Toro Workman HD Series Service Manual page 305

14.Install the pinion shaft and then the input cover. Se-
cure cover with four (4) flange head screws. Torque
screws from 14 to 17 ft−lbs (19 to 27 N−m).
15.Remove the oil fill plug and fill the unit with 8.45 oz.
(250 ml.) of Mobil 424 hydraulic oil (or equivalent).
16.Adjust differential gear backlash as follows:
A. Locate backlash adjustment set screw inside
round boss on cover plate.
B. Using a 3/32" allen wrench, turn the set screw
clockwise until it is snug (do not over−tighten the set
screw). At this point, you should not be able to turn
the pinion shaft.
C. Slowly turn the set screw counter−clockwise until
the pinion shaft can just be turned.
D. Continue to slowly turn the set screw counter−
clockwise until the pinion shaft can freely rotate six
(6) times (one revolution of the ring gear) without any
tight spots. This proper backlash should be achieved
after the set screw has been turned counter−clock-
wise from 1/4 to 1/2 of a turn.
Workman HDX/HDX−D
1
1. Input cover
1. Cover plate
Page 10 − 23
2
Figure 30
2. Pinion shaft
Figure 31
2. Set screw
Front Wheel Drive (4WD)
2
1