ROCKER ARM AS 2785111 - Caterpillar

Table 1
Tools Needed
Part Number Part Name Quantity
225-8266 Ammeter Tool Gp 1
237-5130
or
146-4080 Digital Multimeter Gp
or
Digital Multimeter Gp 1 225-8266 Ammeter Tool Gp
Illustration 1 g02231196
225-8266 Ammeter Tool Gp
The 225-8266 Ammeter Tool Gp is portable. This ammeter is a self-contained instrument that measures electrical currents without breaking the circuit and without disturbing the conductor insulation. The ammeter contains a digital display that is used to monitor current directly within a range between 1 A and 1200 A. In order to view current readings of less than 1 A use the multimeter display. In order to read the multimeter display connect a 6V-6014 Cable between the digital multimeter and the ammeter. The ammeter then sends the current measurement to the multimeter display.A lever opens the ammeter jaws over a conductor. The conductor diameter cannot be larger than 19 mm (0.75 inch).The spring loaded jaws close around the conductor for measuring the current. A trigger switch controls the ammeter. The trigger switch can be locked into the ON position or into the OFF position.After the trigger is turned to the OFF position, the reading appears in the digital display for 5 seconds. This meter accurately measures currents in areas with a limited access. For example, these areas include areas that are beyond the sight of the operator. For DC operation, the ammeter contains a zero control. Batteries inside the handle supply the power.Note: Refer to the user manual for more information about using the 225-8266 Ammeter Tool Gp. 237-5130 Digital Multimeter Gp or 146-4080 Digital Multimeter Gp
Illustration 2 g02231214
237-5130 Digital Multimeter Gp or 146-4080 Digital Multimeter Gp
The 237-5130 Digital Multimeter Gp or the 146-4080 Digital Multimeter Gp is a portable, hand-held service tool with a digital display. This multimeter is built with extra protection against damage in field applications. The multimeter is equipped with 7 functions and 29 ranges. The 237-5130 Digital Multimeter Gp or the 146-4080 Digital Multimeter Gp has an instant ohms indicator. This indicator permits checking continuity for a fast inspection of the circuits. The multimeter can also be used for troubleshooting capacitors that have small values.Note: Refer to the manual that is provided by the supplier for more information on the use of the 237-5130 Digital Multimeter Gp. Refer to Operation Manual, NEHS0678 for complete information for the use of the 146-4080 Digital Multimeter Gp.Charging System
To check for correct output of the alternator, see the Specifications module. Refer to Special Instruction, REHS0354, "Charging System Troubleshooting". If the part number for the alternator to be tested is not listed in the Special Instruction, refer to the appropriate Specifications manual for the information needed to test the alternator.Before the start of on-engine testing, the charging system and the battery must be checked according to the following steps.
The battery must be at least 75 percent (1.225 Sp Gr) of the full charge. The battery must be held tightly in place. The battery holder must not put too much stress on the battery.
Cables