KitchenAid Professional 5 Service Manual

							
KITCHENAID
Stand Mixer Service Manual LIT4177310-C                          2005 KitchenAid
I.  Start a new pinion gear and shaft from the bottom
of the bracket. Before the shaft emerges from the 
lower bearing, place a washer on the bearing and 
start the shaft into the washer.
Place a new worm gear next and push the shaft 
up into it. Place the second washer on top of the 
worm gear and push the pinion shaft up into the upper 
bearing.
Line up the drive pin holes in the shaft and worm 
gear and drive in the groove pin.
J.  Place the worm gear assembly and bearing
bracket on the bottom cover so that the two dowels 
will fit into the base of the bearing bracket (Fig. 58).  
Fig. 58  The two dowels must fit into the base of the worm gear bracket.
Place the three lock washer screw assemblies in 
the holes and screw them into the bottom cover 
(Fig. 59). Be sure screws are tight.  (18 -23 in/lbs.)
Fig. 59 Secure the three lock washer screw assemblies into the bottom cover.
K.Check the latch, link and lever assembly. 
There should be no wear or trouble with this 
assembly (Fig. 58).
L.  Use 6 oz. of Benalene 930-2 lubricant and 
lubricate around the gears when filling the gear
case. 
This product is available through your nearest 
authorized distributor.
Try to keep the bearing in the top of the gear 
case open. It will help when assembling the bottom 
cover and gearcasemotor housing together.
M.  Clean the gasket surface of the gear case. 
Place a new gasket on the gearcase, over the 
dowel pin, and press it down so it will stay in 
position. 
N.  Check the cord and plug.
If it is drying and cracking -Replace it.
O.Lock the latch lever and hold the bottom cover 
in position over the gearcase-motor housing and 
start joining them together (Fig. 60).
Fig. 60  Initial mating of bottom cover to gearcase-motor housing.
Start the shaft into the upper bearing and slowly 
push the parts together. Insert a punch into the 
center shaft, turning back and forth, while pressing 
down on the bottom cover, to align the gears. 
CAUTION: Under no circumstances should you 
force the gearcaseand bottom cover together.
If the gears are properly aligned, these two parts 
will assemble with little or no force required.
Page 18
Lock washer screw 
assembly
Dowel pin
Latch   Link   Lever 
						

							
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. 61 Internal gear can be pried from the bottom cover and replaced if necessary.
When installing new gear, start with beveled side 
down; align notches with holes in gear case and tap 
evenly into place using a non-metallic mallet.
Insert and tighten the five special screws evenly 
(Fig. 62) to 18 -20 in. lbs. torque.
Fig. 62  Tighten the five special screws evenly to 18-20 in. lbs..  torque using the sequence shown.
Insert the four #10-24x1”fillister head screws into 
the bottom cover making sure they are tight (Fig. 63)
(18 -20in/lbs.).
Q.  Place a small amount of Benalene 930-2 
lubricant on the teeth of the internal gear.
R.  Check the condition of the planetary. If there is 
any play in the agitator shaft and the bearing (not 
shown), replace the planetary and the shaft.
Fig. 63 Secure the four fillister head screws.
The bearing is an integral part of the planetary. 
Hold the agitator shaft firmly and remove the 
pinion retaining clip (Fig. 64).
Fig. 64  Hold the agitator shaft and remove the retaining clip.
Lift off the pinion. Take out the pin and remove 
the washer (Fig. 65). Pull the agitator shaft out.
Fig. 65  Lift the pinion off and take out the pin and remove the washer; then pull out the shaft.
Page 19
1
2
3
4
5 
						

							
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. Install the retaining clip in the 
groove on the shaft (Fig. 64).
Fig. 66  The planetary components are shown disassembled.
T.Place the washer(s) on the vertical shaft. 
Be sure the planetary pinion and the internal gear 
have a light coat of grease (Benalene 930-2) on them. 
Place the planetary on the shaft and push it down. 
Line up the holes in the planetary and shaft. It may 
be necessary to use an awl or pointed punch to align 
the holes (Fig. 67). 
Fig. 67  A pointed punch  can be used to align the holes of the 
shaft with the planetary.
U.  Drive the groove pin into the shaft (Fig. 68).
There should be a very small amount of end play. 
Fig. 68  Carefully drive the groove pin into the shaft of the planetary.
V.  Place the drip cup on the bottom cover. Tap it 
down into place using a non-metallic hammer.
W. Check the beater height adjusting screw
(Fig. 69).
This screw is slotted and has a nylon insert.
As it is screwed in, threads are cut in the nylon 
and hold the screw tight.
Replace this adjusting screw if it is loose in the 
threads.
Fig. 69  The adjusting screw has a nylon insert and 
should not be loose in the threads.
Page 20 
						

