Improved ARD Heater Assemblies Are Now Used on Certain C9.3, C13, C15, and C18 Machine Engines {4493} Caterpillar

Improved ARD Heater Assemblies Are Now Used on Certain C9.3, C13, C15, and C18 Machine Engines {4493}

Usage:

826K 232

Articulated Truck: 725C (S/N: TFB1-UP); 730C (S/N: TFF1-UP); 735C (S/N: TFJ1-UP); 745C (S/N: TFK1-UP)
Bulldozer: D6R Series II (S/N: BHM1-UP)
Ejector Truck: 730C EJECTOR (S/N: TFH1-UP); 740C EJECTOR (S/N: TFN1-UP)
Excavator: 336E (S/N: JEA1-UP; RZA1-UP; KED1-UP; YCE1-UP; TEG1-UP; FJH1-UP; GTJ1-UP; JRJ41-UP; SSL1-UP; YEP1-UP; CMR1-UP; HDW1-UP; DPX1-UP; BZY1-UP; GNY1-UP; TMZ1-UP); 336F (S/N: TZA1-UP; RKB1-UP; LTP1-UP; KFT1-UP; MTW1-UP; DFY1-UP; WTZ1-UP); 336F MHPU (S/N: B341-UP); 340F (S/N: YBF1-UP); 349E (S/N: FJB1-UP; ETC1-UP; DGE1-UP; SPG1-UP; TFG1-UP; RGH1-UP; KCN1-UP; MZW1-UP; KFX1-UP; MPZ1-UP; WHZ1-UP); 349F (S/N: BZ21-UP; KEA1-UP; HPD1-UP; SFG1-UP); 352F (S/N: YEG1-UP; A9J1-UP; KBP1-UP); 374F (S/N: DNM1-UP); 390F (S/N: MGF1-UP)
Landfill Compactor: 826K (S/N: 2321-UP); 836K (S/N: TWZ1-UP)
Material Handler: 390F MHPU (S/N: B371-UP)
Mobile Hydraulic Power Unit: 374F MHPU (S/N: DP41-UP); 390F MHPU (S/N: PT71-UP)
Motor Grader: 12M Series 3 (S/N: N9B1-UP; N9F1-UP; N9P1-UP; N9R1-UP); 140M Series 3 (S/N: N9D1-UP; N9G1-UP; N9J1-UP; N9M1-UP); 14M Series 3 (S/N: N9S1-UP); 160M Series 3 (S/N: N9E1-UP; N9K1-UP; N9L1-UP; N9T1-UP)
Off Highway Truck: 770G (S/N: RMA1-UP; KDH1-UP); 772G (S/N: KEX1-UP)
Pipelayer: PL72 (S/N: P721-UP)
Reclaimer Mixer: RM500B (S/N: MB91-UP)
Soil Compactor: 825K (S/N: 2331-UP)
Track-Type Tractor: D6T (S/N: CR31-UP; CG81-UP; RAD1-UP; STE1-UP; MEL1-UP; WRN1-UP; KMR1-UP; WES1-UP; SGT1-UP; TMY1-UP; HTZ1-UP); D7E (S/N: HKA1-UP; SSH1-UP); D8T (S/N: FMC1-UP); D9T (S/N: REX1-UP)
Wheel Dozer: 824K (S/N: 2341-UP); 834K (S/N: TWY1-UP)
Wheel Loader: 966M (S/N: DYC1-UP; KJP1-UP); 966M Series XE (S/N: P6C1-UP); 972M (S/N: A8P1-UP; JPR1-UP); 972M Series XE (S/N: EDW1-UP); 980M (S/N: KRS1-UP; N8T1-UP); 982M (S/N: F9A1-UP; K1Y1-UP); 988K (S/N: TWX1-UP)
Wheel Tractor Scraper: 621K (S/N: WTA1-UP; WTE1-UP); 623K (S/N: WTB1-UP); 627K (S/N: WTC1-UP)

Description Of Change: The improved relay assemblies have an updated high side driver chip.

