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KitchenAid KSM75 Service Manual

KitchenAid KSM75 Service Manual

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SERVICE MANUAL for
KITCHENAID

STAND MIXER

Printed in U.S.A.
Models K45SS
September, 2005
KSM75
KSM90
KSM103
KSM110
KSM150
KSM151
K5SS
KSM5
KSM50P
KSMC50
KPM5
KPM50
KP50P
LIT4177310-C

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  Summary of Contents for KitchenAid KSM75

  • Page 1: Stand Mixer

    SERVICE MANUAL for KITCHENAID STAND MIXER Models K45SS KSM75 KSM90 KSM103 KSM110 KSM150 KSM151 K5SS KSM5 KSM50P KSMC50 KPM5 KPM50 KP50P Printed in U.S.A. September, 2005 LIT4177310-C...
  • Page 2: Service Environment

    Safety Guidelines This Service Manual is written for the Professional Service Technician who has familiarity with the KitchenAid Stand Mixer. The following Safety Guidelines should be adhered to when servicing this product. SERVICE ENVIRONMENT •The workplace will be dry and sanitary at all times and all units should be inspected for cleanliness before any work is started.
  • Page 3 Stand Mixer Serial Number Codes Introduction All KitchenAid Stand Mixers are well designed and carefully built. Normally they will give continual use year after year without service attention. Careful records have been maintained over a period of years to determine and correct, through improved design, any troubles that might possibly develop.
  • Page 4: General Information

    Normal Performance any tendency to heat because of the built-in ventilating system in the motor. The KitchenAid Stand Mixer is powered with a Under heavy loads with extended mixing time universal motor which will operate on 50 or 60 hertz, periods, the head may heat up to the point of being alternating current only.
  • Page 5: Gearcase Lubrication