							
KITCHENAID
Stand Mixer Service Manual LIT4177310-C                          2005 KitchenAid
.  SECTION 5
REPAIRS TO TILT HEAD PEDESTALS
A.If pedestal is removed, check the hinge pin. If it is 
galled from failure to loosen the set screw, replace 
it (Fig. 70). 
Fig. 70  The set screw in the bottom of the pedestal should clear the hinge pin.
Loosen the set screw so that it will clear the hinge 
pin. Place the new hinge pin in the pedestal, but do 
not drive it in.
B.Check the rubber feet. If they are worn or softened 
from grease, replace them.
Twist the old feet out (Fig. 71). Clean the holes 
with solvent and dry them with a clean cloth.
Fig. 71  The pedestal feet should be replaced on older mixers.
Moisten the part of the foot that will go into the hole 
and twist the new foot in or tap with a mallet.
Be sure all feet are penetrating the pedestal an equal 
distance to maintain a level foundation.
C.  If the bowl screw cap has worn out, be sure to 
replace it.
To remove the old cap, take out the three #10-
24x1/2”flat head screws and lift out the old cap. 
Put the new cap in place and screw it down tight 
with the three  screws (Fig. 72)(24-32 in/lbs.).
Fig. 72  The new cap is secured to the pedestal with three 
screws.
D.While in the cradle, place the pedestal on the 
bottom cover.
Line up the holes for the hinge pin and tap it in so 
that an equal amount of the pin extends on each 
side of the pedestal (Fig. 73).
Fig. 73  Use a rubber or rawhide mallet to tap the hinge pin into the pedestal.
E.Using a flat blade screwdriver, tighten the hinge 
pin set screw up inside of the pedestal (Fig. 70).
Page 21
Hinge pin 
set screw 
						

							
KITCHENAID
Stand Mixer Service Manual LIT4177310-C                          2005 KitchenAid
F.  On international export models shown (Fig. 74), 
a plastic head lock foot has been riveted to the 
pedestal to permit the locking of the motor housing in 
the “inclined”position.
The lock lever on these models is spring loaded and 
the locking action is obtained by removing tension 
from the lever after the motor housing has been put in 
the “inclined”position (Fig. 74).
Fig. 74  A plastic headlock has been riveted to the pedestal 
of international export models. An international model is 
shown locked in the “inclined”position. This is obtained by 
the action of the spring loaded lock lever used on these
models.
The small circuit board shown (Fig. 75) is an RF 
filter used on international models that is held to the 
bottom cover with a single round head screw. 
Fig. 75 International model bottom cover with R F filter and 
spring loaded lock lever.
SECTION 6
ADJUSTING THE CONTROL UNIT
NOTE:When replacing a control plate, a cloth, 
(Fig. 76), hooked over the control plate spring, 
will keep the spring accessible, not allowing it to 
“snap”between the upper and lower gear case and 
become “lost.”
Fig. 76  Hold the control plate spring with a cloth to retain access for reassembly.
A.  After installing new parts in the control unit, 
the control plate must be adjusted so that all speeds 
will be the same as they were when the mixer was 
new.
B.  Make sure that all of the wire leads are properly 
connected and that they are locked in position 
properly.
Plug the cord into a receptacle having the proper 
voltage.
C.  To adjust the speeds, move the switch lever to 
stir.
This may or may not start the motor.
If motor did not start, turn out the two adjusting 
screws evenly and stop when planetary turns about 
60 revolutions per minute.
To test the speed, hold a finger of the right hand at 
the planetary.
Let the beater shaft hit the finger (Fig. 77).
Count the number of times the finger is touched in 
15 seconds.
Adjust the two screws until the shaft touches the 
finger about 15 times in 15 seconds.
D.  When proper speed has been set, lock the two 
lock nuts using a 11/32”wrench (Fig. 78) and 
check the speed again.
Page 22
Control plate springPlastic headlock 
						

