TM 5-3805-281-24-1
Tests
SWING MOTOR LEAKAGE TEST
SPECIFICATIONS
50 5C (120 10F)
Hydraulic Oil Temperature
Engine
Fast Idle
Work Mode Selector Position
Dig Mode
E Mode Switch Position
Off
HP Mode Switch Position
Off
Auto-Idle Switch Position
Off
New Swing Motor While Swinging
2 L/min (0.53 gpm)
Leakage
New Swing Motor While Stalled
31 L/min (8.2 gpm)
Leakage
ESSENTIAL TOOLS
JT03023 (9/16-18 F 37) (Parker No. X06CP-6) Cap
SERVICE EQUIPMENT AND TOOLS
JT05800 Digital Thermometer
Calibrated Container
Purpose of test is to check the efficiency of swing motor.
Leakage can occur between the cylinder block and valve
plate, and the slippers and swash plate when parts are
worn or damaged. Motor must be checked in more than
one position in order to check all pistons and the
9025
25
circumference of valve plate and cylinder block.
136
1. Install the temperature probe on the hydraulic
tank-to-pump suction line. (See JT05800 Digital
Thermometer Installation in this group.)
2. Heat hydraulic oil to the specified temperature. (See
Hydraulic System Warm-Up Procedure in this group.)
Hydraulic Oil--Specification
Temperature ........................................................... 50 5C (120 10F)
3. Stop the engine.
Continued on next page
CED,TX08227,3148
1930MAY981/4