    In this way, the speed is controlled. PLANETARY If the mixer motor begins to run too fast for a A. All solid state KitchenAid mixers have the particular speed setting, one or both contacts same motor and control parts and the gears in the open, which cuts back on the voltage the motor gearcase are alike, with one exception: “K45SS...
  • Page 6 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid C. Note: remove the bowl and any attachments before disassembly of unit. Remove the #6-32x3/8” (tapered head) screw from the end cover (Fig. 1). FIG # 1 Fig. 3 Loosen the hinge pin setscrew to remove the...
  • Page 7 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid F. Remove the power cord from the bottom cover by sliding the molded strain relief out of the slot in the bottom cover (Fig. 8). Fig. 5 The Drip Cup fits tightly and must be started off by tapping it.
  • Page 8 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid Fig. 12 While lifting up on the center shaft, use a screw Fig. 10 Removal of the 5 special screws holding the driver to gently pry the bottom cover from the internal gear in the bottom cover.
  • Page 9 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid Remove the end seal and disconnect the phase SECTION 2 control flag terminals from the control board DISASSEMBLY OF STAND MIXER MOTOR (Fig. 16). AND CONTROL UNIT Note: All service operations discussed here should be performed with the mixer disconnected from the A.
  • Page 10 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid Fig. 20 Phase control or (triac) shown Fig. 18 Mixer housing with end seal and removed in lower center. control board removed. B. The phase control can now be disassembled from the bearing bracket, if necessary, by unscrewing the #4-40 x 1/4”...
  • Page 11 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid D. To remove the speed control link and cam assembly, take out the pivot screw and tension washer (Fig. 24). Flat Spring Fig. 25 Removing the speed control spring, flat spring and the speed control link assembly.
  • Page 12 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid Fig. 27 Bearing bracket being removed after two #10-24 Fig. 29 the brush holder caps are loosened to access nuts have been removed. brushes for removal. Make sure to mark orientation. G. The armature can now be removed.
  • Page 13 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid H. Pull the two wires from the rear of the stator I. To remove the brush holder , it will be through the slot in the gearcase-motor housing so necessary to remove the other stator stud.
  • Page 14 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid C. Test the stator with an ohmmeter (Fig. 35). Set the ohmmeter on the 1X scale and be sure it is SECTION 3 set at zero ohms when shorting the test leads.
  • Page 15 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid The two long leads from the stator must be on the same side as the slot in the motor housing. Insert the stator brush clips between the brush holder housing Bearing Washer and brush insert.
  • Page 16 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid On older models, to replace the bearing, remove the J. The armature should always be checked for end three #4-40x1/2 pan head screws and lift off the play. Armature should turn freely with minimal bearing retainer.
  • Page 17 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid Flat Spring Speed Control Spring Fig. 43 Slide the speed control link over the flat spring and attach the speed control spring to the link. Place the stud on the speed lever through the hole in the speed control link.
  • Page 18 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid N. If the phase control was removed or has been Turn in the screws until 3/8” of the screw replaced, make sure the heat sink on the triac unit remains. has sufficient amount of thermal conductive Have both screws turned in evenly so the opposite compound applied to that surface before assembly.
  • Page 19 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid SECTION 4 REPAIRS TO GEARCASE AND PLANETARY NOTE: Grease is not shown in these pictures. A. Examine the bearings in the attachment hub area and top of the gearcase. These bearings are cast into the gearcase-motor housing.
  • Page 20 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid Push shaft upward and insert the pin (Fig. 53). Center pin in shaft and lower shaft into gear assembly. Turn shaft until pin seats in gears, and gears and shaft turn together. Wipe all excess lubricant from bottom of vertical shaft on “O”...
  • Page 21 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid K. Check the latch, link and lever assembly. I. Start a new pinion gear and shaft from the bottom There should be no wear or trouble with this of the bracket. Before the shaft emerges from the assembly (Fig.
  • Page 22 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid P. If necessary to replace the internal gear, pry it from the bottom cover (Fig. 61). Fig. 63 Secure the four fillister head screws. The bearing is an integral part of the planetary.
  • Page 23 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid S. The agitator shaft is complete as an assembly. Lubricate the shaft and push it up into the bearing as far as it will go. Place the washer(s) on the shaft. Insert the pin through the shaft. Set the pinion gear on the shaft so that the notches in the pinion align with the pin in the shaft.
  • Page 24 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid . SECTION 5 C. If the bowl screw cap has worn out, be sure to replace it. REPAIRS TO TILT HEAD PEDESTALS To remove the old cap, take out the three #10- 24x1/2”...
  • Page 25 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid F. On international export models shown (Fig. 74), SECTION 6 a plastic head lock foot has been riveted to the ADJUSTING THE CONTROL UNIT pedestal to permit the locking of the motor housing in NOTE: When replacing a control plate, a cloth, the “inclined”...
  • Page 26 180 revolutions per minute. Fig. 80 Electronic speed measuring device, with Check the speed as was done for stir speed. numerical display for setting speeds on KitchenAid The planetary should touch your finger 45 times in mixers .
  • Page 27 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid The control plate is spaced 3/8” from the mounting bracket for the proper speed setting “Starting Point.” Plug the mixer into a watt meter set at the proper voltage. Turn the mixer to “Stir Speed.” The mixer may or may not start.
  • Page 28 SECTION 7 REPAIRS TO BOWL LIFT ASSEMBLIES ON BOWL LIFT MODELS A. The bowl lift models of KitchenAid mixers have a different type of bowl and are different in size. On the tilt head models, the bowl is held stationary by mechanical means at the bottom of the mixer pedestal;...
  • Page 29 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid H. With the bowl lift handle down, push it through the column, through the new arm and into the bearing hole in the column. Place the roll pin in the arm and drive it through the lift handle until it is almost flush with the arm (Fig.
  • Page 30 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid K. If the mixer base feet are worn, replace them. To replace the mixer base feet, pull them out, using pliers and a twisting motion. Older models require the removal of four # 8-32 x 1/2” round head screws to remove the feet (Fig.
  • Page 31 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid If not, adjust the bowl height by turning the beater SECTION 8 height adjusting screw clockwise to decrease the clearance or counter clockwise to increase the bowl to TROUBLESHOOTING THE BOWL LIFT beater clearance (Fig.
  • Page 32 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid APPENDIX...
  • Page 33 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid Tools Required for Stand Mixer Service Mallet Electronic Speed Measuring Device Hammer Needle Nose Pliers Ratchet 11/32” Wrench #3 Phillips Long Flat Screwdriver Short Flat Screwdriver #2 Phillips Screwdriver 3/8” Hollow Shank Nut Driver 5/32”...
  • Page 34 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid PROBLEM SOLVING QUICK REFERENCE GUIDE MIXER PROBLEM MOST LIKELY CAUSE(S) WHAT TO DO / CHECK Switch lever clicks, but mixer will not Open electrical circuit. Faulty plug. run or buzz. Faulty power cord.
  • Page 35 Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid FASTENER REQUIREMENTS A. FASTENER AND TORQUE VALUES LISTED BELOW ARE THE FASTENERS AND TORQUE VALUES USED IN THE ASSEMBLY OF THE KITCHENAID. DESCRIPTION TORQUE IN LBS. BASE & COLUMN MOUNTING SCREWS (4)(K45) 125/150...
  • Page 36 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid PROBLEM SOLVING QUICK REFERENCE GUIDE MIXER PROBLEM MOST LIKELY CAUSE(S) WHAT TO DO / CHECK Mixer runs only on high speed. Control plate spring unhooked. Remove end cover and check control plate spring.
  • Page 37 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid PROBLEM SOLVING QUICK REFERENCE GUIDE MIXER PROBLEM MOST LIKELY CAUSE(S) WHAT TO DO / CHECK Switch lever clicks, but mixer will not Open electrical circuit. Progressively disassemble the speed control run or buzz.
  • Page 38 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid STAND MIXER WIRING DIAGRAM DOMESTIC MODELS Adjust these screws equally to give 60 R P M at the planetary on Stir Speed. If using a digital tachometer at the attachment hub, set the reading to 40 - 64 R P M on Stir Speed.
  • Page 39 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid STAND MIXER WIRING DIAGRAM INTERNATIONAL MODELS - R F FILTER Adjust these screws equally to give 60 R P M at the planetary on Stir Speed If using a digital tachometer at the attachment hub, set the reading to 40 - 64 R P M on Stir Speed.
  • Page 40 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid STAND MIXER WIRING DIAGRAM INTERNATIONAL MODELS - BOWL LIFT and R F FILTER Adjust these screws equally to give 60 R P M at the planetary on Stir Speed. If using a digital tachometer at the attachment hub, set the reading to 40 - 64 R P M on Stir Speed.
  • Page 41 KITCHENAID Stand Mixer Service Manual LIT4177310-C 2005 KitchenAid STAND MIXER SERIAL NUMBERS SERIAL NUMBER 01234 MANUFACTURING DIVISION W = Greenville, OH YEAR CODE ( See Below ) WEEK MANUFACTURED CODE (See Below ) SERIAL NUMBER CODE ( See Below ) YEAR CODE The single position that represents the year of manufacture follows the manufacturing Division.
  • Page 42 Safety Guidelines This Service Manual is written for the Professional Service Technician who has familiarity with the KitchenAid Stand Mixer. The following Safety Guidelines should be adhered to when servicing this product. SERVICE ENVIRONMENT •The workplace will be dry and sanitary at all times and all units should be inspected for cleanliness before any work is started.