PL6035

cPN 51792703 RevisionI

PARTSLIST
For
Hydraul¡cDrifter
Model: YH65A

Atlas Copco Drilling Solutions is the company fused from

D r i l l i n gS o l u t ¡ o n s '
A t l a s C o p c oa n d I n g e r s o l l - R a n d

Atlas Copco offers the widest range of drilling equipment and

consumables in the world, from a single company, backed by
the sales and service coverage expected of a global network'

-
ÃflnsCopao
M.atlascopco.com/drillingsolution. -

ReferAll GommunlcatlonsTo The NearestAddress LlstedOn The Back Gover.

i

::
PARTSLIST INDEX PL6035
Revision
I For Index
December 1,1994 HydraulicDrifterYH65A Page1 ot 2

ORDERINGINSTRUCTIONS
serviceparts,please
Whenordering specify:,.
1. The NAMEof eachpartas,listed.
2. The PARTNUMBERas listedor stampedon the part.
3. The SERIALNUMBERof the equipment.
DO NOT use illustrationnumberswhenorderingserviceparts. To savetime,sendall ordersfor
partsto the nearestbranchofficeor agent.lF lT lS NECESSARY
TO SENDANYPARTOFTHIS
EQUIPMENT TO THEFACTORYINQUIRE ATOUR NEARESTBRANCHOFFICEOR AGENT
FORSPECIALINSTRUCTIONS.

SERIALNUMBERISSTAMPED
INTHISAREAOFDRIFTER.

SAVETHESEINSTRUCTIONS.
DO NOTDESTROV

All inîormation,illustrations,and specificationsin this parts listare basedon the

Iatestinformation.availableat.thetime of publication. ProductÍmprovementis a, .,
continuinggoal at Ingersoll-RanË. Designand specificationsare subjectto change
without notice or obligation.

Whenthe life of the tool hasexpired,it is recommendedthat thetool be disassembled,

degreasedand partsbe separatedby materialso that they can be recycled.
 Each column includes the Parts List
Section Numbersapplicableto the assembly.
NAMEOF ASSEMBLY 11
5
Gomponentsof an assemblv
are indented.
Manual Section
No. No.

lntroduction
. . .. PL6035 1

Hydraulic
DrifterYH65A P16035 2

ReversePercussion
Kit . P16035 3

Rotation
Motor PLô035 4

GeneralInformation P16035 5

,)

Page2, Index,PL6105
PARTSLIST PL6035
INTRODUCTION SectionI
December
1,1994 Page1 of 2

AlphabeticalIndex
Title PaoeNo.
Introduction 1
SafetyFirst 1
SafetyPrecautions 1

1 . INTRODUCTION. instructions.Failureto complycouldresult

in bodilyinjury.
Thispartslistcontainssparepartnumbers,
generalmodelinformation and important b. Alwayswearapprovedhardhat, safety
safetyinformation forthe HydraulicDrifter shoes,safetyglasses,nosemaskandear
YH65A(hereafter referredto as drifter). protectionwhenneara drifterin operation.
c. Use only Ingersoll-Rand@
replace-
SAFETYFIRST. mentparts.
SAFETYFIRSTis theprimaryconcern,.for d-- Keep hands,,arms* legs and clothing
the protectionof both,personnel'and.the,, away from all moving.pârts:,,Failure.to
drifterduringanyphaseof operation.All complycouldresultin bodilyinjury.
personnel mustthoroughly understandall
safetyprecautions beforeoperating
or:do- e. The drifter,strikingbar,couplings,drill
inganymaintenance workonthedrifter. steelsand bit are hot during:thedrilling
operation. Do"not touch these,partswith
your bare hands. Wear glovesto protect
SAFETYPRECAUTIONS. yourhandswhenyou arechangingbitsor
steels. A severeburn will resultif rotating
TheSafetyPrecautions listedareintended partsare touchedwith barehands.
to makeallpersonnel awareofthehazards
whileworking on or neara drifter.All per- f. Keep all hose connectionstight. A
sonnelmustuse commonsenseand a loose hose connectionnot only causes
goodworkingpractice whileoperating and leaksand poorperformance, but mayalso
maintaining thisdrifter.Thesafetyprecau- allowthe hoseto come offthe drifter,whip
tionslistedareofa generalnatureandcan- around,and injurethe operatoror other
notcovereverypossiblesituation: peoplein the area.
a. Donotattemptto operatethehydraulic g. Make sure that the parts--cleaning
drifterunlessyou are thoroughly
familiar solventis non-flammable,
willnotharmthe
with allthe crawlergauges,controls,and skin, meets current safety and health
functions. Referto the sectionof the standards,and is used in well ventilated
crawler instructionbook for detailed area.
 h. Drynitrogenis theonlygasproductto attempted.
beusedto chargethedrifteraccumulators.
Never use oxygen to charge the j. Make sure the accumulators are in
lgnition
accumulators. ofanoxygenandoil good condition. Make sure the
couldproduce
mixture which
anexplosion, accumulator components haveno cracks ì
injurepersonnel
couldseverely inthearea. or signs of excessivewear. When
pressurized,a damagedaccumulator
could burst,scatteringmetal fragments
i. Be sure to bleedthe accumulators throughoutthe areawhichcouldseverely
beforeany accumulator is
disassembly" injurepersonnel:

\rìi
:,';

Page2, Section I, PL6035

 PARTSLIST HydraulicDrifter PL6035
1 Rev¡s¡on1 YH65A Section2
December1, 1994 PageI of 5

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Hydraulic
DrifterYH65A - Explodedlllustration
(ForPartsList,referto Page3)

\*¿/' -.1
 HydraulicDrifterYH65A
(Forlllustrationof parts,referto Pages1 & 2)
NAMEOFPART
REF. PART Partsindentedunderan item
NO. NO. QTY. REMARKS
areincludedwiththatitem.

51533032 HydraulicDrifterYH65A
(coNsrsTsoF THEFoLLOWtNc)
51525962 ASSEMBLY
BAGKHEAD 1
1 51525970 .BACKHEAD 1
) 51206068 SI IPPôFITtrFI FII ôW TIIFItr I
o $ sl206076 .O-RING 1
t 4
51206084 .O-RING 1
5 51176477 .PIN.SPRING 1
6 51206092 .l-,LU(j 2
7 51206100 .PLUG 2'l
R 5rl7A¿O1 ADAPTFFI
I 51166056 .ADAPTER, HOSE 2
1 0 51208/'78 .BUSHING 1
11 51 2n8¿60 .BUSHING 1
12 51162212 .SEAL 1
1 3 50748250 .SEAL 4
51206126 ASSEMBLY. BACKHEADGLAND 1
1 4 5 1 2 0 6 1 3 4 .GLAND, BACKHEAD 1
1 5 50748250 .SEAL 1
1 6 51206639 .ADAPTER 1
1 t cl't /oc4it .NUl, fl(Jst I
. 1 8 51103778 .O-RING 1
Ã'r2nA1Ãq ASSFMFIIY FII ÔW TIIRtr: 1
1 9 51206142 .TUBE,BLOW 1
20 51206167 .RUBBER 1
2 1 5120]F175, .HOLDER.RUBBER 1
51206183 ASSEMBLY CYLINDER 1
22 51206191 "CYLINDER 1
c 2 3 511fl¿'22' .O-RING 1
'24 51206217 .O-RING 2
51206225 ASSEMBLYCYLINDER
LINER 1
25 51206233 .LINER.
CYLINDER 1
x26 51206241 .litsAL, ö ¡ hP 2
51206258 ASSEMBLY
BACKL]NER 2
,7 ÃI 'NA'AA BACK I INtrFI (ìYI INDtrFI I
28 51206076 .O-RING 1
x29 51206282 .SEAL,STEP 1
reo 512n63nR .SEAL SLIPPFFì 1
31 51206316 .GUIDE,VALVE 1
32 51206324 .VALVE, 1
13 F19ñAAAD PISTON 'l

51206340 ASSEMBLY FRONTLINER 1

3451206357 "L]NER, FRONT 1
. 3 5 51206365 -O-RING 1
x 3 6 51206373 .RING, WIPER 1
5 1 1 5 5 1 2 5 ASSEMBLY
ACCUMULATOR 2
Q7 Ãl tn^aal RôNV I

38 51206399 .COVER 1
o 3 9 51206407 .DIAPHRAGM 1
AA 8117A7^,1 \/at\/tr 1
¡41 51't76758 .WASHER,
SEAL 1
(coNTrNuED)

Page 3, Section 2, PL6035

 HydraulicDrifterYH65A(Gont.)
lllustfat¡onof parts. refer to 1 &

PART NAMEOF PART

REF. l
Partsindentedunder an item QTY. REMARKS
NO. NO.
are includedwith that item.

51533032 HydraulicDrifterYH65A(Gon't.),.'
(coNsrsTsoFTHEFoLLOWTNG)

42 50748334 .CAP 1
43 51206415 .O-RING 1
Á.^ Flrt'tÂ.Ãt? BOIT ¿
51206431 ASSEMBLYHYDRAULICMOTOR 1
45 51205508 .MOTOR,ROTATION 1
(REFERTO SECTION
4)
.46 51206449 .O-RING 2
'47 51176808 .O-RING 1
Àe ÃltnA,/,|Ã^ ÂDAPTtrFI t
49 51329308 .CAPSCREW 4
51525988 ASSEMBLYGEARBOX 1
5n 5l 6tÂoo BOX GFAFI 1
51 51206498 .BUSHING 1
52 51206084 .O-RING 1
53 51176477 .PIN.SPRING 1
51206514 ASSEMBLY DRIVEGEAR 1
54 51206522 .GEAR,DRIVE 1
55 50781962 .BEARING. BALL 2
51206530 Al'ötsME LY,tuLts,l-tLitsAt+ 't
56 51206548 .GEARIIDLER 1
q7 512nÂ555 RtrAFIINGNtrtrDItr D ]
58 51æ6597 .SHAFTGEAR 1
59 51206605 .O-RING 1
512n4Â't3 ASSEMBLY COVFR 1
60 51206621 .COVER 1
61 51206415 .O-RING 1
62 50945385 .BOLT 4
crc3/105 A!'I'tsMtsLY' DI.IIVEH 1
63 51206662 .DRIVER, CHUCK 1
64 515331 07 .SET,BUSHING 1
cr õó/ I c/ Aöstr,ME LY, UHUUK ts,NU 1
65 51526010 .END,CHUCK 1
66 51206704 .O-RING 1
0t ot¿voI tz .ÞuÐt1t¡\r¡ I
68 51533073 .GHUCK 1
51537173 ASSEMBLYCAP 1
ov o lzuol+o .v¡tr, \/nu9^ trt\u I
70 5 1 5 3 3 1 1 5 .LINER,
CAP 1
. 7 1 51104248 .O-RING 1
51206779 AtjötsMELY, BULI z
72 50944990 .BOLT 1
73 51206787 .NUTNYLON 1
þlzuoð29 flùùtr,tvtE LT, trY tr E(JLl I
76 51206837 .BOLTEYE 2't
77 Ã'ltnAn¿Ã PI ATF HOÔK
78 5120ô852 .BOLT 2
79 50855923 .WASHER,
SPRING 2
(coNTTNUED) i

Page4, Section 2, PL6035

 HydraulicDrifterYH65A(Gont.)
or lllustrat¡onof parts,referto PaqesI &

REF. PART NAMEOF PART

NO. NO. Partsindentedunderan item QTY. REMARKS
areincludedwith that item.

51533032 HydraulicDrifter YH65A(Cont.)

(coNsrsTsoF THEFoLLOW¡NG)

51525939 ASSEMBLYBOLT 4
80 51525947 .BOLI THROUGH 1
fH Ãt t7Ãn^e .O-RING 1
82 51525954 .NUT 1

ACCESSORIES
(Furnishedonly when speciallyordered)
51389930 LUBRICANÏTHREAD(LEADFREE). 14c.2
51389948 LUBRICANT
THREAD(LEADFREE). 1 GAL
E1A7A7rl1 ROCK DRILL OII II IGHTI 1 êAl
51378727 ROCKDRILLOI (LTGHT) 5 GAL
51378743 ROCKDRILLOI (LrGHr) 55 GAL
5117RAqî ROCKDRILLOI IMEDIUMì 1 GAI
51378719 ROCK)RrLLOrL(MED|UM) 5 GAL
51378735 ROCK)Rn_LOtL(MEDtUM) 55GAL
5137F'7F,4 ROCKfRILL OIt íI{FAVYì. 1 fìÂI
51378792 ROCKDR|LLOtL(HEAVY) 5 GAL
51378800 ROCK DRTLLOtL (HEAVY) 55 GAL
. NOTICE:THESE IN O-RlNc KIT513I809S:'
PARTSAREFURNISHED
X NOTICE:THESEPARTSAREFURNISHEDlN SEALRtNc KtT51318103:.
r NOTIGE:THESEPARTSAREFURNISHED
tN DTAPHRAGM KtT51319111;

Page 5, Section 2, PL6035

 ¡

Ìiì

]
PARTSLIST PL603s
I
Revision PERCUSSION
REVERSE KIT Section3
December1, 1994 Paqe 1 of 2

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.Ë ED

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(O nvo
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O- tt
of,
9 o
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 REVERSEPERCUSSION KIT
(For lllustration of parts, refer to Pages 1)
ìrÌ

NAMEOF PART
REF PART Parts indentedunder an item QTY. REMARKS
NO. NO. are includedwith that item.

