Brother KG-88 Service Manual Download Page 1 | Manualshive

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Summary of Contents for KG-88

Page 1: ...Service Manual for G Carriage MODEL KG 88 89 ...

Page 2: ...8 89 2 3 Table for trouble shooting 3 4 Disassembling the G carriage 6 5 Assembling the G carriage 14 6 How to adjust the G carriage 27 7 Disassembling and assembling the adaptor 28 8 Disassembling and assembling the sensor for yarn breakage 29 9 Trouble shooting 30 ...

Page 3: ... garter stitch pattern Combination pattern of plain and purl Castmg ff Same as the kn1tting machine 4 Needle selection The needle is not selected preliminarily and the knitting is done while selecting the needle at the same row S Safety device against trouble 6 Adaptor r 7 Power consumption r 8 Weight t Sensor of yarn breakage Overload automatic stop Output of adaptor variable between 11 and l V 2...

Page 4: ... machme 4 Magnet Holder C134 No need to attach No need to attach I DC cord Adaptor A18 35 DC cord 1 so long that adaptor can be located on floor no place provided for attachmg the adaptor on knitting machine I Racks D21 23 Rack R M L attached parts for feeding G carriage Not provided No need to attach becau e it has a butiHn rack at rear rail of knitting machine 2 Tripper D14 18 Knit Leader trippe...

Page 5: ...3 13 Feed positioning plate does not move u and_down 13 Replace gear mount assembly 14 Feed plate does not move smoothly and laterally 14 Replace step feeder 15 Height and width of extension rail are improper 15 Bend to adjust Carriage moves without 1 Feed chanse pawl comes ofl stop needle it should be I Bend and adjust feed change plate See Trouble shooting automatic return caught on page 35 2 fe...

Page 6: ...he shaft 3 Reaseemble normally with the G 4 Reader spring is not smoothly put to reader 4 Replace reader spring needle are made by the 5 Change lever for knitting needle is not smooth and 5 Adjust change lever level See Trouble shooting KH needle level on page 37 6 Change lever rotates at shaft part 6 Replace change lever Stop key does not func 1 Distance between sensor and magnet is too far 1 Adj...

Page 7: ...hen you use improper yarn which cannot be knitted with the G carriage the carriage will be damaged which leads to drop stitch See Knitting yarn on page of the manual Note 4 After you hold up the front part of the carriage and move just for no load running be sure to put it down slowly at the position A where no fabric is hunged otherwise the stitch cam guide plate might be damaged Note 5 _ c _ Whe...

Page 8: ...Remove the snap ring E 3 to detach the row counter connect ing plate See Fig on page 25 6 Remove the carriage cover 7 The pattern selector knob comes off 8 The aut return knob comes off 9 The direction change knob comes off Removing the G needle I0 Pull out the G needle Removing the rubber wheel Names ofParts Knll leader tripper Row counter tripper Set screw to fix G carriage foot 2 pes Set screw ...

Page 9: ...es Connector Snap ring E Q 2 pes 1 Direction change lever A assembly Direction change lever B assembly Snap ring E 4 pes Screw to tix gear mount 3 pes Upper plate assembly Spring for change plate Change plate R for aut return Qi Spring for change piate Change plate L for aut return G needle tilting cam G needle tilt lever assembly Gear mount assembly Row counter connecting plate Bevel gear bevel g...

Page 10: ...change plate assembly and the G needle operation cam 31 Pull out the yam feeder change plate by turning its shaft part 32 PuJl out the G needle operation cam Names of Parts Snap nng E 4 cl washer Latch presser lever Yam feeder change cam spring screw to fix yam feeder change cam spring Yam feeder change plate G needle operation cam Screw for step feeder 2 pes Step feeder Removing the step feeder 8...

Page 11: ...r for yarn feeder change cam 2 pes 1 Yam feeder change cam Collar 2 pes Pattern selector cam I Screw for G needle operation lever Washer for G needle operation lever Operation lever for G needle Screw for knitting needle operarion lever Washer for knitting needle operation lever Knitting Needle operation lever Removing the operation lever for G needle assembly 39 Remove the screw and washer for th...

Page 12: ...ion shaft 47 Pull out the G needle operation shaft 48 Remove the G needle operation arm upper Spring hanger plate lower Direction change lever Removing the G carriage feeding lever 49 Pull out the G carriage feeding lever 50 Presser plate for spring hanger 51 Spring hanger plate upper 52 Spring hanger plate lower 53 Direction change lever spring 54 Direction change lever Change lever for knitting ...

Page 13: ...ts 1 5 Spring for retainer Retainer for reader Washer for link Tapping screw 1 Pitch adjuster lever Link for pitch adjuster 1 Snap ring E Snap ring E Yarn feeder change lever Stitch adjusting plate DCmotor Screw for DC motor 2 pes 57 Remove the snap ring E and the snap ring E 3 for the yarn feeder change lever Remove the yarn feeder change lever 58 The stitch adjusting plate comes off Removing the...

