MTD MMZ 2254, MMZ 2554, MMZ 2560 service manual Hydraulic System, Hydraulic Oil Tank and Filter

Models: MMZ 2554 MMZ 2560 MMZ 2254

1 32
Download 32 pages 9.39 Kb
Page 23
Image 23

Note: If you wish to move the mower by

pushing, you must release the dynamic brak- ing. Locate the levers at the rear of the mower. Pull both levers out and lock in position. After pushing the mower to the desired location, return both levers to the operating position (See photo at right).

When the mower is parked with the engine running and the steering levers opened out in the neutral position, the parking brakes should be applied. The parking brakes are drum-type brakes mounted on each traction wheel.They are both engaged by the same operating lever.

Hydro Release Levers

1.Adjustments: The parking brake handle is an overcenter lever that should engage with moderate force.

Note: To increase parking brake capacity tighten the brake rods going back to the brake arms equally. Tighten rods one full turn and check parking capacity. Repeat Step.

To adjust either brake individually, disconnect the brake rod from the brake arm by removing the cotter pin from the clevis pin and pulling the clevis pin from the brake clevis. Loosen the hex nut and turn the brake clevis in a clockwise direction one full turn looking down the brake rod. This will tighten the brake about .040 inch. Tighten the hex nut and reassemble the brake clevis to the brake shaft assembly. Normally, both brakes should be adjusted and equal amount.

2.Repair: The mower is equipped with internal wet drum brakes and will not normally require maintenance. If they are not working prop- erly, please contact your service center.

F.Hydraulic System

1.Hoses: Check the hoses from the hydraulic oil tank to the oil filter to the hydraulic lines daily for leaks or abrasion and replace any damaged hoses. Make certain there are no kinks or twists in any hose.

2.Hydraulic Oil Tank and Filter:

Note: Change the hydraulic oil and the oil filter after the first 50 hours of operation

and every 500 hours thereafter.

To drain the hydraulic oil tank, place a 2 gallon drain pan under the drain plug on the bottom of the hydraulic oil tank. Remove the drain plug, drain the tank, then replace the plug. Place the drain pan under the filter and remove the filter by unscrewing in a counterclockwise direction. The filter will be full of oil, so empty it into the drain pan. You don’t have to drain the

23

Page 23
Image 23
MTD MMZ 2254, MMZ 2554, MMZ 2560 service manual Hydraulic System, Hydraulic Oil Tank and Filter