Section 6 - Service
72 SCHWARZE HYPERVAC HV-18 revised 11/18
6.1 Oil Levels and Lubrication
Auxiliary Engine Oil
Refer to your auxiliary engine Owner’s Manual for
the manufacturer’s suggested oil type and oil change
schedule. To drain the engine oil pan, use the engine oil
drain hose. This hose, which resembles the hydraulic
hoses, runs from the center of the oil pan, out the right
side of the engine skid and is usually looped around to the
front of the engine skid for storage. By unscrewing and
removing the JIC plug in the end of the hose, the oil may
be drained into a container. Be sure to dispose of the used
oil properly, recycling it if possible.
Normal engine oil pressure should be 380 ± 103kPa (3.80
bar ± 1.03 bar; 55 ± 15 psi) at rated full-load speed (1800
- 2500 rpm) with oil at normal operating temperature of
105°C (220°F).
Important: If the gauge needle does not rise above the
minimum oil-pressure specication of 103 kPa (1.03 bar;
15 psi) within 5 seconds, stop the engine and notify your
supervisor. Auxiliary Engine Cooling System
Auxiliary Engine Cooling System
Refer to your auxiliary engine Owner’s Manual for cooling
system care and maintenance. When replacing your
engine’s coolant, be sure to dispose of the old coolant
properly.
Normal engine coolant temperature range is 82° - 94°C
(180°-202°F).
Important: Do not place the engine under full load until it
is properly warmed up.
Hydraulic System
The hydraulic oil level should be maintained such that it is
kept at the full mark as measured with the hopper down,
brooms up and the pickup head in the up position. Check
by using the sight level gauge, which is located on the left
side of the reservoir. Change the hydraulic oil and lter
after the rst 500 hours of operation, then every 2000
hours thereafter.
If the hydraulic uid becomes cloudy, water has
contaminated the system and the hydraulic uid needs
to be changed (after determining the source of the water
contamination and correcting it). If the sweeping unit is
operated in particularly dusty conditions, the hydraulic
lters will need to be changed more often.
Lubrication Schedule
Item Frequency Lubrication
Dump Door
Hinges
Monthly Grease with lithium-
based grease.
Hopper/Frame
Hinge
Monthly Grease with lithium-
based grease.
Fan Seal, Intake
Seal, and Rear
Door Seal
As Required Lubricate with a
rubber protector or
grease to prevent
drying and loss of
resilience.
Leaf Bleader
Door
Monthly Grease with lithium-
based grease.
Fan Shaft Bearing Lubrication
The Hypervac utilizes lubed-for-life bearings and does
not require re-greasing. The adaptor housing is vented to
prevent over pressure.
The fan shaft uses a load adapter and this adapter is
serviced as a complete unit.
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