Union Special 36200UA52, 36200UAE52, 36200UAK52, 36200UE52, 36200UE60 Parts List

ADJUSTINGINSTRUCTIONS

36200 Class

MANUAL NO. PT0106

FORSTYLES

36200UA52	36200UH52	36200UX60
36200UAE52	36200UJ60	36200UY52
36200UAK52	36200UJE60	36200UY60
36200UE52	36200UM60
36200UE60	36200UX52

08/26/03

Manual No. PT0106 llustrated Parts List for 36200 Series Machines

Second Edition Copyright 2002

By

Union Special Corporation Rights Reserved In All Countries

Printed in U.S.A. May 2002

PREFACE

This parts manual has been prepared to assist you in locating individual parts or assemblies on 36200 Series machines.

It is the desire of Union Special that each machine run at its optimum performance. Parts listed in this manual are designed specifically for your machine and are manufactured with utmost precision to assure long lasting service.

This manual has been comprised on the basis of available information. Changes in design and/or improvements may incorporate a slight modification of configuration in illustrations or part numbers.

On the following pages are illustrations and terminology used in describing the parts used on 36200 Series machines.

TERMS

Prices are net cash and subject to change without notice. All shipments are forwarded F.O.B. shipping point. A charge is made to cover postage and insurance.

CONTENTS
PREFACE ....................................................................................................................................................................................................	2
TERMS ........................................................................................................................................................................................................	2
IDENTIFICATIONOFMACHINES ..............................................................................................................................................................	3
TORQUEREQUIREMENTS ...........................................................................................................................................................................	3
DESCRIPTIONOFMACHINES ...................................................................................................................................................................	3
STYLEOFMACHINES ................................................................................................................................................................................	4
SAFETYRULES: ...........................................................................................................................................................................................	5
IDENTIFYINGPARTS ..................................................................................................................................................................................	6
NEEDLES .....................................................................................................................................................................................................	6
APPLICATION ............................................................................................................................................................................................	6
Threading ..................................................................................................................................................................................................	7
Oiling .........................................................................................................................................................................................................	8
ADJUSTINGINSTRUCTIONS ......................................................................................................................................................................	9
SETTINGTHENEEDLEBARHEIGHT&ALIGNMENT ...................................................................................................................................	9
SETTINGTHENEEDLEBARHEIGHT&ALIGNMENT(CONT) ..................................................................................................................	10
ALIGNINGTHECYLINDER ......................................................................................................................................................................	10
SETTINGTHELOOPERTRAVEL ................................................................................................................................................................	10
INSTRUCTIONSFORUSINGSYNCHRONIZINGGAUGE21277CG .......................................................................................................	11
SETTINGTHELOOPERTRAVEL ................................................................................................................................................................	11
TIMINGTHENEEDLESTOTHELOOPER ..................................................................................................................................................	11
TIMINGTHENEEDLESTOTHELOOPER(CONT.) ...................................................................................................................................	12
LOOPERADJUSTMENTS .........................................................................................................................................................................	13
LOOPERADJUSTMENTS(CONT.) ...........................................................................................................................................................	14
SETTINGTHEFRONTNEEDLEGUARD ....................................................................................................................................................	14
SETTINGTHEFEEDDOGS .......................................................................................................................................................................	14
SETTINGTHEREARNEEDLEGUARD .......................................................................................................................................................	15
SETTINGTHESTITCHLENGTH .................................................................................................................................................................	15
DIFFERENTIALFEEDCONTROL ...............................................................................................................................................................	15

