RUMBLE HOG RH7500, Operation Manual

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Section 4 - lubrication & maintenance
Be sure the vacuum filter is always in good operat -
ing condition with the plug inserted and secured in
the service port so it fully protects the blower from
debris internally. If paint debris ever gets into the
blower impellers, use lacquer thinner or other non-
corrosive cleaner to remove residue build-up inside.
It will be necessary to remove the silencer in order
to clean the blower. Remember that if large debris
gets into the blower, it can cause severe damage
to blower components. Refer to Vacuum Canister
& Filter for instructions on maintaining the vacuum
system and cleaning the filter.
Inspection and Maintenance
Daily:
• Check for obvious loose mounting nuts and
bolts.
• Check the oil level in the gear end of the
blower. It should be within 1/4” of the overflow
plug threads.
• Grease blower drive end bearings with the lu-
bricant recommended by the blower manufac-
turer. Refer to the Service Matrix for lubricant
specifications.
• Clean the vacuum filter before each shift. Drain
the filter canister and check the filter at least
once every 2 hours of operation. Filters may
be cleaned with a pressure washer up to 2000
PSI (138 bars). A mild solvent solution may
be used to clean thermoplastic or tar residue
from the filter surface.
• Inspect the filter for holes or thin areas that
could allow vacuumed water or debris to get
into the vacuum blower or silencer. Clean,
secure filtration is necessary to keep your
vacuum blower in good operating condition.
Replace if necessary.
• Check the vacuum canister door seal. Clean
or replace the seal if necessary.
200 Hour Maintenance
Perform all daily maintenance along with the items
outlined in this section.
• Inspect hydraulic motor coupler, hydraulic
hoses and bolts.
• Inspect and tighten all mounting bolts, hose
clamps and hardware.
• Lubricate drain ball valve. Make sure to open
and close all valves at least once every 200
hours to keep them free and operating prop-
erly.
• Inspect, clean and lubricate the vacuum relief
valve to keep it operating properly.
• Inspect all hoses and fittings for signs of dete -
rioration, chaffing and leaks. Repair or replace
as necessary.
• Tap vacuum hose walls with a dead blow ham-
mer while the system is operating at maximum
vacuum to flex the hose walls and cause built
up debris to break off and be sucked into the
debris tank.
• Inspect and rotate the vacuum hoses 120
0
to
increase the life of the hoses.
500 Hour Maintenance
Perform all daily and 200 hour maintenance along
with the items outlined in this section.
• Change blower gear case lubricating oil after
the first 100 hours and every 500 hours there -
after. Service the blower as recommended in
the blower operating manual.
Important:
Make sure to install the safety plug in crank -
case drain valve when draining is complete.
The safety plug prevents crankcase oil from
draining if the valve is accidentally opened.