Parmac 122 D631468-X

 

HB-l-7ó

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INSTALLAT'ON f '' .i INSTRUCTIONS REPAIR N D MAINTENANCE ,)

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BRAKE \ \ \"riri'7 I N HYDROMATIC ,,-

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ASSEMBLIES D63r357-X D53 D53477-X 477-X D631446-X D631478-X/Í8b i qrjgr 119D631454-X D631479-X D631468-X D631497-X D631476-X D63t670-X

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P ARMAC, N C . COPYRIGHT 1981,PARMAC,

rsr(c.

Monuf cturers f Pa ke rs b u rf Products -?IYf BOX573 BOX 573 ANSAS 7337 COFFEYVILLE,ANSAS COFFEYVILLE, AREACODE AREA CODE 316) 51.5000

LITHO .S.A.

 

 .-q-NLE r PAGEN O . PAGEN

SECTO SECT ONS

I

l.

INSTALLATION.

2.

GENERAL-

3.

D SASSEMBLY For Replacement of Bearings and/or Seals-

4"

REASSEMBLY For Replacement o f Bearings and/or Seals- -

(

D SASSEMBLYN SASSEMBLYN D REASSEI4BLY For Replacement of Rotors and Stators - -

l0

6.

LUBRICATION-

lt

4

ILLUSTRATED RAI.'NG NG S

Rotor Removal U631731 Bearing Disassembl (U631732) Bearing Disassembly U631733) S heet l ) Bearing Assembly (U631734,Sheet S heet 2 ) Bearing Assembly U631734,Sheet Right Hand Rotor/Stato r

(U631735, Sheet l ) -

Left Hand Rotor/Stat or (U631735, Sheet 2) - | | I ustrated Assembl o f Hydromat c Brake General Assembly of Hydromat¡c Brake

HYDROMATIC, YDROTARDERruo ARKERSBURG REGISTEREDRADEMARKS F PARMAC, NC.

l2 l3 t4 l5 t6 t7 t8

r9 20

 

I NSTALLATO N REPAR AND ¡4A NTENANCENSTRUCTO N S I 22 HYDROMATC BRAKE

I NSTALLAT ON Sect i o n I

Brake Mount i n q

a

The 122 Hydrornatic Brake is normal l y used on workover rigs, b u t has been used o n sorne small drilling ri gs. l^lhen mounting the brake, it must b e s u ppor e d on each side of the brake housing, b y u s ing the four (4) SZg-tl tapped hol e s i n the bearing retainer housing, and t h e four (4) 5/8-11 tapped holes i n the end cap. The brake housing

i s sufficiently

rigid

and strong

so that

the brake

can b e supported b y bolting a plate side of the brake without a n y suppor-t between the two plates. The t olztteach d iameter pil o t provided, on the brake housing, should b e used to position the brake i n its mounting. The brake should always b e mounted with the outlet connection on top, and the inlet connections on the bottom t o avoid trapping air inside t h e the brake"

Fluid A 3'r diameter and the brake inlet, suppl y.

Svstem

pipe should b e connected between the water o r fluid supply and a 2tt diameter pipe between the brake outlet an¿ wáie,

Two (2) 2 " N.P"T" connections are províded i n the lower part of the brake housing for inlet connections" o h of th-q inlet conn""tion, must b e conngcted t o rhe f luíd supplv" Since Ir'J-t*o 6 z " '-l"t oññrf n o ¡nternally connected i n the brake housing, improper braking " will result i f only one connection i s used a s an ínlet" The 2 " pipe Plu9, located between the two inlet connections, i s provided a s a drain and cannot b e used for a n inlet connection. The pipe plug should never b e removed unless a drain I ine is to b e connected t o the brake. a drain li.ne is installed, a valve must be placed i n the line and remain l f closed duríng operation of the brake" The 2 " housing, directly N-P.T"opposite outlet connection is located onprovíded the top side of thei s brake the inlet connectíons. thq.-brake not dischargíng water at a faster rate than that entering the brake, there should