51512028 REVERSEPERCUSSION KIT

(coNsrsTsoFTHEFoLLOW|NG)
51526028 ASSEMBLY CHUCKEND 1
83 51526036 .END,CHUCK 1
84 51206704 .O-RING 1
85 51206712 .BUSHING 1
86 51206720 .CHUCK 1
51333680 ASSEMBLY. HOUSING 1
87 51264661 .HOUSING, REVERSE 1
88 51264760 .LINER, HOUSING 1
o89 51104263.O-RING 1
51333722 ASSEMBLYBOLT 2
90 51264778 .BOLT 1
91 51264786 .NUÏ NYLON 1
51333698 EUI I(JM L;YLINUtsI-{ 1
92 51264679 .ASSEMBLY BOTTOMCYLINDER 1
o93 5 1 1 6 1 6 3 6.O-RING 1
ç94 51156461 RING,BACK-UP 1
.95 51264695 SEAI- 2
o96 51264703 RING;WEAR- 1
51333706 AI'StsMBLY, I (JP çYLINUbH 1
j
97 51264711 .CYLINDER, TOP 1
o o R F,11nÁrÀA O-RING 1
. 9 9 51264729 .SEAL 1
o100 51264737 .RING, WEAR 1
R1?AA71L PISTON ASSFMR]V l'

101 ++ .PISTON 1
102 ++ .BUSHING,
PISTON 1
F126./,.79,AASSEMBLY.
ACCUMULATOR 2
1 0 3 51264802 .BODYACCUMULATOR 1
1 0 4 51264810.COVER,ACCUMULATOR 1
1 0 5 51264828 .DIAPHRAGM 1
ruþ 511íOt41 .VALVtr, 1
107 51176758.WASHER, SEAL 1
1 0 8 50748334 .CAP 1
1109 51104172 .O.RING 1
O 1 1 0 51203909 RING,BACK.UP 1
1 1 1 51328029 .BOLT 4

r NOTIGE:THESEPARTSAREFURNISI-ìED .,
INO-RlNc KIT'51537.124..
. NOTICE:THESEPARTSAREFURNISHEDlN SEALRlNc KIT51537132.
++ NOTIGE:THESEPARTSARENOTSOLDSEPARATELY'THEYARE ¡NCLUDEDIN PISTON
ASSEMBLY
51333714.
\
f
'"...'/d

Page2, Section3, PL6035

PARTSLIST PL6035
RevisionI ROTATIONMOTOR Section4
December
1, 1994 1ot2

RotationMotor- Explodedlllustration
(For Parts List, refer to Page2)
 RotationMotor
(Forlllustrationof parts,referto Page1)

$
NAMEOFPART
REF PART Partsindentedunderan item QTY. REMARKS
NO. NO. areincludedwith thatitem.

51205508 ROTATIONMOTOR
(coNstsrsoFTHEFoLLowlNG),
1 51540847 HOUSING,BEARING 1
2 51540870 KIÏ SHAFVBEARING 1
3 51540896 PLATE.WEAR 1
4 51539039 DRIVE 1
5 51539047 GEROLER 1
6 51538999 DRIVE.VALVE 1
7 51540938 PLATE,VALVE 1
I 51539005 VALVE 1
I 51540953 PLATE,BALANCE 1
10 b'tb39uz1 SPR¡NG 2
11 51539013 P I N 2
1' Ã'tÿ'tnnl t{ôl tstNtê \/Ât \/tr I
1 3 5 1 5 4 1 0 1 9PLUG,BOSS 1
1 4 51541035 BALL,STEEL 2
1à Ãlÿnon7 Þt illì Flr'ìs,s o
1 6 51287753 BOLT 4
5 1 3 1 8 1 2 9KIT MOTORSEAL 1
^1t9.77/l,A KIT S,l-tatrTstrÂl I
17 ++. ..SEAI-,..DUST 1 li
18 ++ ..o-RtNG 1
19 -ts+ sFAt orl 1
20 ++ ..SEAL,SHAFTFACE 1
51287738 .KIT MOTORREARSEAI.. 1
21 ++ O-FIING 2
22 ++ ..o-RING 3
23 ++ ..o-RrNG 1
24 ++ ..SEAL,OUTERFACE 1
25 ++ ..SEAL,INNER
FACE 1
26 ++ ..o-RrNG 1
27 ++ ..o-RrNG 2

++ NOTICE:THESEPARTSARENOTSOLDSEPARATELY lN THEKIT lN WHICH

THEYARE INCLUDED
THEYAREINDENTED
UNDER.

')

Page2, Section 4, PL6035

PARTSLIST PL6035
RevisionI GENERALINFORMATION Section5
December1, 1994 Page I of 2

BLOWERTUBE.

Thedrifterhassingleblowertubeconstruc-.
The information usedinthe preparation tion. Theblowertubecarriesholecleaningair
of thispartslistwastakenfromtheorigi- from the inlet connectionin the backhead,
nal PS-5435.57, YH65A Hydraulic throughthe centerof the drifter,strikingbar,
Drifter,partslist. steeland bit to the bottomof the hole without
contactingany of the internalparts of the
drifter.
GENERAL.

The YH65A HydraulicDrifter(drifter)is a CHUCKPARTS.

valved,hydraulically-operated hammerdrill
that incorporatesan integral,independently- The drifteris equippedwithchuckpartsto
controlled, hydraulically-poweredrotation accommodatea 6-splinestrikingbar.
motorto rotatethe drillsteeland bit.
ACGUMULATORS..
The drifter'"is
capable-of drilling,,2-112
to 4-.
in.(65to 102mm)diameterholesinalltypesof
rock formations.lt is especiallysuitable,for
pipelinework,drillingverticalandangleholes. '
in quarrieS,,âfìd: oft,,âfiy.constructionjobs;,... .BESURE-TO
BLEED..THE .
ACCUMU.,,....'
where largevolumerockexcavationsare re- LATORBEFOREANY ACCUMULA-
quired. TORDISASSEMBLY
ISATTEMPTED.

The drifter uses two built-in nitrogen-

ROTATION
MOTqB. charged,diaphragm-typeaccumulators to
dampenvibrations in the supplyand return
The hydraulically-powered rotationmotor lines.Thehighpressure accumulatormustbe
is independently
controlledandisdesigned to chargedto 853 psi (60 kg/cm2)and the low
providecontinuous - forward
drillsteelrotation pressure accumulator mustbechargedto 57
or reverse.Themotorconverts hydraulicfluid psi (4 kg/cm2).
power
to rotation and transmitsthe rotation
powertothespurgeartrainhousedinthedrift-
erfronthead.Thehydraulic rotation motorpro-
videssmooth,powerfulrotation, especiallyat
lowrotationspeeds,andassures theoperator An accumulator chargingk¡t is fur-
of positiverotationcontrolunderall drilling nishedas an accessoryitemwith the
conditions. machineon whichthe drifteris used,

@ tsol lngersott-RandCompany
FRONTEND LUBRICATION. REVERSEPERCUSSION KlT. (Furnished
Thedrifterusesan oil misttoprovidelubri-
Only WhenSpeciallyOrdered)
cationto all criticalpointsin thefrontendof the The standarddrifterdoesnot includere- \ ñ
drifter.A 3/8 in. (9.5 mm)diameterhoseline versepercussionasstandard equipment. The ;
connectedto the driftercarriesthe oil-laden reversepercussionkit mustbe orderedsepa-
air from a lubricator(partof the drillingma- rately.RefertoSection3 ofthispartslistforthe
chine)to the drifterfrontend parts. Oil flowis partnumber
controlledbythe lubricator locatedon thedrill-"
ing machine.
STRIKING BARS. (FurnishedOnly When
SpeciallyOrdered)(Table1)
Thedrifterdoesnotincludea strikingbar
Referto 1M6035,"lnstructionManual as standardequipment.Thestriking barrnust
ForHydraulicDrifterModelYH65A"for bespecially Table1liststheavailable
ordered.
maintenanceinstructions. strikingbarsforusewiththedrifter.

Table1. StrikingBars
StrikingBar StrikingBarSpecifications

SB38YH65 6-SplineDrive
(51780989) T38 Thread'(Male)
For 314in. (19 mm) DiameterBlowerTube )

SB4sYH65 Sameas aboveexceptwith

(51781003) T45 Thread(Male)
o SB45SYH65 6-SplineDrive
RP T45'Thread(Male)
(51781128) Fcir314in. (19 mm) DiameterBlowerTube
NOTIGE:Usean 8-digitpartnumber (51780989, 51781003,
or 51781128)
whenordering the required
strikingbar.
o NOTIGE:Thisstrikingbaris foruseONLYwiththe reversepercussion
op-
tion.

,j

Page2, Section 5, PL6035

E
,trflÃsCop,co
-

-Ì

Atlas CopcoDrilling Solutions,Inc. A CompanyWithin the Atlas Copco Group j

P.O.Box462288,2100North First Street Phone: +I972-496-7400
Garland,T exas7 5046-2288 Fax: +1972-496-7425
www.atlascopco.com/drillingsolutions info.acds@atlascopco.
com
 tM6035

MANUAL
INSTRUCTION
For
HydraulicDrifter
Mpdel: YH65A

fused from
Atlas Copco Drilling Solutions ¡sthe company
Atlas C o p c o a n d I n g e r s o l l - R a n D
d r i l l i n gS o l u t i o n s'

equipment and
Atlas Copco offers the widest range of drilling
the world, from a single company' backed by
.on"urnå¡t"t in
global networK'
the sales and service coverage expected of a

-
ÃflÃsCWao
-
ww.atlascopco.com/drill¡ngsolution"
]

I
I

\
¡'
 lnstructionManual tM6035
Revision1 TABLEOFCONTENTS SectionTC-l
' July 22,1992 Page1 of2

Section

INTRODUCT¡ON 1
AbbreviationList
Introduction
ReferenceMaterial
SupportEquipmentRequired

SAFETY ......2
lntroduction
SafetyFirst
SafetyPrecautions

DESCR¡PTION AND SPECIFICATIONS.

i DescriPtion
lntroduction
Specifications

oPERATTON. .......4
Air Requirements
BasicOperating Principles
DrillPistonReciprocation
DrillSteelRotation
Charging the DñfterAccumulators
Connecting the StrikingBarto the Drifter
DrillingProcedures
Drillingïps
Bit Care
DrillSteelCare
Suggestions for Drillers
HosesandFittings
Hydraulic Requirements
lntroduction
Lubrication Requirements
Operating Controls
Receiving the NewDritter
 TABLEOF CONTENTS(cont.)
" ')
Tïtle section

MAINTENANCE 5
Description
Drifter
Hoses
Hydraulic System
lnspectionof Parts
Introduction
LubricantSpecifications
DrillSteelThreadLubricant
FrontEndLubricating Oil(RockDrillOil)
Hydraulic Oil
Maintenance
AccumulatorReassembly ns
Instructio
DrifterDisassemblyInstructions
DrifterReassembly Instructions
Hydraulic RotationMotorDisassembly
Hydraulic RotationMotorReassembly
Inspection. Pressur€s,,'
of Accumulator,
ReversePercussion KitDisassembly Instructions
ReversePercussion KitReassembly Instructions

. ..
TROUBLESHOOTING 6
Introduction
Troubleshoot¡ng

RECORDSANDNOTES
MAINTENANCE 7

ì
J

Page2, SectionTC-Í, 1M6035

 InstructionManual 1M6035
Revision1 ¡NTRODUCTION SectionI
) uuly2z,1gg2 Page1 ot2

Alphabetical Index

T'¡fle PageNo.

