Walker MT owner manual Maintenance Instructions, Replacing/Repairing, Mower Deck Gearboxes

Maintenance Instructions REPLACING/REPAIRING

NOTE: With oil flow throughout the unitized gear drive assembly; if one gearbox has internal damage or excessive wear, the remaining gear- boxes and connector tubes should be complete- ly disassembled and thoroughly flushed out with solvent before reassembly.

5.Drain and properly dispose of oil.

6.Remove the four (4) bolts mounting the gearbox to the connector tube and slide the gearbox off the splined drive shaft coupling.

7.Install the new gearbox on the spline coupling of the drive shaft. Establish correct timing of the blade drive gearboxes by setting flats on the output shaft at 90 degrees when connecting the gearbox(es) to the spline coupling. Make sure the timing is correct before proceeding with assembly.

8.Reinstall the four (4) bolts mounting the gearbox to the connector tube but do not tighten them at this time; leave connector tube bolts finger- tight.

9.Position the gear drive assembly on the deck and install the 3/8-16 bolts mounting the entire assembly. Leave the mount bolts finger-tight.

10.Torque all the connector tube bolts to 80 in-lb (9 N⋅m); then tighten the deck mount bolts.

NOTE: This fastener tightening sequence aligns the gearbox assembly with the deck housing and eliminates the possibility of mounting the unitized assembly in a bind.

11.Fill gearbox assembly with oil. Refer to Mower Deck Gearbox Lubrication in this section for instructions.

12.Reassemble remaining items onto deck to com- plete installation. After installing blades, check that the blade timing is correct by moving the blades through one (1) complete revolution. Make sure blade tips pass clear of each other.

Mower Deck

Gearboxes

Connector Tubes

Mower Deck Gearboxes

(Shown with Gearbox Cover Removed for Clarity)

GHS Blower Assembly (and/or Blower Wheel)

GHS Blower Assembly Removal

1.Remove the mower deck. Refer to Deck Instal- lation in Assembly Instructions and reverse the procedure to remove the deck.

Skid Bar

Mounting Bolts

Skid Bar

Blower Assembly

Remove Skid Bar for

GHS Blower Removal

2.Remove the blower faceplate by removing six

(6) 1/4-20 nuts.

3.Remove the GHS blower drive belt. Refer to REPLACING/REPAIRING the Drive Belts in this section for instructions.

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