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Changing the Hydraulic
Fluid
Service Interval: Every 400 hours/Yearly (whichever
comes first)
1.
Park the machine on a level surface, engage the
parking brake, and lower the grinder.
2.
Shut off the engine and remove the key.
3.
Allow the machine to cool completely.
4.
Remove the top cover.
5.
Remove the hydraulic-tank filler cap and filter
(Figure
58).
6.
Place a drain pan capable of holding 38 L (10
US gallons) under the hydraulic tank.
7.
Remove the hydraulic tank drain plug and allow
the fluid to drain into the pan
Figure 59
1. Hydraulic tank drain plug
8.
When finished, install and tighten the drain plug.
Note:
Dispose of the used oil at a certified
recycling center.
9.
Fill the hydraulic tank with hydraulic fluid; refer
to
Hydraulic Fluid Specifications (page
10.
Install the hydraulic filter and filler cap
58) and torque bolt on top to 21 to 25 N∙m (200
to 240 inch-lb).
11.
Start the engine and let it run for a few minutes.
12.
Shut off the engine.
13.
Check the hydraulic fluid level and add any fluid if
necessary; refer to
Level (page
36).
14.
Clean up any spilled fluid.
15.
Install the top cover.
(Figure
59).
35).
(Figure
Checking the Hydraulic-Fluid
Grinder Maintenance
Replacing the Teeth
Service Interval: Before each use or daily—Check
Due to the high amount of wear placed on the teeth,
you need to rotate and replace them periodically
(Figure
60).
1. Sharp tooth
Each tooth is indexed with 3 positions so you can
rotate it twice, exposing a new sharp edge before
replacing the tooth. To rotate a tooth, loosen the nut
securing the tooth
g319439
and rotate it one third of a turn, bringing an unused
edge to the outside. Torque the nut securing the tooth
to 68 N∙m (50 ft-lb).
To replace a tooth, remove the nut securing the tooth
to remove it, then install a new tooth, spacer, and
nut in the same position
securing the tooth to 68 N∙m (50 ft-lb).
37
the condition of the teeth; rotate
or replace any that are worn or
damaged and torque the nuts for all
teeth.
Figure 60
2. Worn tooth
(Figure
61). Push the tooth forward
(Figure
61). Torque the nut
g034325
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