250psi, Close: 375psi 1/4" SAE Female, RD APADS NC Opens: 300 p.s.i., Close: 260 p.s.i. M10 threads, O.E P (Replaces ) Low Pressure Switches Activate on pressure drop. es Activate on arise in pressure Truck Air Parts 465

17 Switches & Electrical Parts Pressure Switches APADS Low Pressure Switch NC Opens: 34 p.s.i., Closes: 10 p.s.i. M12 threads, O.E P (Replaces , , ) Low Press Switch 2Male Spade (R12) On: 25 p.s.i., Off: 35 p.s.i. Prevents Compressor Damage Mounts on Drier Male Thread 3/8-24 UNF-2A Used on Red Dot, Freightliner, Kenworth, Peterbilt, &White. UNIVERSAL 1/4" SAE Red Dot O.E. RD Packard (R12) Normally Closed. Opens: 325 p.s.i., Closes: 250 p.s.i. Attaches to High Side Service Port Connection. UNIVERSAL Female Thrd 1/4" SAE 20PS129MB350K250K Binary Cut-out Switch (low) 28.5 psi (high) 455 psi 3/8"-24 Male Threads 1/4" SAE Switch for & Low Pressure Switch, 1/4 SAE (R12/R134a) 30 psi -10psi Trans Air A/C O.E AC Ind. O.E , 1/4 SAE (R12/R134a) 350 psi -250 psi Trans Air A/C O.E psi PS80K Low Pressure Switch Opens: 20 p.s.i., Closes: 4p.s.i. Metric M10 Thread CASE O.E A Deutsch High pressure, normally closed Open: 300psi, Close: 265psi M10 Female Schrader, R134a O.E P (Replaces ) APADS High Press Fan Trigger Switch Normally Closed, 1/4 SAE Set: 275, Reset: 235 O.E P (Replaces ) APADS Low Pressure Switch NO M12 threads, Set: 34, Reset: 10 INDEX P Conversion Kit VOLVO O.E ; INDEX P APADS Normally Closed, 1/4" Flare Open: psi. Close 200psi INDEX P TECH TIP Low Pressure Switches Activate on pressure drop APADS, M10 Normally Closed, Set: 325, Reset: 275 INDEX P, APADS Temperature Switch Normally Closed, Set: 205 1/2 NPTF, INDEX P (Replaces ) APADS Temperature Switch Normally Open, Set: 200 1/2 NPTF, P; ; N es Activate on arise in pressure Truck Air Parts

18 Switches & Electrical Parts Resistors Speed. 3 Terminal CHEV/GMC O.E CHEV/GMC O.E Resistor Che/GMC Blower Mtr Resistor GMC C Resistor, 4 terminal Ford 4C4H19A-706AA Speed. 3 Terminal w/cage Freightliner O.E Speed. 4 Terminal w/cage Freightliner BOA , RDH-RD Circuit Board 3 Speed. 4 Terminal Freightliner BOA Speed. 4 Terminal IHC/NAVISTAR C Terminal NAVISTAR O.E C Resistor 3 Speed Resistor 5 Terminal Terminal KENWORTH O.E Speed. 4 Terminal MACK O.E , 6152-DA Speed. 4 Terminal MACK O.E Resistor Circuit Board Mack Terminal Peterbilt O.E. P93CAA S 2008 Truck Air Parts 5 Terminal 467

19 Switches & Electrical PartsSection V: Illustrated Resistors Speed. 3Terminal VOLVO V , (Uses resistor) Speed. 3Terminal VOLVO GM O.E. V Bergstrom O.E Terminal VOLVO GM O.E Speed. 3Terminal KYSOR O.E For 3Speed Operation. Used in Conjunction with P.M. 2 Wire Motors. 3terminal. RED DOT O.E. 71R C.T.C. TM Resistor Kit Fits Trucks with Red Dot C.T.C. TM Systems Red Dot O.E. RD M C.T.C. TM Resistor Diode (Rotary) RED DOT O.E. RD Resistor Block OHM 4Terminal Trans Air, A/C Industries (Can replace ; 3term. type) Solenoid Switches /Valves Preferred Mounting Position -Cap Down Coil Solenoid Switches Continuous Operation 5/16-24UNF Threads Single Pole, Normally Open 3Terminal N.O. Contact N.O. Contact /150 Amp... 12v KYSOR O.E /50 Amp... 24v KYSOR O.E INLET OUTLET Air Sensing Switch, NC Normally Closed, 1 / 8-27 NPTF Open at 25 psi A volt Liquid Line Applications #6 Female O-ring volt Air Solenoid Valve Normally Open or Closed 1 / 8 "Thread Air Sensing Switch, NO Normally Open, 1 / 8-27 NPTF Close between psi volt Air Solenoid Valve Normally Open or Closed 1 / 8 "Thread Truck Air Parts

