TM 5-3805-281-24-1
Tests
PROPEL SYSTEM TRACKING TEST
SPECIFICATIONS
Course Length
20 m (65 ft) plus 3--5 m (10--15
ft)
Track Sag
340--380 mm (13-3/8--15 in.)
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
Propel Speed Switch Position
Slow (Turtle) and Fast (Rabbit)
Mistrack Distance
200 mm (7-7/8 in.) or less at 20
m (65 ft)
SERVICE EQUIPMENT AND TOOLS
Tape Measure
JT05800 Digital Thermometer
Test is used to check the overall condition of the propel
system from the hydraulic pumps to the propel motors.
1. Lay out a course on a hard flat surface plus an
additional length at each end for acceleration and
9025
deceleration. Mark a straight line the length of course.
25
131
Course--Specification
Length................................................... 20 m (65 ft) plus 3--5 m (10--15
ft)
2. Adjust the track sag so both side are equal and within
specification before doing test. (See Adjust Track Sag
in Group 9020-20.)
Track--Specification
Sag ............................................................ 340--380 mm (13-3/8--15 in.)
3. Install the temperature probe on the hydraulic
tank-to-pump suction line. (See JT05800 Digital
Thermometer Installation in this group.)
4. Heat hydraulic oil to the specified temperature. (See
Hydraulic System Warm-Up Procedure in this group.)
Continued on next page
CED,TX08227,3146
1929MAY981/3