List
Abbreviation 1
lntroduction 1
ReferenceMaterial 1
Equipment
Support Required 1

1. INTRODUCTION. 3. REFERENCE
MATERIAL.
Thisinstruction manualcontainsinforma- Thereference materialsrequired to oper-
tion for safety,operation,maintenance,ser- ate and/ormaintain
thedrifterarelistedinTa-
viceinformat¡on for the
andtroubleshooting bþ 2.
Hydraulic Drifter YH65A(hereafter
referredto
as dritter):
J 4. ABBREVIATION
LIST.
EOUIPMENT
2. SUPPORT REQUIRED.
Abbreviations listedinthismanualthatare
Thesupportequipmentrequiredto operate notcommon arelistedinTable3 withthe prop-
ancl/or
maintain is listed:in,Table,1.r
the,dritter er definition.

ïable 1. SupportEquipmentRequired

Item Requirements
or Specification
Air Requirements: Fornormaldrilling conditions,
a compressor havinga capac'
ity ot 22Oscfm (6.23ms/min.¡at 100psi (7.03kg/cm2).For
frontheadlubricationand holecleaning.
Hydrau
lic Requirements
.Harnmer
Operation at 1991 psi (140 kg/cm2).
29.27GPM (110Liters/Min.)

.DrillSteelRotation at 1991psi (140 kg/cm2).

11.89GPM (45 Liters/Min.)

Lubrication
Requirements Oilmistcontrolled (ondrillingmachine)-
fromlubricator
 Table2. ReferenceMaterial
ManualNo. Title of Manual
j
PL6035 DrifterModelYH65A.
PartsListfor Hydraulic

Table3. AbbreviationList
Symbol,or Term
Abbreviation, Meaning
bpm BlowsPerMinute
bhp BrakeHorsepower
ms/min. CubicMetersPerMinute
tr. Feet
gpm Gallons PerMinute
in. Inch
IR Ingersoll-Rand@
kg Kilogram
kg/cm2 Kilogram PerSquareCentimeter
lbs Pounds
lrtt Pound-Foot
lprn LitersPerMinute
L Liter,
L.H. Lett-Hand
ml Milliliters
mm Millimeter
mPa MegaPascals
M Meter
Nm NewtonMeter
ps¡ Pounds PerSquareInch
scfm Standard CubicFeetPerMinute

AII information,illustrations,and specilicationsin this manualare basú on the Íatest

inlormation availableat the time of publication. Product improvementis a continuing
goal at tngersoll-RanP. Designand specificationsare subjectto changewithout
noticeor obligation.

Portions usedin the preparation

of the information manualwastakenfrom
of thisinstruction
the originalForm4933 "YH65A Hydraulic Drittef', manual.
ins'truction

Page2, Section1, PL6035

InstructionManual tM603s
Revision1 SAFETY Section2
July 22,1992 Page1 ol 2

Alphabetical lndex
Title PageNo.
Introduction 1
SafetyFirst 1
SafetyPrecautions 1

1. INTRODUCTION.

This sectioncontainsimportantsafety in- DANGERIS USEDTO INDICATE

formationfor the HydraulicDritter YH65A THE PRESENCEOF A HAZARD
(hereafterreferredto as drifter). W}IICH WILL CAUSE SEVERE
PERSONALINJURYOR DEATHIF
THEWARNINGIS IGNORED.

2. SAFETYFIRST. AWARNING
WARNINGIS USEDTO INDICATE."
SAFETYFIRSTistheprimaryconcernfor THE PRESENCEOF A HAZARD
theprotection
of both,personnelandthedrift- WHICHCAN CAUSESEVEREIN.
er duringanyphaseof operation.Allperson- JURV OR DEATHIF THE WARN.
nelmustthoroughlyunderstand allsafetypre- INGIS IGNORED.
cautionsbefore,operating
or doinganymain.
tenanceworkon the drifter.
AGAUTION
CAUTIONISUSEDTOINDICATETHE
PRESENCEOF A HAZARDWHICH
(Table1.)
3. SAFETYPRECAUTIONS. WILL OR CAN CAUSE PERSONAL
INJURYOR PROPERTY DAMAGEIF
THEWARNING¡S IGNORED.
TheSafetyPrecautions listedinTable1 are
intendedto makeall personnel awareof the
dangers whileworking onor neara drifter.All
personnel mustuse commonsenseand a
good workingpracticewhile operatingand Noticeis usedto notifypeopleof in.
thisdrifter.Theprecautions
maintaining areof stallation;operation,or mainte-
a generalnatureandcannotcovereverypos- nanceinformation whichisimportant
siblesituation. butnothazard-related.
All personnel
mustunderstand the DAN-
GER,WARNING, CAUTION,and NOTICE ByunderstandingwhatDANGER, WARN-
usedthroughout the text of this instruction lNG,CAUTION, andNOTICEmean;andus-
manual,andon the SafetyLabelslocatedon ing goodjudgmentand commonsense;all
thedritter.TheDANGER, WARNING, CAU- personnelcanavoidinjuringthemselves
and/
TION,andNOTICEaredefinedas follows: or damagingthe drifter.
 Table1. SafetyPrecautions
.\
TO OPERATETHE HYDRAULICDRIFFERUNLESSYOU
1 . DO NOTATTEMPT :lì
,{
ARE THOROUGHLY FAMILIARWITH ALL THE CRAWLERGAUGES,CON.
TROLS,ANDFUNCTIONS.REFERTO THE SECTIONOFTHE CRAWLERIN-
STRUCTIONBOOK FOR DETAILEDINSTRUCTIONS.FAILURETO COMPLY
COULDRESULTIN BODILYINJURY.
ALWAYSWEARAPPROVEDHARDHAT SAFETYSHOES,SAFETYGLASSES,
WHENNEARA DRIFTERIN OPERA.
NOSEMASKAND EAR PROTECTION
TION.
KEEP HANDS,ARMS, LEGS AND CLOTHINGAWAY FROM ALL MOVING
PARTS.FAILURETO COMPLYCOULDRESULTIN BODILYINJURY.
STRIKINGBAR,COUPLINGS,
THE DRIFTER, DRILLSTEELSAND'BITARE
HOT DURINGTHE DRILLINGOPERAT¡ON.DO NOT TOUCHTHESEPARTS
WITHYOURBARE HANDS. WEARGLOVESTO PROTECTYOURHANDS
WHENYOUARE CHANGINGBITSOR STEELS.A SEVEREBURNWILL RE-
PARTSARETOUCHEDWITHBAREHANDS.
SULTIF ROTATING
KEEPALLHOSECONNECTIONSTIGHT.A LOOSEHOSECONNECTION NOT
ONLYCAUSESLEAKSAND POORPERFORMANCE, BUTMAYALSOALLOW
THEHOSETO COMEOFFTHE DRIFTER,WHIPAROUND,AND INJURETHE
OPERATOR IN,THEAREA;'
OR OTHER.PEOFLE
MAKESURETHATTHE PARTS-CtEANINGSOLVENTIS NON-FLAMMABLE,
WILLNOTHARMTHE SKIN,MEETSCURRENTSAFETYAND HEALTHSTAN.
AREA.
DARDS,ANDIS USEDIN WELLVENTILATED
7. DRYNITROGEN.ISTHE ONLYGAS PRODUCTTO BE USEDTO CHARGETHE .
DRTFTERACCUMULATORS. NEVERUSEOXYGENTOCHARGETHEACCU-
OFANOXYGENANDOILMIXTURE
IGNITION
MUI.ATORS. COULDPRODUCE
AN EXPLOSION,WHICH COULD SEVERELYINJURE PERSONNEL IN THE
AREA.
MAKESURETHEACCUMULATORS AREIN GOODCONDITION.MAKESURE
THE ACCUMULATORCOMPONENTS HAVENO CRACKSOR SIGNSOF EX-"
CESSIVEWEAR. WHEN PRESSUR'ZED, A DAMAGEDACCUMUI.ATOR
METAL
COULD BURST SCATTERING FRAGMENTSTHROUGHOUTTHE
AREAWHICHCOULDSEVERELY INJUREPERSONNEL.
BEFOREANY ACCUMULATOR
9. BE SURETO BLEEDTHE ACCUMULATORS
LY IS ATTEMPJED.
DISASSEMB

Page2, Section2, lM6O35

InstructionManual tM6035
Revision2 & SPECIFICATIONS
DESCRIPTION Section3
December 12,1994 Pagef of 5

AlphabeticalIndex

Title PaoeNo.
Description 1
Introduction 1
Specifications 4

1. INTRODUCTION. er fronthead.The hydraulicrotationmotorpro-

vides smooth,powerfulrotation,especiallyat
This section providesa descriptionand low rotationspeeds,andassuresthe operator
specifications of the HydraulicDrifterYH65A of positiverotation control uhder all drilling
(hereafterreferredto as drifter). conditions.

2. DESCRIPTION. (Figure1) Sincehammeractionanddrillsteelrotation

are independently controlled, the best combi-
The hydraulicdrifteris a valved,hydrauli- nation of individualcontrol of both functions
cally operatedhammerdrillthat incorporates can be selected forthe most etficientdrillingin
an integral,,independently"=controlled;.. hy-', a pañicular formation.
draulically-powered rotationmotor to rotate Sincethe drifteroperateson hydraulicfluid
the drill steeland bit. power, instead of air, its operationis unaf-
The drifteris capableof drilling2-112to4 fectedbyaltitude.ln addition,thereis no noise
in.(65to 100mm)diameterholesin alltypesof from air exhausland no fog buildupin working
rock formations. lt is especiallysuitablefor areas:.
pipelinework,drillingverticaland angleblast Theonlyair requirements forthedrifterare:
holesin quarries, andon anyconstruction jobs for hole cleaningand frontheadlubrication.
wherelargevolumerock excavationsare re- The drifteris equippedwith a3l4 in- (19mm)
quired. outside diameterblower tube which carries
,Sincethedrifteris hydraulic, thereare only hole cleaningair fromthe inletconnectionin
twomovingpartsto controlhammeraction:the the backhead,throughthe centerofthe drifter,
pistonand the pistonvalve. The pistonpro- strikingbar,drill steeland bit to the bottomof
videsthe impactforcewhichis transmittedto the holewithoutcontactingany of the internal
the drill steel. The valvealternatelyswitches parts of the drifter.
pressurefromsupplyto exhaust. This action
producesa high frequencyreciprocationof ACAUNON
2600cyclesperminute.The pistonstrikesthe
strikingbar on each forward(power) stroke, THE DRIFTERACCUMULATORS
thus,transmitting the blowenergythroughthe REQUIRE CHECKING EVERY 250
steelto the bit at 2600 blowsper minute. HOURS OF OPERATION. REFER
TOSECTION 5, PARAGRAPH 19.
The hydraulioally-powered rotationmotor
is independently controlled and is designedto Thedrifterusestwonitrogen-charged dia-
providecontinuous drill steelrotation-fonruard phragmaccumulators to dampen vibrations in
or reverse.The motorconvertshydraulicfluid the supplyandreturnhoses.Thesupplyline
to rotationpower and transmitsthe rotation (highpressure) accumulator mustbe charged
powerto the spurgeartrainhousedin the drift- to 853 (60kg/cm2).The returnline (low
psi
 !q¡
(ft
o
¡t
(D
o
o
o
t
-gt
=
o)
e
ût
C'I

\-^

\ 4 0
42
4
44

29

- Exploded
DrifterYH65A
Figure1.Hydraullc (Con't.)
lllustration
 Ç-sz

!
o
, ( o
r o
-(t
: U '
ì oo
.i o
r ã
, .('
: , 3
ì c D
; Þ
';l q
(|l
t
Figure2. HydraulicDrlfier- Explodedlllustration
:
,i
a
 pressure) mustbechargesto 57
accumulator ableforthe drifter.This optionhelpsin the re'
psi(4 kg/cm2).Anaccumulator
chargingkitis coveryof jammedbits and rods in fractured
itemwith
furnishedas a standardaccessory ground.
"t)
thehydraulicmachine.
Thedrifteris designedwithchuckpartsto
accommodate a G-splined bar.A strik-
striking Do not use the reversePercussion
ingbaris notfurnishedasstandard equipment continuouslyfor over 10 to 15 sec-
withthedrifter.Therequired barmust
striking onds.
be speciallyordered.Referto Table3 for the
partnumberof the strikingbarsavailablefor
ofthe
usewiththedrifterandthespecifications 3. SPECIFICATIONS.
strikingbars. for
Tables1 through5 listthespecifications
An optionalreversepercussion
kit is avail- the drifter.