2

CONTENTS(CONT.)
SETTINGTHEPRESSERFOOT ..................................................................................................................................................................	15
SETTINGTHEPRESSERFOOT(CONT.) ....................................................................................................................................................	16
SETTINGTHEPRESSERFOOT(CONT.) ....................................................................................................................................................	17
SETTINGTHEKNIFEDRIVELEVER ...........................................................................................................................................................	17
SETTINGTHEKNIFEDRIVELEVER(CONT.) ............................................................................................................................................	18
SETTINGTHETRIMMINGKNIVESFORBUTTSEAMING(STYLES36200UA52,UAE52,UAK52,UJ60,UJE60,UX52,UX60) ................	18
SETTINGTHETRIMMINGKNIVESFORLAPSEAMING(STYLES36200UH52,UAE52,UE52,UE60,UJE60,UM60,UY52,UY60) .........	18
SETTINGTHETRIMMINGKNIVES(ALLSTYLES) .....................................................................................................................................	18
SETTINGTHETRIMMINGKNIVES(ALLSTYLES)(CONT.) ......................................................................................................................	19
NEEDLETHREADADJUSTMENTS ............................................................................................................................................................	19
LOOPERTHREADADJUSTMENT .............................................................................................................................................................	20
COVERTHREADADJUSTMENT ..............................................................................................................................................................	20
TENSIONRELEASE ..................................................................................................................................................................................	20
HUNGFOOTADJUSTMENT ....................................................................................................................................................................	21
SETTINGTHELAPFORMER(STYLES36200UAE52,UE52,UE60,UH52,UJE60,UM60,UY52,UY60) ....................................................	21
LAPSEAMING ........................................................................................................................................................................................	21
OILSIGHTGAUGES,TOPCOVERS&MISCELLANEOUSTAKEUP&EYELETPARTS ..............................................................................	23
MAINFRAME,BUSHINGS&MISCELLANEOUSEYELET&COVERPARTS .............................................................................................	25
MAINSHAFT&MISCELLANEOUSOILING .............................................................................................................................................	27
CRANKSHAFT&NEEDLELEVERPARTS ..................................................................................................................................................	29
TENSIONPARTS ......................................................................................................................................................................................	31
DETACHABLEHEAD,HEADCOVERS,NEEDLEBAR&NEEDLEBARHEAD ...........................................................................................	33
DETACHABLEHEAD,HEADCOVERS,NEEDLEBAR&NEEDLEBARHEAD(CONT.) ............................................................................	35
DIFFERENTIAL&MAINFEEDBARS,FEEDDOGS&FEEDLIFTECCENTRICASSEMBLY .........................................................................	37
FEEDDRIVE ASSEMBLY,FEEDROCKER &LOOPER AVOIDPARTS ....................................................................................................	39
KNIFEDRIVINGPARTS ...........................................................................................................................................................................	41
LOOPERROCKERSHAFT&LOOPERROCKERDRIVEPARTS ................................................................................................................	43
LAPFORMER,MISCELLANEOUSCYLINDERCOVERS,THROATPLATE,&CHAINCUTTINGKNIFE .....................................................	45
CYLINDERBUSHINGS,DIFFERENTIALFEEDCONTROL ASSEMBLY & MISCELLANEOUSCYLINDERCOVERS ..................................	47
PRESSERFEET ..........................................................................................................................................................................................	49
PRESSERFEET ..........................................................................................................................................................................................	51
PRESSERFOOT ........................................................................................................................................................................................	53
PRESSERFOOTSHOECHART .................................................................................................................................................................	54
PRESSERFOOTSHOECHART .................................................................................................................................................................	55
THREADSTAND .......................................................................................................................................................................................	57
MISCELLANEOUSGAUGES&TAPEREELPARTS ...................................................................................................................................	59
THREADLUBRICATOR .............................................................................................................................................................................	61
NUMERICALINDEXOFPARTS ...............................................................................................................................................................	62
NUMERICALINDEXOFPARTS ...............................................................................................................................................................	63

IDENTIFICATIONOFMACHINES

Each UNION SPECIAL machine is identified by a style number, which is stamped into the style plate affixed to the middle of the machine under the tension assembly.

The serial number is stamped in the casting at the right rear base of the machine.

TORQUEREQUIREMENTS

Torque (measured in inch-pounds) is a rotating force (in pounds applied through a distance by a lever (in inches or feet). This is accomplished by a wrench, screwdriver, etc. Many of these devices are available, which when set at the proper amount of torque will tighten the part to the correct amount and no tighter.

All straps and eccentrics should be tightened to 19-21 inch-pounds (22-24cm/kg) unless otherwise noted. All other nuts, bolts, screws, etc. should be tightened by hand as tightly as possible, unless otherwise noted.

DESCRIPTIONOFMACHINES

Universal style, Feed-off-the-arm, high speed, medium throw, five or six thread machine. There are four needles and one retainer abreast, one looper and a manually adjusted differential feed control. There is an enclosed automatic lubricating system, filter type oil return pump, visual sight oil action and supply gauges. The maximum work space in front of the needles is 8 inches (203.2mm). Recommended maximum speed - 4200 R.P.M. for all Styles. Machines can be used on either table or pedestal mount.

