Format: PDF (Printable Document)
File Language: English
File Pages: 148
File Size: 7.66 MB (Speed Download Link)
Brand: Cat
Model: MD5125 Hydraulic Track Drill
Type of Document: Operation and Maintenance Manual
$ 50
The Cat MD5125 Hydraulic Track Drill is designed for precise, high-energy drilling in mining and quarry environments. This Operation and Maintenance Manual explains the drill’s feed control, rotary torque delivery, hydraulic regulation, cooling behavior, and track propulsion. Operators learn how to position the machine for stable drilling, manage penetration speed, and monitor system temperature under long, demanding cycles.
Applications & Use Cases
Setting proper drilling parameters for different rock types
Monitoring hydraulic pressure and rotary speed
Diagnosing feed motor hesitation or torque fluctuation
Performing cooling system and lubrication checks
Planning maintenance for prolonged drilling operations
FAQ
Does this manual cover drilling technique?
Yes. It explains how feed pressure and rotation speed must balance.
Is it helpful for long operational shifts?
Very. It includes routines for preventing overheating and system fatigue.
Safety Note
Secure the track system and fully isolate hydraulic power before servicing feed or rotary components.
SECTION 1 SAFETY
Overview of Potential Hazards …………………………………………………………………………………. 1-2
Before Operation ………………………………………………………………………………………………….. 1-3
Clearance from High Voltage Lines …………………………………………………………………………… 1-3
Operation and After Operation …………………………………………………………………………………. 1-4
Maintenance and Equipment Transfer ………………………………………………………………………… 1-5
Stability Limits ……………………………………………………………………………………………………… 1-6
SECTION 2 OPERATOR CONTROLS
Tram / Drill Positioning Controls………………………………………………………………………………. 2-2
Instrument Panel – Non-Cab with 3306 Engine ……………………………………………………………… 2-4
Instrument Panel – Non-Cab with C11 Engine ……………………………………………………………….. 2-6
Drilling Controls – Non-Cab Machine …………………………………………………………………………… 2-8
Instrument Panel – Cab Machine ……………………………………………………………………………… 2-12
Drilling Controls – Cab Machine ………………………………………………………………………………. 2-14
Tramming Controls – Cab Machine ………………………………………………………………………….. 2-16
Drill Positioning Controls – Cab Machine …………………………………………………………………… 2-18
Air Ride Seat Adjustment ………………………………………………………………………………………. 2-20
SECTION 3 OPERATING PROCEDURES
Personal Safety ……………………………………………………………………………………………………. 3-2
Walk-Around Checks ……………………………………………………………………………………………… 3-3
Pre-Start Checklist ………………………………………………………………………………………………… 3-4
Engine and Gearcases ………………………………………………………………………………………….. 3-5
Pneumatic System ………………………………………………………………………………………………. 3-5
Feed Table Pivot Pin …………………………………………………………………………………………….. 3-6
Weekly Checks……………………………………………………………………………………………………. 3-6
Boom, Feed and Drill ……………………………………………………………………………………………. 3-7
Drill Accumulators ……………………………………………………………………………………………….. 3-7
Daily Maintenance Checklist …………………………………………………………………………………….. 3-8
Mounting & Dismounting Machine …………………………………………………………………………….. 3-9
Start-Up Procedure ……………………………………………………………………………………………… 3-10
Cold Weather Starting ………………………………………………………………………………………… 3-11
Tramming-Preliminary Checks and Warnings ……………………………………………………………… 3-12
Tramming from Operator’s Cab ……………………………………………………………………………… 3-13
Tramming from Tram Station ………………………………………………………………………………… 3-14
Shutdown Procedure……………………………………………………………………………………………. 3-16
SECTION 4 DRILLING PROCEDURES
Loading Drill Steel …………………………………………………………………………………………………. 4-2
Drill Positioning Procedure ……………………………………………………………………………………… 4-4
Position Feed for Vertical Drilling …………………………………………………………………………….. 4-6
Vertical Indicator (optional) …………………………………………………………………………………….. 4-6
Position Feed for Angle Drilling ………………………………………………………………………………. 4-7
Repositioning Feed or Lowering Feed to Horizontal Position …………………………………………. 4-7
SECTION 4 DRILLING PROCEDURES
Final Checks ………………………………………………………………………………………………………. 4-9
Drilling Procedure ……………………………………………………………………………………………….. 4-10
Collaring the Hole ……………………………………………………………………………………………… 4-10
Collaring Circuit ………………………………………………………………………………………………… 4-13
Normal Drilling ……………………………………………………………………………………………………. 4-13
Drilling Practices …………………………………………………………………………………………………. 4-14
Collaring ………………………………………………………………………………………………………….. 4-14
Hole Deviation …………………………………………………………………………………………………… 4-14
Feed Pressure ………………………………………………………………………………………………….. 4-14
Drill Pressures ………………………………………………………………………………………………….. 4-14
Adjusting Drill Pressure and Monitioring the Machine …………………………………………………. 4-14
Plugged Bit and Stuck Drill Steel……………………………………………………………………………. 4-14
Anti-Jam System (optional) …………………………………………………………………………………….. 4-16
Reverse Percussion (optional) ………………………………………………………………………………… 4-18
Adding and Removing Drill Steel ……………………………………………………………………………… 4-20
Adding Drill Steel ……………………………………………………………………………………………….. 4-20
Removing Drill Steel …………………………………………………………………………………………… 4-21
