Assessments - 2, GPA: 4
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2. Place lifting device (scissors jack, hydraulic jack) under center of cutter housing. 3. Remove hex nuts, washers and carriage bolts from bracket at each end of roller. Make certain that roller bracket is free to move once the fasteners are removed. A stuck roller could drop suddenly and cause and injury. 4. Use lifting device to reposition cutter housing to desired cutting height. Align bracket holes with cutterhousing holes, then reinstall fasteners. Refer to cutting height decal on mower or page 4-12. 5. Lower cutter unit to ground; then remove lifting device. MAINTENANCE ©2009 Alamo Group Inc. MAINTENANCE HYDRO 88 & 96 03/09 Maintenance Section 5-6 Roller Bearing Replacement 1. Remove roller and both bearing and bracket assemblies from mower. Lift the mower only high enough to remove the roller assembly. 2. Slide bearing and bracket assemblies off each end of roller. If replacing with new bearing and bracket assemblies, proceed to step 9. 3. Remove roller bearing and housing assembly attaching hardware. Remove assembly from bracket. Inspect seal between assembly and bracket for brittleness, cracks, wear and tear. Replace if necessary. If replacing with new roller bearing and housing assemblies, proceed to step 8. 4. Remove grease fitting from the top of bearing housing. 5. Remove bearing from housing by rotating bearing 90° sideways and line up with notches in bearing housing then pull out. 6. Install new bearing into housing. Bearing must be installed with grease hole in bearing aligned with grease fitting hole in housing. 7. Reinstall grease fitting to housing. Grease fitting must have locking pin installed which inserts into grease hole in bearing when installed. If grease fitting does not have a pin, order a new grease fitting. Grease fitting must be tight and seated in grease hole in bearing to prevent bearing from rotating in housing. 8. Attach roller bearing and housing assembly to bracket with seal between housing and bracket. 9. Slide bearing and bracket assemblies on each end of roller. 10. Check bearing for proper installation in housing by gently rocking bearing and bracket assembly in end of roller. Play should be slight to none at all. 11. Install roller and bearing and bracket assemblies on mower. 12. Lubricate roller bearing until lubricant can be seen coming out between roller and bearing housing. Securely support the mower while removing and installing roller assembly. MAINTENANCE ©2009 Alamo Group Inc. MAINTENANCE HYDRO 88 & 96 03/09 Maintenance Section 5-7 Cuttershaft Bearing Replacement OUTBOARD BEARING - Figure Mnt-FL-0022 1. Lift cutter unit to maximum horizontal height; then, securely support ends of cutterhousing. 2. Remove enough knives to place a floor jack under center of cuttershaft. 3. Securely support cuttershaft. NOTE: The cuttershaft must remain supported while changing bearings. 4. Remove outboard fender. 5. Remove fasteners securing bearing and housing assembly to cutterhousing; then remove bearing and housing assembly. NOTE: There are two tapped holes in the housing which can be used to pull bearing and housing assembly out by using special tool No. 701627. 6. Using a jack to align parts, install bearing and housing assembly to cutter unit and make certain that bearing setscrew is located in keyway on cuttershaft. Grease bearing and install cap over fitting. If only the outboard bearing and housing assembly is to be replaced, proceed as follows: A. Remove jack and check shaft rotation B. Reinstall knives which were removed C. Reinstall outboard fender D. Remove supports E. Lower unit to ground and test unit If the inboard (drive) bearing is to be replaced, proceed to step 7. MAINTENANCE ©2009 Alamo Group Inc. MAINTENANCE HYDRO 88 & 96 03/09 Maintenance Section 5-8 Cuttershaft Bearing Replacement (cont’d) Inboard (Drive) Bearing - Figure Mnt-FL-0023 and Mnt-FL-0020. 7. Remove belt guard. 8. Remove spring from idler arm. 9. Remove extension shaft housing mounting bracket fasteners at the cutterhousing. Pivot mounting bracket assembly and remove drive belt. 10. Remove fasteners that secure pulley to cuttershaft. Remove pulley and key. 11. Remove fasteners securing inboard bearing and housing assembly to cutterhousing; then, remove bearing and housing assembly. NOTE: There are two tapped holes in the housing which can be used to pull bearing and housing assembly out by using special tool No. 701627. 12. Using a jack to align parts, install inboard bearing and housing assembly to cutter unit. Grease bearing and install cap over fitting. 13. Reinstall key and pulley. Secure with cuttershaft fasteners. 14. Remove jack and check shaft rotation. Reinstall knives which were removed. 15. Reinstall drive belts then secure motor mounting bracket to cutterhousing. 16. Reinstall idler arm spring. 17. Reinstall belt guard 18. Remove supports, lower unit to ground and test unit. Reinstall outboard fender, if not already installed. MAINTENANCE ©2009 Alamo Group Inc. MAINTENANCE HYDRO...
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