3

	STYLEOFMACHINES
36200UA52	FLATSEAMER: For simultaneously trimming right and left plies and flatseaming knit undergarments, infants
	clothing and similar light to medium weight materials where closing elastic is required.
	Seam specifications 607-FSa-1. Components produce a .205" (5.2mm) wide seam.
36200UAE52	FLATSEAMERANDLAPFLATSEAMER:Sameas36200UJE60exceptfittedwithcomponentstoproducea.205"
	(5.2mm) wide seam.
36200UAK52	LAPFLATSEAMER: Fortrimmingrightplyonlyandlapseamingknitundergarments,infantsclothingandsimilar
	light to medium weight materials where closing elastic is required. Seam specifications 607-LSa-1.
	Components produce a .205" (5.2mm) wide seam.
36200UE52	LAPFLATSEAMER: Forsimultaneouslytrimmingrightandleftpliesandlapseamingmen'sandwoman'sbriefs,
	undergarments, sweatpants, sweatshirts, infant sleepers and similar garments. Flat sewing parts with lap seam
	presser foot and lapformer. Seam specifications 607LSa-1. Components produce a .205"(5.2mm) wide seam.
36200UE60	LAP FLATSEAMER: Same as 36200UE52 except fitted with components to produce a .236" (6.0mm) wide seam.
36200UH52	LAPFLATSEAMER:Forsimultaneouslytrimmingrightandleftpliesandlapseamingmen'sbriefsshorts,andsimilar
	garments made of light to medium weight material where crossing elastic and heavy seams, such as leg
	bindingsisnecessary.Therightsectionofthesewingpartsareraised.050"(1.27mm)toassureabetterlapseam.
	Seam specifications 607-LSa-1. Components produce a .205" (5.2mm) wide seam.
36200UJ60	FLATSEAMER: Same as 36200UA52 except fitted with components to produce a .236" (6.0mm) wide seam.
36200UJE60	FLATSEAMER: For simultaneously trimming right and left plies and flatseaming knit undergarments, infants
	clothing and similar light to medium weight materials where closing elastic is required.
	Seam specifications 607-FSa-1.
	LAPFLATSEAMER:Forsimultaneouslytrimmingrightandleftpliesandlapseamingmen'sbriefsshorts,andsimilar
	garments made of light to medium weight material where crossing elastic and heavy seams, such as leg
	bindings is necessary. Seam specifications 607-LSa-1. (Machine includes sewing parts to sew both FSa-1 Flat
	(butt) seam and LSa-1 Lap seam.)
	Components produce a .236" (6.0mm) wide seam.
36200UM60	LAP FLATSEAMER: Same as 36200UH52 except fitted with components to produce a .236" (6mm) wide seam.
36200UX52	TAPESEAMER:Simultaneouslytrimsrightandleftplies,joinsandtapesthefrontofknitbriefsinoneoperation.Fitted
	with a taping foot without coverthread that has the tape slot in front of the needle hole and folder that takes a
	3/4" (19.0mm) knitted strip, cut with the wale, to produce a 7/16" (11.1mm) wide finished tape. Seam
	specifications 607(mod)-LSz-1(mod). Seam width is .205" (5.2mm).
36200UX60	TAPE SEAMER: Same as 36200UX52 except fitted with components to produce a .236" (6.0mm) wide seam.
36200UY52	LAPFLATSEAMER:Forsimultaneouslytrimmingrightandleftpliesandlapseamingoperationsonthelegopenings
	ofknittedboxerstylebriefsusingwideknittedcallerettematerial.Flatsewingpartswithspeciallapseampresser
	foot and special lap former. Fitted with special thread bracket, long feed dogs," T" shaped yielding section with
	light weight spring, light presser bar spring and wear plates on presser foot.
	Seam specifications 607LSa-1. Components produce a .205(5.2mm) wide seam.
36200UY60	LAP FLATSEAMER: Same as 36200UY52 except fitted with components to produce a .236" (6.0mm) wide seam.

4

SAFETYRULES:

1.Before putting the machines described in this manual into service, carefully read the instructions. The starting of each machine is only permitted after taking notice of the instructions and by qualified operators.

IMPORTANT! Before putting the machine into service, also read the safety rules and instructions from the motor supplier.

2.Observe the national safety rules valid for your country.

3.The sewing machines described in this instruction manual are prohibited from being put into service until it has been ascertained that the sewing units which these sewing machines will be built into, have conformed with the EC Council Directives (89/392/EEC, Annex II B).

Each machine is only allowed to be used as foreseen. The foreseen use of the particular machine is described in paragraph “STYLES OF MACHINES” of this instruction manual. Another use, going beyond

the description, is not as foreseen.

4.All safety devices must be in position when the machine is ready for work or in operation. Operation of the machine without the appertaining safety devices is prohibited.

5.Wear safety glasses.

6.In case of machine conversions and changes all valid safety rules must be considered. Conversions and changes are made at your own risk.

7.The warning hints in the instructions are marked with one of these two symbols:

8.When doing the following the machine has to be disconnected from the power supply by turning off the main switch or by pulling out the main plug:

8.1When threading needle(s), looper, spreader etc.

8.2When replacing any parts such as needle(s), presser foot, throat plate, looper, spreader, feed dog, needle guard, folder, fabric guide etc.

8.3When leaving the workplace and when the workplace is unattended.

8.4When doing maintenance work.

8.5When using clutch motors without actuation lock, wait until the motor is stopped totally.

9.Maintenance, repair and conversion work (see item 8) must be done only by trained technicians or special skilled personnel under consideration of the instructions.

10.Any work on the electrical equipment must be done by an electrician or under direction and supervision of special skilled personnel.

11.Work on parts and equipment under electrical power is not permitted. Permissible exceptions are described in the applicable sections of standard sheet DIN VDE 0105.

12.Before doing maintenance and repair work on the pneumatic equipment, the machine has to be disconnected from the compressed air supply. In case of existing residual air pressure, after disconnecting from compressed air supply (i.e. pneumatic equipment with air tank), the pressure has to be removed by bleeding.

5

ILLUSTRATIONS

Thismanualhasbeenarrangedtosimplifyorderingrepairparts. Explodedviewsofvarioussectionsofthemechanismareshown so that the parts may be seen in their actual position in the machine. On the page opposite the illustration will be found a listing of the parts with their part numbers, description and the number of pieces required in the particular view being shown.

Numbers in the first column are reference numbers only, and merely indicate the position of the part in the illustration. The reference number should never be used in ordering parts. Always use the part number listed in the second column.

