TM 5-3805-260-24
NOTE: Install the adapter as rapidly as possible to keep
the oil loss at a minimum.
4. Connect the supply line from the flow meter to the
supply line adapter.
WARNING: Do not install the adapter for the
supply line for the pump or the return line
assembly with the engine ON (running). Injury
to personnel can be the result.
PREPARATION OF SYSTEM FOR TEST
1.
Open
the
manual
load
valve
fully
(turn
counterclockwise).
2. Start the diesel engine.
3. Move the elevator control lever to the FORWARD
SLOW position.
4. With the engine at 2000 rpm, slowly turn the manual
load valve clockwise until the pressure goes up to
1000 psi.
5. Look at the oil temperature gauge.
6. When the oil temperature is 100° F, turn the manual
load valve clockwise until the pressure is 1500 psi.
7. When the oil temperature is 160° F, run the elevator
FORWARD and REVERSE, SLOW and FAST.
8. Run the elevator as long as needed to get the desired
oil temperatures of 150° F all through the system.
9. Put a chain around the elevator so it will not move.
SCRAPER ELEVATOR SYSTEM TEST (CHART B)
Write Down the Basic Test Data
NOTE: Conditions in the hydraulic system must be
constant before you write down the test data. The
control levers must be held in the exact position desired.
Best results are found when oil temperature is 150 5
F.
Test 10: Maximum Pressure Relief Valve Setting
1. Open the manual load valve fully.
2. Move the elevator control lever to FORWARD SLOW
position.
3. With the engine throttle at test rpm, slowly close the
manual load valve until oil flow through the flow
meter stops (0 gpm).
NOTE: The test rpm is given on the Procedure Data
Sheet, CHART B (Page 4-39).
4. Write down the pressure and engine rpm.
5. The setting for the relief valve for maximum pressure
must be according to the Service Manual.
CAUTION: When the pressures are higher than 1000
psi, slowly open manual load valve then release the
control lever. This will prevent possible damage to the
pressure gauge.
Test 11: System Oil Temperature
1. Open the manual load valve fully.
2. Move the ejector control lever to FORWARD SLOW
position.
3. Write down the oil temperature. Oil temperature must
be 150 5 F.
Tests 12, 13 and 14: System Base Flow Rate
These three tests are similar. Each test is done
as follows:
1. Move the control levers to the respective OPERATE
position.
2. Get the engine to test rpm.
3. Make an adjustment to the manual load valve to get a
pressure of approximately 100 psi.
4. Keep the system constant with these conditions.
5. Write down the flow rate (gpm) for each test.
Tests 15, 16 and 17: Leakage Rates
These three tests are similar. Each test is done as
follows:
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