Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility. Failure to follow all safety guidelines prescribed in this document and by governing authorities and regulatory agencies may result in severe injury or death of personnel or machine damage. Do not operate any control lever until certain that all personnel are clear of any machine movement, even if the pump motor is not running. Personnel may be seriously injured or killed if struck by a moving machine or machine component. |
This story includes the following tests:
- Static Test (Pressure Control)
- Movement Test (Flow Control)
- Rotation at full speed
- Movement Test (Counterbalance Valve Setting)
- Slap test
Static Test (Pressure Control)
Note: All tests and all adjustments must be made wile the hydraulic oil is at normal operating temperature.
- Move the machine to a smooth, horizontal location that is away form operating machines and away from personnel.
- Permit only one operator on the machine. Keep all other personnel away from the machine or in the operators sight.
- Place the machine in the DRILL position.
- Engage the Parking brake.
- Move a section of pipe so that it can be clamped by the deck wrench.
- Engage the sliding deck wrench with the flat of a pipe section.
- With the deck wrench jaw engaged with the pipe flat so that the pipe cannot lower, lower the rotary head so that feed pressure spikes to maximum.
- Using the thumb screw control, lower the feed pressure all the way down to minimum.
- Again, using the thumb screw control, raise the feed pressure back up to maximum.
- Slowly step down feed pressure to minimum (
−1379 kPa (−200 psi) then689.5 kPa (100 psi) ). - Slowly step up feed pressure to maximum (
1379 kPa (200 psi) then−689.5 kPa (−100 psi) ).
Note: All tests and all adjustments must be made wile the hydraulic oil is at normal operating temperature.
- Move the machine to a smooth, horizontal location that is away form operating machines and away from personnel.
- Permit only one operator on the machine. Keep all other personnel away from the machine or in the operators sight.
- Place the machine in the DRILL mode.
- Engage the parking brake.
- Feed / Hoist the rotary head at full speed.
- Let off the operator joystick so that it spring centers to neutral.
Note: Rotary head should stop without any overshoot.
- Repeat above steps incrementally in both the feed and hoist directions.
Note: All tests and adjustments must be made while the hydraulic oil is at normal operating temperature.
- Move the machine to a smooth, horizontal location that is away from operating machines and away from personnel.
- Permit only one operator on the machine. Keep all other personnel away from the machine or in the operator sight.
- Place the machine in the DRILL mode.
- Engage the parking brake.
- Engage the rotary head. Operate at full speed.
- Let off the operator joystick so that it spring centers to neutral.
Note: The head should stop rotating without any overshoot in either direction.
Movement Test (Counterbalance Valve Setting)
Note: All test and adjustments must be made while the hydraulic oil is at normal operating temperature.
- Move the machine to a smooth, horizontal location that is away from operating machines and away from personnel.
- Permit only one operator on the machine. Keep all other personnel away from the machine or in the operator sight.
- Place the machine in the PARK position.
- Engage the parking brake.
- Start the engine.
- Feed / hoist the rotary head in small increments.
Note: The rotary head should move slowly without and chatter or jerky starts and stops.
Note: All tests and adjustments must be made wile the hydraulic oil is at normal operating temperature.
- Move the machine to a smooth, horizontal location away from operating machines and away from personnel.
- Permit only one operator on the machine. Keep all other personnel away from the machine or in the operator sight.
- Place the machine in the DRILL mode.
- Engage the parking brake.
- Position a section of pipe so that the deck wrench can engage with the pipe flats.
- Engage the deck wrench with the pipe flats.
- Using rotation pressure, bash the flats on the pipe section.
- Carefully let off the joystick to observe the responsiveness of the pump controls.
Note: The pumps should spike naturally, but also drain down smoothly and responsively.
- Using hoist pressure, move the pipe section so that there is able to be a few inches of movement downward.
- With the deck wrench still engaged, bash the flats of the pipe section using feed pressure.
- Carefully let off the joystick to observe the responsiveness of the pump controls.
Note: The pumps should spike naturally, but also drain down smoothly and responsively.