Component parts of sub-assemblies which can be furnished for repairs are indicated by indenting their descriptions under the description of the main sub-assembly. As an example refer to the following text.

9.	29126 EC	Upper Looper Drive Shaft Assembly .................................................................................	1
10.	22503F	Screw .................................................................................................................................	1
11.	39543E	Cam Follower Locking Clamp .....................................................................................	1

It will be noted in the previous example that the cam follower, bushing and cam guide and the upper looper drive shaft are not listed. The reason is that replacement of these parts individually is not recommended, so the complete upper looper drive shaft assembly should be ordered.

When a part is common to all machines covered in this manual, no specific usage will be mentioned in the description. However, when the parts for the various machines are not the same, the specific usage will be mentioned in the description and, if necessary, the difference will be shown in the illustration.

A numerical index of all the parts shown in this manual is located at the back. This will facilitate locating the illustration and description when only a part number is known.

IDENTIFYINGPARTS

Where the construction permits, each part is stamped with its part number. On some of the smaller parts and on those where construction does not permit, an identification letter is stamped in to distinguish the part from similar ones.

PLEASENOTE: Part numbers represent the same part, regardless of which manual they appear. On all orders please include part number, name and style of machine for which the part was ordered.

NEEDLES

Each needle has both a type and size number. The type number denotes the kind of shank, point, length, groove, finish and other details. The size number, stamped on the needle shank, denotes the largest diameter of the blade measured between the shank and the eye. Collectively, the type number and size number represent the complete symbol which is given on the label of all needles packed and sold by Union Special.

TYPE		DESCRIPTION
118GAS	Extra short, double groove, struck groove, .060" diameter shank, chromium plated needle.
	Sizes available 065/025, 070/027, 075/029, 080/032, 090/036.
118GBS	Extra short, single groove, struck groove, spotted .060" diameter shank, chromium plated needle.
	Sizes available 075/029, 080/032.
118GHS	Same as 118GBS, except with ball point. Sizes available 070/027, 075/029, 080/032.
118GJS	Same as 118GHS, except with tapered blade and ball point. Sizes available 065/025, 070/027, 075/029.
118GKS	Round shank, round point, extra short, double groove, struck groove, spotted, chromium plated needle.
	Sizes available 070/027, 075/029, 080/032.
36211	Retainer needle, no scarf, chromium plated. Sizes available 065/025, 070/027, 075/029.
		APPLICATION
118GKS	075/029	Recommended forStyles:36200UA52,UAE52,UE52,UE60,UH52,UJ60,UJE60,UM60,UY52,UY60.
118GKS	080/032	Recommended for Styles: 36200UX52, UX60.
118GAS	065/025	Recommended for Style: 36200UAK52.

When changing the needle, make sure it is fully inserted in the needle driving arm before the clamp screw is tightened.

To have needles promptly and accurately filled, an empty package, a needle sample, or the type and size number should be forwarded. Use the description on the label. A complete order should read as follows: "100 needles, type 118 GKS, size 075/029".

6

THREADING

7

OILING

Referring to Fig. 1, fill the machine at (A) and (B). Oil capacity of class 36200 is 2.5 ounces in the bottom reservoir and 2.5 ounces in the top reservoir. Use a straight mineral oil, Saybolt viscosity of 90 to 125 seconds at 100° Fahrenheit. The oil level is checked at gauges (C) and (D). Maintain oil level between the red lines of these gauges.

This machine is automatically lubricated by a continuously driven rotary pump. Oil flow can be observed through windows (A) and (B). When installing a new machine or starting a machine that has been idle for some time, priming may be necessary. Remove plug screws (E), fill holes with recommended oil and replace screws BEFORE operating. If oil does not flow while machine is running, pump is inoperative.

Remove screw 22733B (F, Fig. 1 inset) to drain oil from the top reservoir. To drain oil from bottom reservoir remove screw 999-196 (G).

Occasionally, it is necessary to oil the linkage of the presser foot, the knife holder shank (36273A), guide collar (36273K) and the various links and bearings of the presser foot lifting mechanism and thread tension release.

FIG. 1

8

ADJUSTING INSTRUCTIONS

Instructions stating direction or location, such as right, left, front or rear of the machine are given relative to the operator's position at the machine unless otherwise noted. The handwheel rotates clockwise in operating direction.

SETTING THE NEEDLE BAR HEIGHT & ALIGNMENT

Insert the first (left) and fourth needles into the needle head. The needles for this Class of machine are made with two flats on the front of the shank. This will enable you to correctly position the needles in the needle head. Make certain the needle shank is fully inserted and that the screw is seated firmly on the flat.

To position the needle head square with the throat plate, use the upper knife or a straight edge to align the needles with the cross grooves in the throat plate. (See Fig. 2)

Refer to table 1 for the dimension from the fourth (lowest) needle to the surface of the throat plate and for the number of the needle bar height gauge.

