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Hersteller: Ferris Industries Dateigröße: 1.59 mb Dateiname: Unterrichtssprache:

3. Drive machine on a flat, level surface to test and repeat steps 1 & 2 as necessary. A B Figure 29. Neutral & Tracking Adjustment Points A. Left-Hand Adjustment B. Right-Hand Adjustment If Machine Veers to the RIGHT: 1. Turn the RIGHT adjustment nut 1/8 - 1/4 turn COUNTER-CLOCKWISE. 2. Turn the LEFT adjustment nut 1/8 - 1/4 turn CLOCKWISE. 3. Drive machine on a flat, level surface to test and repeat steps 1 & 2 as necessary. 27 Troubleshooting, Adjustment & Service TRANSMISSION MAINTENANCE AND SERVICE The hydrostatic transmissions are sealed units that require no maintenance other than the following. • Keep the grass screen and transmission cooling fins clear or grass, leaves and debris. • Keep oil level in the reservoirs (A, Figure 30) at the “FULL” line (B, Figure 30). Extra oil in the reservoir will not benefit the machine. • If it is necessary to add oil to the reservoirs, use SAE straight 20 or 30 weight motor oil. DO NOT use a multi-grade oils. Make sure the area around the oil reservoirs is free from dust, dirt and debris before opening the reservoirs. • Make sure the oil reservoirs caps are tight. • Keep water, dirt and debris from entering the oil reservoirs. A small amount of a contaminant could damage the transmissions. Changing Oil & Filters B Figure 30. Oil Reservoirs A. Oil Reservoirs B. “FULL” Line C Make sure transmissions and immediate surrounding areas are free from dirt and debris before changing the oil and filters. Cleanliness while performing this operation is extremely important. 1. Park the machine on a smooth, level surface such as a concrete floor. Disengage the PTO, engage the parking brake, turn off the engine, and remove the ignition key. 2. Place a drain pan under each transmission and remove the filters to drain the oil. See Figure 31. 3. Once oil has drained from transmissions, replace with new filters (P/N 21068-1), placing a light film on the seal of the filter before installing. Hand-tighten filter only. 4. Fill oil reservoirs 3/4 full with SAE straight 20 or 30 weight motor oil. To Bleed Air From Transmissions 1. Locate the machine in a secure area, away from bystanders and preferably facing a wall. Raise the drive tires off the ground and secure with jackstands. 2. Start the engine and adjust throttle control to FULL (highest setting). See the STARTINGTHEENGINE section for proper starting instructions. Figure 31. Transmission Oil Filter Location (left-hand side shown) 3. Run engine for 15 minutes. Watch the oil level in the reservoirs. Add oil to the “FULL” line (B, Figure 30) as necessary. 4. Watch oil levels for the next few days and add oil to the reservoirs as necessary. 28 Troubleshooting, Adjustment & Service AB B B Figure 32. PTO Clutch Adjustment A. Adjustment Window (Qty. 3, one shown) B. Adjustment Nut B A C Figure 33. Adjust PTO Clutch A. Window B. Adjustment Nut C. .012”-.018” (0,30-0,45mm) Feeler Gauge PTO CLUTCH ADJUSTMENT Check the PTO clutch adjustment after the initial 50 hour break-in period and then after every 250 hours of operation. Also perform the following procedure if the clutch is slipping or will not engage, or if a new clutch has been installed. 1. Remove key from ignition switch and disconnect spark plug wires to prevent the possibility of accidental starting while the PTO is being adjusted. 2. See Figure 32. Note the position of the 3 adjustment windows (A) in the side of the brake plate and the nylock adjustment nuts (B). 3. Insert a .012”-.018” (0,30-0,45mm) feeler gauge (C) through each window, positioning the gauge between the rotor face and the armature face as shown in Figure 33. 4. Alternately tighten the adjustment nuts (B, Figure 32) until the rotor face and armature face just contacts the gauge. 5. Check the windows for an equal amount of tension when the gauge is inserted and removed, and make any necessary adjustments by tightening or loosening the adjustment nuts. NOTE: The actual air gap between the rotor and armature may vary even after performing the adjustment procedure. This is due to dimensional variations on component parts, and is an acceptable condition. 6. Check the mower blade stopping time. The mower blades and mower drive belt should come to a complete stop within seven seconds after the electric PTO switch is turned off. WARNING To avoid serious injury, perform adjustments only with engine stopped, key removed and machine on level ground. Blade Brake Check Mower blades and mower drive belts should come to a complete stop within seven seconds after electric PTO switch is turned off. 1. Remove deck guard(s) for checking blade brake stop time ONLY. NEVER OPERATE the machine without guard(s) in place. 1. With parking brake engaged and PTO disengage, start the engine engine. 2. Observe the mower drive belt. Engage the PTO and wait several seconds. Disengage the PTO and check the amount of time it takes for the mower drive belt to stop. 3. If the mower drive belt does not stop within seven seconds, perform the PTO Clut...

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