 

-2-

never be any need to install a valve in the outlet o f the brake. lnstallation of the valve will not increase the braking capacity o f the brake. The valve pressure will only increase the in the brake and decrease the flow o f fluid through the brake. pressure fluid High and reduced flow will cause damage to the seal and increase fluid temperature" However, if a valve is installed i n the outlet, a l/2t'diameter hole should be drilled in the gate o f the valve t o prevent complete shut-off of the outlet I ine. The 122 brake should b e controlled, o r regulated, by an inlet valve installed between the brake inlet connection and the fluid supply tank. A level control tank, as shown in catalog HB-4-74, will not perform satisfactory due to the small size of the brake. The brake may b e gravity fed by a supply tank, o r b y a fluid pump. A positive head must b e maintained on the brake inlet when the brake i s gravity fed. l f the brake i s suppl ied fluid by a PumP, the maximum pressure should not exceed 2 5 PSI t o avoid damage to t h e brake sea I "

Drain Connections brakeconnections, may b e drained by removing the 2r' N.P"T. plu9, located between Lhe twoTheinlet and draining the inlet I ines connected to the brake. An alternate method of draining the brake is to remove the three l/4tl N.P"T. plugs located i n the bearíng retainer housing, center ring, and end cap" During draining o f the brake, the brake shaft should be rotated i n order ro remove the fluid trapped in the pocket sectíons of the rotor"

Lubr icat i nq Connect ions Two grease fittings are proviala per each brake assembly. One grease fitt¡ng provides lubricant to the cavíty between the seals, the other provides lubrícant to the bearings. The bearing cavity contains a relief f¡tt¡ng and the seal cavity contains a drílled hole which serves a s the grease rel ief and a s a WeeP hole. l t i s normal for grease t o b e expelled out of the weep hole dur i ng operat ion of the brake.

 

-3GENERAL Sect i o n 2

2-A VJhen he Hydrornatic Brake ís removed from service for any length o f time, a surplus guantity o f No.2 waterproof grease should b e pumped nto all o f t h e grease fittings to assure purging the water frorn the bearing and seal cavities. the brake with lubricating oil, or a suitable rust I t is advisable to fill inhibitor t o prevent the formation o f rust and scale within the brake. 2-B The item numbers given in the following instructions correspond to the item part numbers used on the attached parts I íst and assembly drawirEs" 2-C When ordering parts, the brake assembly number and seríal number are required t o assure correct part replacement. The assembly number and serial number are stamped on the name plate (y) of the Hydromatic Brake" 2-D

During disassembly, the various parts that are to b e reassembled should b e thoroughly cleaned and wrapped as they are removed.

?-E

All rrorr rings removed during disassembly must b e replaced by new ones. A small cut or nick or prolonged compression o f thetroil ring wilI render i t unsatisfactory for future service. Care must be used in the reassembly of rrorr parts contaíning rings to prevent damaging the t'orrring.

2-F

All rrorr rings and I ip seals should b e lubricated facil itate the reassembly process.

with grease o r oil

to

2-G N o problems should aríse during repair of the Hydrornatic Brake provided t h e fol lowing instructions are fol lowed expl icitly. I./ARNN G : T h e ccaa s e o f seal (14) fits very close to sleeve (9) and will damage he sleeve if the brake shaft is allowed t o move wi th i n the brake housing" T o avoid damaging the seal s I eeve, wi th the seal i nstal led, both bearings must b e instal led and all bearing clearancg o r end play, removed before the brake i s moved o r hoisted.

 

-4D SASSEMBLY Section

3.

For Replacement o f Bearinqs and/or Seals 3-A

The 122 Hydromatic Brake is different in constructíon than most o f the Hydromatic Brakes. The shaft and rotors are supported b y two bearings located o n one side o f the rotors, whereas in most brakes, the shaft and rotors are supported by two bearings with one located on each síde of the rotors. The cantilever type design o f the 122 Brake requires only one seal ing element ínstead of two seal ing elements.