Drill Shank Replacement ……………………………………………………………………………………….. 4-23
Indexing the Swing Cylinder …………………………………………………………………………………… 4-24
SECTION 5 PREVENTIVE MAINTENANCE
Hydraulic Oils for Percussion Drills……………………………………………………………………………. 5-2
Lubrication and Inspection ………………………………………………………………………………………. 5-3
Engine Oil ……………………………………………………………………………………………………………. 5-3
Bolt Maintenance ………………………………………………………………………………………………….. 5-4
Bolt Torque Specifications ………………………………………………………………………………………. 5-5
Preventive Maintenance Chart ………………………………………………………………………………….. 5-6
SCH5000 Grease Points – Overall Machine ………………………………………………………………….. 5-8
Grease Point Chart ……………………………………………………………………………………………….. 5-9
Grease Points – Drill & Centralizer………………………………………………………………………….. 5-10
Grease Points – Feed & Feed Drive ………………………………………………………………………… 5-11
Grease Points – Lower Rod Rack & Rod Wrench ……………………………………………………….. 5-12
Grease Points – Rod Rack Driveline ………………………………………………………………………… 5-13
Grease Points – Upper Rod Rack & Hose Reel ………………………………………………………….. 5-14
Grease Points – Feed Table …………………………………………………………………………………… 5-15
Grease Points – Positioner (12 Ft. Feed) …………………………………………………………………. 5-16
Grease Points – Positioner (20 Ft. Feed) …………………………………………………………………. 5-17
Grease Points – Boom Assembly …………………………………………………………………………… 5-18
Grease Points – Drill Console Boom (non-cab) …………………………………………………………… 5-19
Grease Points – Cab Mounting ………………………………………………………………………………. 5-20
Grease Points – Track Assembly ……………………………………………………………………………. 5-21
Grease Points – Headrest for 20 Ft. Feed ……………………………………………………………….. 5-22
Grease Points – Fan Drive, Caterpillar C10 & 11 Engine ……………………………………………… 5-22
Maintenance Record ……………………………………………………………………………………………. 5-23
Table of Contents
SECTION 4 DRILLING PROCEDURES
Final Checks ………………………………………………………………………………………………………. 4-9
Drilling Procedure ……………………………………………………………………………………………….. 4-10
Collaring the Hole ……………………………………………………………………………………………… 4-10
Collaring Circuit ………………………………………………………………………………………………… 4-13
Normal Drilling ……………………………………………………………………………………………………. 4-13
Drilling Practices …………………………………………………………………………………………………. 4-14
Collaring ………………………………………………………………………………………………………….. 4-14
Hole Deviation …………………………………………………………………………………………………… 4-14
Feed Pressure ………………………………………………………………………………………………….. 4-14
Drill Pressures ………………………………………………………………………………………………….. 4-14
Adjusting Drill Pressure and Monitioring the Machine …………………………………………………. 4-14
Plugged Bit and Stuck Drill Steel……………………………………………………………………………. 4-14
Anti-Jam System (optional) …………………………………………………………………………………….. 4-16
Reverse Percussion (optional) ………………………………………………………………………………… 4-18
Adding and Removing Drill Steel ……………………………………………………………………………… 4-20
Adding Drill Steel ……………………………………………………………………………………………….. 4-20
Removing Drill Steel …………………………………………………………………………………………… 4-21
Drill Shank Replacement ……………………………………………………………………………………….. 4-23
Indexing the Swing Cylinder …………………………………………………………………………………… 4-24
vi Introduction
SECTION 6 DRILL MAINTENANCE
Charging the Accumulators …………………………………………………………………………………….. 6-2
Requirements …………………………………………………………………………………………………….. 6-2
Procedure …………………………………………………………………………………………………………. 6-3
Checking the Accumulator Charge Pressure ……………………………………………………………….. 6-4
Accumulator Charge Kit …………………………………………………………………………………………. 6-6
Drill Lubrication …………………………………………………………………………………………………….. 6-7
Grease Lubrication with a Hand Grease Gun ……………………………………………………………… 6-7
Grease Specifications …………………………………………………………………………………………… 6-7
Automatic Lubrication…………………………………………………………………………………………… 6-7
Automatic Grease Lubricator Operation ……………………………………………………………………. 6-8
SECTION 7 DUST CONTROL
Health Hazard Warning …………………………………………………………………………………………… 7-1
Dust Collector Assembly ………………………………………………………………………………………… 7-2
Function of Dust Collector …………………………………………………………………………………….. 7-3
Detailed Function of Components……………………………………………………………………………. 7-3
Initial Start-up and Tuning ………………………………………………………………………………………. 7-4
Dust Collector Valve Adjustment (3306 engine) ………………………………………………………….. 7-5
Dust Collector Valve Adjustment (C10 & C11 engine)…………………………………………………… 7-6
Air Pressure Regulator Adjustment ………………………………………………………………………….. 7-7
Timer Adjustment ………………………………………………………………………………………………… 7-8
Fan Speed Adjustment ………………………………………………………………………………………….. 7-8
Filter Elements ………………………………………………………………………………………………….. 7-10
Dust Collector Efficiency …………………………………………………………………………………….. 7-10
Operational Variables ………………………………………………………………………………………….. 7-11
Fine Tuning ………………………………………………………………………………………………………..711
Manometer Setup Instructions ……………………………………………………………………………… 7-13
Timer Installation ………………………………………………………………………………………………. 7-14
To Set Timer …………………………………………………………………………………………………. 7-14
Control Circuit (Hydraulic, Electric and Air) ………………………………………………………………. 7-15
Fan Removal and Installation ………………………………………………………………………………… 7-16
Troubleshooting Hints ………………………………………………………………………………………… 7-17