Table1. Drifter
u.s. (Metricl
lrlat \Â/ainht 4 1 9t b . (1e0kg)
OverallLength(lessstrikingbar) 40.55in. (1030mm)
DrillHammer HydraulicOperating Pressure 1991psi (140kg/cm2)
HammerBlowsPerMinute(variable). . . 2600bpm 2600 bpm
Diameter l-'lose.
of InletHydraulic. 3/4 in. (19 mm)
Diameterof ReturnHydraulic Hose 314in- ( 1 9m m )
Diameterof BlowerHose 314in. (19 mm)
Diameterof FrontEndLubrication Hose...... 3/8 in. (9.5mm)
SupplyAccumulatorChargePressure''(Drift
er) 853 psi 1ooks/cml)
ChargePressure (Dr.ifter),
Return Accumulator, . 57 psi (4 kg/cmz)
SupplyAccumulator ChargePressure(Reverse
Þarnr rcainn\ 853 psi (60 kg/cm2)
(Reverse
ChargePressure
ReturnAccumulator
Percussion) 853 psi (60'kg/cm2)
at 1991psi
NOTIGE: Thisdatabasedon hydraulicsupplyoÍ 29.27gpm (110 liters/min)
(140kg/cm2).

2.
u.s. (Metric)
Hoses(2)..
of Hydraulic
Diameter 112in. (12.7mm)
Rraka F-lnreennwcr 1 8B H P (13.4kw)
at Chuck.. .
StallTorque 332 lb-ft (a50Nm)
Speedat Chuck(NormalOperating
Rotation
Snaadl 0 to 200 0 to 200rpm
MaximumChuckRotation
Speed (Free rpm 200rpm ì
Speed) 200 rpm ,/

supplyat 11.89gpm(45liters/min.)
NOTIGE:Thisdatabasedon hydraulic
1991psi(140kg/cmz).

Page 4, Section 3, 1M6035

 (Furnishedonlywhenspeciallyorderedì
Table3. Striki r BarSpecifications
Strikinq Bar Strikinq Bar Specifications
SB38YH65 6-Spline Drive
(51780e8e) T38 Thread(Male)
For 314in. (19mm)DiameterBlowerTube

SB4sYH65 Sameas aboveexceptwith T45 Thread(Male)

(51781003)
r SB45SYH65RP 6-SplineDrive
(51781128) T45 Thread(Male)
For 314in. (19mm)DiameterBlowerTube
NOTfGE: Use 8{igit part number (51780989,51781003,or 51781128)when
orderingthe requiredstrikingbar.
r NOTICE: This strikingbar is for use ONLYwith the reversepercussionoption.

Table 4. Steel (GoupledType)

Steel Size ThreadSize
1-112in: (38mm)HollowRound 1-112in. (38mm)T38
1-1 12'in,(38mm)Flollow,fiound.:. 1-1/2in. (38mm).,T45

Table5. Shipping lnformation

u.s. (Metric)
Net Weightof Drifter 419 lbs (1e0ks)
Shinninn Weinht 439 lbs (1eeks)

Page 5, Section 3, 1M6035

 ':ç
I

it
lnstructionManual tM6035
Revision2 OPERATION Section4
December 10,1993 Page1 of5

Alphabeticallndex
Title PageNo.
Air Requirements 2
BasicOperatingPrinciples 2
DrillPistonReciprocation 2
DrillSteelRotation 2
Charging the DrifterAccumulators 3
Connecting the StrikingBarto the Drifter 4
Drilling
Procedures 5
ïps
Drilling 5
BitCare 5
DrillSteelCare 5
Suggestions for Drillers 5
HosesandFittings 2
Requirements
Hydraulic 1
Introduction 1
Lubricatíon
Requirements 2
Operating
Controls 3
Receivingthe New Drifter 1

1. INTRODUGTION. REQUIREMENTS.
3. HYDRAULIC
The hydraulicpowerrequiredto operate
Thissectionprovidesairrequirements, op thedrifterisdividedintotwoindependentfunc-
erating principles,hydraulicrequirements, tions:
andlubricationrequirements of the Hydraulic
DrifterYH65A(hereafterreferred to asdrifter). a. HammerOperation- The hydraulic
systemmustbecapableof supplying hydraulic
ffuidto thedrifterat a rateot 29.27gpm (110
at 1991psi(140kg/cmz).
liters/min.)
2. RECEIVING THENEWDRIFTER, b. Drill Steel Rotation- The hydraulic
systemmustbecapableof supplying hydraulic
fluidtotherotationmotoronthedrifterat a rate
Uponreceiptof a newdrifter,checkthe of 11.89gpm(45 liters/min.) at 1991psi(140
driftermodelnumberto seethatit agreeswith kg/cm2).
thepartscatalog.Attentioninthisareawillas-
surethatthe correctrepairpartsare ordered Ingersoll-Rand@ hydrauliccrawter ma-
whenneeded. chinesaredesignedto usethishydraulic drift-
er. Basically,its hydraulicsystemcontainsa
Beforereleasing a newdrifterfor service, fluid reservoir, whichstores a supplyof hy-
removeall the shippingplugsfromthe ports. draulicoil;pumps,whichdevelop anddeliver
These plugsare usedto keepdirtout of the therequired hydraulic oilpressureandflowto
equipment duringhandling andshipping" operatethedrifteranditsrotation motor;filters
for removingparticulatecontaminationfrom c. ForwardRotationHydraulicHose-112
theoilsupply; controI valvesto initiatehammer in. (12.7mm)diameter.
actionand controlthe speedand directionof d. ReverseRotationHydraulicHose-112 ')
therotation motor;andan oilcoolertomaintain in. (12.7mm)diameter.
the entire system at an optimumoperating e. Front End Lubricat¡onHose - 3/8 in.
temperature.An arrangement of hosesand (9.5 mm)diameter.
fittings carries the oil from the reservoir
throughthe pumpsand regulating controlsto
the drifterand rotationmotorand backto the
reseruoir throughthe oil cooler.
PRINCIPLES.
7. BASICOPERATING
REQU¡REMENTS.
4. LUBRICATION Theoperationofthe drifteris basedontwo
independent basicoperatingprinciples:
(a)the
The drifterusesan oil mistto providelubri- principlethat causesthe pistonto reciprocate
cationto allcriticalpointsin the frontend of the (i.e.,hammeraction)and (b)theprinciple gov-
drifter.A 3/8in. (9.5mm)diameterhose,con- erningthe drillsteelrotation.
nectedto the drifter,carriesthe oil-ladenair
from a lubricator(partof drillingmachine)to
thefrontendof thedrifter.Theamountof lubri- 8. DRILLPISTONRECIPROCATION.
cationprovidedis controlledby the lubricator
locatedon the drillingmachine. The drifteris a valved hydraulicdrill. The
valvecylinderassembly andcylinderlinercon-
vert hydraulicfluid pressureintoetficientham-
5. AIR REOUIREMENTS. meraction. The piston withinthecylinderliner
providesthe,impaetforce.whichis'transmitted','
The air requirements forthe drifter.arefor' to thedrillsteel:Thevalvealternatelyswitches-'
front end lubricationand hole cleaning. For pressurefrom supplyto exhaust.This action
normaldrillingconditions,a minimumflow of producesa highfrequencyreciprocating ac-
10 scfm(.28ms/min.)at a pressure.of 100psi tion'of 2600 cyclesper minute. The piston
(7.09 kg/cm2)is requiredfor lubricationand strikesthe strikingbar on'eachforurard(pow-
the remaining airfor holecleaning.-'
er) stroke,'and through:thestriking'barand.':
steel,drivesthe drillbit intothe rock at 2600
blowsper minute
6. HOSESAND FITTINGS.
Onlyqualityhosedesignedespecially for 9. DRILLSTEELROTATION.
rockdrillserviceshouldbe used. lt shouldbe
constructedwith an outer coveringwhich re- Thedrifteris designed withan independ-
sistsabrasivewearand havea workingpres- ently-controlled,hydraulic-powered, rotation
suresafetyfactorof at least4 to 1 in relationto motorthatprovides continuous drillsteelrota-
burst. -
tion forwardor reverse.
Hosesand hosefittingsmustbe in good Themotorconvertshydraulic fluidto rota-
condition,andthe fittingsrnustbe kepttight. tionpowerandtransmits therotationpowerto
Thefollowingliststhehosesrequiredto op- a drivegearwhichispartofthespurgeartrain,
eratethedrifterandthediameterof eachhose: housedin the drillfronthead:Thus,as the -
drivegearis rotated,the meshing chuckgear
a. InletHydraulic Hose-314 in. (19 mm) and matingchuckdriverfollowthe rotation.
diameter. Splineswithinthechuckdriver matewiththose j
b. ReturnHydraulicHose - 314in. (19 in thestrikingbar,therebyimparting the rota-
mm)diameter. tionthrough thedrillsteeltothebit.

Page2, Section 4, 1M6035

10. OPERATING
CONTROLS,
Hammeraction, drillsteelrotation
andfeed
are controlledseparatelyand each must be MAKE SURE THE ACCUMULA-
regulatedfor optimumresultsin the drilling TORSARE IN GOODCONDITION.
conditions encountered. Alloperating controls MAKE SURE THE ACCUMULA.
for the dritterare locatedon the drillingma- TOR HOUSINGHAS NO CRACKS
chineconsole.Referto the operationsection OR SIGNSOF EXCESSIVEWEAR.
of thedrillingmachineinstruction bookfor de- A DAMAGED ACCUMULATOR
taileddescriptions and instructions covering COULDRUPTUREAND SEVERE.
all operatingcontrolsand gauges. LY INJUREPERSONNEL.
To chargethe drifter accumulators,pro-
11. CHARGINGTHE DRIFTËR ceed as follows:
ACCUMULATORS. (Figure1) a. Usinga spannerwrench,removethe
protectivecaps from the accumulatorcovers
The dritteruses nitrogenaccumulators to on bothaccumulators.
dampenvibrationsin the pressureand return b. Loosenthe accumulatorvalve slightly
hoses.Beforeoperatingthe drifter,bothaccu- (about1/8of a turn).
mulatorsmustbecharged.RefertoSection3,
Table1 for chargingrequirements! c. Attachthe charge valve assemblyto
the accumulator, turningthe assemblyhand
tight.
d, Connectthe nitrogenbottlehoseto the
chargevalveassemblychargingport.
e. Make,surethe discharge.valveon the
Localcodes andlocalsupplyandre- side of thechargingvalveassemblyis closed.
f¡ll requirementsprohibitIngersoll- (Turningclockwiseclosesthe valve).
Rand@ supplyingnitrogengascylin- f. Turn the charge valve on top of the
ders. chargingvalve assemblycounterclockwise,
An accumulator (Figure'
charging.kit 1)'is to openthe accumulatorvalve.' Openlvalve'.'
furnished as a standardaccessory itemwith threeto fourturns.
thedrillingmachine.
Thefollowing DANGER Precautions must
be observedwhenchargingthe dritteraccu-
mulators: Failureto open the accumulator
tofourturns
valvea fullthree mayre-
sultindamageto the sealwhenthe
nitrogenbottlevalveis opened.
DRY NITROGENIS THE ONLY
GAS PRODUCTTO BE USEDTO g. Slowlyopen (turncounter+lockwise)
CHARGETHE DRILL ACCUMU- the valveonthe nitrogenbottleandallowthe
LATORS. NEVER USE OXYGEN pressureto build. Closethe valvewhenthe
TO CHARGE THE ACCUMULA. pressurereachespropersetting.lf the pres-
TORS. IGNITIONOF AN OXYGEN surebecomes higheçadjustthepressureby
AND OIL MIXTUREIN THE ACCU- usingthe dischargevalve on the charging
MULATORCOULDPRODUCEAN valveassembly.
EXPLOSION,WHICHCOULDSE- h. Closethe accumulator valveby turning
VERELYINJUREPERSONNEL IN the charging valveon the chargingvalveas-
THE AREA. sembly.

Page3, Section4, lM6O35

 'ì

1. ChargingValveAssembly
2. Hose(withfittings)

Figure1. AccumulatorChargingKit

i. Open'the discharge" valveito'release'

gas in the chargingvalve assemblyand the
hose.
j. Removethe nitrogenbottlehose. It is veryimportant thatallthreaded
accessories be properlylubricated
k. Removethe chargingvalveassembly.' andcaredforatalltimes;Properlu-
brication willresultin longerpartlife
l. Tghtenthe accumulator valve.Torque andwill simplify threading and un-
the valveto 22lb-ft (30 Nm). threading of allconnections. Make
surethat all threadsarecleanand
m. Replace the accumulatorprotective free of dirt andcoatedwith a high
cap. pressuregrease(lngersolF-Rand@
n. Followthe sameprocedureto charge Drill SteelLubricant) or equivalent
the secondaccumulator.The drifteris then each time they are couPledor
readyfor service. stored.

b. Removethe two chuckend cap bolts

(72) andnuts(73).
THESTRIKING'BAR
12. CONNECTING c. Removethe chuckendcaP (69),caP
(Section3; Figure2)
TOTHEDRIFTER. liner(70),ando-ring(71).
d. Makesurethe strikingbaris equipped
a. Make sure all striking bars and witha sealandthelipof thatsealis facingthe ,)
are properly
accessories
threaded greased. strikingbarsplines.