3-B

In order to replace the bearings and seals, the brake must b e completely disassembled. l t i s not advisable to replace, the bearings and seals frorn t h e shaft s íde o f the braE

3-C l'/ith the brake shaf t either in a vert ical cap screws (33), lockwashers (l+¡, and nutsor (35) hor izontal pos tion remove which hold (7) ttwel end cap o ve center ring (8). . , 3-D

Removeend cap (7) b y inserting three 5/8-ll X 2'r cap screb/s into the tapped Removeend holes provided in.end cap (7). Remove rorr ring (27) f rorn groove i n end c a p (7) andrrorrring (28) from groove i n stator (5).'

3-E

lnstall two 5/8-ll X 2rr cap screws into the two tapped holes provided i n t h e center ring (8) flange and renrove renrovestator stator (5)"

3-F

Remove welve cap-screws (33), lockwashers (lt+¡, and nuts (j5) frorn bearing reta i ner hous n g (25) .

3-G q(8)lizing 5/8-ll center x 2t' cap i n stator tapped holes providedtwoin nor' center f lange,tworemove (8) f rom ring.screws (6). h"rou" ¡.i.g tring él) from grooves i n center ring (8)"

 

3-H

Remove.snap ring (26), Iocated o n outer end of shaft (l), frorn groove i n Remove.snapring shaft (l). Snap ring (26) may be removed without speciai tools. pry end o f snaP ring out o f groove and spiral ring around shaft out o f groove. Avoid bend n g o r damag ng snap r i ng.

3-l

Rotors (2)(3) are a press fit on shaft (l). Three 3/8-16 tapped holes o n 3-7/8" diameter are provided on each side of rotors (z)(l) for removal from shaft (l)" Rotors (z)(l) r"y be pulled from shaft til'uv'util izing a puller and bolts a s shown on Drawing U631731.

3-J

Remove two keys (4) i tfrom Snap ring (26) next t o rotor (3)otors need (2)(3) not beand removed unless i s shaft" to be replaced.

-53-K

Removestator (6) from bearing retainer housing (25) by using two 5/8-ll Removestator tapped holes piovided in flange of bearing retainer housing (25). Remove rroir'r.¡nn, Q7)Q8) f rom grooves in bearing retainer housing Q5).

3-L

Removeeight 7/16-14 cap screws (17) and Iockwashers (18) from bearing retainer hous n s (25) .

the 3-M Pull bearing retainer (:t¡ from bearing retainer housing (25) by utilizing 5/8-ll tapped holes provided in the bearing retainer (lt¡ flange. Remove w o tro" rings (16) f rom grooves in bearing retainer (lt;. 3-N

Removeeight 3/8',-16 cap screws (Zl) an¿ lockwashers (22) from bearing retainer ( 3 ) an¿ remove cover p l ate ( I 9 ) .

3-0

Using a punch o r drift pin, drive roll p¡n (4 ) out of shaft (l) b y inserting Roll p¡n (45) may b e punch into the hole on the opposíte side of shaft (l). driven into shaft until p¡n i s flush with shaft surface o r slightly below surface.

3-p

Bend lockwasher (zil tab out o f groove in locknut (fO¡ s o that locknut (:O¡ i s free to turn on shaft.

3-Q Remove ocknut (:o¡,

lockwasher (29), and spacer (44) from shaft (l). 3-R \^/ith suf f ic¡ent support under the f lange o f bearing retainer (:l ¡ as shown o n Bearing 3 Z ¡ Drawing U631732, press o r drive shaft (l) out of bearing retainer. inner race will not clear seals (14)(15) and will remove seals from bearing retainer (31) when shaft (l) is removed. seal adapter (13).

