Service Manual

MOWER DECKS

7-78 Z580/Z589 DFI Z Master Service Manual

60. Insert the pinion shaft assembly into the gearbox

assembly seating the pinion gear into the cross shaft

gear (Fig. 824).

Fig 824 IMG-8570a

62. Check the pinion shaft end play measurement,

it should be between .004” and .012” (.101 and

.305mm). Adjust the pinion housing shims to adjust

backlash (Fig. 826).

Note: Pinion housing shims and open end cap

shims should not vary more than .005”

(.127mm). If they vary more than that, adjust

the cross shaft shimming until a better

balance is achieved.

61. Install 4 new bolts securing the pinion assembly to

the gearbox housing. Torque the bolts to 280 – 325

in-lbs. (31.6 – 36.7 Nm) (Fig. 825).

Note: The bolts are to be tightened in a crisscross

pattern.

Fig 825 IMG-8580a

Fig 826 IMG-8572a