Boart Longyear S250 Guida rapida

S250 ROCKDRILL

PARTS & SERVICE MANUAL

S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021

Certificate of Conformance

Each drill is supplied with a certificate of conformance, signed by

the assembly mechanic. It lists the drill’s actual test results at

the time of assembly. The certificate also describes the start-up

and lubrication procedures, and provides a brief health and

safety notice.

Important Safety Information

DO NOT START or OPERATE THE MACHINE until you have

READ this manual and UNDERSTAND the contents.

Non-authorised personnel MUST NOT under any circumstances

attempt to operate or repair the machine. This is a violation of

warranty.

Safety precautions listed in the manual are intended to alert the

operator and mechanics to physical dangers inherent in various

phases of operating and maintaining drilling equipment of this

kind.

Safe work procedures must always be the primary consideration

of all personnel when operating or maintaining the drill rig for

intended applications. Do not use in awkward or un-intended

applications. The Safety Precautions listed herein are not

intended to be exhaustive.

Operation of hand-held vibratory equipment should be restricted

to short intervals. For extended drilling applications, drill-rig-

mounted rockdrills are recommended.

HAZARD SIGNAL WORDS AND WARNINGS:

Hazard signal words are used throughout this manual. They

appear in the narrow left-hand column of several pages, and

with their additional text description, are intended to alert the

reader to the existence and relative degree of the hazard.

The signs DANGER, WARNING, CAUTION, and NOTICE are

defined as follows:

Indicates an imminently hazardous situation,

which if not avoided, will result in serious

injury.

The safety alert symbol is used to warn of

potential personal injury hazards.

S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021

Indicates a potentially hazardous situation,

which if not avoided, could result in serious

injury.

Indicates a potentially hazardous situation,

which if not avoided, may result in minor or

moderate injury.

Is used to make people aware of situations, and

gives hints for operation and maintenance,

which are important, but not hazard related. It

generally indicates an Operational Aid.

•The purchaser must provide proper training to ensure the

safety of all operators. Failure to provide training may result

in serious injury or death.

•Use only qualified service technicians. Failure to do so could

cause severe damage to the machine or the operator and

will void your warranty.

•Operating this piece of equipment without proper Personal

Protective Equipment could result in personal injury. Always

wear Personal Protective Equipment –i.e. hard hat,

industrial safety glasses, hearing protection, steel-toed

boots, and gloves. Heavy-use cut and impact, vibration

resistant gloves are recommended when working on or

operating the rockdrill.

•Operating this piece of equipment without proper hearing

protection may result in permanent hearing loss (dependent

on duration of exposure). For best protection from noise,

use both ear plugs and earmuffs simultaneously. A proper

hearing conservation program is the only effective means of

avoiding hearing damage when operating drills with

percussive power greater than 1 kW.

•Drilling can result in flying particles that may cause eye

injuries (always wear industrial safety glasses).

•ISOLATE all energy sources before servicing equipment.

•Apply safe lifting procedures and two-person lifts when

manually handling the rockdrill.

•Ensure that the drill, accessories, and all actions always

comply with applicable site and local health and safety

regulations.

S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021

•Never climb on top of the machine.

•Keep clear of rotating drill steel. Never wear any loose

clothing that could become entangled with the machine.

•Be aware that sliding and tilting parts can cause pinch and

crush points.

•Do not operate this piece of equipment while under the

influence of drugs, alcohol, or medication.

•Always keep your work area clean. Avoid dangerous

working environments.

•Be aware of the operating zones and recommended areas

for safe operation. Keep visitors a safe distance away from

the work area.

•Prepare proper tools and equipment. Always use the correct

tool for the job. Improper or homemade tools can cause

injury or machine damage and will void your warranty.

•Use only Boart Longyear replacement parts. Failure to do

so could cause severe damage to the machine or the

operator and will void your warranty.

•Do not change or alter the drill, its components, optional

equipment, or accessories without prior approval from Boart

Longyear. Unauthorized alterations will void the warranty,

render the equipment unsafe, or result in decreased

performance.

•Prolonged hand contact with vibrating machines may cause

Hand Arm Vibration Syndrome (HAVS or “white knuckle”

disease). Anti-Vibration gloves are recommended.

Dependent on vibration level and duration of exposure.

HAVS may cause:

1. Painful fingers, triggered by cold or wet conditions

2. Loss of sense of touch and temperature

3. Numbness and tingling

4. Loss of grip strength

5. Loss of manual dexterity

•The purchaser must ensure safe application of this

equipment for all users, based on total daily exposure to a

vibration magnitude of 20-25 m/s2. This includes but is not

limited to:

1. Limited daily operating time for each operator of this

equipment, based on the vibration magnitude above

S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021

and all relevant regional regulations and guidelines

for vibratory equipment.

2. Regular or daily health assessments of each operator

including challenging for HAVS symptoms.

Affirmative responses to any of the following

questions may indicate a risk and requires

eliminating exposure and immediate medical referral:

i. Have your fingers gone white on exposure to

cold?

ii. Have you had any tingling or numbness in

your fingers after using vibrating equipment?

iii. Are you experiencing any problems with

muscles or joints in your hand or arms?

iv. Do you have any difficulty picking up small

objects such as screws or nails?

