TM 5-3805-281-24-1
Tests
PROPEL MOTOR CROSSOVER RELIEF VALVE TEST AND ADJUSTMENT
SPECIFICATIONS
The purpose of propel crossover relief valves is to
50 5C (120 10F)
relieve high pressure spike caused by starting and
Hydraulic Oil Temperature
stopping the propel function and to relieve pressure
Engine Speed
1200 rpm approximate
spikes caused by external forces while propelling. The
Work Mode Selector Position
Dig Mode
valves are checked and adjusted to specification to
E Mode Switch Position
Off
protect components from damage.
HP Mode Switch Position
Off
Auto-Idle Switch Position
Off
1. Install the temperature probe on the hydraulic
34 815 980 kPa (348.1 9.8
tank-to-pump suction line. (See JT05800 Digital
Propel Crossover Relief Valve
bar) (5 050 140 psi)
Pressure
Thermometer Installation in this group.)
Per 1/4 Turn of Adjusting
2 940 kPa (29.4 bar) (427 psi)
Screw Approximate Change
2. Install a tachometer. (See JT05801 Clamp-On
Pressure
Electronic Tachometer Installation in this group.)
Propel Crossover Relief Valve
49 Nm (36 lb-ft)
Adjusting Screw-to-Cartridge
Nut Torque
31 870 980 kPa (318.7 9.8
System Relief Valve Pressure
bar) (4 620 140 psi)
ESSENTIAL TOOLS
TH108328 Adapter (2 used)
XPD34BTX (1/8 x 7/16-20 F 37) Male Quick Coupler
SERVICE EQUIPMENT AND TOOLS
JT05800 Digital Thermometer
9025
JT05801 Clamp-On Electronic Tachometer
25
88
JT07290 Laptop Computer
JT07274F Excavator Diagnostics Program Disk
JT07273 Cable
JT02156A Digital Pressure and Temperature Analyzer
JT02160 Transducer 70 000 kPa (700 bar) (10 000 psi)
70 000 kPa (700 bar) (10 000 psi) Gauge
32 mm Combination Wrench
19 mm Combination Wrench
90 mm (3-1/2 in.) OD Pin or Length of Round Bar Stock (2 used)
19 mm Combination Wrench
6 mm Hex Key Wrench
Continued on next page
CED,TX08227,3037
1923MAR981/5