Adaptable To: The improvement has been made to the 350-0036 Relay As (Rev 04).

The improved relay assemblies are adaptable to the above engines back to first production.

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Illustration 1	g06004230
350-0036 Relay As (Rev 04)

This change is effective for the serial numbers listed in Table 1.

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Table 1
Effective Serial Number
S/N:N9B00238-UP
S/N:N9F00437-UP
S/N:N9P00168-UP
S/N:N9R00182-UP
S/N:N9D00531-UP
S/N:N9G00169-UP
S/N:N9J00365-UP
S/N:N9M00251-UP
S/N:N9S00109-UP
S/N:N9E00111-UP
S/N:N9K00128-UP
S/N:N9L00133-UP
S/N:N9T00165-UP
S/N:RKB01560-UP
S/N:TZA00435-UP
S/N:WTZ00251-UP
S/N:LTP00206-UP
S/N:YBF00002-UP
S/N:KFT00309-UP
S/N:MTW00176-UP
S/N:DFY00236-UP
S/N:B3400110-UP
S/N:BZ200486-UP
S/N:HPD00500-UP
S/N:KEA00169-UP
S/N:KBP00251-UP
S/N:YEG00230-UP
S/N:SFG00002-UP
S/N:A9J00274-UP
S/N:DNM00382-UP
S/N:DP400104-UP
S/N:MGF00281-UP
S/N:B3798199-UP
S/N:PT700002-UP
S/N:WTA00116-UP
S/N:WTE00115-UP
S/N:WTB00192-UP
S/N:WTC00222-UP
S/N:TFB00740-UP
S/N:TFF01218-UP
S/N:TFH00161-UP
S/N:TFJ00193-UP
S/N:TFN00179-UP
S/N:TFK00905-UP
S/N:KDH00303-UP
S/N:RMA00002-UP
S/N:KEX00199-UP
S/N:23404008-UP
S/N:23305015-UP
S/N:23206218-UP
S/N:TWY00704-UP
S/N:TWZ00554-UP
S/N:DYC00728-UP
S/N:KJP01172-UP
S/N:P6C00556-UP
S/N:A8P00643-UP
S/N:JPR00568-UP
S/N:EDW00383-UP
S/N:KRS01079-UP
S/N:N8T00494-UP
S/N:F9A00262-UP
S/N:K1Y00544-UP
S/N:TWX00847-UP
S/N:HTZ00530-UP
S/N:SGT00267-UP
S/N:CR300113-UP
S/N:RAD00868-UP
S/N:KMR00506-UP
S/N:MEL00153-UP
S/N:WES00380-UP
S/N:CG800104-UP
S/N:TMY00333-UP
S/N:STE00112-UP
S/N:WRN00532-UP
S/N:HKA00455-UP
S/N:SSH00355-UP
S/N:FMC00544-UP
S/N:REX00423-UP
S/N:P7200124-UP
S/N:MB900130-UP
S/N:BMH00205-UP
S/N:CRM00314-UP
S/N:DPX00115-UP
S/N:FJH01887-UP
S/N:GNY00132-UP
S/N:JRJ00518-UP
S/N:KED00321-UP
S/N:HDW00211-UP
S/N:BZY02544-UP
S/N:GTJ00180-UP
S/N:TEG00226-UP
S/N:YCE00781-UP
S/N:YEP00543-UP
S/N:JEA00165-UP
S/N:RZA01057-UP
S/N:TMZ00440-UP
S/N:SSL00184-UP
S/N:DGE00363-UP
S/N:ETC00164-UP
S/N:FJB00200-UP
S/N:KCN00355-UP
S/N:KFX00693-UP
S/N:MPZ00829-UP
S/N:MZW00221-UP
S/N:RGH00208-UP
S/N:SPG00235-UP
S/N:TFG01136-UP
S/N:WHZ00147-UP