312F and 313F Excavator Machine Systems Engine Performance - Test

Engine Performance - Test - Engine Speed

312F and 313F Excavator Machine Systems [M0065826]

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BASIC ENGINE

312F and 313F Excavator Machine Systems Engine Performance - Test - Engine Speed

1.1. Specification

2.1. Introduction

3.1. Required Tools

4.1. Machine Preparation

5.1. Test Procedure

6.2. Travel Procedure

Specification

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Table 1
"Engine Performance - Test (Engine Speed)"
Conditions				Specifications
Engine	"AEC" Switch Position	"Engine Speed Dial" Position	Time (sec)	New	Service Limit	Actual
No load	OFF	10	0 to 5	1500 ± 50 rpm
	OFF	10	> 5	1400 ± 50 rpm
	ON	10	> 5	1100 ± 50 rpm
	OFF	1	> 5	1000 ± 50 rpm
	One touch low idle		> 0	1100 ± 50 rpm
Load⁽¹⁾	OFF	10	> 3 to 5	1500 ± 50 rpm	≥ 1450 rpm
Travel⁽²⁾	OFF	10	0 to 5	1600 ± 50 rpm	≥ 1550 rpm
Travel⁽³⁾	OFF	10	> 10	2000 ± 50 rpm	≥ 1950 rpm

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⁽¹⁾	Two pump main relief (Boom UP).
⁽²⁾	One track blocked
⁽³⁾	Both tracks blocked

Note: A New specification is the performance that can be expected for a new machine. Performance beyond the Service Limit is an indication of these problems: improper maintenance or adjustment, component wear, and failure.

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Table 2
Corresponding Engine RPM and Torque Output for Each Engine Speed Dial Position (No Load Condition)
Engine Speed Dial Position	High Hydraulic Power Mode		Economy Mode
Engine Speed Dial Position	Engine RPM	Torque Output (%)	Engine RPM	Torque Output (%)
1	1000	20.0	1000	20.0
2	1100	48.0	1100	48.0
3	1200	62.0	1200	62.0
4	1250	75.0	1250	72.0
5	1280	84.0	1280	72.0
6	1320	84.0	1320	72.0
7	1350	84.0	1350	77.0
8	1400	84.0	1380	77.0
9	1450	90.0	1400	77.0
10	1500	100.0	1450	80.1

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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Illustration 2	g03261789

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Table 3
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
D		2	418-3610	Track Block

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.
Place track block (D) in the left travel sprocket to block left forward travel. Place track block (D) in the right travel sprocket to block right forward travel.

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.

Travel Procedure

Use the following procedure to check the desired engine speed for travel operation.

Start the engine.
Place the hydraulic activation control lever in the UNLOCK position.
Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
Place the machine controls at the following settings: engine speed dial 10 and AEC switch OFF.
Place the travel speed control switch in HIGH position.
Move either travel lever to the full forward travel position and read the engine speed display (rpm) on the multi-tool. The engine speed should be 1600 ± 50 rpm.
Return the travel lever to the NEUTRAL position.
Move both travel levers to the full forward travel position and hold for 10 seconds. Read the engine speed display (rpm) on the multi-tool. The engine speed should slowly increase to 2000 ± 50 rpm.
Return the travel levers to the NEUTRAL position.