Dixon ZTR 5502 Spezifikationen PDF herunterladen (Seite 19)

Page 16

CARE AND MAINTENANCE - MODEL 502

DRIVE SYSTEM ADJUSTMENTS: Hydrostat Chains - Belts - Cable - Controls

Refer to the diagrams on the following pages for the location of adjustment points.

Step 1. Loosen the front and rear mounting bolts of the hydrostat, turn the rear

adjustment bolt downward, which will tension the final drive chain to the rear

wheel. Chain is correctly tensioned when at a point mid-way between the

sprockets chain free play or movement is approximately l/16th of an inch up and

down. Re-tighten mounting bolts.

Step 2. Loosen the (2) bolts which secure the front chain adjustment, refer to

diagram, turn the front adjustment bolt downward using a 5/16th alien •;

wrench. Correct tension is as in step #1. Re-tighten bolts.

Step 3. Repeat above procedures on opposite hydrostat.

Step 4. Tighten the (2) J-bolts on the T-box mounting plate until each belt has

l/8th to l/4th of an inch free play or movement at a mid-point between the

pulleys on the hydrostats and T-box.

Step 5. Position parking brake lever in the off or disengaged position. This will allow

the belt idler used on the engine to T-box to swing fully and apply tension to

the belt. At this time, check that the cable which pulls the idler to a neutral

position has approximately 1-1/2 to 2 inches of free play. If adjustment is

required, loosen the lock nuts on the cable block and turn cable sleeve in or

out to achieve desired measurement. Re-tighten lock nuts. "NOTE" Cable must have

the above dimension with parking brake released or drive belt may slip, causing

a loss of power.

Step 6. Neutral adjustment must be checked at this time which will require the engine to

be started and the parking brake released. Swing upper control levers outward

and into neutral slots, start engine, use caution when releasing parking brake

as mower may tend to creep or move prior to re-adjustment of neutral settings on

each hydrostat. If adjustment is required, loosen lock nuts at each end of the

control rods and back off the tension bolt on each spring block. Turn control

rod in or out until neutral is obtained on each hydrostat. Re-tighten lock nuts

and tension bolts on spring blocks.

Step 7. Stop engine, move levers to drive position. Lightly push each upper control

lever forward until a resistance is felt on the lever. At this time, check that

the forward lever stops are hitting against stop block. "NOTE: Do not allow

levers to travel to completely forward without hitting stop blocks as damage to

hydrostats could result. If adjustment is required, loosen lock nut on lever

stop and turn bolt in to allow lever to hit the stop before resistance is felt in

the hydrostat.

Step 8. Start engine. Drive mower forward and observe driving condition. If mower tends

to pull to either side, re-adjust lever stop on fast side to slow that hydrostat

down and even out the ground speed. Do not speed up slow side as over stroking

of the hydrostat could result in damage to the unit. If upper control levers are

slightly off-set after this adjustment, they can be realigned by bending them

into alignment.

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