FIG. 2

	DIMENSION FROM	NEEDLE	NEEDLE	Position the needle bar at its highest
	4TH (LOWEST)	BAR	HEIGHT	point of travel. Loosen needle bar clamp
STYLE	NEEDLE TO	HEIGHT	GAUGE	screw (A, FIG.3) & use the specified
	THROAT PLATE	GAUGE	STEP	needle bar height gauge (B) to achieve
				the desired height dimension from the
	SURFACE	NUMBER	MARKED
				fourth (lowest) needle (C) to the throat
UA52, UAE52, UE52,				plate surface (D). Tighten clamp screw
UAK52, UH52,	17/32" (13.5MM)	21227BU	.531	(A) and recheck setting. Care must be
UX52, UY52				taken not to disturb the needle head
				alignment while making the adjustment.
UE60, UJ60, UJE60,
	1/2" (12.7MM)	21227DS	.500	Add the two middle needles and the
UM60, UX60, UY60				retainer.

TABLE1

NOTE: Styles 36200UH52 and 36200UM60 have a .050" (1.3mm) step on the right side of the throat plate. When setting the needle height measure from the left side or lowest part of the stepped plate.

CAUTION: If the needle head has been replaced it must be torqued to 17 in. lbs. (20cm/kg). Or until torque bar (21227AR), inserted into cross hole in the needle bar, bends. It will not seat against the bottom of the needle bar. After tightening, check for expansion of the needle bar by positioning it up into the lower bushing hole. If the bar has expanded it will bind in the bushing. The bar must be replaced or lapped to reduce the bell shape. Align and set needle bar height as described above.

FIG. 3

9

SETTING THE NEEDLE BAR HEIGHT & ALIGNMENT (CONT)

Correct spacing of the needles in the throat plate stitch tongue is imperative to proper sewing conditions. Improper relationship of the needles to the stitch tongue often results in malformed stitches. When replacing the stitch tongue make sure needles are aligned properly (see Fig. 4).

If the stitch tongue and throat plate are properly seated and the needle position is not correct, the cylinder has probably been forced out of position. If realignment is necessary, refer to the section "Centering the Cylinder".

When the needles are correctly positioned in the throat plate the space to the left of the needles in the stitch tongue slot is .006" (0.15mm) more than the space to the right (see Fig. 4). Actually, the needle bar is centered to the throat plate and cylinder, however, to provide clearance on the left side of the needle for the needle loops

FIG. 4 passing around the looper during the down stroke of the needles, the slots in the stitch tongue are made off-center to the left. Accurate positioning of the needles may be obtained by repositioning the cylinder.

ALIGNING THE CYLINDER

Remove the top front cover and gasket from the main frame. Loosen cylinder holding screw (A, Fig. 5). Turn eccentric screw (B) clockwise to move the cylinder so the needles are closer to the right side of the stitch tongue. Turn the stud counterclockwise to locate the needles closer to the left. Tighten screw (A) and recheck settings.

NOTE: The cylinder may not move freely when the eccentric is turned because the joint sealant compound has set. Light tapping with a wooden block at the joint or midpoint of the arm may be necessary.

FIG. 5

SETTINGTHELOOPERTRAVEL

Attach looper travel gauge plate (A, Fig. 6) to the rear of the cylinder arm. Set the bottom of the gauge so it is approximately horizontal and lock lightly in place with screw (B) directly underneath. Attach looper travel gauge pointer (C) to the looper using the left needle guard screw hole. Turn the handwheel in operating direction until the looper is positioned to the far right. Set pointer (C) at zero degrees by rotating gauge plate (A) and lock in place. Continue turning the handwheel until the pointer stops. If the looper travel is correct the pointer should indicate 55°40'.

FIG. 6

10

SETTINGTHELOOPERTRAVEL

To adjust the looper travel remove the top front cover and the end cover. Loosen left-handed locknut (A, Fig. 7) and turn screw (B) clockwise to decrease the looper travel or counterclockwise to increase the looper travel. Tighten locknut (A) and recheck setting.

NOTE: After setting the looper travel the machine must be checked for synchronization.

FIG. 7

TIMING THE NEEDLES TO THE LOOPER

To visually check the timing of the needles to the looper, turn the handwheel in operating direction until the needle bar has reached its lowest position and has risen 5/32" (4.0mm). At this time the looper point should appear at the same relative position to the needles whether rotation of handwheel is clockwise or counterclockwise.

INSTRUCTIONS FOR USING

SYNCHRONIZING GAUGE 21277CG

Turn the handwheel until the needle bar is at its lowest point. Loosen presser bar regulating screw (A, Fig. 8) and insert needle bar setting block (B) under the head of the screw (A) with stop screw (C) above needle bar (D). Tighten screw (A).

The long portion of the looper clamp and height gauge (E, Fig. 8) laid on its side is the 5/32" (4.0mm) gauge used to set the distance between stop screw (C) and the top of the needle bar (D) at its lowest position. Tighten nut (F) to clamp stop screw (C) into place.

FIG. 8

11

TIMING THE NEEDLES TO THE LOOPER (CONT.)

Attach the looper clamp and height gauge (A, Fig. 9) to the heal of the looper by tightening screw (B). Turn the handwheel slowly in a clockwise direction until needle bar (C) touches stop screw (D). Loosen screw (E) and set synchronizing gauge rod (F) so the flat end is on one of the lines in the center of the block (G). Tighten screw (E).