							
KITCHENAID
Stand Mixer Service Manual LIT4177310-C                          2005 KitchenAid
Fig. 77 Carefully let the planetary touch your finger to test 
speeds.
Fig. 78  Once proper speed setting has been obtained, lock 
the two 11/32”lock nuts.
If a small correction must be made, make it without 
loosening the lock nuts.
Test speeds as before, and, when correct, it will not 
be necessary to disturb the lock nuts.
E.  Move the switch lever to speed #6. At this setting, 
the planetary must turn at 180 revolutions per minute.
Check the speed as was done for stir speed.
The planetary should touch your finger 45 times in 
15 seconds.
If the planetary touches the finger less than that, turn 
the adjusting screw at the bottom of the control plate 
(Fig.79). 
Check the revolutions again and keep adjusting the 
screw at the bottom until the right speed is reached.
There is no locking of this screw.
Fig. 79  Adjusting screw at the bottom of the  control plate 
for speed # 6. 
F.  Try all mixer speeds from stir to #10.
If stir and #6 are properly adjusted, the other 
speeds should automatically be correct.
If there is a definite change in speed between #8 
and #10, the control unit is correctly adjusted.
G.A digital speed device (Fig. 80) is available to 
adjust the planetary speed settings on all 
KitchenAid mixers.
Fig. 80  Electronic speed measuring device, with numerical display for setting speeds on KitchenAid mixers .
To use this device, the main control box needs to 
be plugged into a 120 volt power source. 
Insert the tapered metal end of the speed sensing 
unit into the attachment hub of the mixer. The 
tapered hub is machined the same as all mixer
attachments.  Secure it in place by tightening the 
thumb screw.
Page 23
Insert this end into the attachment hub  
						

							
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. If not, turn the two mounting screws 
out evenly until mixer starts. Adjust both screws 
evenly until a speed setting of 40(40 -64) is 
attained.   
Turn mixer to speed #6. The single screw at the 
bottom of the control plate is used to control this 
speed; adjust to attain a speed of 150(141 -170 ).
Turn speed control to speed #8, pause, then turn 
to speed #10. There should be a noticed speed 
increase between #8 and #10 speeds. If not, back 
speed #6 down slightly until there is at least a 
minor speed change between #8 and #10.
The #10 speed should be at least 185(185 -250).
When proper speeds have been set, lock the two 
lock nuts on the upper mounting screws using an 
11/32”wrench.
Be careful not to move the mounting screws in or 
out during the locking process.
Recheck speeds after locking the nuts, and if a 
fine adjustment is needed, it can be done without 
loosening the locking nuts.
G.Place the trimband (Fig. 81) on the gearcase -
motor housing, and with the two # 6-32 x 3/16”
screws, fasten it to the housing.
Tuck in all the wire leads-insure no wires are 
pinched -and place the end cover 
on the end of the motor housing and secure it with 
the # 6-32 x 3/8”oval head screw (Fig. 82).
H.With the end cover on the machine, test the 
speeds again to make sure no change took place in 
the control plate.
With mixer working correctly, place the bowl on 
the bowl screw cap.
Place the flat beater on the agitator shaft.
There should be approximately 1/16”clearance 
between the bowl and beater.
If the beater is too close to the bowl, turn the 
beater height adjusting screw “out”or “in”if it is 
too far away (Fig. 83).
The mixer is now ready for operation.
Fig. 81.  Replace the trim band on the gearcaseafter speeds have been set.
Fig. 82.  The end cover is secured to the mixer with a tapered head screw.
Fig. 83  The beater height adjustment screw used to set the 1/16”clearance between the bowl and beater.
Page 24 
						

