Operator's Manual

4
Bur 7-50731 Issued 8-99 Printed in U.S.A
P75 HOSE CONNECTIONS FOR
TRENCHER LIFT CYLINDER TO
STEERING VALVE
NOTE: The steering valve is located behind the
console.
See Figure 9 for steps 1 through 4.
1. Replace the 45 degree elbow located in the front
of the steering valve (A) with the 90 degree elbow
(39) and an orifice (40) as shown. The slot in the
orifice (40) must be away from the steering valve
(A).
2. Replace the straight connector located in the
bottom of the steering valve (A) with the 45
degree elbow (38) and the other orifice (40) as
shown. The slot in the orifice (40) must be away
from the steering valve (A).
3. Replace the fitting in the closed end of the
trencher lift cylinder (B) with the other elbow (39).
4. Replace the hoses that run between the steering
valve (A) and the trencher lift cylinder (B) with the
new hoses (36 and 37) as shown.
DECAL INSTALLATION
1. See Figure 10. Install the decals (15, 16, and 41
or 51) to the console (A) in locations shown.
CHECKING HYDRAULIC
CONNECTIONS
1. See the Operators Manual and check the level of
oil in the hydraulic reservoir. Add as needed.
2. Start the engine and run the engine at low idle.
3. Put the selector lever in the PLOW LIFT position.
4. Use the attachment lever to raise and lower the
plow 2 or 3 times.
5. Lower the plow to the ground.
6. Put the selector lever in the TRENCHER LIFT
position.
7. Use the attachment lever to raise and lower the
trencher boom 2 or 3 times.
8. Put the trencher boom approximately 305 mm (12
inches) above the ground.
9. Slowly push the DIGGING CHAIN lever to the
TRENCH position for approximately 30 seconds.
10. Slowly pull the DIGGING CHAIN lever to the
STOP position.
11. Lower the trencher boom to the ground.
12. Stop the engine and check for hydraulic oil leaks.
13. See the Operators Manual and check the level of
oil in the hydraulic reservoir. Add as needed.