TM 5-3805-260-24
NOTE: It is important that the tee block and blocking
plate assemblies be installed in the exact position shown
to get the correct test results. Remove all blocking
plates not for the specific test being made.
Test 42: System Oil Temperature
Tee location: The plug on the supply line elbow
at the scraper control valve, or at the pump.
Blocking location: None.
1. Open the manual load valve fully.
2. Start the diesel engine. Run the engine at any rpm
with the system pressure at 0 to 100 psi.
3. Move the ejector control lever to FORWARD (OPEN)
position.
4. Write down the oil temperature.
Test 43: Ejector FORWARD (OPEN) Flow Rate
(Ejector Cylinder Blocked)
Tee location: The plug on the supply line elbow
at the scraper control valve, or at the pump.
Blocking locations:
At
the
manifold,
between
the
ejector
cylinder head and the manifold.
1. Open the manual load valve fully.
2. Move the ejector control lever to FORWARD (OPEN)
position.
3. Slowly close the load valve to get 1000 psi pressure.
4. Write down the flow rate (gpm).
Test 44:
Ejector FORWARD Flow Rate (Floor
Cylinder Check Valve Blocked)
Tee location: The plug on the supply line elbow
at the scraper control valve, or at the pump.
Blocking location: At the inlet to the floor cylinder
check valve, between the valve and the line
from the head end of the floor cylinder.
1. Open the manual load valve fully.
2. Move the ejector control valve to FORWARD position.
3. Slowly close the load valve to get 1000 psi pressure.
4. Write down the flow rate (gpm).
Tests 45 and 46:
Bowl RAISE and Bowl LOWER
Flow Rates (Right Bowl Cylinder
and Balance Line Blocked)
These two tests are similar. Do the tests as
follows:
Tee location: The plug on the supply line elbow
at the scraper control valve, or at the pump.
Blocking locations:
At the inlet to the head end of the right bowl
cylinder AND at the outlet of the vent line to
the right bowl cylinder.
1. Open the manual load valve fully, then start the
engine.
2. Move the bowl control lever to RAISE posi- tion.
3. Run the engine at test rpm.
4. Slowly close the manual load valve to get 1000 psi
pressure.
5. Write down the flow rate (gpm).
6. Do this procedure again for bowl LOWER.
Test 52: System Oil Temperature
1. Open the manual load valve fully.
2. Start the diesel engine. Run the engine at any rpm
with the system pressure at 0 to 100 psi.
3. Move the ejector control lever to FORWARD, SLOW
position.
4. Write down the oil temperature.
Find the leakage rate of the cylinders, valves,
and hydraulic motor. Use the test information from the
Systems Tests, Pump Tests, Blocked Circuit Tests, and
Blocked Component Tests.
Example: Find the leakage of the right bowl
cylinder in the bowl RAISE position.
Test 6: Flow rate of the bowl circuit.
4-53