3-S

Removeseal (14) and "o" ring (12) from oil Removeseal

3-T

l f oil seal sleeve (9) is to b e replaced, remove cap screw (10) frorn shaft (l) a n d Oil seal sleeve (9) is a slip fit o n sl ide oil seal sleeve (9) off shaft (l). shaft (l) and should not require heat o r a puller t o remove i t from the shaft. NSTE A - l f seals (14)(t5)

are t o b e replaced, oil

seal sleeve (9) must b e

replacedo r also, to prevent due to scratches, sleeve (9). present premature in the oil seal seal failure, grooves nicks,

 

3-U

Remove rorr ring ( l I ) from groove in shaft

3-V

Heat, press, o r drive Bearing (lZ¡ inner race is a press fit o n shaft (l)" bearing (lZ¡ inner race off o f shaft (l), as shown on Drawing U631733. A rel ief i s províded between the two bearing inner races. l f heat is used t o remove the bearing (lZ7 inner race, i t must be removed quickly t o Prevent the race from seizing o n the other bearing seat.

3-t/

in the bearing retainer Bearing (32) outer races are a press, or interference fit, (lt¡. Press or drive both bearing (32) outer races out of bearing retainer (lt¡.

3-X

The above procedure disassemble the 122 Brake for replacement rotors,completely or stators. seals, will o f bearings,

(l ).

-6REASSEMBLY Sect on 4 .

For Repl acement of Bea i nqs and/or Sea s Replacement 4-A

Bearing (lz¡ inner races, or cones, are an interference fit on shaft (l), and must be pressed, driven, or shrunk onto shaft (l). A relief ís provided, on the shaft (l), between the two bearing seats for easier instal lation.

4-B

Press both bearing (lZ'¡ outer races or cups into bearing retainer (lt¡. Using feeler gauges, check to see that bearing (lZ¡ outer races are seated against shoulder in bearing retainer (lt ¡ . NoTE A - Do not instal I seals (14) (15).

4-C

Install inner bearing (lZ¡ inner race or cone onto shaft (l), b y any o f t h e above methods, making sure the bearing (12) cone or inner race is seated sol idly against shaft ( l ) shoulder. See Drawing U631734, Sheet l.

4-D

Stand shaft (l) o n rotor end (end with two snap ring grooves) and slip bearing retainer (lt¡ over shaft (l) until bearing retainer is resting o n inner bearing (lz¡ " See Drawins U631734, Sheet l . bearing cavity with a grease NOTE A - T o avoid the time involved in filling cornpressor, pack cavity between bearings with # 2 calcium base grease (Texaco Novatex 2 o r equ va ent ) .

4-E

While rotating the bearing retainer (lt¡ U t hand, press o r drive outer bearing (12) cone o r inner race onto shaft (l), until sl ight drag o r preload is obtained Drawin9 U63 734, Sheet 2 . o n bear ng reta i ner ( l t ¡ . See Drawin9 NOTE A - The bearings must be adjusted so that there is no end play o r movementoo f the shaft ( l ) . A smal preload is desirable. radial movement l f the shaft (l) rotates with the bearing retainer (3t) wfrile standing on end, there is too much preload o n the bearings.

4-f

lnstall spacer (44) and Iockwasher (29) o n shaft (l) with inner tabs located i n slot in shaft (l). The outer tabs o n lockwasher (29) must b e pointing outwa d .

4-G

lnstall locknut (10) and using a spanner wrench tighten locknut (lO¡ until all clearance between spacer (44), lockwasher (29) and locknut (lO¡ i s removed. Check bearing preload again to make sure it has not changed from the previous sett i n g "

 

-7-

4-H

Select a slot i n locknut (30) that i s i n al ign with hole i n shaft (l) and drive roll p¡n (45) i s below outside diameter o f roll pin (4r) into shaft (l) until Bend tab of lockwasher (29) into one o f the slots províded i n locknur (30). the I ocknut (lO¡ .