Turn the handwheel in the opposite direction until the needle bar touches stop screw (D, Fig. 9). Synchronizing rod (F) should come to the same line on block (G). The difference must not exceed one line.

If the setting cannot be achieved, main shaft coupling (A, Fig. 10) must be repositioned. Remove the crank chamber cover and gasket. Loosen the three coupling screws (B). If synchronizing rod (F, Fig. 9) moves more to the right while the handwheel is rotated in a clockwise direction, the looper is too fast and the main shaft should be retarded. If the rod moves more to the right when the handwheel is rotated in a counterclockwise direction the looper is too slow and the mainshaft should be advanced. Tighten screws (B, Fig. 10).

NOTE:	If the stationary Knife interferes with the syn-
	chronizing rod (F) remove the knife to make
FIG. 9	the adjustment.

FIG. 10

12

FIG. 11

FIG. 12

LOOPERADJUSTMENTS

Looper Avoid

The looper avoid is set at .094" (2.4mm). Using gauge no. 21227BV (A, Fig. 11), position looper shaft (B) fully to the rear (away from operator) and insert the gauge through the looper shaft hole in the end of the cylinder until the plunger is fully extended from the gauge. Tighten clamp screw (C). When the looper is positioned fully to the front, the end of the plunger should be flush with the end of the gauge. The motion of the plunger from the extended position to flush represents .094" (2.4mm) travel. To adjust the looper avoid remove the cylinder cover and loosen screw (A, Fig. 12) with TT-85 wrench. Raise the ball joint to shorten the avoid motion or lower it to lengthen the avoid motion. Tighten screw (A). Reposition gauge (A, Fig. 11) and recheck the setting.

Vertical Adjustment of Looper

A clearance of .018" to .025" (0.46mm to 0.64mm) should be maintained between the top of the looper and the bottom of the stitch tongue. Loosen screw (C, Fig. 13) and turn screw (D), directly under the looper, up or down as required. Make sure the looper is seated and tighten screw (C). Check for clearance.

NOTE: On machine style 36200UAK52 looper sits on looper holder.

FIG. 13

13

FIG. 15

FIG. 16

FIG. 17

LOOPER ADJUSTMENTS (CONT.)

Looper Gauge

Turn the handwheel in operating direction until the looper has traveled fully to the left. Loosen screw (A, Fig. 15) and move the looper holder to the right or left until the distance from the point of the looper to the center of the first (left) needle is 3/16" (4.8mm). Clearance between the looper point and the scarf of the needle must not exceed

.002" (0.05mm). Turn screw (B) until the .002" (0.05mm) dimension is achieved. Tighten screw (A).

For all styles except 36200UAK52 which is 1/8" (3.1mm).

NOTE: Looper gauge may need to be increased or decreased slightly to obtain a proper stitch.

SETTING THE FRONT NEEDLE GUARD

Install needle guard (A, Fig. 16) and position it to touch but not deflect the first needle. Slowly turn the handwheel in operating direction and check the needles to make sure they are not pinched

between the looper and the needle guard.

NOTE: On machine style 36200UAK52 may deflect slightly

SETTING THE FEED DOGS

Preliminary Setting:

Install the differential feed dog (A, Fig. 17) with screw (B). Attach rear needle guard (C) to main feed dog (D), pushing in fully to the rear and tighten screw (E). Install main feed dog with screw (F).

As a starting point loosen screw (G) and set the slot in feed bar eccentric stud (H) in a horizontal position. Tighten screw (G). At the highest point of travel feed dogs (A and D) should be the depth of one full tooth above throat plate

(J). Loosen screws (B and F) and adjust the height of each feed dog by moving them up or down in the elongated slot of the shank. Tighten screws (B and F). Loosen screw

(G) and turn stud (H) until the top of the feed dogs are parallel to the throat plate. Rotating stud (H) will simultaneously level both feed dogs.

NOTE: When setting eccentric stud (H) if turned clockwise feeddogs should go up if turned counterclockwise feed dogs should go down.

Final Setting:

Both the main and differential feed dogs may be individually adjusted to height. Main feed dog (D) at its highest position should rise above the top of the throat plate the depth of one full tooth when the normal presser spring pressure is applied. The differential feed (A) may then be raised to it.

14

SETTING THE REAR NEEDLE GUARD

Set rear needle guard (A, Fig. 18) so it touches the first (left) needle (B) but does not deflect. Check the guard position to the other needles to avoid pinching. Loosen screw (C) and reposition guard (A) as necessary. Tighten screw (C).

SETTINGTHESTITCHLENGTH

This machine is designed to sew 10 to 16 stitches per inch. The normal factory setting is 12 stitches per inch. To change the stitch length remove the plug screw located directly above the cylinder side cover. Loosen screw (A, Fig. 19) in lever (B) and move up to increase the stitch length or down to decrease the stitch length. Tighten screw (A) and replace the plug screw.

