The information in this sectionis written for dealer ser- vice personnel. The repair described here requires special skills and tools. If your shop is not properly equipped or your mechanics are not properly trained in this type of repair, you may be time and money ahead to replace complete assemblies.
Keep hands and body away from pressurized lines. Use paper or cardboard, not hands or other body parts to check for leaks. Wear safety goggles. Hydraulic fluid under pressure can easily penetrate skin and will cause serious injury or death.
Make sure that all operating and service person- nel know that if hydraulic fluid penetrates skin, it must be surgically removed as soon as possible by a doctor familiar with this form of injury or gan- grene, serious injury, or death will result. CON-
TACT A PHYSICIAN IMMEDIATELY IF FLUID ENTERS SKIN OR EYES. DO NOT DELAY.
Never perform service or maintenance with engine running.
Keep all persons away from operator control area while performing adjustments, service, or maintenance.
CAUTION
Check that all hardware is properly installed. Always tighten to torque chart specifications unless instructed otherwise in this manual.
Always wear relatively tight and belted clothing to avoid entanglement in moving parts. Wear sturdy,
GEARBOX MAINTENANCE
NOTE: Read this entire section before starting any repair. Many steps are dependent on each other.
Fill gearbox with 6 pints of SAE 80W or 90W gear lube.
NOTE: Repair to this gearbox is limited to replacing bearings, seals, and gaskets. Replacing gears, shafts, and a housing is not cost effective. Purchasing a com- plete gearbox is more economical.
Inspect gearbox for leakage and bad bearings. Leak- age is a very serious problem and must be corrected immediately.
Bearing failure is indicated by excessive noise and
Remove Hub
1.Position stump grinder on a hard level surface with foot pads and jack stand firmly on the ground.
2.Remove hardware and side shield from the right side of the cutter frame.
3.Remove hardware and cutting wheel from hub.
4.Remove cotter pin (23) and slotted hex nut (14) from end of horizontal gearbox shaft.
5.Remove hub.
NOTE: You will need to use a heavy duty puller to remove tapered hub from gearbox shaft.
| 14 |
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| 23 |
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| 14. | Slotted hex nut M30 x 2 |
DP4 | 23. | Cotter pin B6 x 60 |
Figure 10. Cutting Wheel and Hub Assembly
(Side Shield Removed)
Remove Gearbox from Stump Grinder
1.Disconnect and remove the driveline from the tractor.
2.Remove safety pin and clevis pin from top cylinder mount.
3.Rotate top cylinder out of work area.
4.Disconnect and remove the driveline from the gearbox.
5.Remove vent plug and siphon gear lube from housing through this opening.
6.Remove the four bolts that attach gearbox to stump grinder.
7.Remove gearbox.
16 Dealer Service | MAN0155 (Rev. 2/16/2007) |
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