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TOWING PROCEDURE
TOWING PROCEDURE
CAUTION: Be sure crawlers are securely blocked before disengaging gearbox clutch for towing.
1. Secure the machine by blocking crawlers.
2. Secure the tow bar to the towing vehicle.
TOWING PROCEDURE
3. Fasten a lanyard to the towing safety valve lever. The valve is mounted to the left front jack casing. Run the lanyard down the casing, along the tow bar and secure it to the towing vehicle. If during towing the tow bar should come loose from either the drill or the towing vehicle, the lanyard will trip the safety valve and set the drill propel brakes.
4. Disconnect the drive tumbler gearbox from the propel motor as follows:
a. Ensure that the propel pump controls are in neutral position b. Loosen shifter lever lock screw
c. Pull out shifter lever to disengage clutch d. Tighten shifter lever lock screw
5. Use the hand pump mounted to the right front jack casing. Pump the jack until 650 PSI (4,482 kPa) shows on the gauge near the pump.
NOTE: Anytime pressure drops below 500 PSI (3,450 kPa), brakes could drag resulting in premature brake failure.
NOTE: Do not tow at speeds greater than 0.9 mph (1.45 kph) Excessive planetary gearbox heating can occur.
6. When towing is completed, reverse the above procedure. The hand pump pressure can be released by turning the release valve on the pump.
CABLE REEL OPERATION
When the cable reel switch is in the AUTO position, is designed to pick up trail cable as the drill moves toward its power source. It is not designed to drag the trail cable over the ground.
The line pull is proportional to operating pressure. The correct line pull is when there is sufficient pull on the cable to wind it on the reel, but not too great to put unnecessary strain on the trail cable.
The line speed is dependent on the volume of hydraulic oil flowing through the system. The correct line speed is slightly faster than the travel speed of the drill.
To manually operate the cable reel, proceed as follows:
1. Start the main air compressor motor.
2. To spool the trail cable onto the reel, turn the cable reel switch to the REEL IN position.
3. To spool the trail cable off of the reel, turn the cable reel switch to the REEL OUT position.
LEVELING
To level the drill, proceed as follows:
1. Place the machine in the proper location to drill the required hole. Verify that the leveling jack pads will rest on solid footing. Cut or fill or reposition as necessary to achieve solid footing. Maximum angle for jack pad is 17°.
2. The operating mode selector switch must be in the DRILL position and the main air compressor motor must be energized.
NOTE: Normally the machine will be leveled using the automatic leveling switch, Step 3. For manual leveling use Step 4 through 7.
3.To level the machine automatically verify that the operating mode selector switch is in the drill mode, then turn the automatic leveling switch to the EXTEND position and hold the switch in that position. The Automatic Leveling/
Propel screen will come on automatically on the operator’s display terminal. Use the screen to monitor the drill as it is being leveled. The jack cylinders will extend and raise and level the machine. When the machine is raised and leveled, release the switch and it will spring return to the CENTER or OFF position. This procedure can be performed by the operator while he is seated at the main operator’s console.
4. To level the machine manually, use the three jack switches and the automatic leveling screen on the operator’s display terminal. The operator uses control switches on the right-hand console and observes the operator’s display screen.
5. Lower all four leveling jacks until they are resting on the ground. Then, starting with the low side (left or right) of the drill, slowly lower the jacks until the weight of the machine is resting on them. The leveling jack controls should be operated in pairs while doing this operation. This reduces the twisting of the drill frame. Once the weight of the machine is resting on the downhill side leveling jacks, slowly lower the uphill side leveling jacks until the machine weight is resting on them. The machine need not be raised a great deal during this operation, since the purpose is only to get the weight of the machine resting on the leveling jacks.
CAUTION: During this and subsequent leveling procedures, it is important that the drill stays as close to level as possible. Care should be taken especially when working on steep grades.
6. Once the machine weight is resting on the leveling jacks, the machine may be leveled. Starting with the downhill side of the machine, lower the two side leveling jacks to bring the machine into side-to-side level as observed on the operator’s display terminal screen. Then, once the machine is level from side-to-side, operate the leveling jack controls for the downhill end of the machine to bring the machine into level end-to-end as observed on the operator’s display terminal screen.
7. Once the machine is level, make sure that the weight of the machine is off of the crawlers. The preferred method of doing this is to raise the machine until the closest point of the lower rollers to the crawler belts is 2" to 7" (5.1 to 17.8 cm). This assures that the machine is resting on the leveling jacks while maintaining a low center of gravity.
MAST RAISING AND LOWERING
The mast on this machine is normally left in the raised position for most situations including propelling from hole to hole on a blast pattern. Lowering the mast is necessary under three conditions:
1. Maintenance work is not possible or too dangerous to perform with the mast up.
2. Long moves over 1,000 feet (304 m) where the drill will be towed into position, propelled at high speed, or be loaded onto a trailer.
3. Any situation when steep slopes are encountered. Contact Bucyrus Service Department if unsure of slope limitation for propelling.
MAST RAISING
CAUTION: Raising or lowering the mast is a two-person job. Do not attempt to raise or lower the mast without the assistance of a helper familiar with the procedures involved.
CAUTION: During the mast raising procedure personnel should be kept clear of the machine and the area immediately surrounding the machine, especially the front of the machine. No one is to be allowed on the mast, operator’s cab roof, or machinery house roof while the mast is in the air. Failure to heed this caution may result in the death or serious injury of personnel struck by the mast should it fall for some reason.
CAUTION: Limitations exist as to the length, diameter, wall thickness and number of drill pipes that may be stored in the pipe racks when raising or lowering the mast. Refer to the pipe size limitation chart in the appendix before attempting to raise or lower the mast. Failure to comply with these limitations will overload the mast, mast support and hydraulic system possibly causing loss of control of the mast.
1. Inspect the mast and machine exterior to ensure that all wires, hoses, cables, etc. are clear of the machine to prevent damage to the machine or equipment during the raising procedure. Check that the mast cylinder pins, mast hinge pins, and mast brace pins are in place and secured. Verify on the operator’s display terminal operator’s display screen that no reference to A-frame pins is shown. Verify that the operating mode selector switch is in the DRILL mode.
2. The main air compressor motor must be energized. Move the operation selector switch to the MAST/WINCH position. Slowly raise the mast by lifting and then slowly pushing the mast joystick, located on the right control console, forward. As the mast reaches an angle of 70 degrees it will begin to go over center and tend to come into the vertical position by itself. Care should be used once the mast has gone over center since the speed of the mast will increase sharply.
