Remove the RPM sensor. (See RPM SENSOR on Page 70-91-1.)
Loosen the drive belt tensioner bolt (Item 1) [Figure 70-90-5] from the housing and remove the drive belt.
Installation: Tighten the bolt to 25-28 ft.-lbs. (34-38 Nm) torque.
Adjust the drive belt. (See Adjusting on Page 30-50-1.)
Remove the six flywheel mounting bolts (Item 1) [Figure 70-90-6] and remove the engine flywheel.
Installation: Apply engine oil to the threads and seats before tightening. Tighten the mounting bolts to 72-80 ft.-lbs. (98-108 Nm) torque.
Remove the seven smaller mounting bolts (Item 1) [Figure 70-90-7] which fastens the housing on the
engine.
Installation: Tighten the mounting bolts to 35-40 ft.-lbs. (48-54 Nm) torque.
Remove the two larger bolts (Item 2) [Figure 70-90-7] which fastens the housing on the engine.
Installation: Tighten the mounting bolts to 60-65 ft.-lbs. (82-88 Nm) torque.
Remove the starter (Item 3) [Figure 70-90-7] from the drive belt housing. (See Removal And Installation on Page 60-40-1 OR See Removal And Installation on Page 60-41-2)
Remove the hydrostatic pump drive pulley mounting nut (Item 1) [Figure 70-90-8] and washer.
Installation: Tighten the mounting nut to 175-200 ft.-lbs. (237-271 Nm) torque.
Install a puller on the drive pulley and remove the pulley from the hydrostatic pump shaft [Figure 70-90-9].
Installation: Install the pulley key in the shaft before installing the drive pulley.
Remove the two mounting bolts (Item 1) [Figure 70-90-10] from the drive belt housing which mounts the hydrostatic pump to the housing. Support the pump to prevent it from falling when the mounting bolts are removed.
Installation: Tighten the mounting bolts to 65-70 ft.-lbs. (88-95 Nm) torque.
Remove the drive belt tensioner (Item 2) [Figure 70-90-10] from the drive belt housing (See Tensioner Pulley Removal And Installation on Page 30-50-4.)
Remove the mounting bolt (Item 1) [Figure 70-90-11] from engine coolant tubeline mounting bracket which is attached to the belt shield housing.
Installation: Tighten the mounting bolt to 25-28 ft.-lbs. (34-38 Nm) torque.
Remove the blower fan drive belt tensioner assembly (Item 2) [Figure 70-90-11] from the housing. (See Blower Disassembly And Assembly on Page 70-60-4.)
Remove the drive belt housing.
Reverse the removal procedure to install the drive belt housing.
