(42)Transmission, Bevel Gear And Flywheel Clutch Compartments
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Hot oil or components can cause personal injury. Do not allow hot oil or components to contact skin. |
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Park machine on level ground, lower all equipment, engage parking brake and shut off engine.
NOTE: Transmission oil should be warm.
- 1. Remove transmission and bevel gear compartment drain plugs and allow oil to drain.
- 2. Remove drain plugs from flywheel housing. Allow oil to drain.
- 3. Remove cover and screen from housing. Wash screen in clean non-flammable solvent.
- 4. Install screen and cover.
- 5. Clean and install all drain plugs that were removed.
- 6. Remove steering clutch compartment drain plugs. This will drain any seepage from final drive and bevel gear case seals. If excessive oil is found, contact your AVSpare dealer. Clean and install drain plugs.
- 7. Remove fill plug and breather. Install new plastic breather or wash metal breather in clean non-flammable solvent, oil lightly and install. Fill compartment. See REFILL CAPACITIES.
- 8. Measure oil level and add oil if required. Operate tractor a few minutes and measure oil level again.
(43)Cable Control Gear Case
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Hot oil or components can cause personal injury if they contact skin. Use caution when draining oil or changing filters. |
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- 1. Remove fill and drain plugs. Allow oil to drain.
- 2. Clean and install drain plug.
- 3. Fill gear case with oil to level of fill plug opening. Install fill plug. See REFILL CAPACITIES.
(44)Transmission Control Linkage (If Equipped With Fitting)
Tilt seat back. Lubricate 1 fitting.
(45)Brake Control Linkage (If Equipped With Fittings)
Remove floor plate and lubricate 2 fittings.
(46)Steering Clutch Control Linkage (If Equipped With Fitting)
- 1. Remove dash cover and lubricate 2 fittings.
- 2. Open access door under console and lubricate 2 fittings.
- 3. Remove floor plate and lubricate 2 fittings.
Lubricate a total of 6 fittings.
- 4. Install all covers.
(47)Engine Valve Lash
Valve Lash:
Inlet valves - .015 ± .003" (0.38 ± 0.07 mm)
Exhaust valves - .025 ± .003" (0.64 ± 0.07 mm)
NOTE: Measure valve lash with engine stopped and cold.
Do not use starting motor to turn crankshaft.
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Turn crankshaft in direction of normal rotation only. |
- 1. Remove valve cover.
- 2. Remove plug from timing bolt hole in flywheel housing. Turn flywheel slowly until No. 1 inlet and exhaust valves close.
- 3. Install a 3/8 inch NC bolt, 3 inches (76 mm) long, into timing hole in flywheel.
- 4. Measure valve lash for No. 1, No. 3 and No. 5 exhaust valves. Adjust if necessary.
- 5. Measure valve lash for No. 1, No. 2 and No. 4 inlet valves. Adjust if necessary.
- 6. Remove bolt from flywheel housing.
- 7. Rotate flywheel 360° to close No. 6 inlet and exhaust valves.
- 8. Insert timing bolt in flywheel.
- 9. Measure valve lash for No. 2, No. 4 and No. 6 exhaust valves. Adjust if necessary.
- 10. Measure valve lash for No. 3, No. 5 and No. 6 inlet valves. Adjust if necessary.
- 11. Remove bolt from flywheel housing.
- 12. Install plug in flywheel housing.
- 13. Start engine and run at low idle. Observe valve rotators. If valves do not rotate, see your AVSpare dealer.
- 14. Inspect valve cover gasket and replace if damaged.
- 15. Install valve cover.
- 16. Tighteen bolts to 8 ± 2 lb.ft. (11 ± 3 N·m) in sequence shown.
Do not overtighten or distortion and leakage may occur.
To Adjust Valve Lash
- 1. Loosen adjusting screw locknut.
- 2. Turn adjusting screw in to close gap, out to open gap (see preceding page for correct lash).
- 3. Hold adjusting screw and tighten locknut.
- 4. Recheck adjustment.
- 5. Remove timing bolt from flywheel and flywheel housing.
- 6. Install plug in flywheel housing.
- 7. Inspect valve cover and replace if damaged.
- 8. Install valve cover (see above for correct bolt tightening sequence).
(48)Hydraulic System
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Hot oil or components can cause personal injury if the contact skin. Use caution when draining oil or changing filters. |
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- 1. Oil warm, machine level, blade lowered with slight down pressure, engine stopped and brake lock applied. Move controls to help relieve system pressure.
- 2. Stop engine. Remove fill cap and drain plug. Allow oil to drain.
- 3. Clean and install drain plug.
- 4. Install new filter elements
- 5. Remove tank filler screen.
- 6. Wash screen in clean non-flammable solvent and install.
- 7. Add oil to tank until it is visible in sight gauge. See REFILL CAPACITIES.
- 8. Inspect tank filler cap gasket. Use new gasket if necessary. Install tank filler cap.
- 9. Make sure hydraulic controls are in HOLD.
- 10. Start engine and allow oil to circulate.
- 11. Operate tractor a few minutes and observe oil level again. Add oil if necessary.
(49)Cooling System-Changing Antifreeze Solution
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Always inspect cooling system with engine stopped. Remove filler cap slowly to relieve pressure. Steam can cause personal injury. Inhibitor contains alkali, avoid contact with skin and eyes to prevent personal injury. |
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If machine is to be stored in, or shipped to, an area with below freezing temperatures; the cooling system must either be protected to the lowest expected ambient temperature, or drained completely. |
When permanent antifreeze and water solutions are used in the cooling system, the solution should be drained and replaced EVERY 2000 SERVICE HOURS OR 1 YEAR.
However, when additions of inhibitor are made to the cooling system EVERY 500 SERVICE HOURS OR 3 MONTHS, it is not necessary to drain and refill yearly. The antifreeze change period can be extended to 4000 service hours or 2 years.
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Do not use AVSpare Cooling System Inhibitor with Dowtherm 209 coolant. |
NOTE: Add 1 pint (.5 litre) AVSpare Cooling System Inhibitor, or equivalent, per 4 U.S. gallons (15 litres) of coolant to give a 3% concentration of inhibitor to the cooling system.
- 1. Park machine on level ground. Stop engine and allow to cool.
- 2. Loosen filler cap slowly to relieve pressure. Remove filler cap.
- 3. Open radiator drain valve and allow coolant to drain.
- 4. Remove coolant drain plug from engine block. Allow coolant to drain.
- 5. Install all drain plugs and close radiator drain valve.
- 6. Add 2 pints (1 litre) of AVSpare Cooling System Inhibitor or equivalent.
- 7. Add antifreeze solution to provide protection to the lowest expected ambient temperature.
- 8. To help avoid air locks, add coolant slowly at 5 U.S. gallons (19 litres) per minute or less. Fill to within 1/2 inch (1 cm) of bottom of fill pipe.
- 9. Start and run engine with filler cap removed. Allow coolant to warm and level to stabilize. Add coolant if necessary. Stop engine.
- 10. Inspect filler cap gasket. Replace if damaged. Install filler cap.