ADAPTER 8M4858 - Caterpillar

Table 2
M320F "Engine Performance - Test (Engine Speed)"
Conditions Specifications
Engine "AESC" Switch Position "Engine Speed Dial" Position New Rebuild Service Limit Actual
No load OFF 10 1659 20 rpm
Load OFF 10 1550 rpm
No load OFF 1 1136 20 rpm
No load ON 1 800 rpm
Table 3
M322F "Engine Performance - Test (Engine Speed)"
Conditions Specifications
Engine "AESC" Switch Position "Engine Speed Dial" Position New Rebuild Service Limit Actual
No load OFF 10 1799 20 rpm
Load OFF 10 1700 rpm
No load OFF 1 1106 20 rpm
No load ON 1 800 rpm Note: A New specification is the performance that can be expected for a new machine. A "Rebuild" specification is the performance that can be expected after rebuilding the components of a system. Performance beyond the Service Limit is an indication of these problems: improper maintenance or adjustment, component wear, and failure.Introduction
This test must be performed prior to performing any of the operational checks.Required Tools
Table 4
Required Tools
Tool Item Qty Part No Description
E E1 Cat® Electronic Technician (ET)
E2 1 317-7484 Communication Adapter Gp
E3 1 457-6114 Cable As Machine Preparation
Clear all personnel from the machine and from the area around the machine.
Start the engine.
Illustration 1 g02449876
Engine speed dial
Set the engine speed dial at "10".
Lower the left console.
Position the machine on level ground. Check the visibility and adjust the mirrors for the best vision close to the machine.
Fully depress the service brake pedal until the service brake pedal locks mechanically.
Increase the hydraulic oil temperature to 46° to 60° C (115° to 140° F).
Lower the stabilizers and the blade tip.
Fully extend the bucket cylinder and place the bucket on the ground.
Stop the engine.
Release the pressure in the hydraulic system.Note: Refer to Testing and Adjusting, "System Pressure - Release".
Raise the left console.
Illustration 2 g03722485
Service connector on the right side of cab behind the seat
Connect tooling (E) to the service connector.Test Procedure
Start the engine.
Set the engine speed dial at the position for each of the desired specifications listed in Tables 1, 2, and 3.
Read the engine speed display (rpm).