20 Switches & Electrical Parts Superheat Switches and Thermal Limiters Superheat Switches (and thermal limiter fuses) are found on some earlier model Chev/GMC trucks. These two components work in conjunction with one another. When the internal compressor temperature rises due to aloss of refrigerant or arestriction in the system, the superheat switch closes and allows current to travel to the thermal limiter fuse, melting the fuse, thereby preventing current from operating the compressor and clutch Superheat Switch Kit, 12 Volt Normally Open. For Rear Port on GM Compressor CHEV/GMC O.E Trinary II Switches are found on systems equipped with radiator shutters and/or electric orair fan clutches. They perform three functions: A. Prevents compressor operation if system has refrigerant loss, or ambient temp. drops too low. B. Prevents compressor operation if high side pressure rises too high. Automatically resets when pressure drops to normal. C. Overrides shutter/fan control to keep head pressure within normal range. Binary Trinary and Binary Switches R12/R134a Compatible Switches perform two functions; A. Prevents compressor operation if system has refrigerant loss or ambient temp. drops too low. B. Prevents compressor operation if high side pressure rises too high. Automatically resets when pressure drops to normal. Low Pressure High Pressure Fan/Shutter Part No. Type(1) Open(2) Close(3) Open Close Open(4) Close(3) Fitting Leads Terminals B (3) Female 1/4" SAE None Spade B (3) M10 metric None Spade B (3) M10 metric None None B (3) 275(5) M10 metric Special NOT 22± ±25 230± Female 1/4" SAE None Spade NOT 22± ±25 230± Male 3/8" -24 UNF None Spade NCT 22± ±25 230± Female 1/4" SAE None Spade NCT 22± ±25 230± Male 3/8" -24UNF None Spade B (3) (5) Female 1/4" SAE None Spade B (3) (5) Male 3/8" -24UNF None Spade BNC (3) Male 3/8" 1/4" SAE None Spade Notes: (1) NC = Normally Closed NO = Normally Open B=Binary T=Trinary (2) Descending pressure (3) Rising pressure (4) Below closing pressure (5) Opening pressure 2008 Truck Air Parts 469

21 Switches & Electrical Parts Trinary and Binary Switches R12/R134a Compatible Binary Switch Normally Open Freightliner O.E ; FJK-SP4052, 5P4071 Std. Female Thread 1/4 SAE Binary Switch Freightliner O.E. A ; FJK-SP4097 Metric M10 Female Thread Binary Switch M10 Fitting Binary Switch w/harness MACK O.E. IMR-3550M Metric Female Thread -M Trinary II Switch Normally Open. (For Fan/Override/Shutter Circuit) Red Dot OE RD , 71R Trinary II Switch Normally Open. (For Fan/Override/Shutter Circuit) 3/8-24Male Thread. Red Dot O.E. RD , 71R Trinary II &Binary Harness Boot (Used in Conjunction with P/N & , Switches.) Red Dot O.E. RD , 71R Trinary II Switch Normally Closed. (For Fan/Override/Shutter Circuit) Red Dot O.E. RD , 71R Trinary II Switch Normally Closed. (For Fan/Override/Shutter Circuit) Male Thread 3/8-24 Red Dot O.E. RD , 71R Binary Switch Red Dot O.E. RD , 71R Binary Switch 3/8-24Male Thread Red Dot O.E. RD , 71R Binary Switch Boot (Used with and Switches.) RED DOT O.E. RD wire harness Binary Cut-out Switch 3/8"-24 Male Threads 1/4" SAE Switch for & Truck Air Parts

22 Switches & Electrical Parts Wiring Components for Relays and Switches (for Clutch Coil Pigtails see page 245) Switch No. Pigtail Switch No. Pigtail N/A N/A N/A N/A Switch No. Pigtail N/A Switch No. Pigtail Switch No. Pigtail Harness A/C Industries O.E terminal connector (Fits & switches) Low Pressure Switch Harness Fits switch P/N's , , and UNIVERSAL- 2Wire Harness -5Wire Ford O.E. D5AB C Bosch Mini-Relay Connector Works on4or5prong Relays (Fits relay P/N's , ) UNIVERSAL- 5Wire Ford Press Cycling Switch Harness (Fits switch P/N , ) 2Wire GM Low Pressure Switch Pigtail -2Wire GM High Blower Relay Pigtail -4Wire GM A/C Cutout Relay Pigtail -5wire with weatherproof seal Low Pressure Switch Harness UNIVERSAL -48 leads Pigtail for Switches 2wire Pigtail for terminal relay 70 amp Carrier Trans Air, Pigtail for terminal relay, 40 amp 2008 Truck Air Parts 471