Page4, Section4,1M6035
 e. Coatthe strikingbarwithcleanoil and forat alltirnes.Steelshavingstripped threads,
inserttheshankendofthestriking barintothe cracks,or severe galling mustnot be used.
chuck(68). Also,careshouldbetakenwhiledrillingnotto
f. Insertthechuckendcapliner(70),o- bendsteelor gallthreadsdueto misuse.
ring(71)andchuckendcap(69)andsecure b. Bent steel produces unnecessary
withtwo chuckend cap bolts(72)and nuts stresses andaccelerates wearonalltronthead
(73). components.Bentsteel and severethread
gallingcan be avoidedif the followingsteps
13. DRII.LING
PROCEDURES: aretaken:
Detailed
operatinganddrillinginstructions 3. Besurethatthe steelisbottomed in
arecoveredintheoperation
sectionofthedrill- the striking bar,couplings, andbit.
ingmachine instruction
book. 4. All threadsmustbe in goodcondi-
tionandwellgreased.
14. DRILLING
TIPS. 5. Alwaysdrillwith asharpbit(nomore
To ensuremaximumoperatingefficiency, than1/8in. [3.175mm] flaton carbides).Dull
thefollowing
suggestions
shouldbeobserved. bitscauseexcessive pounding andunneces-
sary stresseson all threadsanddrifterfron-
theadparts-
15. SUGGESTIONS
FORDRILLERS.
6. Approach the rockat reducedfeed
a. Neverpoundonstucksteel.Nothingis pressure, positioncarefully,
andcollarhole.
accomplished therebyandthe drifterand bit Oncebitis collared in rock,fullfeedpressure
maybepermanently damaged intheprocess. maybe applied.
b. Never,strikethedrifter,with'tools:: 7. Alwayskeepsufficient1"scl.:prês-
c. Everyeffortmustbemadeto keepdust sureon steelsystem.Insutficient feed pres-
anddirtfromenteringthe drifter.Preventing surewillcausejointstoloosenandthreadswill
impurities fromenteringthe drifterpaysoff in be damaged.
improvedoperationand reduceddown-time 8: Always maintain alignmentbe-
forrepairs.. tweenthedrifterandthe hole.',- ,
d. Alwaysbe sure the drifterfront end
partsarewelllubricated. Oilmustbedetected
on the strikingbarfor properrotationcompo- 17. BITCARE.
nentlubrication. Adjusttheoilreservoir sothat
thestrikingbaralwaysshowsanoilfilm.Refer Forlongbit life,theinstructions
as listedin
to drillingmachineinstructionmanual fortime Paragraph 16covering "DrillSteelCare"must
intervals for checkingoil reservoir.Keepthe alsobe applied to thebit. In addition,thefol-
lubricator wellsuppliedwithoil at alltimes" lowingstepsmustalsobe taken:
e. Alwayskeepthedrifteraligned withthe a. Neverallowthebit to becomeplugged
drillsteelandhole. Thisassuresstraightand with loosecuttings.Blow the holecontinu-
trueholesthatgoinfast.Mostimportantly, this ously.
preventsunnecessary wear and damageto b. Neverforce orbroachthebitintoa hole.
thedrill.
c. "Rattle"bitsfromsteelusingthe drifter
f. Alwaysusethecentralizer to guidethe hammeractionwithlightfeedpressure andno
drillsteelduringthedrillingoperation. rotation.Usea Stillson or bitwrenchto remove
the bit. Neverstrikethe bit witha hammer.
16.DRILLSTEELCARE.
d. Bitcarbides shouldneverbeallowed to
a. lt is veryimportantthatthethreadsof flattenanygreater than1/8in.(3.175mm)be'
thedrillsteelbe properly
lubricated
andcared tweenregrinding intervals.
Page5, Section4, 1M6035
)

j
InstructionManual tM6035
Revision4 MAINTENANCE Section5
December 12,1994 Page1 of18

AlphabeticalIndex
Title PageNo.
Description 1
Drifter 2
Hoses 1
HydraulicSystem 1
lntroduction 1
Lubricant Specifications 2
DrillSteelThreadLubricant 4
FrontEndLubricatingOil (RockDrillOil) 2
HydraulicOil 2
Maintenance 4
Accum ulatorReassembly Instructions 12
DrifterDisassembly Instructions 4
DrifterReassembly Instructions 15
Hydraulic RotationMotorDisassembly I
Hydraulic RotationMotorReassembly 13
Inspectionof Accumulator Pressures 18
Inspectionof Parts 10
ReversePercussion KitDisassemblylnstructions'
. .,.. . 10
ReversePercussion KitReassembly lnstructions
... . 14

1. INTRODUCTION.. 3. HYDRAULIC SYSTEM.

Cleanhydraulicoil is the life-bloodof the
Thissectionprovides information ondrifter drifter. Withoutan adequate supplyof clean
disassembl¡ inspectionof parts,assembly in- oilof properweightatthecorrectpressure and
structionsand lubricantspecifications of the temperatu re,the drilI cannotoperateproperly.
Hydraulic DrifterYH65A(hereafter referred to a. Makesurethehydraulic oilis keptfree
as drifter). of dirt. Checkthatall filtersareproperlyin-
stalledandservicedregularly.
b. Hydraulic oilconforming to the specifi-
2. DESCRIPTION. cations as outlinedin thedrillingmachines in-
structionmanual.
The driftermustbe includedin a definite c. Maintainthe correctlevelof hydraulic
preventive maintenance'schedule to assure fluid in the hydraulic'oil reservo¡r to prevent
topperformance andlong,efficientservicelife. overheating andfoaming.
Theoperating performance is directlydepend- d. Makesurethesystemheatexchangers
ent uponthecondition in whichthäworking or radiator typeoilcoolersarekeptfreeof dirl
partsandinteractingsystemsaremaintained.
Thefollowing areasmustbe included ina pre- 4. HOSES.
ventivemaintenance "check-list'toassurere- a. Neverallowthehydraulicsystem hoses
liableandconsistent drifteroperation. to remainuncapped or exposedat any time.
Alwayscap hosesand fittingsimmediately b. Makesureall hosesarecleanbefore
themto any partof the hydraulic
anypartof the hydraulic connecting
whendisconnecting
system. system. .\
f: Scheduleregularperiodsfor checking ' .ì
c. Makesureall hosesare cleanbefore
connectingthemto thedrifter. frontendlubrication.Do notwaitfor physical
d. Alwaysusethepropersizehoses. evidence of poorlubrication.
e. Makesure all hoseconnections are g. The drifterfrontheadshouldbe taken
arein
tightandallhoses,fittings,andadapters apart periodically,cleaned,and pads in-
top-notchcondition. spectedfor wearanddistortion.
h. Hydraulic sealsando-ringsweardur-
ing normaloperation.Hydraulic oil leakage
may be an indicationthat sealsor o-rings
needto be replaced.
A LOOSE HOSE CONNECTION
NOTONLYCAUSESLEAKS,BUT properly,
i. lf a drifteris not operating in-
THE HOSE MAY COME COM- vestigate the problem as describedin Section
PLETELYOFF THE TOOL,WHIP 6 covering'Troubleshooting".
AROUNDANDCAUSEINJURYTO
THEOPERATOR.
6. LUBRICANTSPECIFICATIONS.
5. DRIFTER.
The followingparagraphs outlinethe lubri-
a. Neverallowthe hose adapterson the for
cantsrequired the drifter.
driftertoremainuncaPPed.: Dirtcontamination,
of the drifterwill causeacceleratedwearand'
drifterfailure. 7. HYDRAULIC OIL.
b. Be certainthat the strikingend of the
strikingbar is square,flat and freeof all sharp Referto theinstruction manualforthedrill-
edges.:Thestrikingbarshouldbe repaired'or . " ing machinefor the specifications of the hy-
discardedif cracked;peened,or crowned; draulicoil.
c. Be surethatthe holein the drillsteelis
open.
d. Excessively dullbitscauseslowdrilling 8. FRONTENDLUBRICATING OIL.
and excessivepoundingwithinthe drifter.Al- (Rock Drill Oil)
wayschangethe bitwhenthereis an apprecia-
ble dropoffin drillingspeed,or anynoticeable
changein the actionof the drifter. ACAUTION
e. Becertainthatthedrifterfrontendparts
are well lubricated.Oil must be detectedon KEEPTHE ROCKDRILLLUBRI-
the strikingbar for properrotationcomponent CANTCLEANAND FREEFROM
lubrication.The amountof lubricatingoil pro- ALL FOREIGN MATTER TO PRE-
videdis controlledby air and oil regulatorslo- VENTDAMAGETO THE INTER-
catedatthedrillingcontrolconsole on the drill- NALPARTS.
ing machine. Adjustthe oil flow so that the
strikingbaralwaysshowsan oil film. Referto tngersotl-Rand@ offersa completelineof
drillingmachineinstruction manualfor timein- rockdrilloil formulated to providemaximum *,
)
tervalsfor checkingoil reservoir.Keepthe lu- perforrnance in all typesof rock drill equip
bricatorwellsuppliedwithoil atalltimes. Keep ment.Theseoilsexceedtheoilspecifications
the lubricatingoilfreeof dirt. listedin Table2.
Page 2, Section 5, 1M6035
 The rockdrilloil usedin the air linelubrica- siveto bothsteelandbronze,andcontainlittle
tor mustbe a wellrefinedpetroleum lubricating or no sulphur.
oil. lt mustbe suitablycompounded to provide
the specifiedconsistencyand film strength, Ingersotl-Rand@ RockDrillOilsareformu-
and be furthercompoundedto providethe latedto providemaximum performancein all
specifiedsteamemulsionnumber,whichis re- typesof rockdrillequipment. UseTable3 for
quired to provide satisfactory lubricant. selectingthe correctviscositygradeto meet
Thoughthe composition of the "filmstrength" your requirements andTable4 for selecting
additiveis notspecified,it mustbe non-corro- the correctrockdrilloil partnumber.

Table2. Rock Drill Oil Specifications

Characteristic Test Below 20oF 20oFto 90oF Above90"F

Procedure (-7"C) (-7'C to 32'C) (32"C)
Viscosity:
SUSat 100"F(38"C) ASTM-D2161 1 7 5m i n . 450 min. 750 min.
SUSat 210"F(99"C) ASTM-D2161 46 min. 65 min. 85 min.
cST at 104'F(40'C) ASTM-D445 37 min. 105min. 1 6 0m i n .
cST at 212"F(100'C) ASTM-D445 6 min. 1 1m i n . 16 min-
PourPoint,oF(oC)max. ASTM-D97 -100F -100F 00F
(-23.C) (-23.C) (-18"C)
FlashPoint,oF('C) min. ASTfU-D92 3700F 400"F 450"F
(188"C) (204"C) (232.C)
lndex,min.
Viscosity, .,
ASTlut=-D227"0 90 90 90,
Steam-ErnulsionNo: min; ASTM:-193ffi5 1200 1200 1200
Consistency Stringy Stringy Stringy
FalexLoadTestlbs (kg)[m¡n] ASTM-D2670 2000lbs 2000lbs 2000 lbs
(e07kg) (e07ks) (e07ks)
TimkenE.P.Testlbs (kg)[min] ASTM-D2782 30 lbs 30lbs 30 lbs
(1aks) (14kg),' (14 kg)'

Table3. SelectionChart

TypicalOperáting Below20oF 2OoFto 90oF Above gOoF

Conditions (-7"c) (-7"C to 32"C) (32"C)

