Exmark 850 manual Tracking Adjustment, PTO Drive Pulley Alignment, Pump Drive Pulley Alignment

Page 35

Maintenance

Figure 20

1.To increase steering responsiveness hook pump control sprints directly on anchor bolt.

To decrease steering responsiveness hook pump control springs on anchor tabs as shown.

Tracking Adjustment

See Motion Control Linkage Adjustment section

PTO Drive Pulley Alignment

PTO drive pulley alignment is necessary for any of the following conditions:

The blower has been removed or replaced.

The engine mounting bolts have been loosened or the engine has been moved or replaced.

The jackshaft mounting bolts have been loosened or the jackshaft has been moved or replaced.

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Move the speed control lever to the neutral position.

3.Disengage the PTO lever.

4.Remove fuel tank mounting nuts and swing out fuel tank.

5.Verify that the blower is installed and secured tightly.

6.Loosen the 4 engine mounting bolts.

7.Unhook the pump belt tension spring.

8.Loosen the 4 jackshaft mounting bolts.

9.Measuring from the blower pulley as a baseline, move the engine and jackshaft until the rear surface of all 3 pulleys are aligned within 1/32

inch to 1/16 inch (0.8-1.6 mm). Use a straight edge to align all three surfaces (see Figure 21).

Figure 21

1. Align three pump drive

2. Align three PTO drive

pulley surfaces shown

pulley surfaces shown

with this pattern within

with this pattern within

1/32 inch to 1/16 inch

1/32 inch to 1/16 inch

(0.8-1.6 mm).

(0.8-1.6 mm).

10.Tighten the four engine mounting bolts and four jackshaft mounting bolts. Check alignment after tightening.

11.Re-install pump belt tension spring.

12.Swing fuel tank in and re-install tank mounting nuts.

13.Complete the Pump Drive Pulley Alignment section.

Pump Drive Pulley Alignment

Pump drive pulley alignment is necessary for any of the following conditions:

The engine mounting bolts have been loosened or the engine has been moved or replaced.

The pump pulleys have been loosened, moved, or replaced.

The PTO pulley alignment has been performed (see PTO Drive Pulley Alignment section).

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Loosen set screws on both pump pulleys.

3.Using a straight edge, align each pump pulley with the engine pulley by sliding along the pump shaft (see Figure 21).

4.Re-tighten pulley set screws and recheck alignment.

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Contents Navigator California Introduction Contents Training SafetySafety Alert Symbol Safe Operating PracticesSafety Operation Slope Operation Maintenance and Storage Safety Safety and Instructional Decals 103-9034 103-9724 109-4273 109-4638 109-7318 116-0404 Safety Systems SpecificationsModel Numbers Dimensions Torque Requirements Curb WeightProduct Overview Controls OperationOperating Instructions Pre-StartDriving the Machine Engaging the PTODisengaging the PTO Stopping the EngineTransporting a Unit TransportingEmptying Hopper Clearing Hopper ScreenLoading a Unit Recommended Maintenance Schedules MaintenanceCheck Engine Oil Level Check Battery ChargeRecommended Jump Starting Procedure Do Not jump start a weak battery if these conditions exist Check Safety Interlock SystemChange Engine Oil Service Air CleanerCheck for Loose Hardware Lubricate Grease Fittings Check Hydraulic Oil LevelCheck Tire Pressures Check Condition Of BeltsLubricate Rear Caster Wheel Hubs Service Interval YearlyLubricate Hopper Actuator Lubricate Brake Handle PivotLubricate Brake Rod Bushings Lubricate Steering Linkage Rod EndsCheck Wheel Lug Nuts Fuel Tank Mounting Hardware SpecificationsChange Hydraulic System Filter Check Wheel Hub LocknutsPump Drive Belt Tension PTO Belt ReplacementDielectric Grease PTO Drive Belt TensionBelt Guide Adjustment Pump Drive Belt ReplacementAdjust Speed Control Lever Tension Adjust Safety SwitchBrake Adjustment Speed Control Linkage Adjustment Steering Control Lever Response AdjustmentPump Drive Pulley Alignment Tracking AdjustmentPTO Drive Pulley Alignment PTO Brake Spring Adjustment Rear Caster Pivot Bearings Pre-Load AdjustmentHopper Door Adjustment Waste Disposal Clean Engine and Exhaust System AreaRemove Engine Shrouds and Clean Cooling Fins Clean Debris From MachineProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Electrical Diagram SchematicsStart Electrical Logic SchematicHydraulic Diagram Exmark Commercial Turf Equipment Page Date Description of Work Done Service Done By Service RecordPage This page may be copied for personal use See EXMARK’S Complete Line of Accessories and Options
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0, 850 specifications

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