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| MIL-C-53057(ME)
APPENDIX
TEST METHOD NO. 24
HIGH SPEED
1. TEST COURSE:
The test course shall be a compacted surface of sufficient size
to allow continuous travel at wide open throttle in highest gear
range.
2. TEST APPARATUS:
a. Speed indicator.
b. Thermocouple and potentiometer or equivalent temperature
measuring device.
3. TEST PROCEDURE:
a. Block thermostat in the open position.
b. Install thermocouples in the hydraulic system reservoir at
the pump inlet, in the transmission sump, in the transfer
case sump, in the engine coolant outlet (if utilized), in the
torque converter outlet line adjacent to the torque converter
(if utilized) and engine oil gallery.
c. Record all temperatures, including ambient before starting
test.
d. Drive the unloaded crane over the test course for l hour at
wide open throttle in highest forward gear range. Stop the
crane and record all temperatures immediately, including
ambient and universal joint temperatures. Check for universal
joint temperature using temperature marker.
e. In not less than 5 minutes after stopping, repeat 3d above
three times, recording all temperatures immediately upon
stopping, including ambient and universal joint temperatures
each hour. Total operational time not less than 4 hours.
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