TM 5-3805-248-23-2
STEERING FLOW METER TEE TEST PROCEDURES - CONTINUED
0306 00
PREPARATION FOR TEST - CONTINUED
4.
Return ejector control lever to rear position.
5.
Install tachometer from flow meter test group.
WARNING
The manual load valve on the flow meter must be fully opened before starting the engine. Failure to follow
this procedure may cause injury. If you are injured, seek medical attention immediately.
6.
Open the manual load valve on flow meter fully.
7.
Start engine and run at 1,900 RPM. Turn the steering wheel right and hold.
8.
Slowly adjust the manual load valve on the flow meter to a pressure of 1,000 psi (6,895 kPa).
9.
Check the oil temperature. When the oil temperature reaches 100F (38C), adjust the manual load valve on the flow
meter to a pressure of 1,500 psi (10,342 kPa).
10.
Move all hydraulic control levers several times.
11.
Check the oil temperature. When the oil temperature reaches 160F (71C), move the cylinders through their cycles.
Temperature throughout the system should be 150F (66C).
SYSTEM TEST
Maximum Pressure Relief Valve Setting.
1.
NOTE
Before recording test data, make sure conditions in the hydraulic system are constant. Refer to Table 1,
Steering Flow Meter Tee Test in this work package.
a.
Open manual load valve on the flow meter fully.
b.
Start engine and run at 1,900 RPM. Turn the steering wheel right and hold.
c.
Slowly close the manual load valve until the oil flow through the flow meter stops (zero gpm).
d.
Record pressure. Refer to Table 1. Maximum pressure relief valve setting is between 2,200 and 2,300 psi (15,168
and 15,858 kPa).
System Oil Temperature (Start).
2.
a.
Open the manual load valve on the flow meter fully.
b.
Start engine. Turn the steering wheel right and hold.
c.
Record oil temperature. Refer to Table 1. System oil temperature should be 145-155F (63-68C).
System Base Flow Rate.
3.
a.
Open the manual load valve on the flow meter fully.
b.
Start engine and run at 1,900 RPM. Turn the steering wheel right and hold.
NOTE
Before recording test data, make sure the system pressure is at least 100 psi (689 kPa).
c.
Record flow rate. Refer to Table 1. Correct system base flow rate is 60 gpm.
0306 00-3
