TM 5-3805-262-34
3-13. FLOWMETER TESTS (CONT)
TEST NO. 2 - STEERING CIRCUIT AND RELIEF VALVE (SHEET 4 OF 5)
o.
p.
q.
r.
s.
t.
u.
v.
w.
x.
Continue to operate engine at full throttle. Turn steering wheel to right
and close flowmeter PRESSURE VALVE control. Record flowmeter PRESSURE gage
reading. This reading is the pressure at which relief valve is completely
open.
Open flowmeter PRESSURE VALVE control completely and turn off engine.
If reading recorded in step n above is not between 2400 to 2600 psi, flow
control valve is defective. Remove, replace, and repair flow control valve
(page 3-566) (relief valve is defective and must be replaced).
If reading recorded in step o above is less than 2100 psi, flow control
valve is defective. Remove, replace, and repair flow control valve (page
3-566) (relief valve is defective and must be replaced).
Start and operate engine at 2000 rpm.
Before performing following step, warn personnel to stay away from sides
of loader between front and rear chassis. Failure to do so will cause
death or serious injury to those personnel due to chassis pivoting and
crushing them. If personnel are injured, obtain medical assistance
immediately.
Turn steering wheel to right and close flowmeter PRESSURE VALVE control
until flowmeter PRESSURE gage indicates 2100 psi. If necessary, adjust
engine speed to 2000 rpm by further depressing accelerator pedal. Record
flowmeter FLOW gage reading.
Turn steering wheel completely to left until loader stops turning.
Hold steering wheel completely to left and adjust flowmeter PRESSURE VALVE
control until flowmeter PRESSURE gage indicates 2100 psi. If necessary,
adjust engine speed to 2000 rpm by further depressing accelerator pedal.
Record flowmeter FLOW gage reading.
Open flowmeter PRESSURE VALVE control
If readings recorded in steps t and v
readings obtained at same pressure in
is good.
completely and turn off engine.
above are approximately the same as
test no. 1 steps p and r, the circuit
3-508