Page 14: ...feeder holder 5 pes Yarn feeder unit G needle swmg arm assembly Pitch adjuster G needle operation arm base Spring for G needle socket Screw for G needle socket Snap nng E 2 Stud Arm for socket 63 Remove the pitch adjuster the G needle swing arm assembly the G needle operation arm base and the socket for G needle Remove the two snap ring E 2 for yam feeder unit and pull out the stud so that the fol...

Page 15: ... for stitch dial Screw A for stitch cam guide plate 2 pes Screw B for stitch cam guide plate 2 pes Needle guide plate Screw for needle guide plate 2 pes Stitch cam guide plate Connecting plate Direction change plateR Direction change plate L Spring for connecting plate G carriage foot Latch stopper brush Screw for latch stopper brush 2 pes Arm for needle operation Stitch dial lever RoUer and sprin...

Page 16: ...ames of Parts Latch stopper brush Screw for latch stopper brush 2 pes 2 Arm for socket Snap ring E 2 Stud J Spring for G needle socket 1 Stitch dialle Cr 4 2Stitch dial 3RoUer spring and cover G carriage foot Arm for needle operation 4 2 Set the stitch dial to the stitch dial lever 4 3 Put the roller and spring into the groove of the stitch dial lever and set the cover Mounting the G carriage foot...

Page 17: ...te R Direction change plate L Spring for connecting plate 9 Stitch cam gu1de plate 4 Screw A for stitch cam guide plate 2 pes 9 5 Screw B for stitch cam guide plate 2 pes 9 Stitch dial washer Stitch dial screw 9 Guide plate Screw for stitch cam guide plate 2 pes 9 3 Widen the space between the direction change plate R and L a little in both lateral directions and fit to the stitch cam guide plate ...

Page 18: ...ting the G needle swing arm the G needle operation base and the pitch adjuster 13 Put the pin A of the G needle swing arm into the open part 16 A of lhe socket for G needle and put the pin B of the arm for socket into the cam hole B of the G needle swing arm at the same time 14 Put the boss C of the G needle swing arm into the hole C of the G needle operation arm base and fit them to the carriage ...

Page 19: ...he hook of the yarn feeder up down change cam to the Names of Parts Lltch pres er plate assembly Yarn feeder holder assembly Yarn feeder holder Yarn feeder holder bracket R Yarn feeder holder bracket L 3 Yarn feeder up down change cam 4 Latch presser change cam W asher for yarn feeder change cam 5 Stud 2 pes Snap ring E 2 2 pes cut position of the yarn feeder assembly upper part 4 Fit the hook of ...

Page 20: ...screws 21 Fix the G needle operation arm base with two screw Mounting the stitch adjuster plate assembly Names of Parts Yarn feeder unit assembly Screw for yarn feeder holder bracket 5 pes Screw for G needle operation arm base Stitch adjuster plate Yarn feeder change lever Snap ring E 4 Snap ring E 3 22 Put the pin of the stttch adjuster plate assembly into the pin of the G carnage plate while put...

Page 21: ... adjuster lever into the pin of lhe G carriage plate while putting it into the hole ofthe link for pitch adjuster Mounting the retainer for reader 26 Attach the retainer for reader with the spring hooked to the G carriage plate mount so that the one arm may be located between the stitch adjuster plates Mounting the direction change lever 27 Put the boss longer part of the direction change lever in...

Page 22: ...needle operation shaft Snap ring E 2 5 G needle swmg cam spnng D l Reader for needle selection rubber washer 20 35 Locate the pitch adjuster in the rear Keep the carriage feeding lever straight 1 3 4 Change lever for knming needle 36 G carriage feeding cam 36 Keep the lower part of the periphery of the carriage feeding cam in the rear and put it toward the reader for needle selec tion Then fit to ...

Page 23: ... the washer and screw Assemble so that the pin of the knitting needle operation lever may locate in the outside groove of the carriage feeding cam Mounting the operation lever for G needle 38 Attach the shaft of the operation lever for G needle into the hole of the G carriage plate and the link to the G needle operation arm with the pin of the lever kept upward Assemble so that the square hole of ...

Page 24: ...inside of the outermost periphery of the cam Yarn feeder change plate assembly Names of Parts 42 1 Step Ieeder 2 2 ScrC for tep feeder 2 Jl S 43 G needle opcrauon cam u Yarn feeder change plate assembly 45 Yarn reeder change c Jm Pring Screw for yarn feeder Change cam spnng Mounting the yarn feeder change plate assembly 44 Put the shorter pin of the yam feeder change plate assembly into the groove...

Page 25: ...of the bevel gear while Names ofParts Washer and snap ring E 4 for latch presser lever Latch presser lever assembly Washer for latch presser Snap nng E Bevel gear Row counter connect ing plate Gear mount G needle tilting lever assembly 5tl G needle tilting cam l Change plate R for aut return Change plate L for aut return Spring for change plate 2 pes putting the pin into the feed change bnk R step...

Page 26: ...of Parts Upper plate assembly lSnap nng E 4 4 pes Screw for gear mount 3 pes Direction change lever Bassembly Snap ring E Direction change lever A assembly Snap ring E Q Binder 2 pes Pattern selection knob aut return knob Direction change knob Mounting the connector of the DC motor when the binder is cut 58 When detaching the control board ftx the lead wire to the upper plate assembly with the two...