100-150psi (7.03- 10.5kg/cm2) Light Medium Heavy

Table4. RockDrillOil PartNumbers

Grade 1 Gallon 5 Gallon 55 Gallon
Light 51378701 51378727 51378743

Medium 51378693 51378719 51378735

Heavy 51378784 51378792 51378800

Page3, Section5, 1M6035

9. DRILLSTEELTHREADLUBRICANT.

It is very importantthat the threadsof all WHENUSINGANY SOLVENTTO

strikingbars,drillrods,couplingsand bits be CLEAN PARTS, MAKE SURE ]
properlylubricated and caredfor at alltimes. THAT ¡T MEETS CURRENT
Properlubrication will resultin longerlifeand SAFETY AND HEALTH STAN-
willsimplifythreading andunthreading drillrod DARDSAND THATIT IS USED'IN
joints. AN AREA THATIS ADEQUATELY
VENTILATED.
Usea goodmolybdenum di-sulphidetype
threadgreasesuclras (lngersoll-Rand@ Drill
Steel Lubricant)or equivalent. (Refer to 11. DRIFTERDISASSEMBLY
PL6035"PartsListForHydraulicDrifterModel INSTRUCTIONS.(Figures 1 A 2)
YH65A",for paü numbers.)
a. Placethedrillguidein a horizontalposi-
tion.
b. Feedthe drifterdowntheguideuntilit is
in the mostaccessibleposition.
10. MATNTENANCE. c. Disconnect, plug,andtagthe blowerair
hose,front end lubrication hose,supplyand
Toensuremaximum lifeandtop perform- returnhydraulichoses,and forwardand re-
anceoftheequipment, it is necessary thatthe verserotationhydraulichoses.
maintenance bemadebeforeserious damage d. Installcapson the hosefittingsto pre-
octurs.ltis important,to
becautious whêfl pêr; ventdirtfrom.enter¡ng the,drifter..
forming'any work''A general
service knowl'"' e. Removethe nuts and bolts whichse-
edgeof thesystemancl/or components is im- plate,andusea
curethedriftertothemounting
portantbeforethe removalor disassembly of lift
suitablehoistto the drifterotf the mounting
anycomponents. Thefollowing is a listof ba- plate.
sicprecautions thatmustalwaysbe,observed:
f. Takethe drifterto a clean'workareato ,
a. Neverattemptmajorworkonthedrifter disassemble it.
inthefield.Thedriftermaybeinworsecondi-
tionaftermajormaintenance wastriedin the
fieldthanbefore.Sendthedriftertotheshop.
THE DRIFTERMUSTBE PLACED
b. Cleanthe exteriorof the drifterbefore INA HOR¡ZONTAL POSITIONAND
tearingit down. FIXED BY BOLTS ON A WORK
BENCH FOR DISASSEMBLY. A
c. Usea softmetal,plastic,orwoodham- DRIFTER POSITIONED VERTI.
merfor drivingtheheavierexteriorparts. CALLYCOULDFALLANDCAUSE
A SEVERECRUSHINGINJURYTO
parts
d. Handlepartscarefully.Hardened PERSONNEL.
droppedon a hardsur-
rnightchipor break.if
face. WHEN USINGANY SOLVENTTO
CLEAN PARTS, MAKE SURE
e. Cleandisassembled partsin a solvent. THATIT MEETSCURRENTSAFE.
Probeportsinthebackhead, housing, housing TY AND HEALTH STANDARDS
liner,drivegearcover,etc,to loosenandre- ANDTHATIT IS USEDIN AN AREA i

moveforeignmatter.Placethesmallpartsina THAT IS ADEQUATELYVENTI- .¿

cleancontainersotheywillnotbecomelost. LATED.

Page4, Section5, 1M6035

 38

4I

"d
\ J \

44

!
0t
GI 29
o
.('l
@
o
I
o
o
T
J¡ 27
= 28
o)
o
.f¡t
(,l
Figure1. HYDRAULIC YH65A- Explodedlllustration
DRIFTER
!
0t
G¡
o
.9
Ø
o
o
õ'
:'
-(rl
=
,t'l
o)
o
C.t
(¡

YH65A- Explodedlllustration
DRIFTER
Figure2. HYDRAULIC

'., 1)
\.¡*"
 1. Loosenand removethe two chuck 14. Using both hands, pull the piston
end bolts(72)and nuts(73). (33),valve(32),valveguide(31)and cytinder
2. Loosenthe four through-boltnuts backliner(27)the restof the wayoutofthe cyl-
(82). inder.
3. Loosentheeightbolts(44)whichat- 15. Usingoneof the coverbolts(62)to
tachthe accumulator insertinto the gear shaft (58),pull the gear
assemblies to the cylin-
der(221. shatt(58)outof thegearbox(50).Supportthe
idlergear(56)withtheotherhandsothat ¡tw¡ll
4. Loosenthe backheadgland (14) not dropwhenthe gearshattis pulledout.
withan openend wrench.Pullout the back-
16. Separatethegearbox(50)fromthe
headglandand blowtube(19)in one piece.
cylinder(1)with a plastichammer.
ACAUTION 17. Set the gear box (50)on its chuck
side. Fromthe backheadsideofthegearbox,
BE EXTREMELY
CAREFULWHEN use a hammerand suitablesteelbar to drive
REMOVINGTHE CHUCK END the drivegear (54)and bearings(55)from the
CAP,CHUCKANDSTRIKINGBAR. gear box.
THESE PARTSMAY FALLAPART 18. W¡ththe gearbox (50)on a suitabte
ANDCAUSEINJURYTO PERSON- fixture(cylinderside down),usea hammerand
NEL. appropriate dritt to drivethe frontliner(34)out
of the gearbox.
5. Removethe chuck end cap (69),
chuck(68)and strikingbar at the sametime, 19. W¡ththe gearbox (50)on a suitable
beingcarefulnot to dropany of the parts. workbench(cylinderside up), usea hammer
and appropriate drifttodrivethe bushingoutof
6. Unscrew andl remove,the.' four the gear.box,.
through-öolt nuts (821 and pull the four
through-bolts(80) out of the dr¡fter. 20. Unscrewthe eight bolts(44) which
holdthe two accumulators to the cylinderand
7. Usinga plastichammer,driveotfthe removethe accumulatorsfromthe cylinder.
chuckend (65).
8. Pullthe chuckdriver(63)out of the
gearbox (50).
9. Unscrewthe four capscrews(49) BESURETO BLEEDTHEACCt'-
whichholdthe hydraulic
motor(45)to thegear MULATORSBEFOREANYACCU.
box (50). MULATORDISASSEMBLY
IS AT.
10. Pullthe hydraulicmotor(45)out of TEMPTED.
the gear box (50). 21. Putthe accumulator in a vise and
11. Unscrewthe fourbolts(62)and re- with a spannerwrenchremovethe cap (42)
movethe cover(60)and o-ring (61). fromtheaccumulator cover(38).
12. Use two woodenblocksto support 22. Loosenthe accumulator valve (40)
thecylindersothatthe backhead (1)canbe re- slightlyto bleedthegasfromtheaccumulator.
movedwith a plastichammer. 23. Unscrewthe cover(38)fromtheac-
13. Fromthe chuckend of the drifter. cumulator body(37).
strikethe frontsudaceof the piston(33)with a 24. Removethe diaphragm(39) from
hammerandplasticdrift.Drivethepiston(33), the accumulator body(37).
valve(32),valveguide(31)and cylinderback 25. Removethetwoseals(26)fromthe
lineç(27)out of the cylinder(1) untilthey can cylinder liner,seals(29,30)fromthebackliner
be pulledthe restof the way out by hand. andsealwiperring(63)fromthefrontliner.

Page7, Section5, lM6O35

 c. Unscrewthefour bolts(16)and l¡ftthe
valvehousing(12)straight
up.
=ì
Donotremove linerun-
thecylinder
lessserviceis requiredonthe liner.
26. lf necessaryto removethecylinder the pins,springs,
lf done carefully,
liner(25),insertanappropriately
sizedtoolinto balanceplateand valvewill remain
the cyfinder (22)anddrivethe cylinderliner on the valveplate.
(25)outwitha largehammeror press.
d. Carefullyremovethe seal(22)fromthe
valvehousing(12).
e. Removethetwo pins(11)and springs
Donotremoveanyof the bushings (10)fromthe balanceplate(9).
unless theyrequire servicing.
f. Removethe balanceplate (9), valve
27. Placethechuckend(65)on an ap- (8),and innerandouterfaceseals(24,25).
propriatefixtureso thatthe bushing(67)can
bedrivenoutfromthechucksideofthechuck g. Lift the valveplate (7) away from the
end. geroler(5).
28. Removethechuckbushing (67)and h. Carefullyremovethe o-ring (23)from
cap liner(70)¡f necessary. the valveplate(7).
¡. Liftthe valvedrive(6) outof the geroler
(5).
ROTATION
12. HYDRAULIC. MOÏOR j. Removethegeroler(5), Be suretole-
DISASSEMBLY(Figure3)'-' tainthe"rollers intheouterringiftheyareloose;
k. Pull the drive(4) awayfrom the wear
plate (3).
l. Carefullyremovethe o-ring (21)from
Cleanthe exteriorof the:''motor," the wearplate(3):
Cleanlinessis extremelyimportant m. Lift the wear plate (3) away from the
whenrepairingthehydraulicrotation bearinghousing(1).
motor.Workin a cleanarea.
n. Removethe shatt face seal (20)from
a. Draintheoilfrominsidethemotor. the wearplate(3).
b. Placethemotorinavisewiththeoutput o. Removetheo-ring (18)fromthe bear-
shaftdown. ing housing(1).
ACAUTION
CLAMPACROSSTHE MOUNTING
FI.ANGEAREAOF THE BEARING Youmayneeda pressto removethe
HOUSTNG (1). EXCESSTVE shatt/bearing
kit from the bearing:
CLAMPING PRESSURE WILL housing.
CAUSE DISTORTION: WHEN
CLAMPING,USESOMEPROTEC. p. Removethe shafUbearing kit (2)from
TIVEDEVICEONTHEVISE,SUCH the bearinghousing(1).
AS SPECIAL SOFT JAWS OR q. Usea smallscrewdriver to removethe
PIECESOF HARD RUBBEROR shaftoilseal(19)anddustseal(17)fromthe
BOARD. bearing housing(1).

Page8, Section 5, 1M6035

1. BearingHousing 8. Valve 15. Plug 22. O-Ring
2. ShafVBearing
Kit 9. BalancePlate 16. Bott 23. GRing
3. WearPlate 10.Spring 17. DustSeal 24. OuterFaceSeal
4. Drive 1 1 .P i n 18. GRing 25. lnnerFaceSeal
5. Geroler 12. ValveHousing 19.OilSeal 26. O-Ring
6. ValveDrive 13.Plug 20. Shaft FaceSeal 27. O-Ring
7. ValvePlate 14.SteelBall 21. GRing
Figure3. HydraulicRotationMotor- sect¡onallltustration

Page9, SectionS, lM60gs

 ACAUNON j. Remove thewearring(96)fromthebot-
tomcylinder (92)andwearring(1O0)fromthe
topcylinder (97).
BE CAREFULNOT TO DAMAGE k. Removethe two seals(95) fromthe
THE BORE OF THE BEARING bottorncylinder(92)andseal(99)fromthetop
]
HOUSING. cylinder(97).
l. Striketheedgeontheinsideof thebot-
tomcylinder(92)witha suitable
steelbartore
13. REVERSEPERCUSSIONKIT DIS- moveit fromthereversehousing(87).
(Figure4)
ASSEMBLYINSTRUCTIONS.
m. Placethe reversehousing(87)on a
Thefollowingdisassemblyinstructions are
suitablesteelsleeveso thatthe housingliner
(88)andthe top cylinder(97)can be driven
for usewhenthe drifteris furnishedwith a re-
versepercussionkit.
out.

a. Loosenthetwonuts(91)withawrench.
b. Loosenthe eightbolts(111)whichre- 14. INSPECTION
OFPARTS.
tainthe twoaccumulators(103)to the reverse
housing(87). The operatingperformance of the drifter
c. Removethe nuts (91),bolts (90),re- depends on thecondition inwhich theworking
versehousing(87)and strikingbar. partsaremaintained. Whenit is necessary to
disassemble the drifterfor repairs,all parts
d. Unscrewthe eightbolts(111)whichre- shouldbeinspected forwearanddamage and
remove'the.âccu-,'j replacem
tain the accumulatoÍs',ârìd ent parts'installed:
whennecessâr!- ::,,
mulators(103).
a. HydraulicRotationMotor (45).
1. Cleanall metalpartsin cleansol-
ventandblowdrywithair. Donotwipedrywith
a clothor papertowelbecauselint or other
BESURETO BLEEDTHEACGU- mattercangetintothemotorandcausedam-
MULATORS BEFORE ANYACCU. age.
MULATORDISASSEMBLY IS AT-
TEMPTED. 2. Checkallmatingsurfaces-Replace
any partsthat havescratchesor burrsthat
e. Clampthe accumulators in a viseand couldcauseleakage.Donotusea coarsegrit
removethe cap (108)fromthe accurnulator or tryto fileor grindtheseparts.
cover(104). 3. Checkaroundthe chamfered area
f. Loosenthe valve(106)witha suitable oftheshaftforburrs,nicks,orsharpedgesthat
wrenchto bleedgasfromthe accumulator. damagesealswhenreassembling.
g. Unscrewthe cover(104)fromtheaccu- b. Gylinder(22).
mulator body(103)witha suitable wrench. Inspect cylinder bore for scratches,
gouges andgalling;repairanyof theseirregu-.
(105)fromthe larities.
h. Remove thediaphragm
accumulator body(103). c. Backhead(7). .\
i. Usinga hammerandsoftdrift,strikethe thefrontface(thefacethatbuttsup
lnspect .;'t
Ji

edgeonthe insideof the reversepistonbush- to thecylinder

) forscratchesandgouges;re-
ing(102)to removethe reverse piston(101). pairanyirregularities.

