Engine Performance - Test - Engine Speed
Show/hide table
Required Tools     | ||
---|---|---|
Part Number     | Description     | Qty     |
9U-7400     | Multitach Tool Group     | 1     |
- Position the machine on level ground.
- Stop the engine.
- Install 9U-7400 Multitach Tool Group on the engine.
- Start the engine.
- Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
- Read the engine speed display (rpm) on the multitach. Refer to Table 2 for the specifications for engine speed at the desired engine operation.
Show/hide table
Item     | Specifications     | |||
---|---|---|---|---|
New | Rebuild     | Service Limit     | ||
No load high idle (1)     | 1880 ± 50 rpm (2)     | 1680 to 1930 rpm (1)     | ||
1980 ± 50 rpm (3) | 1780 to 2030 rpm (3)     | |||
No load low idle     | 950 ± 50 rpm     | 950 ± 100 rpm     | ||
Maximum speed with load (4)     | 1720 rpm (5)     | 1670 rpm (5)     | 1620 rpm (5)     | |
No load speed (6)     | 1300 ± 50 rpm     | 1300 ± 100 rpm     |
Show/hide table
( 1 ) | AEC switch in the OFF position |
( 2 ) | Three seconds after the engine speed dial was placed at position "10" |
( 3 ) | Engine rpm within three seconds after the engine speed dial was placed at position "10" |
( 4 ) | Pressure is relieved from both pumps (stall condition). |
( 5 ) | Minimum rpm |
( 6 ) | AEC switch in the ON position |
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.
Caterpillar Information System:
VHS10, VHS30, VHS40, VHS50, VHS60 and VHS70 Work Tools Cutters - Inspect/Replace
330C Excavator Hydraulic System Main Hydraulic Pump Air - Purge
330C Excavator Hydraulic System Hydraulic System Pressure - Release
302.5C Mini Hydraulic Excavator Machine System Specifications Blade Lift Cylinder
C9 Engines for Caterpillar Built Machines Cooling System - Test
302.5C Mini Hydraulic Excavator Machine System Specifications Swing Boom Cylinder
C9 Engines for Caterpillar Built Machines Lubrication System
C15 and C18 Engines for Caterpillar Built Machines CID 1421 FMI 09 Unable to communicate with Rear Engine ECM
C9 Engines for Caterpillar Built Machines General Information
M325C Excavator Engine Supplement Oil Pan - Remove and Install - Engine in Chassis
C11 and C13 Engines Engine Mounting
345C Material Handler Hydraulic System Travel Hydraulic System
345B Series II Excavator Additional Messages
330C Excavator Hydraulic System Travel on Level Ground - Test - Optional Test
365C Front Shovel Hydraulic System Cylinder Drift - Check - Loaded Bucket
330C Excavator Hydraulic System Travel on Level Ground - Test
345C Material Handler Hydraulic System Return Hydraulic System
330C Excavator Hydraulic System Machine Drift on a Slope - Check
330C Excavator Hydraulic System Swing Speed and Overswing on Level Ground - Check
330C Excavator Hydraulic System Swing Speed and Swing Drift on a Slope - Check
330C Excavator Hydraulic System Relief Valve (Pilot) - Test and Adjust
330C Excavator Hydraulic System Accumulator (Pilot) - Test and Charge
330C Excavator Hydraulic System Relief Valve (Main) - Test and Adjust
330C Excavator Hydraulic System Swing Motor - Test - Measurement of Case Drain Oil