4-l

l f seal (23) i s t o be replaced remove old seal (23) from bore o f cover plate (lg) and press new seal (23) into bore until seal (23) i s flush with cover plate (19)"

4-J

Install cover pl.ate (19) and secure with eight cap screws (Zl) and lockwashers with (22). Rotate shaft (l) t o make sure locknut (lO¡ does not interfere a shim may be installed exists, l f interference seal (2, o r cover plate (19), (:t ¡ " be[ween cover plate (19) and bearing retainer

4-K

rrorr ring (ll) i n groove in shaft (l) and slip sleeve (9) onto shaft Insrall caP screw (10) lnstall a l igning slot in sleeve with tapped hole in shaft (l)" in shaft (l)"

4-L

CoaL bore o f bear i ng reta i ner ( ¡ I ) *i th a I ight coat of Permatex # l and press sea I ( l 5 ) i nto bore o f bear i ng reta i ner ( ¡ t ) with seai lip i n direction a s shown on assembl y d rawi ng " NSTE A - Avoid damaging o r distorting .

4-M

Always use a flat pressure evenly"

steel

the seal case in this

plate, o r blunt

object,

procedure.

t o distribute

rtotrring (12) into groove of oil seal adapter (13). Coat bore of o i l lnstall seal adapter (13) w¡ttr I ight coat of Permatex No" l, ánd press seal (14) into bore unt i I seal (14) case is seated against shoulder. NgTE A - Seal (14) contains a Teflon seal ing element and ís extremely fingernai I scratches. A smal I suscept ible to damage including I ip is provided on the seal (14) case and pressure should b e seal (14) case" appl íed a t this point only t o prevent distorting

4-N

press oil seal adapter (13) into bore o f bearing retainer oíl seal adapter (13) w¡ll protrude past face o f bearing correctly

(:t¡. The face o f (31) when retainer

installed. tworro"

rings

(16)

into

grooves

in bearing

retainer

(lt¡.

4-0

Install

4-P

(lt¡ housing (25) and secure into bore o f bearing retainer Sl ip bearing retainer (lt¡ should Bearing retainer with eíght cap screws (17) and lockwashers (18). are al igned as shown and rel ief f¡ttings be positioned so that grease f¡tt¡ngs o n assembly print.

4-q

lnstal I 'torr r ing (28) into groove o f stator bear i ng reta i ner hous i ng (25) .

 

-8-

(6) and 'rorr r ing (27)

into

groove of

4-Q Cont nued: may b e encountered when installing NOTE A - Sorne d¡fficulty "orrrings rro" in the grooves, such as the ring coming out of the groove. rrort The ring has been constructed to fit tightly about the inside rtorr diameter of the groove. This prevents the ring from falling out of the groove when the groove is facing downward. D0 N O T attempt stretch theItorrring by hand, or a rupture of the 'rorr ring maytooccur" Completely coat therro" ring with grease, a n d startrrorrring into groove a t one point. Using both index fingers, rrorr press down o n point" ring at the starting f,/hile maintaining rrorr pressure o n the r ing with both f ingers, press rrorr ring into groove from the starting point t o the opposite side. f,/hen the opposite side is reached with both index fingers, therrorrring will have been stretched so that it is longer than the groove. Slowly relax i ndex finger pressure and allow "oil ring to contract into rro'r groove. l f the ring has not been twisted during instal lation, it wi I I remain i n the groove. 4-R

l f snap ring (26), located next to the seals, has been removed, Feplace snap ring (26) í n groove of shaft (l). (6) into bore o f bearing Install stator retainer

housíng

(25) and secure with

two cap screws

(13) and lockwashers.

NOTE A - lt i s possible to assemble the stators and rotors incorrectly for the desired brake rotation. An arrow, or rotation plate (39), shown on the end view o f the assembly drawing, and Iocated o n t h e 'brake housing designates the correct direction of rotation. The right hand rotors and stators, and the left hand rotors and stators must be assembled in the positions shown on the assembly drawing. l f the part numbers are not legible on the parts, Drawing U631735, Sheet I and 2, denotes the difference between a right hand (n.U.) part and a left hand (L.H. ) part. 4-S

Assemble two ke keys ys (4) into shaft

(l)"