Page10,Section 5, 1M6035
 83. ChuckEnd 93.O-Rin-_..,'
84. O-Ring 94.Ring,Back-up
85.Bushing 95.Seal
86.Chuck 96.Ring,Wear
87.Housing, Reverse Top
97.Cylinder,
88. Liner,Housing 98.O-ring
89. O-ring 99.Seal
90.Bolt 100.Ring,Wear
91.Nut,Nylon 101.Piston
92.Cylinder,Bottom 102.Bushing,
Piston
103.Bod¡Accumulator
104.Cover,Accumulator
105.Diaphragm
106.Valve
107.Washer,Seal
108.Cap
109.O-Ring
110.Ring,Back-up
111.Bol t

!
gt
(çt
o
-4

a
o
()
õ'
a
E
=
(t)
ct
@
(rl Figure4. ReversePercussionKit
 d. CylinderLiner (25),FrontLiner(34)' suitablepullersto removethem,thenpressin
GylinderBackLinerand GapLiner(70). newbearings.
Inspectthe insidediameters of the liners m. ldler GearBearings(57).
forgalling, andseizuremarks;repairanyirreg- lnspectthe idlergearneedlebearingsin '-,"-\
ir
' . . . lli
ularities.Replace the linersif necessary. theidlergear.lf thebearings arewornordam-
e. Piston(33). aged,use a suitable fixtureto pressout the
bearings, thenpressin newbearings.
1. lnspectthe strikingfaceof the pis-
ton to see if it is chipped. A pistonwith a n. ChuckEndBushing(67).
chippedstrikingfacemustbe replaced. Inspectthe chuckendbushingfor pitted,
2. Inspect theoutsidediameter andin- scraped,or wornsurfacesand replacethe
side diameterof the piston for galling. Any bushingif necessary.
gallingrequires replacement of thepiston. o. StrikingBar.
f. GearBox (50). 1. The strikingfaceof the strikingbar
must be square,flat, and free fo all sharp
Inspectthe gearbox facesfor scratches edges.The strikingbar mustbe discarded if
andgouges;repairif necessary. cracked, peened, or crowned.
g. GearBox Bush¡ng(5f). 2. The taperedseatingface of the
Inspect the gear box bushing for strikingbar mustbe freeof cracksandsharp
pitted,scraped, or wornsurfacesandreplace edges. lf the face is peenedto 1/16in.
the bushingif necessary. (1.59mm)deepor greater,the strikingbar
mustbe discarded.
h. DriveGear(54).
p. O-RingsandSeals.
Inspect thefrontandrearfacesofthedrive .
gearfor scraping and.wear;,inspect,the drive, lnspectallsealsand"o-rings fornicks,,cutq.
gearteethforgalling, distortion, orbending; in- tearsanddeformation andreplace'asneces-
spectthe conditionof the spline in the drive sary. Hydraulic seals and o-ringswearduring
gearbore. Replacethe drivegearif neces- normaloperation.Hydraulic oil leakagemay
sary. be an indication thatsealsor o-ringsneedto
be replaced.
i. ldlerGear(56):
q. Bolts,Gapscrewsand Nuts.
Inspectthefrontandrearfacesof theidler Inspectthethreadsof all bolts,capscrews
gearfor scrapingandwear;inspectthe idler
gearteeth forgalling,
distortion, orbending;in- andnuts;repairas necessary.
spectthecondition of the idlergearbore.Re-
placetheidlergearif necessary.
REASSEMBLY
15. ACCUMULATOR
j. GhuckDriver(63). INSTRUCTIONS.
lnspectthe front and rear facesfo the
chuckdriverforscraping andwear;inspectthe a. Clamptheaccumulator body(37)intoa
pawlendofthechuckdriverfordistortion ofthe vise.
pawl. Replace thechuckdriverif necessary. b. Lightlylubricateeachdiaphragm(39)
k Ghuck(68). andinsertthem intheaccumu-
intheircavities
latorbody(37).
Inspectthe pawl end for distortionand
wear;inspectthecondition of thesplineinthe
insidebore. Replace the chuckif necessary.
l. DriveGearBearings(55). Besurethelipontheoutside edgeof
Inspectthedrivegearbearings inthegear the diaphragmis properlyseatedin
box. lf thebearings arewornordamaged, use thegrooveinthe accumulator body.

Page12,Section5,1M6035
 Besurethelipontheoutside edgeof
the diaphragm is properlyseatedin Lubricateall seals(priorto installa-
tion)with petroleurn jell¡ such as
thegroovein the accumulator body.
Vaseline@. Alwaysuse newseals
c. Installtheaccumulator covers(38)us- whenreassembling themotor.Refer
ing a suitablewrench.Torquethecoversto to PL6035, "PartsListForHydraulic
253lb-ft (343Nm). DrifterModelYH65A',forpartnum-
d. lnstallthesealwashers (41)ontheac- berof the sealkit.
cumulator valves(40). Install
the accumulator
valvesonthe accumulator covers(38). 1. Reassemble in reverse orderofdis-
e. Refer to Section4, Paragraph11 assembly,unlessotherwisenoted. Referto
"Charging TheDrifierAccumulators" foraccu- Paragraph 12.
mulator charginginstructions. 2. Alignmentstudsareextremely help
16. HYDRAULIC ROTATION MOTOR fulwhen reassembling the motor. Theycan be
shopmadeto thespecifications shownin Fig-
REASSEMBLY. (Figure3) ure6.
ACAUTION
Apøor. l/?in (12-?nnl l¡î.(!s.4mn
KEEPDIRTANDOTHERFOREIGN
MATERIAL OUTOFTHEDRIFTER.
DIRTIN THE DRIFTERWILL.RE- Ftsl Sæls m Edr Sí.h
SULTIN DAMAGETOTHE.PISTON'.i
AND OTHERINTERNALCOMPO-
NENTS. Figure6. AlignmentStuds

Shoft Foce
Reassernbly involves threestepsin
Seol thetimingof the rotation motor(Re-
fer to Steps3, 4, 5). Tmingdeter-
minesthe d¡redion of rotat¡onof the
Weor Plqte motoroutputshatt,andthus,the ro-
tationdirectionof the drillsteeland
..-Seol bit.Tmingpartsincludethegeroler
:
(5),valvedrive(6),valveplate(7),
\Shoft
Beoriirg
a
Ass!.¡
andvalve(8).
I
3. FirstTÏmingStep: Locatethe!arg-
est openpocketinthegeroler(5)and markit
ontheoutside proceed
edgeofthegeroler, as
follows:
a. Installthe valvedrive(6) in the
geroler(5).
Figure 5. Shaft FaceSealnShaft Seal
and Dust Seal Installation seal(23)inthegroove
b. Installthe
in the valveplate(7).
Page13, Section 5, 1M6035
 c. Alignthecasedrainholesin the witha suitable driveor presstheliner
fixture,
geroler(5) and valveplate(7),and ¡nstallthe intothehousing.
valve plate (seal side toward the geroler) \
againstthe geroler. ìS
$

4. Second Timing SteP: Locatethe

Lubricateall seals (priorto installa-
slot openingin the valveplate(7) whichis in
tion) with petroleumjell¡ such as
linewiththe largestopenpocketin the geroler
(5). Vaseline@.Atwaysuse new seals
whenreassembling.
5. Third Tming Step: Locate anY Referto F¡gure4 forthe correctfac-
oneof thesideopenings thatgoesthroughthe ingdirectionofthe lipwheninstalling
bottomfaceof the valve(8). Lineup this side the seals.
openingwiththe openslotof the valveplate(7)
thatis in linewiththelargestopenpocketofthe b. Assembly Procedure for Cylinder
geroler(5). Rotatethevalve(8)clockwise until Seals.
the splineteethengage. 1. Collapsesealas shownin Figure9.
Pushsidesin as shown,thenslideintobore
ACAUTION and positionsealin groove.

INSTALLTHEFACESEALS¡NTHE
POSITIONSHOWNIN FIGURE7
ORTHEMOTORWILLNOTOPER.
ATEPROPERLY.DO NOT FORCE
OR BENDTHEFACESEALS ANY
DAMAGETO THESESEAI-SWILL.
ADVERSELY AFFECTTHE OPER- Figure8. SealFreeForm
ATION OF THE MOTOR. MAKE
SURETHE SEALSARE FIRMLY
SEATED.
Pin Groove lnner Scql Ouler Seol

Figure9. SealCollapsedForm

Figure7. lnnerand OuterFaceSeal

Installation.

17. REVERSEPERCUSSIONKIT RE-

(Figure4)
ASSEMBLYINSTRUCTIONS.
\
*
a. Placeoil on the housingliner(88),in- Figure10. Bump ,J

sertthe linerintothe reversehousing(87)and

Page 14, Section 5, 1M6035

 2. Usinga tool with roundededges, i. Placethe assembledcover and dia-
firmlywork the seal into its grooveuntil the phragmon the accumulator body(1O3).
"bump"has disappeared and the seal sticks j. Fix the accumulatorcover wrench
outof the groovethe sameamountalltheway (suppliedwith drifter) on the coverwith the
around.
thumb screw. Screwthe accumulatorcover
(104)intothe accumulator body(103).Torque
the coverto 253 lb--ft(3a3Nm).
k. Greasethe sealwasher(107) and in-
Failureto removethe "bump"may stall the washerand valve(106)in the accu-
causedamage tothepistononstart- mulatorcover(103).
up. l. Screwthevalve(106)intothe accumu-
latorcover(103).
c. lnstallthenewseal(99)andwearring m. Refer to Section 3, Paragraph11,
(100)intothetopcylinder(97)andan o-ring "ChargingThe DritterAccurnulators',for in-
(98)on the O.D.of thetopcylinder.Referto structionson chargingthe accumulators.
Figure4 forthecorrectpositioning ofthe seal
lip. n. Installthe o-ring (109) and back-up
ring(110)on the accumulatorbody (103).
d. Applyoilto bothoutsideandinsideof
thetopcylinder (97)andinsertthetopcylinder o. Attachthe accumulatorassembly to the
intothereverse housing(87). Usea pressor reverse housing (87)withthe fourbotts(111)-
drivethetopcylinder intothereverse housing Torquethe boltsto 115lb-ft(156Nm)-
witha suitablefixture.
e. Install
thetwoseals,(95) and'wear,ring,,
(96)intothebottom cylinder (92).RefertoF¡g- 18. DRIFTERREASSEMBLY
ure4 forthecorrectpositioning oftheseallips. INSTRUCTIONS. (Figuresl A 2)
f. Applya coatof oil to,boththeoutside
andinside.of thebottom.cylinder (92): Install....;
the bottomcylinderintothe reversehousing ACAUTION
usinga pressor driver.
KEEPDIRTANDOTHERFORE¡GN
MATERIAL OUTOFTHE DRIFTER.
DIRT¡N THE DRIFTERWILL RE-
. SULTIN DAMAGETOTHEPISTON
AND OTHERINTERNALCOMPO.
Careshould betakenwhenpressing NENTS.
thepistonintothebottom cylinderso
as nottodamagethesealsinthecyl-
a. Exceptfor press-fitcomponents,parts
^ inder. shouldfittogethereasily.lf unusualforce is re-
g. Applya coatof oil to boththe outside, quired,a partis out of alignmentand mustbe
andinsideof,thereverse p¡ston(101).lnstall correctedto preventbindingand damage.
the reverse piston
in'thebottomcylinder(92)",
b. For properdrifterassembty,it is impor-
usinga suitablebushingtodriverthepistonin. tant thatnutsand boltsbe tightenedto the cor-
h. Clampthe accumulatorbody (103)ina recttorquevalves.Table2 liststhetorqueval-
vise.lnstallthe (105)
diaphragm ontheaccu- ues of the bolts and nuts used on the drifter
mulator cover(104)andgreasethem. with lubricatedthreads.