23 Thermostatic Switches Thermostatic Switches The thermostatic switch controls the electrical circuit to the compressor clutch. Most thermostat switches have acapillarytubewhich is inserted into the fin area of the evaporator coil to sense its temperature.matching both the original location and the depth of the tube insertion during replacement is critical to obtaining correct system performance.some thermostats are adjustable, others are fixed in their settings. Inaddition, some are solid state controls (Thermisters) and are used in conjunction with aprobe to sense evaporator temperature.excessive cycling of the clutch, or no cycle at all, may indicate amalfunctioning thermostatic switch. QUICK REFERENCE CHART THERMOSTAT SWITCH SPECIFICATIONS Tube Cut In Cut Out PART NO. Type Length Temp Temp Notes Preset... 12" Preset... 16" Preset... 24" Preset... 26"... N/A... N/A Electronic Thermister Electronic Thermister Electronic Probe Cable... 21" Knob... 36" Side terminals Preset... 30" Preset " Knob Adj. bunk cont Knob Adj. bunk cont. Tube Cut In Cut Out PART NO. Type Length Temp Temp Notes Knob... 48" Knob... 36" Preset... 18" Preset... 14" Preset... 21" Knob... 24" Knob... 72" Cable... 18" w/micro switch Cable... 30" Cold towards cable Cable... 42" Cold away from cable Preset... 24" Cable... 22" THERMOSTATIC SWITCH INTERCHANGE Ranco Eaton/Cutler Truck Air Part No. Part No. Part No. A N/A A N A N A N A N A N/A A N/A A N/A A N/A A N A N/A A N/A A N/A A N/A (1) A N/A A N/A A N/A A N A N/A Ranco Eaton/Cutler Truck Air Part No. Part No. Part No. A N A N/A A N A N/A A N A N/A A N A N/A A N/A A N A N A N A N A N/A A N A N A N A N A N/A Ranco Eaton/Cutler Truck Air Part No. Part No. Part No. A N/A A N/A N/A N N/A N N/A N N/A N N/A N N/A N N/A N N/A N N/A N N/A N N/A N (1) P/N is not adirect replacement for trucks equipped with shutters using an O.E. 3-terminal thermostatic switch. See IHC/Navistar section for instructions for modifying systems Truck Air Parts

24 Thermostatic Switches Thermostatic Switches Listed in ascending order by part number " Cap.Tube -Preset Cuts in 44.5 F, cuts out 30.5 F General Motors O.E " Cap Tube -Preset Cuts in 28 F, cuts out 35 F Freightliner O.E. BOA " Cap Tube -Preset Cuts in 44 F, cuts out 34 F. IHC/NAVISTAR O.E C " Cap.Tube -Preset NAVISTAR O.E C " Cap.Tube -Preset Cuts in at 40, cuts out at 31 KENWORTH O.E. RDHRD " Cap Tube -Cable Operated Cuts in 31 F, cuts out 40 F VOLVOGM O.E. V Knob Operated -36" Cap Tube Cuts in 34 F, cuts out 26 F VOLVOGM " Cap Tube -Preset Cuts in 39.5 F,cuts out 31 F VOLVO-GM O.E " Cap Tube -Preset VOLVO-GM O.E Bunk Control Adjustable 60 F 80 Fsetting Bi Metal positive on/off Red Dot &Kysor RD4430, " Capillary -Preset Temp Range F Hole Spacing 2-3/4" Electronic 5amps -12volt Universal 48" Cap.Tube Knob Operated Cuts in 34 F, cuts out 26 F Rotary 36" Cap.Tube Knob Operated, RD Cuts in 34 F, cuts out 52 F " Capillary -Rotary Temp Range F RD " Cap.Tube -Preset Cuts in 36 F, cuts out 24 F FORD F-SER. O.E. D3DH-19618A " Cap.Tube -Preset Cuts in at 42 F, out at 28 F FORD E-SER. VAN E5UZ-19618A 2008 Truck Air Parts 473

25 Thermostatic Switches Thermostatic Switches Listed in ascending order by part number " Cap.Tube -Pre Set Cuts in 39 F, cuts out 33 F Kenworth, Mack, Peterbilt Universal 24" Cap.Tube, Knob operated Cuts in34 F, cuts out 26 F Universal 72" Cap.Tube, Knob operated Cuts in 35 F,cuts out 28 F Cable Operated 18" Cap.Tube. Double Pole with micro switch for shutter operation Cuts in 40 F,cuts out 28 F Kysor SYSTEMS O. E Cable Operated 30" Cap.Tube Cuts in 36 F,cuts out 28 F IHC/NAVISTAR O.E C Cable Operated 42" Cap.Tube Cuts in 40 F,cuts out 30 F IHC/NAVISTAR O.E C Preset Switch with side mount 24" Cap.Tube Cuts in 39.5 F,cuts out 31 F Freightliner, Mack, Peterbilt Cable Operated 22" Cap.Tube Cuts in 34 F,cuts out at 26 F VOLVOGMO.E Truck Air Parts