314E CR and 314E SR Excavator Machine Systems Caterpillar

Engine Performance - Test - Engine Speed

Usage:

Specification

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Table 1
314E CR/SR (LHP)
"Engine Performance - Test (Engine Speed)"
Conditions					Specifications (HP mode)
Engine	"AEC" Switch Position	"Engine Speed Dial" Position	Time (sec)		New	Rebuild	Service Limit	Actual
No load	OFF	10	0 to 5		1600 ± 50 rpm⁽¹⁾		1450 to 1700 rpm⁽¹⁾
	OFF	10	> 5		1600 ± 50 rpm		1450 to 1700 rpm
	ON	10	> 5		1000 ± 50 rpm		1000 ± 100 rpm
	OFF	1	> 5		900 ± 50 rpm		900 ± 100 rpm
	One touch low idle		> 0		1000 ± 50 rpm		1000 ± 100 rpm
Load⁽²⁾	OFF	10	> 3 to 5	Implement	1700 ± 50 rpm		≥ 1600 rpm
Load⁽²⁾	OFF	10	> 3 to 5	Travel	1800 ± 50 rpm		≥ 1700 rpm

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⁽¹⁾	ODEP "ON"
⁽²⁾	Two pump main relief (Boom UP operation).

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

The following test is used to measure engine speed at the flywheel housing.

Required Tools

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Illustration 1	g02535237
Tooling (C)

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Table 2
Tooling	Item	QTY	Part Number	Description
C			348-5430	Multi-Tool Gp
	C1	1	285-0908	Multi-Tool
	C2	1	6V-2198	Cable As
	C3	1	9U-5140	Photo Pickup
	C4	1	6V-3137	Base
	C5	1	1U-6605	Reflective Tape
	C6	1	6V-3138	Extension

Reference: Refer to Tool Operating Manual, NEHS1087 for operating instructions for the 348-5430 Multi-Tool Gp.

Note: Use Software License Card, NETG5049 with part number 348-5430 Multi-Tool Gp.

Machine Preparation

Position the machine on level ground.
Stop the engine.
Install tooling (C) on the engine.

Test Procedure

Start the engine.
Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
Read the engine speed display (rpm) on the multi-tool. Refer to Table 1 for the specifications for engine speed at the desired engine operation.