176 S450 Operation & Maintenance Manual
HYDRAULIC / HYDROSTATIC SYSTEM
Checking And Adding Fluid
Check the hydraulic / hydrostatic fluid level every day
before starting the work shift.
Park the loader on a level surface, lower the lift arms, and
put the attachment flat on the ground or tilt the Bob-Tach
fully back if no attachment is installed.
Stop the engine.
Open the rear door and remove the rear grille. (See
REAR GRILLE on Page 150.)
Figure 244
Check the fluid level in the sight gauge (Item 2). Keep the
fluid level within the operating range (Inset) [Figure 244].
Remove the fill cap (Item 1) [Figure 244].
Add fluid as needed to bring the level within the operating
range in the sight gauge.
Install the fill cap, install the rear grille, and close the rear
door.
Hydraulic / Hydrostatic Fluid Chart
Figure 245
Bobcat hydraulic fluids are recommended for use in this
machine. If Bobcat hydraulic fluid is not available, use a
good quality hydraulic fluid meeting the viscosity grade
and viscosity index shown in the chart [Figure 245].
AVOID INJURY OR DEATH
Always clean up spilled fuel or oil. Keep heat, flames,
sparks or lighted tobacco away from fuel and oil.
Failure to use care around combustibles can cause
explosion or fire.
W-2103-0508
HYDRAULIC / HYDROSTATIC FLUID
RECOMMENDED ISO VISCOSITY GRADE (VG) AND
VISCOSITY INDEX (VI)
TEMPERATURE RANGE ANTICIPATED DURING
MACHINE USE
[1] BOBCAT All-Season Fluid
[2] BOBCAT Synthetic Fluid
[3] BOBCAT Biodegradable Hydraulic / Hydrostatic
Fluid (Unlike biodegradable fluids that are vegetable
based, Bobcat biodegradable fluid is formulated to
prevent oxidation and thermal breakdown at
operating temperatures.)
[4] VG 100; Minimum VI 130
[5] VG 46; Minimum VI 150
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