Toro Workman HDX Auto - Transmission Disassembly

Workman HDX Auto Page 4 - 53 Drive Train
Transmission Disassembly (Fig. 55)
1. Clean exterior of transmission assembly.
2. Use suitable blocks to support the transmission with
the rear gear case side orientated upwards.
3. Remove rot ary switch (Fig. 55 item 56) from trans-
mission:
A. Remove snap ring, thrust washer and spring
washer that secure rotary switch t o shift drum shaft.
B. Slide rotary switch from shift drum shaft. For as-
sembly purposes, note alignment post on switch that
locates in slot of sector gear cover (Fig. 5 6).
4. Remove lock nut that secures shift lever (Fig. 55 item
39) to shift shaft. Slide shift lever from shaft. Note miss-
ing tooth in shift lever for assembly purposes.
5. Remove five (5) flange head screws that secure sec-
tor gear cover (Fig. 55 item 28) to transmission. Careful-
ly separate and remove cover from gear case taking
care to not damage sealing surfaces of cover and gear
case.
6. Note location of shift assembly components for as-
sembly purposes (Fig. 57).
7. Remove shift assembly components from rear gear
case noting the following for assembly purposes:
A. End of compression spring (Fig. 55 item 22) fits
around pin on detent pawl.
B. Detent pawl (Fig. 55 item 33) has a recess on one
face which allows the shift shaft shoulder to be fully
installed into the pawl.
C. Shift shaft (Fig. 55 item 43) splines have a missing
tooth for alignment of both shift lever (removed in
step 4 above) and sector gear (Fig. 55 item 30).
D. Shift drum shaft splines have a missing tooth for
alignment of both detent star and sector gear (Fig. 55
item 31 and 32).
E. To ensure alignment of shift drum and shift shaft,
the shift drum sector gear (Fig. 55 item 32) has an
alignment mark that should be positioned between
the two (2) marks on the shift shaft sector gear (Fig.
55 item 30) (Fig. 58).
1. Rotary switch
2. Drum shaft
3. Switch alignment post
4. Slot in sector gear cover
Figure 56
1
2
3
4
1. Compression spring
2. Detent pawl
3. Detent star
Figure 57
2
1
3
1. Shift drum sector gear
2. Shift shaft sector gear
3. Alignment marks
Figure 58
2
1
3
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