Page15,Section5, 1M6035
 Table2. Values
TORQUE "\
lllustration NAME OF PART I
No. u.s. (Metric)

62, Fig.1 CoverAssemblyBolt(4) 101lb-tt (137Nm)

72, Fig.1 Rolt 12\ 360 lb-fr (488Nm)
44, Fig.1 Accumulator Bo¡t(8)
Assembly 180 lb-tr (244Nm)
49, Fig.1 (2)
RotationMotorCapscrew 101lb-ft ( 1 3 7N m )
82, Fig.1 ThroughBoltNut(4) . . 360 lb-fr (488 Nm)
38, Fig.1 & Cover(2)
Accumulator 253 lb-ft (3a3 Nm)
1O4,Fig.7
40 Fig. 1 & Valve(2) . . . . . .
Accumufator 22lb-it (30 Nm)
106F, ig.7
1 1 1F, i g 7
. Accumualtor Bolt(8)
Assembly,
(Reverse .....
Percussion) 115lb-tr ( 1 5 6N m )

h. Pressa newspringpin (53) intothe

gearbox (50)and installa newo-ring (52)
aroundthe pin.
Lubricate (prior,to
all seals, installa- bearings(55),were
i. lf the drive.gear;
tion)with petroleum jelly,such as damaged, pressnew bearingson the drive
Vaseline@. Alwaysuse new seals gear(54).
whenreassembling. j. Greasethe drivegearassembly andin-
stallit inthe gearbox(50).
c. lf removed, installthecapliner(70)into k. Installan o-ring(59)onthe gearshaft
thechuckendcap(69). (58).
l. Presstwo new needlebearings(57)
d. lf removed, installthebushingset(64) intotheidlergear(56),if required, andgrease
intothechuckdriver(63). the bearings.
e. lf removed, installthegearboxbushing m. Aligntheidlergear(56)inthe gearbox
(51)inthegearbox(50). (50);insertthe idlergearshaft(58)thruthe
f. Installa newo-rirìg(35)andwiperring holein thegearboxandthrutheidlergear.
(36)on thefrontliner(34)andpressthe front n. Installa newo-ring(61)on the cover'
linerbackintothegearbox(50),ifthefrontlin- (60)andattachto the gearbox(50)withfour
er was removed. bolts(62). Torque the boltsto 101lb-ft (137
Nm). \
g. lf the chuckendbushing(67)was re- ,/
ie"

movedfromthe chuckend (65),pressthe o. lnstalla newo-ring(23)in thecylinder

bushing in. (22)

Page16,Section5, 1M6035
 ACAUTION v. Installthevalveguide(31)intothe back
liner (27)usinga plastichammer.
sPEcrALcÀnr ts REouTRED w. Insertthe valve(32) in the valve guide
WHEN ¡NSTALLING PISTON ( 3 1 ).
SEALS (26) TO AVOTDDAMAGE x. Applyoilto thebacklinerassemblyand
TO THE PISTON WHEN THE instalIthe assemblyintothe cylinder (221: drive
DRIFTERIS STARTED. the assemblyin with a hammerand plastic
drift.
MAKESURETHE LIP OF THE IN- y. Installo-rings (24) in the two through
NERSEALFACESTO THE INSIDE bolt holesin the cylinder(22).
OF THE HYDRAUL¡C OIL CHAM-
BER. z. Installthe blowtube supporter(2) and
o-rings (3, 4) in the backhead(1).
p. AssemblyProcedure For PistonSeals. aa. Installthebackhead(1)in the cylinder
1. Installeach o-ring attachedto the (22). Strikethe backheadlightlywith a plastic
outs¡deof theseals(26)intothe groovesof the hammer.
cylinderliner(25);then insta¡lthe innerseal ab. Applyoil andgreaseonthechuckdriver
(RefertoParagraph17, stepb). Makesurethe (63)andinstallthe chuckdriverinthe gear box
lipoftheinnersealfacestothe insideofthe hy- (50).
draulicoilchamber. ac. lnstalltheo-ring(66)onthechuckend
q. Applyoil to the outsideof the cylinder (65)and insertthe pilotdiameterof the chuck
liner(25);usea pressto insertthe cylinderlin- end intothe gear box (50)-
er intothe c¡¡linder(22)- ad. Placeârì o-rirìg (47) on the gear box
r. Restthe cylinder'(Z2|'horizontalfy'on- (50)andinstalltheh¡¡draulic motor(45). Install:.
twowoodenblockssothatthegearbox(50)p¡- the four capscrews (49) and torque the cap-
lot diametercan be drivenintothe cylinder. screwsto 101 lb-ft (137Nm).

ACAUTION
THEDRIFTERMUSTBEFIXEDBY
BOLTSTO A WORK BENCHBE.
Afterchanging the pistonseals,a
strongerforcewillbe required FORETHETHROUGHBOLTSARE
to in- TORQUED.
stallthepiston.
s. Applyoil to the piston(33);carefully ae. Installthe fourthroughbolts(80). In-
slidethepistonintothecylinder (22).Afierthe stallthe o-rings (81)on the botts,greasethe
pistonmakescontactwiththe pistonsealsin threadsand installthe nuts (82). Make sure
thecylinderanda stronger forceis noticed, a the drifteris fixedby boltsto a workbenchbe-
hammerandplasticdriftmay be required to foretorquingthe nuts.Torquethenuts (82)to
drivethe pistonin the restof the way. 360 lb-tt (488 Nm).
t. lnstallthe
seals'(29,30)inthecylinder af. Installthe chuck(68), strikingbar, cap
backliner(27);referto Stepb for installation o-ring (71)andchuckendcap (69).lnstallthe
instructions. two bolts(72)andtorqueto 362lb-ft(491Nm).
u. Installtheo-ring(28)in thegrooveon ag. Installthe backheadgland(14) on the
theoutsidediameter ofthecylinder backliner blowtube(19);insertthemintothe backhead
(27). (1).

Page17, Section5, 1M6035

 twoaccumulator
ah. Installthe assemblies Usingthefurnished accumulator charging
to the cylinder.Installthe eightboltsand kit,checkthe accumulator pressures as tol-
torqueto 180lb-ft (2aaNm). lows: -\
y1l
a. Usingthe spannerwrench(furnished
with the drifter),removethe protective
caps
19. INSPECTION OF ACCUMULATOR fromtheaccumulatorcovers onboth accumu-
PRESSURES. lators.
b. Loosenthe accumulator valveslightly
ACAUTION (aboutan 1/8of a turn).
c. Attachtheaccumulatorvalve assembly
THE DRIFTERACCUMULATORS turningtheassemblyhand
MUSTBE CHECKEDEVERY250
totheaccumulator,
HOURSOF OPERATION TO MAKE r¡ght.
SURE THE PRESSURESARE d. Checkthepressure gaugeontheaccu-
CORRECT.REFERTO SECTION mulator charging assembly.
3, TABLE1, FORTHE CORRECT
ACCUMUI.ATOR PRESSURES e. lf the accumulatorpressureareincor-
AND BELOWFOR THE PROCE- rect, refer to Section 4, Paragraph11,
DURE FOR CHECKINGTHESE "CHARGING THE DRIFTERACCUMULA-
PRESSURES. TORS".

Page 18, Section 5, 1M6035

InstructionManual tM6035
RevisionI TROUBLESHOOTING Section6
July 22,1992 Page1 of3

AlphabeticalIndex
T¡tIE PageNo-
Introduction 1
Troubleshoot¡ng 1

1. ¡NTRODUCTION. 2. TROUBLESHOOTING.

rhissection
contains
deraired
inrormation
,rinrJïfrlH[3li'1oil',,ffr.'3i??iflT?3
for troubleshootingthe Hydraulic Dritter will providea stepby stepquestionand reme-
YH65A(hereafterreferredto as drifter). dy. Usingboth of these togetherwill solve
mostcommonproblems.

Table1. Troubleshooting

TROUBLE. PROBABLECAUSE REMEDY

Drifterwillnotstart. 1. Coldhydraulicoil or 1 .Neverusehydraulic

oilthatdoes
wronghydraulicoil. notconformto the specifications
outlined in Section5, Table1- lf
ambient temperature is below;32eF
(0'C),drillmaybe reluctant to
start,but it willstartif controlvalve
is leftin theon position fora few
minutes.
2. Driftervalvestuck. 2. Checkvalvefor scoring,burrs,or
mechanical interference. Repairor
replace.
Drifterlackspower 1 . Lowhydraulicoilflow. 1 .Increase flowsetting.
(hydraulicsupply 2. Leaking sealsor o-rings. 2. Checkfortightnessof hardware.lf
pressurenormally necessary, visuallyinspect
seals.
above1991psi
3. Pistonnothittingstriking 3. Checkfor excessively wornstriking
[140kg/cm2]). barat fullblow. barsplinesor strikingbarseatand
replaceif necessary.Replace
strikingbarif shankendis exces-
sivelyworn.
Throughbolt 1 . Uneven
tensionon nuts 1 . Nutsmustbetightandunderequal
breakage. or loosenuts. tension.Tghtenthe nutsgradually
Apply325lb-ft.
andalternately.
(aa1Nm)oftorqueto nuts.
 Table1. Troubleshooting(cont.)

TROUBLE PROBABLECAUSE REMEDY )

No steelrotation Steelbindingin hole. Sharpenor replaceworn bits.

or rotationis Applycorrectamountof down-
weak. pressureand keepdrill,steel
and holein alignment.
Wornor leakingrotation Repairor replacemotor.
motor.
3. Incorrectly
assembled 3. Checkfor properassemblyof
chucUdrive gearcompo- the chucUdrivegearcompo-
nentsor èxcessively
worn nentsand for excessivelyworn
components. components.
Onethroughboltbroken Replacebrokenthroughbolt.
causingchuck endbinding. Apply360 lb-ft (a88Nm) of
torqueto both nuts.

Slowdrillingspeed. 1. Dullbit. 1. Replacebit.

2. Cuttingsnot beingremoved 2. Increaseblowair or waterto
from hole. keepbitworkingon freshrock.
,.
3. Pluggedr'drill,steel:, 3. Removedrill steel,,clean.out.,,.
passages.
4. Drifterandsteelnot aligned 4. Checkalignmentwhiledrillingto
with hole;steelor bit bind. preventbinding,andto avoid
ing in hole. stucksteel.
5. Wornfrontheadcompo- 5. Checkchuckend components
nents. and replaceif necessary.

6. Incorrectfeed pressure. 6. Adjustfeed pressure.

7. Accumulators not properly 7. Bleedand recharge
charged. accumulators.

Stucksteel. l . Driving
steelatterbit is dull 1 . Don'tforcea dullbit,sharpen
or
or haslostitsgauge. replacewithnewbit.
2. Crowding bit in softforma- 2. Usedown-pressure cautiously
tions. in sottformations: becertain
steelis rotatingfreely.
3. Cuttings
notbe¡ngblown 3. Useblowaircontinuously.
fromhole.
4. Misalignment
of steelwith 4. Keepdrillsteel,andholein
holecausing
binding. alignment
at alltimes. ì
'¿tl

Page2, Section6, 1M6035

 (cont.)
Table1. Troubleshooting

TROUBLE PROBABLECAUSE REMEDY

Chippingor 1. Badstrikingbar whichis 1. Takebad strikingbarout of ser-

breakageof too hardor roundedon end vice - one bad strikingbar can
piston. allowingminimumcontact damageotherparts.
with pistonstrikingface.
2. Wornchuckend compo- 2. Replaceworncomponents.
nentswhichpermitstriking
barto cockin chuckso that
pistonstrikesshanka
glancingblow.

Page3, Section6, Form 4986

)

i
InstructionManual tM6035
Revision
t MAINTENANCE
RECORDS
AND NOTES Section7
July 22,1992 Page1 of4

Date RunTime Work Performed Work

(Hours) Qty
By
 '--¡i
rç
t

: ! 1
. ."'t

Page2, Section7, 1M6035

Date RunTime Work Performed Qty Work
(Hours) By

Page3, Section7, ¡M6035

 NOTES
\
tì
.t

Page4, Section7, 1M6035

-
ftfÃsCapeo
-

Atlas CopcoDrilling Solutions,Inc. A CompanyWithin the Atlas CopcoGroup

jþ
P.O.Box462288,2100 NorthFirstStreet Phone: +1972-496-7400
Garland,T exas7 5046-2288 Fax: +1972-496-7425
www.atlascopco.com/drillingsolutions info.acds@atlascopco.
com