REPAIR INSTRUCTIONS
TRANSMISSION: (Figure 4)
REMOVAL:
1. Run the mixer and shift to low speed (speed 1) and shut the mixer off.
2. WARING:
DISCONNECT THE ELECTRICAL POWER SUPPLY CORD.
3. Remove the drain plug (Figure 4 [18]) and drain the transmission oil.
4. Remove the mixer top cover (Figure 15 [4]) per section 2, Mechanics Maintenance “REMOVAL
OF TOP COVER” instructions on page 2.6 and remove the rear access panel (Figure 15 [5]).
5. Remove the drive belt per section 2, Mechanics Maintenance “BELT REPLACEMENT”
instructions on page 2.2.
6. Remove the speed control assembly per “SPEED CONTROL ASSEMBLY” Removal and
Disassembly on page 7.1.
7. Loosen the two set screws in the upper vari-speed pulley and remove the pulley.
8. Remove the transmission cover (Figure 4 [4]) and remove the remaining oil from the
transmission housing.
9. CAUTION
: The transmission assembly is very heavy weighing approximately 260 pounds and
must be supported prior to starting step (10). It is recommended that a portable hydraulic lift of
sufficient capacity be used when removing the transmission. A lifting strap or sling of suitable
strength may be used on the PTO shaft (Figure 6 [12]) at mid span to support the transmission
housing.
10. Remove the four 1/2-20 hex head cap screws (Figure 4 [12]) and washers and remove the
transmission assembly from the mixer housing and place it on a work bench.
11. Rotate the gear train by hand and inspect it for worn or chipped gears, bent shafts, worn bearings
and excessive backlash. Backlash, measured at the gear teeth, exceeding .030 inch is considered
excessive. After inspecting the gear train to isolate any problems, proceed to disassembly.
Page 3.1
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