CAUTION:	If the stitch length is changed the rear needle
	guard setting must be checked and readjusted
	if necessary. Failure to do so may result in
FIG. 18	needle and/or parts breakage.
CAUTION:	When making stitch length adjustment do not
	exceed maximum recomended stitch length
	due to possible part damage.

FIG. 19

FIG. 20

DIFFERENTIALFEEDCONTROL

The amount of differential feed is controlled by lever (C, Fig. 19). The adjusting plate is numbered from 1 to 9. When the lever is set from numbers 1 to 4 reverse differential or stretching occurs. The numbers from 4 to 5 produce equal feed stitching while numbers 5 to 9 produce a gathering stitch. The two stop screws (D) can be set to limit the movement of lever (C) or lock the lever in one position.

SETTINGTHEPRESSERFOOT

Remove the presser bar regulating screw and the presser spring. Raise the needle bar to its highest position and remove the retainer. As the foot is slipped under the needles, swing the upper knife into the opening on the right side of the foot and slide the linkage onto the hook driving sleeve. Insert the presser bar through the linkage and into the presser foot shank. Tighten presser foot screw. With the presser bar inserted properly into the presser foot, position the foot left to right so the finger of cover thread carrier (A, Fig. 20) is between the first and second needles. Set presser bar guide (B, Fig. 20 Inset) so foot will not move. Set right presser foot guide (C) and left presser foot guide (D) to maintain setting. Loosen presser bar guide screw (E Fig. 20 Inset) and check to see that foot has vertical freedom with no right to left play, no bind. Put the needle bar is in its lowest position, and set 1/32"(0.8mm) above head of presser bar guide stud. Tighten presser bar guide screw (E).

15

SETTING THE PRESSER FOOT (CONT.)

Turn the handwheel in operating direction until link (A, Fig. 20) has traveled fully to the front. There must be a 1/64" (0.4mm) clearance between link (A) and the back of needle head (B) when link (A) starts to jackknife. Loosen screw (C) and rotate driving sleeve (D) to position link (A). Tighten screw (C).

Add the cover thread hook(F) and cover thread carrier(E) if they are not in place. Position carrier so the thread loop will be carried behind the first two needles. There should be a minimum 1/64"(0.4mm) clearance between the hook and the carrier at their closest position.

FIG. 21

Replace the presser spring and the presser bar regulating screw. Loosen screws (A, Fig. 22) in lifter lever link assembly (B) and position lever (C) so there is 1/32" (0.8mm) clearance between it and presser bar guide (D) when the feed dogs are below the throat plate.

FIG. 22

When the hook swings to the left it will pass over the cover thread. On its return travel, the thread will "pop" into the slot on the underside of the hook and is carried to the right. This thread forms a triangle for the third and forth needle threads to pass through. As the cover thread "pops" into the slot it must cast-off the high point of take-up (A, Fig. 23) at the same time. Loosen the two screws in the cover thread take-up and reposition if necessary. If there is difficulty in making this adjustment, check the thread tension and make sure the hook point has an extremely high polish and the angle is correct. Due to clearance requirements bending the hook is not recommended.

FIG. 23

16

FIG. 24

FIG. 26

SETTING THE PRESSER FOOT (CONT.)

FIG. 25

The presser foot lifter stop plunger must be set so the cover thread hook will not hit the bottom of the needle head as the presser foot is being lifted. Position the needle bar to its lowest point of travel. Loosen nut (A, Fig. 24) and turn plunger (B) clockwise until it strikes the crankshaft counterweight. While applying pressure to lifter (C) to lift the foot, back out of the plunger until the distance between the hook and the underside of the needle head is 1/64" (0.4mm) (see Fig. 25). Tighten nut (A, Fig. 24).

To adjust the position and tension of frame chip guard (A, Fig. 26), slightly loosen screw (B) and turn washer (C) with 21388Y spanner wrench until spring (D) snaps the guard into the closed position. Tighten screw (B). A light resistance should be felt when opening the guard.

SETTINGTHEKNIFEDRIVELEVER

Position the needle bar at the bottom of its stroke. Measure from the top of the needle bar to the top of the casting to obtain dimension "A" (see Fig. 27).

	Position the needle bar at the top
	of its stroke. Measure from the top
	of the needle bar to the top of the
	casting to obtain dimension "B".
	Subtract dimension "A" from di-
	mension "B" and divide by two. Add
	this number to dimension "A" to
	obtain "C". Set a caliper to the "C"
	dimension and turn the handwheel
	in operating direction until the
FIG. 27	height of the needle bar is at the
	"C" dimension

17

SETTING THE KNIFE DRIVE LEVER (CONT.)

At this time the knife drive lever should be in the 6 o'clock position. If adjustment is necessary, loosen screws (A, Fig. 28) in the needle lever and reposition knife drive lever (B) to the 6 o'clock position. Tighten screws (A). The dimension between the centerline of right and left knife drive connection ball joints (C and D) must be 2 27/32" (72.2mm). Loosen left hand thread nut (E), right hand thread nut (F) and turn connecting rod (G) until dimension is achieved. Tighten nuts (E and F).

