LUBRICATION
Shaft bearings at the gear end of the blower are splash lubricated by one or both gears dipping into an oil reservoir
formed in the gear end plate and cover. Shaft bearings at the drive end of the blower are lubricated by a slinger
assembly dipping into an oil reservoir. Before starting the blower, fill oil sumps as shown below under “Filling
Procedure.” Tuthill approved mineral-based and synthetic lubricants are listed on page 11.
FILLING PROCEDURE
1. Remove fill plugs or breathers from both gear end and drive end plates.
2. SLOWLY pour oil through fill until oil appears in the oil sight glass. Bring oil level to center of sight glass. Except for
the Competitor (3003), which requires grease in the drive end (see page 11 for Tuthill recommen
3. Verify oil level is at proper level in BOTH gear end and drive end sight glasses.
4. Replace fill plugs or breathers that were removed in step 1.
CAUTION: Do not start the blower until you are sure oil has been put in the gear housing. Operation of the blower
without proper lubrication will cause the blower to fail and void its warranty.
WARNING: NEVER ATTEMPT TO CHANGE OIL WHILE THE BLOWER IS IN OPERATION. Failure to heed this warning
could result in damage to the equipment and/or serious personal injury. Oil level must be checked while the blower
is not running.
APPROXIMATE OIL CAPACITIES
6
PneuLube™ synthetic oil is the best lubricant for your blower. Contact your local Tuthill Vacuum & Blower Systems
Sales Professional for availability of this superior lubricant.
GEAR END DRIVE END GEAR END DRIVE END
3003 3.4 ounces (100 mL) Requires grease 6.0 ounces (180 mL) Requires grease
4005, 4007 5.8 ounces (170 mL) 4.7 ounces (140 mL) 8.5 ounces (250 mL) 6.4 ounces (190 mL)
MODEL Horizontal Air Flow Vertical Air Flow
A = Breather
B = Oil Level Sight Glass
C = Magnetic Oil Drain Plug
CAUTION!
Most Hydra Master blowers are shipped
from the factory in a left hand drive,
vertical flow configuration.
If drive shaft location is changed, the oil
level plugs, sight glasses and breathers
must be relocated to proper positions,
as shown to the right.
Failure to change plug location will
result in blower failure and void the
product warranty.
GEAR END
DRIVE END
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