TM 5-3805-281-24-1
Tests
CYCLE TIME TEST
SPECIFICATIONS
50 5C (120 10F)
Hydraulic Oil Temperature
Engine Speed
Fast Idle
Work Mode Selector Position
Dig Mode
E Mode Switch Position
Off
HP Mode Switch Position
Off
Auto-Idle Switch Position
Off
3.1 0.3 sec
Boom Up Cycle Time
2.8 0.3 sec
Boom Down Cycle Time
Boom Position
3.9 0.3 sec
Arm In Cycle Time
3.3 0.3 sec
Arm Out Cycle Time
4.6 0.3 sec
Bucket Load Cycle Time
2.7 0.3 sec
Bucket Dump Cycle Time
16.5 1.0 sec
Swing For Three Revolutions
From a Running Start--Check
Left and Right Cycle Time
13.1 1.0 sec
Fast Speed Propel 20 m (65 ft)
From a Running Start--Check
Forward and Reverse Cycle Time
20.0 2.0 sec
Slow Speed Propel 20 m (65 ft)
From a Running Start--Check
Forward and Reverse Cycle Time
33.0 2.0 sec
Arm, Bucket, Swing and Propel Position
Slow Speed Propel With Track
Raised Three Revolutions From a
9025
Running Start--Check Forward
25
and Reverse Cycle Time
59
SERVICE EQUIPMENT AND TOOLS
JT05800 Digital Thermometer
Stop Watch
Test is used as an indication of overall engine and
hydraulic system performance. A slow cycle time is an
indication of a leaky or malfunctioning hydraulic system
component or a weak engine.
Propel 3-Revolution Position
1. Adjust track sag to specifications. (See procedure in
Group 9020-20.)
2. Install the temperature probe on the hydraulic
tank-to-pump suction line. (See JT05800 Digital
Thermometer Installation in this group.)
Continued on next page
CED,TX08227,3030 1918MAR981/4
