STEP AS 3873441 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Specifications
Table 1
Fan Speed Calibration Speed
Model Minimum Speed Maximum Speed
926
930 700 50 rpm 1500 25 rpm
938 700 50 rpm 1550 25 rpm Required Tools
Table 2
Required Tools
Part Number Description Quantity
1U-6605 Reflective Tape 1
9U-7400 Multitach Tool Group 1
JEBD3003 Caterpillar Electronic Technician (ET) 1
317-7484 Communication Adapter Gp 1 Preparation for Calibration
Move the machine to a smooth, horizontal location. Move the machine away from other operating machines and away from personnel. Place the transmission direction and speed control lever in the NEUTRAL position. Stop the engine.
Engage the parking brake. Lower the work tool to the ground. Put blocks in front of the wheels and behind the wheels.
Inspect the hoses for the fan drive for damage. Inspect all of the connectors for the fan drive for damage. Inspect all of the components for the fan drive for damage.
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Location of the reflective tape
Note: If there is already a piece of reflective tape on the fan blade, then continue from step 7.
Remove grill assembly.
Attach 1U-6605 Reflective Tape (1) to the fan.
Install the grill assembly.
Install the 9U-7400 Multitach Tool Group on the grill assembly.
Start the engine and run the engine at low idle. Note: In order to ensure proper operation of the cooling system, the doors for the engine enclosure should be closed while the test procedures are conducted.
The software program that will be used for this test procedure is the Caterpillar Electronic Technician (ET). The Caterpillar Electronic Technician is a software program that can be used on an IBM-compatible personal computer. Refer to the Service Manual, JEBD3003 for the requirements in order to install ET.
Open the software program (ET) and check for active diagnostic codes. If there is an active diagnostic code, the calibration procedure will be stopped until the condition that caused the diagnostic code is corrected.
Once any active diagnostic codes are corrected, select the engine ECM from the available ECM list.
Follow the prompts on the display in order to complete the procedure. Note: Record fan speeds during testing and compare to values in the specification table. Refer to Table 1.
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