b.Front
c.Cutting Deck Ball
Use the Following guidelines for maintaining the tires:
a.Balance inflation pressure between the rear tires to help maintain straight travel (see tire side wall for proper inflation pressure).
b.Keep the valve caps tightened to prevent air pres- sure loss.
2.Leaking Tires: When a flat tire occurs, repair or replace immediately. The normal procedure is to remove the wheel and replace it with a spare. Take the leaking tire to a maintenance area and repair. If a tire is getting soft, park the mower on the nearest level, paved area. If the leaking tire is on a traction wheel, put blocks on each side of the opposite trac- tion wheel and jack up the tire that leaks about an inch off the ground. Loosen and remove the lug nuts and remove the wheel. Mount a spare wheel and tire, replace the lug nuts, and using a torque wrench, tighten them to 60 ± 10
If the leaking tire is on a front wheel, set park brake, block both traction wheels and raise the front wheel so that the tire is an inch off the ground. Loosen and remove the locknut from the axle assembly and pull the axle assembly from the yoke. The wheel and two spacer sleeves will drop free. Slip the axle assembly through one side of the yoke, through a spacer sleeve, a spare wheel, the other spacer sleeve and finally through the other side of the yoke. Then tighten the locknut on the end of the axle assembly.
Lower the mower off the jack and continue mowing. The wheel with the leaking tire should be taken to the maintenance area, the tire inflated to 20 psi and the wheel placed in a large bucket of water. Carefully inspect the tire, rim and valve for escaping air bubbles which indicate a leak. Mark each leak with a yellow marking crayon and then deflate the tire to 8 psi and repeat the inspection. If the leaks you find are pin hole size to 1/16" diameter, the tire can be repaired using an aerosol can of tire inflater and latex sealer available from any auto supply store. Follow the directions on the can. If the leaks are larger than 1/16" diameter, the tire can be repaired with rubber plugs also available in a kit from any auto supply store. If the tire bead is damaged, a tube will have to be installed in the tire or the tire will have to be replaced.
3.Creeping: Creeping is the slight forward or back- ward movement of the mower when the throttle is on and the speed control pedal is in the neutral position. If your mower creeps, refer to speed control Adjust- ment Section F4, page 21.
E. Brakes
While the mower is in motion, all braking is performed dynamically through the hydraulic pumps and traction motors, controlled by the speed control pedals. If the brake pedal is pushed, it will return the forward and reverse pedals to neutral and add the drum brake force to the hydrostatic brake. When the mower is stationary with the engine running, the hydraulic system locks the traction wheels. If the engine is shut off, the park brake should be engaged. The park brake is engaged by pushing the pedal down and the latch lever until it latches. To release, push it a second time without pushing the latch lever.
Note: To move the mower forward or in reverse by pushing, you must release the dynamic braking. Locate the valves on the pump. Turn valves
Bypass
Valve
Left Side Pump
When the mower is parked with the engine running and the speed control pedal in the neutral position, the parking brakes should be applied. The parking brakes are
1.Adjustments: The parking brake pedal should engage with moderate force.
Note: To increase parking brake capacity, adjust brake cables at the brake arms equally. Adjust the cable housing nuts one full turn and check parking capacity. Repeat if parking brake does not hold.
2.Repair: The mower is equipped with drum brakes and will not normally require maintenance. If they are not working properly, please contact your service center.
Note: The brake can be applied at anytime to func-
tion as a service or an emergency brake. When it is applied, the forward and reverse pedals will return to their neutral positions.
20