FIG. 28

SETTING THE TRIMMING KNIVES FOR BUTT SEAMING (STYLES 36200UA52, UAE52, UAK52, UJ60, UJE60, UX52, UX60)

To make the adjustments for a flat, butt seam, position lower knife (A, Fig. 29) in the foot so it extends 1/32" to 1/16" (0.8mm to 1.6mm) past the right side of the left toe

(B) (approximately between the second and third needles). Loosen screw (C) and move knife in or out as required. Tighten screw (C) securely.

		SETTING THE TRIMMING KNIVES
		FOR LAP SEAMING
		(STYLES 36200UH52, UAE52, UE52, UE60, UJE60,
		UM60, UY52, UY60)
		To make the adjustments for a lap seam, position lower
		knife (A, Fig. 29) in the foot so it extends 1/64" (0.4mm)
		past the right side of the left toe (B) (approximately even
		with the first needle). Loosen screw (C) and move knife
		in or out as required. Tighten screw (C) securely.
		(ALLSTYLES)
		Turn handwheel in operating direction until knife driving
		bracket (D) is positioned to the extreme left. At this time
		the front edge of both knives should be parallel with
	FIG. 29	each other and the upper knife cutting edge should
		overlap lower knife cutting edge by 1/64" (0.4mm)

18

SETTING THE TRIMMING KNIVES

(ALL STYLES) (CONT.)

FIG. 30

FIG. 32

FIG. 33

If necessary loosen screw (A, Fig. 30) and move knife (B) to the right or left as required. Tighten screw (A).

If the shear angle between the knives has to be changed, raise or lower screw (C, Fig. 30) in knife holder shank (D).

		To set spring pressure be-
		tween the knives	loosen
		screw (A, Fig. 31) and raise
		knife holder guide collar (B)
		1/8" (3.2mm) from knife driv-
	FIG. 31	ing bracket (C).	Tighten
		screw (A).
NOTE:	More or less spring pressure may be required depend-
	ing on the type of material being sewn. Also, both

knives may have to be repositioned after a trial seam is made so there is an equal margin from the edges of the two plies to the center rows of stitching.

NEEDLETHREADADJUSTMENTS

Four needle thread strike-off pins (A, Fig. 32) are provided for independent needle thread control. Level the take-ups to the height of the thread in the needle lever eyelet at its lowest position. Raise the first take-up (nearest the operator) 1/8" (3.2mm) and the second take-up 1/16" (1.6mm). Further adjustment may be necessary to obtain proper needle loop size so skipped stitches may be avoided.

Set the four frame needle thread eyelets (B, Fig. 32) eye with the eyelets in holder (C). Adjust as necessary so the needle thread loops around the looper will remain firm and not seek random positions when the needle bar descends.

Unlocking spring (A, Fig. 33) provides a propor tional amount of pull-up of the needle threads when the machine is reversed for unlocking the stitch so the loops will not form on the front of the needles and become caught by the looper.

NOTE: Unlocking spring is only used when starting and stopping on the material.

Turn screw (B) up or down so unlocking spring (A) will have 1/8" (3.2mm) drop from the bottom of the thread holes to the top of screw (B). Loosen screw (C) and turn knurled knob (D) to adjust the spring tension. Tighten screw (C).

Tension of the six threads is individually controlled. The needle tension is seldom uniform; the first needle thread having more tension than the other three. Use only enough tension to pull up the stitch. A wellbalanced stitch will have the first and fourth needle loops pulled up and the second and third needle loops small and even.

19

LOOPERTHREADADJUSTMENT

Loosen screws (A, Fig. 34) and position looper thread cast-off (B) flush with the right end of cast-off support plate (C). Tighten screws

(A). Loosen screws (D, Fig. 34 inset) and time take-up (E) so the thread will cast-off when the needle bar has descended 7/64" (2.8mm) from its highest position. When thread eyelets (F) are moved further to the left the amount of thread pull-off will increase.

FIG. 34

COVER THREAD ADJUSTMENT

Loosen screw (A, Fig. 35) and set the lower edge of cover thread take-up eyelet (B) so its 3/32" (2.4mm) above the surface of cast-off plate (C). Tighten screw (A). As the cover thread hook moves to the left over the cover thread and the needle bar starts to rise, the cover thread must "cast-off" from the high point of take-up (D). Loosen screws (E) and adjust take-up (F) accordingly. make sure that takeup (F) is centered in cast-off plate slot (C) and take-up eyelet (B) is centered to take-up (F). Tighten screws (E).

FIG. 35

TENSIONRELEASE

The tension releaseshould start to function when the presser foot has raised approximately 1/32" (0.8mm) above the surface of the throat plate and be entirely released when the presser foot has reached its highest position. Insert a large screwdriver into slot on the right end of shaft (A, Fig. 36), loosen screw (B) in lifter lever (C) and turn the screwdriver to raise or lower pins (D). Tighten screw (B).

NOTE:	Make sure the 1/32" (0.8mm) clearance between the
	presser bar lifter lever and presser bar guide has been
	maintained. Refer to Fig. 22 if readjustment is neces-
	sary.

FIG. 36

20