Operating a rockdrill without lubricant or with incorrect lubricant

can cause EXTENSIVE DAMAGE to the working parts of this

machine. NO CLAIM AGAINST PRODUCT WARRANTY will be

considered by the manufacturer if these procedures have not

been followed. NO CLAIM AGAINST PRODUCT WARRANTY

will be considered by the manufacturer if Boart Longyear

replacement parts are not used in repair. All rockdrill repairs

should be performed by properly trained and equipped service

technicians. Failure to adhere to these requirements will void

your warranty.

S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021

WARNING SIGNS AND SAFETY LABELS:

Figure 1. Caution Label

Figure 2. S250 Standard Caution Label Location

S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021

Figure 3. S250 Muffled Caution Label Location

 
 
 
S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021 

TABLE OF CONTENTS 
 
Chapter 1: Introduction and General Information....................................................................... 9 
1 Introduction.............................................................................................................. 9 
2 Standard Warranty Policy .......................................................................................10 
3 Ordering Parts.........................................................................................................12 
4 Returning Parts.......................................................................................................12 
5 General Description ................................................................................................13 
6 Features..................................................................................................................13 
Chapter 2: Maintenance Procedures........................................................................................14 
1 Rockdrill Repair Shop .............................................................................................14 
1.1 Recommended Workshop Set-Up....................................................14 
1.2 Recommended Tools and Equipment..............................................14 
2 S250 Tool Kit..........................................................................................................15 
3 General Maintenance Overview..............................................................................17 
Chapter 3: S250 Jackleg/Sinker Drill Maintenance..................................................................18 
1 Disassembly Procedures ........................................................................................18 
1.1 Clevis Body......................................................................................18 
1.2 Control Handle.................................................................................20 
1.3 Water Valve & Water Tube...............................................................25 
1.4 Water Valve.....................................................................................26 
1.5 Water Inlet .......................................................................................28 
1.6 Air Inlet ............................................................................................29 
1.7 Throttle Valve Assembly ..................................................................30 
1.8 Steel Retainer..................................................................................31 
1.9 Side Rods........................................................................................33 
1.10 Ratchet Ring & Rifle Bar..................................................................35 
1.11 Piston...............................................................................................36 
1.12 Valve Box.........................................................................................38 
1.13 Cylinder Lug Bushing.......................................................................39 
1.14 Front Cylinder Assembly..................................................................41 
1.15 Chuck Insert.....................................................................................43 
1.16 Rifle Nut...........................................................................................44 
1.17 Chuck Nut........................................................................................45 
2 Assembly Procedures.............................................................................................47 
2.1 Clevis Body......................................................................................47 

 
 
 
S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021 

2.2 Control Handle.................................................................................48 
2.3 Water Control & Water Tube............................................................50 
2.4 Water Inlet .......................................................................................50 
2.5 Throttle Valve Assembly ..................................................................51 
2.6 Steel Retainer..................................................................................52 
2.7 Side Rods & Fronthead....................................................................54 
2.8 Ratchet Ring & Rifle Bar..................................................................55 
2.9 Piston...............................................................................................57 
2.10 Valve Box.........................................................................................57 
Chapter 4: S250 Stoper Drill Maintenance...............................................................................58 
1 Disassembly Procedures ........................................................................................58 
1.1 Drill ..................................................................................................58 
1.2 Stoper Air Leg..................................................................................63 
2 Assembly Procedures.............................................................................................66 
2.1 Drill and Stoper Air Leg....................................................................66 
Chapter 5: Critical Part Inspection Criteria ...............................................................................71 
1 Cylinder..................................................................................................................71 
2 Piston.....................................................................................................................71 
3 Valve Box...............................................................................................................71 
4 Rifle Nut.................................................................................................................71 
5 Chuck Nut..............................................................................................................71 
6 Rifle Bar.................................................................................................................71 
7 Chuck Insert...........................................................................................................71 
Chapter 6: Testing Procedures ................................................................................................72 
1 Break-in Period......................................................................................................72 
2 Start-Up and Lubrication........................................................................................72 
3 Jackleg/Stoper/Sinker Testing................................................................................73 
4 Water Testing.........................................................................................................74 
Chapter 7: Troubleshooting Guide ...........................................................................................75 
 
 
 
 
 
 
 
 

S250 ROCKDRILL | PARTS & SERVICE MANUAL January, 2021

Chapter 1:

Introduction and General Information

1.1 Introduction

The purpose of this manual is to furnish the Service Technician

with detailed information to achieve the maximum operating

performance of the drill. A Wall Chart with a comprehensive

parts list and views to aid in ordering parts is available at

www.boartlongyear.com.

Boart Longyear is backed by over 125 years of experience in the

design, manufacture, and operation of Percussive Drilling

equipment. Many of the accepted practices in use today were

pioneered by Boart Longyear.

To obtain the utmost in performance and life of the equipment, it

should be given regular care and operated in accordance with

the instructions.

Ensure a quality rockdrill lubricant is used,

preferably mineral-based or Pneuma-ToolTM, and

that consumption amounts are sufficient.

Inspect and replace worn front end and chuck parts

promptly.

Ensure the drill is being operated correctly to avoid

steel and drill rod misalignment.

Check conditions of hoses and connections for fit

and keep the bolts on the drill tight.

Read the manual carefully before attempting to

operate this equipment and keep this book handy

at all times for reference when any questions arise.

This manual is a general description of the operation and

maintenance requirements for all S250 rockdrills. Pictures,

descriptions, and technical data may not match the drill in every

aspect.

The purchaser must ensure safe application of this equipment

for all operators. This manual is only a general guide to

Ensure proper safety apparel is worn when

servicing the equipment

Indice

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