							
KITCHENAID
Stand Mixer Service Manual LIT4177310-C                          2005 KitchenAid
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; whereas, on bowl lift models, the bowl 
support slides up and down gibs on the column.
B.Should the mixer be tipped over or knocked off 
the table or counter, the unit’s bowl support 
assembly may be broken. To repair it, it will be 
necessary to replace the bowl support.
C.To replace the bowl support, remove the four 
5/16”-18 x 3/4”round Phillips head screws (Fig. 84) 
and lift the column and base assembly off the bottom 
cover (Fig. 85). KSMC50 models use 5/16”-18 x3/4”
hex head screws.
Fig. 84  Four round Phillips head screws must be removed to replace the bowl support assembly.
D.With the bowl lift assembly on the bench, lay it 
on its back and then remove the four 5/16”-18 x 3/4”
round head screws (Fig.# 86) from the base and set 
the base aside.
E.Remove the two #10-24x1/2”flat head screws 
from the bowl support (Fig. 87) and slide the bowl 
support down and off the column (Fig. 88).
F.Examine the bowl lift arm. This part is held on the 
bowl lift handle with a tapered pin. 
If the arm is cracked at the pin hole, replace it.
If there is any fault with the column, replace it at 
this time.
Fig. 85  Lift the column  and bowl support assembly off of the bottom cover.
Fig. 86  Remove the four round head screws from the base to remove the bowl lift assembly.
Fig. 87  Two flat head screws hold the bowl support to the bowl lift assembly. 
Page 25
BEATER HEIGHT
ADJUSTING SCREW 
						

							
KITCHENAID
Stand Mixer Service Manual LIT4177310-C                          2005 KitchenAid
Fig. 88  Slide the bowl support down and off the column to replace the bowl lift assembly.
G.  To install the new bowl lift arm, drive out the 
roll pin (Fig. 89).
With the roll pin out, remove the bowl lift handle 
(Fig. 90).
The bowl lift arm can now be removed along with 
the bowl lift mechanism.
Fig. 89  Drive out the roll pin to remove the bowl lift arm.
Fig.90  With the roll pin removed, pull out the handle.
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. 91). Be sure the pin is tight.
Check the beater height adjusting screw; replace 
if missing (Fig. 91).
Fig. 91  The roll pin is driven in until it is almost flush 
with the arm. While the adjusting screw is replaced from 
this side, it is adjusted from the other.
I.Slide the new bowl support assembly on the 
column (Fig.88).
Place the bowl lift bracket in place and screw in 
the two #10-24x1/2”flat head screws (Fig. 87).
These screws must be very tight.
Check the castle nut so that the tension will be 
great enough to snap the rod into the arm and hold 
it there (Fig. 92). 
Fig. 92  Check the castle nut for proper tension on the bowl lift bracket.
J. Place the base on the bottom of the column and 
screw in the four 5/16”-18x3/4”round head screws 
(Fig. 86).Tighten these screws to 70 -90 in. lbs.
of torque.
Page 26
ROLL PIN
BEATER HEIGHT
ADJUSTING SCREW
HANDLE DOWN
HANDLE UP
BOWL LIFT ARM 
						

							
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. 93).
Fig. 93  Remove the four round head screws to remove the  feet from older models.
Install new feet by pushing the tapered end into the 
foot supports with a twisting motion (Fig. 94).
Older models place the screws in the new feet and 
screw the feet to the base. Do not tighten so much 
as to push the screw through the rubber (Fig. 93).
Fig.  94 Push tapered end of foot into foot support with twisting motion until seated.
L.  The bowl spring latch must be removed from 
the old bowl support and placed on the new bowl 
support to complete the bowl support repair.
To remove the bowl spring latch, unscrew the two 
#10-24 x 1/4”screws. 
Replace with new if rusted or broken.
The function of the bowl spring latch is to hold 
down the rear of the bowl.
Hold the bowl spring latch on the bowl support 
and insert the two #10-24 x 1/4”round head screws 
into the bowl support and tighten (Fig. 87).
Fig. 95 Two #10-24 x 1/4”screws hold the bowl spring latch in place.
M.  Place the column on the bottom cover 
(Fig. 85) and screw in the four 5/16”-18 x 3/4”
round head screws (Fig. 86).
These screws must be tightened to 70 to 90 in. lbs.
of torque. The mixer is now ready for operation.
N.  To attach the bowl to the support, place the 
bowl support tabs on the bowl over the locating 
pins (Fig. 96). Press down on back of bowl, until 
bowl pin on back of bowl snaps into spring latch.
Fig. 96 Method used to attach bowl to bowl support.
O.  To adjust beater to bowl clearance, attach the 
beater to the beater shaft and raise the bowl into the 
mixing position. 
Beater should be with in 1/16”from bottom of 
bowl.
Page 27
Bowl Locating Pin