McNeilus HD Rear Loader, Operator'S Manual, Page: 101 / 132

© 2008 McNeilus Truck and Manufacturing, Inc.
Rear Loader
87
Preventive Maintenance
The gauge contains a thermometer which indicates the
temperature of the hydraulic oil in the reservoir. The reservoir
could have one of two gauges. The first type ( Figure 43) is
distinguished by the word “LOW” below the sight glass. The
second type (Figure 44) does not have the word “LOW” on the
gauge.
The hydraulic oil must be checked with all the hydraulic
cylinders in the fully RETRACTED position.
On a reservoir with a temperature/level sight gauge option
(Figure 43 ), oil level at 60 - 70°F should be at the black line in
the center of the green zone (Item 1). Oil should not be above
the “Max Fill Hot” line (Figure 43, Item 2) when the system
is at operating temperature. If there is too much oil in the
reservoir (above the “Max Fill Hot” line), there is a possibility
of the oil coming out of the breather at the top of the hydraulic
reservoir. Do not operate the system with oil below the “low”
line (Figure 43, Item 3) or damage to the system may result.
CAUTION
Do not operate the hydraulic system with oil
below the “low” line on the temperature/level
sight gauge.
Damage to the system may result.
°F °C
200
150
100
50
0
20
40
60
80
100
LOW
MAX FILL HOT
1
3
2
Figure 43