559C and 579C Knuckleboom Loaders Caterpillar

Cycle Times - Test

Usage:

559C KAS

Specification

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Table 1
Machine Condition Requirements
Engine speed (RPM)	1820 ± 20
Hydraulic oil temperature (tank)	60.0° ± 2.8°C (140° ± 5°F)
Hydraulic oil temperature (delimber)	60.0° ± 2.8°C (140° ± 5°F)
Power mode setting	Level 3

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Table 2
Cycle Time Specifications 559C
Function	Specification	Actual
Grapple open (sec)	1.17 ± 0.1
Grapple close (sec)	1.5 ± 0.2
Main boom up (sec)	8.1 ± 0.8
Main boom down (sec)	4.9 ± 0.5
Stick in (sec)	4 ± 0.4
Stick out (sec)	4.4 ± 0.4
Swing left (sec)	5.5 ± 0.5
Swing right (sec)	5.5 ± 0.5
Grapple Rotate left (sec)	1.5 ± 0.3
Grapple rotate right (sec)	1.5 ± 0.3
Stabilizer down (sec)	7 ± 0.75
Stabilizer up (sec)	8.5 ± 0.75
Topping saw bar up (sec)	2
Topping saw bar down (sec)	2

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Table 3
Cycle Time Specifications 579C
Function	Specification	Actual
Grapple open (sec)	1.17 ± 0.1
Grapple close (sec)	1.5 ± 0.2
Main boom up (sec)	6.6 ± 0.6
Main boom down (sec)	6.4 ± 0.6
Stick in (sec)	3.9 ± 0.4
Stick out (sec)	4.3 ± 0.4
Swing counter clock-wise (sec)	6.5 ± 0.75
Swing clock-wise (sec))	6.5 ± 0.75
Grapple Rotate counter clock-wise(sec)	1.5 ± 0.3
Grapple rotate clock-wise (sec)	1.5 ± 0.3
Stabilizer down (sec)	5.5 ± 0.75
Stabilizer up (sec)	7.5 ± 0.75
Topping saw bar up (sec)	2
Topping saw bar down (sec)	2

Introduction

The series of cycle time test that follow will be used to verify proper function of the hydraulic system. If any of these tests do not meet the specifications listed, further testing of the hydraulics for that function will be required.

Test Preparation

Park the machine on a level surface.

Test Procedure

Grapple Cycle Time Test

With the grapple in the closed position, press and hold the grapple open button. Record the time.

With grapple in the open position, actuate the grapple close button. Record the time.

Main Boom Cycle Time Test

With the stick extended and the boom retracted, actuate the boom to the full extend position. Record the time.

With the stick extended and the boom extended, actuate the boom to the full retract position. Record the time.

Stick Cycle Time Test

With the main boom in a 45° position, and the stick retracted, actuate the stick to the full extended position. Record the time.

With the main boom in a 45° position, and the stick extended, actuate the stick to the full retracted position. Record the time.

Swing Cycle Time Test

Articulate the machine to a counter clock-wise rotation. Record the time for one rotation.

Articulate the machine to a clock-wise rotation. Record the time for one rotation.

Grapple Rotate Cycle Time Test

Actuate the grapple rotate in the counter clock-wise direction. Record the time for one rotation

Actuate the grapple rotate in the clock-wise direction. Record the time for one rotation

Stabilizer Cycle Time Test

With the stabilizer in the stored position, extend the stabilizer to the full lift position. Record the time. Repeat this test for all four stabilizers.

With the stabilizer in the full lift position, retract the stabilizer to the stored position. Record the time. Repeat this test for all four stabilizers.