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PAGE 30 — AR13D RIDE-ON TANDEM DRUM ROLLER — OPERATION & PARTS MANUAL — REV. #2 (09/15/11)
Forward/Reverse Hydraulic Pressure Test
Park the machine on a solid flat surface and stop the engine. Set
the parking brake and
block the front drum securely
.
1. Check hydraulic oil level by viewing the hydraulic oil sight
glass. The hydraulic oil level must be below the top and
above the bottom of the sight glass. DO NOT OVERFILL!
2. Adjust engine RPM (3,500 +/- 50 RPM)
3. Let engine run for 5 minutes, this will bring the hydraulic oil
operating temperature to a minimum of 135
°
farenheit.
4. Check and repair all hydraulic leaks.
5. On the manifold block install a 5,000 psi pressure gauge
(Figure 34) to the
forward
pressure quick disconnect
test port 2
6. Run engine at full throttle.
7. Move the
travel lever
to the forward position. MAKE SURE
FRONT AND REAR DRUMS DO NOT SPIN.
8. Read the pressure gauge. The
relief pressure
(roller
drums blocked) will read 2,900 ± 145 psi. Under
normal
operating
conditions this pressure will read 400-600 psi.
9. Return the travel lever to the
neutral
position and
stop
the
engine.
10. Install the pressure gauge into the reverse quick disconnect
port 3
and repeat the above procedures. The relief pressure
reading for the reverse test port 3 will be the same (2,900
psi). Again normal operation pressure for the reverse port
will be 400-600 psi.
Vibration Circuit Pressure Test
Place the front drum on soil, gravel, or a heavy rubber mat.
DO NOT ACTIVATE VIBRATION FEATURE ON CONCRETE
OR HARD SURFACE!
1. On the manifold block install a 5,000 psi pressure gauge to
quick disconnect test port 1.
2. Start the engine and run at full throttle.
3. To start the vibration,
press
the pushbutton switch
(vibration control) located on top of the travel lever. Under
normal operating conditions this pressure will range
between 800-1,000 psi.
Steering Pressure Test
1. On the manifold block, install a 5,000 psi pressure gauge
into quick disconnect test
port 1
(Figure 34).
2. Start the engine and run at full throttle.
3. Turn the steering wheel to the
left or right
(maximum) and
hold. Read the steering relief pressure. The
relief pressure
reading for the steering test port 1 will be 700 psi. Again,
under normal operating conditions, pressure for the
steering port will be between 200-400 psi.
If maximum pressure cannot be reached, plug the steering
cylinder pressure hoses and re-test. If pressure is correct the
steering cylinder is leaking. DO NOT ACTIVATE THE
VIBRATION FUNCTION WHILE PERFORMING THIS TEST !
Figure 34. Manifold Test Ports
Vibration relief pressure is hard to read
accurately using this test. It may be necessary to
disconnect the pressure line to the vibration drive
motor. Plug this line and re-test, pressure will be
exact relief pressure. DO NOT perform this test
for a long period of time — damage could occur.
TEST PORTS
1. Vibration and Steering
2. Forward
3. Reverse
AR13D RIDE-ON ROLLER — MAINTENANCE