NOTE A - The keys should be a tight fit in the shaft keyway, and a sl ip f i in the rotor keyway. Check keys (4) i n rotors (Z)(l) prior t o installation in the shaft (l). l f keys will not sl ide in keyway, dress rotor keyway for proper fit. Do not dress keys. Drive keys into shaft (l) keyway if required. 4-T

Press,drive, or shrink rotor (l) onto shaft (l) until back side of rotor ( 3 ) is about about 2-l/2'r frorn end o f shaft (l), or until rotor (3) i s resting against snap ring (26). CAUTION: l f rotor (3) i s pressed too far onto shaft (l), ¡t w¡ll force snap ring (26) out of the groove allowing the roioi'(¡) face to contact the stator (6) face. Should this happen, loosen the eight cap screws (17) so that the bearing retainer (31) will move out of the bearing r:etainer housing (ZS) .llowing the rotor (3) to mate solidly with stator (6). Force shaft ( l ) back through rotor (3) b y striking rotor end of shaft (l). Retighten eight cap screws (17).

 

-9-

t+-U press, drive, o r shrink rotor (2) onto shaft (l) until snap ring (26) c a n Install snap ring barely be assembled into the groove o n end o f shaft (l). (26) into groove. NSTE A - The 122 Brake does not require adjustment for correct clearance between the rotor and stator faces. The rotor and stator spacing i s premachined brake the factory" Provided rotors (l) atbetween ringsthe(26), the two snap the the shaft are assembled oninto the spacing is correct. 4-V

Remove he two cap sc re\^rs 33) hol d ng stator (6) to (25) and install center ring (8) after "otrring (27) Install twelve cap screws (33), o f center ring (8). nuts (35) to secure center ring (8), stator (6), and (25) together"

the bear ing reta i ner hous n g has been installed i n groove lockwashers (14¡, a n d bear¡ng retainer housing

ring (zil ¡nto groove o f center ring (8) and assemble stator 4-W Install,'o'r into bore o f cenier ring (8). 4-X 4-Y

4-Z

lnstal I 'rorr ring (27) into groove o f end cap (l),

(5)

and I'orr ring (28) into groove

of staton (5). Assemble end cap (7) on the stator (5) and secure by installing twelve caP screws (3, lockwashers (l+¡, and nuts (35) into flange o f center ring (8), stator (5), and end cap (7) " l f feasible, the brake should b e filled cornpletely with water and 5 0 PSI applied for 3 0 minutes to insure against any leaks"

 

- l0 -

N DREASSEMBLY DISASSEMBLY Section 5 .

5-n

For Replacement of Rotors ald Stators Since the instructions, for replacement o f rotors and stators, outlined i n previous sections, they will not be repeated.

5-B

I n order to disassemble the brake to replace the rotors and stators, Section 3 , Paragraphs 3-A t o 3-K.

5-C

T o reassemble the brake for replacement o f the rotors and stators, Section 4, Paragraphs 4-Q to 4-2.

 

- II

has been refer t o refer to

LUBRICATION Sect ion

6-A 6-B

Lubrication

instructions

6.

are included on the.name plate (37) of the Hydromatic

Brake, but they will be repeated for convenience. l,Jhen n use, the seals (14)(ll) and bearings (32), in the brake, should b e lubricated before and after each trip with several strokes of the grease (24) provided" Use No. 2 water compressor through the grease fittings resistant (calcium base) grease (Texaco Novatex 2 o r equivalent).

6-C After repairs have been made t o the Hydromatic Brake that involves removal of the seals (t+)(15) and/or bearings (lZ), ¡t is important that a sufficent quantity o f grease be pumped nto the cavaties around the bearings and seals to fill the cavaties cornpletely before the brake i s placed into operation. crew VJhen epairs are made in a field shop, the shop personnel and drilling may depend upon each other t o fill the brake with grease. Thus, to avoid both the shop personnel a n d any question o r doubt about proper lubrication, drilling crew should check the brake for lubrication" The lack o f proper lubrication will cause premature failure o f the bearings or seals"

 

-12-

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