INLAY 9W4392 - Caterpillar

Agricultural Tractor: MT735 MTS (S/N: AKN1-UP) MT745 MTS (S/N: ALA1-UP) MT755 (S/N: ALM1-UP) MT765 MTS (S/N: AMS1-UP)Industrial Engine: 3126B (S/N: BEJ1-UP; DCS1-UP) C-9 (S/N: CLJ1-UP)On-Highway Engines: 3126B (S/N: 8YL1-UP; 7AS1-UP; BES1-UP) 3126E (S/N: CKM1-UP; HEP1-UP; 9SZ1-UP)Excavator: 322C L (S/N: BKJ1-UP) 325C L (S/N: CRB1-UP; BFE1-UP) 325C (S/N: BKH1-UP) 325C LN (S/N: CSJ1-UP) 325C L (S/N: BMM1-UP; BKT1-UP) 325C (S/N: BKW1-UP) 325C L (S/N: BLX1-UP) 330C L (S/N: CYA1-UP; HAA1-UP) 330C (S/N: JAB1-UP; GAG1-UP; BTM1-UP) 330C L (S/N: CAP1-UP; DKY1-UP) 330C LN (S/N: CGZ1-UP)Integrated Toolcarrier: IT28G (S/N: 8CR1-UP) IT38G Series II CUSTOM (S/N: CSX1-UP) IT38G (S/N: 7BS1-UP)Motor Grader: 12H (S/N: AMZ1-UP)Track-Type Loader: 953C (S/N: BBX1-UP)Track-Type Tractor: D5N PS LGP FTC (S/N: AKD1-UP) D6R Series II DS LGP (S/N: BNC1-UP; ADE1-UP) D6R Series II FTC (S/N: BLE1-UP) D6R Series II DS XW (S/N: DAE1-UP) D6R Series II STD FTC (S/N: BMJ1-UP; AGM1-UP) D6R Series II DS XW (S/N: AEP1-UP) D6R Series II DS STD (S/N: BLT1-UP) D6R Series II DS XL (S/N: AAX1-UP; BMY1-UP) D6R (S/N: DMP1-UP)Wheel Loader: 928G (S/N: 6XR1-UP) 938G (S/N: 4YS1-UP; 6WS1-UP) 950G Series II (S/N: AYB1-UP; AYL1-UP; AXX1-UP) 962G Series II (S/N: BAB1-UP; BAD1-UP; AYE1-UP; AXY1-UP)Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
Loose cables on the heater side or the Battery+ side of the Air Inlet Heater Relay may cause the Air Inlet Heater Relay to fail. Symptoms of a relay failure may include dead batteries or damage to the wiring harnesses.Solution
When installing an Air Inlet Heater Relay, perform the following procedure to ensure proper cable retention. Be sure to use the hardware that is specified in the procedure and to follow the torque specifications that are listed. The changes that are listed in the following procedure are being implemented in production.Before Assembly
Disconnect the power to the battery
Make sure that the wire assembly lugs are clean of corrosion and paint.
Table 1
Parts List    
Quantity     Part Number    
2     1H-3338 Lockwasher (Star Washer)    
2     012-0380 Lockwasher (Split Washer)    
2     5C-2890 Nut    
1     175-2301 Magnetic Switch    
1     148-0757 Magnetic Switch Gp    
Required Tools    
Quantity     Part Number    
1     4C-6936 Torque Wrench