Diamond Products CC7074 - Manual (Page 31)

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Lower Gearbox
Clean the lower gearbox breather vent (at end of vent
tube) using compressed air to remove oil, dirt, and slurry
every 100 hours.
Figure 32: Lower Gearbox Breather Vent
Changing the Lower Gearbox Fluid
Change the lower gearbox fluid every 100 hours.
1. Place a drain pan under the gearbox drain plug (on
back of gearbox).
2. Remove the gearbox drain plug and drain the fluid
completely. Dispose of the used fluid according to
city, state, and federal regulations.
3. Replace the drain plug and retighten to secure.
4. Lower saw to level frame.
5. Remove the red vinyl plug from the frame base
(below gearbox) to view the fluid level from the sight
glass.
6. Remove the fill cap and add Synthetic ATF fluid to
the lower gearbox to at least half full (view level
through sight glass).
7. Replace the fill cap and retighten to secure.
8. Replace the red vinyl plug in frame base.
Figure 33: In-Line Oil Filter
Cleaning the In-Line Oil Suction Filter
Clean the in-line oil suction filter every 100 hours.
Replace the filter when it cannot be properly cleaned or
is damaged.
1. Lower the saw completely.
2. Place a drain pan underneath the filter.
3. Use a wrench to hold the hex filter cap in position.
Use another wrench on the barrel flats and loosen
the barrel from the cap. A very small amount of oil
may drain. Dispose of the used oil according to city,
state, and federal regulations.
4. Remove the spring and bronze element from the
barrel. Clean the inside of the barrel and the bronze
filter element using an industrial cleaning solvent.
Replace the filter if damaged or not cleanable.
5. Fit the bronze filter inside the spring and place the
assembly back into the filter barrel.
6. Retighten the filter barrel to the hex filter cap to
secure.
Belt Sheaves
The upper and lower belt sheaves may need to be
changed when changing the blade size. Refer to the
CC7074 Parts List for additional information.
Removing the Belt Sheaves
1. Loosen the two engine cradle screws.
2. Loosen the nut away from the engine foot on both
blade drive belt tension bolts.
3. Turn both blade drive belt tension bolts (large
threaded bolt on engine foot) counterclockwise to
loosen the belts.
4. Remove both sets of belts from the four sheaves.
5. Remove both setscrews from one of the sheaves.