Page 27: ...e the switch spring and the SWitCh key 25 Mounting the G carriage cover Names of Parts Swttch key Switch spring 2 pc for each Screw 3 pes 2 Row counter window Row counter Screw 3 pes G carriage cover Screw for G carriage foot 2 p 63 Snap ring E 3 64 Connector 62 Let the lead wire of the control board between the carriage cover and the shaft to mount the G carriage cover and put the G carriage cove...

Page 28: ... needle mto the G socket for G needle and attach 26 2 Lower needle guide arm assembly Name of Parts Screw for G carriage 3 pes Needle I Uide arm G needle Rubber wheel Washer for rubber heel Sere for rubber wheel 2 pes rcspccuvcly the lever of the G needle operation arm assembly to the G needle Mounting the rubber wheel 68 Attach the nght and left rubber wheels w1th the screws and washers Keep the ...

Page 29: ...et B 4 Remove the two screws for the DC motor S Replace the DC motor with new one Attach the two screws for the DC motor to the DC motor bracket 27 B Screw for DC motor DC motor braket 6 Lift the G carriage foot and put the DC motor with the DC motor bracket while the gear in the DC motor b1tes the level gear 7 FIX the DC motor bracket with the two screws for the DC motor bracket 8 Connect the con...

Page 30: ... 88 34 1 m m 4 Fix with the stitch dial screw Adjusting the motor control board 28 7 6 5 Rotate the bevel gear clockwise and move the yam feeder holder near the control board 6 Push the yarn feeder holder forward and keep it as it is by releasing hand from it 7 Place the control board near the yarn feeder holder so that the board may not get contact with the holder and fix it with two screws for c...

Page 31: ...emove the speed control knob 10 Assembling the adaptor Names of Parts 1 Screw for adaptor box 3 pc Adaptor bO lower 3 Power supply board adaptor 4 Screw for volume 2 pes Speed control Adaptor box cover upper 5 Put the speed control knob to the speed control board 4 Fix the speed control board onto the upper adaptor cover with the two screws 3 Put tn the adaptor and the power board together and att...

Page 32: ...2 When the two screws for the sensor for yarn breakage are loosened the DC cord and the cover comes off the body Assemble the sensor in the reverse order 30 t ames of Parts I Sensor body 2 Delecung bar 3 Snap nntt for sensor 4 Sensor cover 5 MJcro witch 6 Screw for sensor 2 pes ...

Page 33: ... Detach the DC cord from the board set the tester to the ohm range x 1 and connect the plus side of the 31 tester bar with the while wire of the DC cord and the minus side with the black wire When the tester indicates zero ohm replace the DC cord and the curl cord When the tester indicates ohm replace the power board When not zero ohm Replace the fuse and connect with the AC receptacle with the DC...

Page 34: ...ct the tester bars with the both ends of B The tester normally indicates co When zero ohm replace the switch board which is out of order The tester indicates zero ohm when the start switch is pressed When not indicating zero ohm replace the switch board which is out of order 3 When no abnonnality is found with the adaptor the DC motor assembly and the switch board replace the motor control board 2...

Page 35: ...carriage does not move 1 The G carriage feeding lever shaft is loosely assembled Turn over the G carriage If the shaft shown in the figure moves when the carriage is moved the assembly is found loose In this case replace the G carriage plate assembly 2 The feed plate does not move smoothly and laterally See the page 34 The feed plate is aligned The direction change lever spring becomes weak The sh...

Page 36: ...3 Lateral movement of feed plate 7 1t f I 1 __ _ __ Carriage feeding lever Direction change link R Direction change link L Feed plate Rear rail auxiliary rack 34 ...

Page 37: ... is a difference in level between the upper G carriage covers A and B plane the cover the direction change knob or replace the upper G carriage cover assembly 2 The direction change assembly R and L function heavily The needle guide cam and the direction change plate slide heavily with each other due to the warp of the plate Adjust or replace the stitch guide cam plate and the direc tion change pl...

Page 38: ... be sure that the needle is not bent The latch should operate as smoothly as wLat h oeedle Gate pegs 36 possible and it should be opened 5 5 mm or more by the spnng Adjust or replace the G needle Latch needle which is out of order as shown of the machine in the left figure t II G needle 2 Replace the KH needle if the latch is out of order and the latch needle is bent Check to be sure that the KH n...

Page 39: ...rong needle selection cannot be found with the K carriage If the wrong needle selection is found adjust by referring to the service manuaJ of the machine 1 The stitch knitted by KH needle purl becomes the stitch by G needle Plain 1 When the hole where the reader for needle selection of the feed base assembly is located gets contact with the shaft of the contact assembly make the hole of the feed b...

Page 40: ... section 2 on the page 32 the checking method ofthe stop switch 2 If the G carriage does not stop at 000 set the row counter to 000 set the tester to the ohm range x I and connect the tester bars with the both ends of A If the tester indicates zero ohm the control board is out of order Ifnot indicating zero ohm the switch board is out of order 6 The sensor for yarn breakage does not work If the ya...

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