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VA
ELECTROHYDRAULIC UNIT (Continued)
Fig. 133 Install Heat Shield
1 - SCREW
2 - HEAT SHIELD
3 - BOLT
FLUID AND FILTER
DESCRIPTION
The oil level control (Fig. 134) is located on the
electrohydraulic unit and consists of the float (5)
which is integrated into the electrohydraulic unit.
The float is positioned to plug the opening between
the oil gallery and gearset chamber so that the rotat-
ing gearsets do not splash about in oil as the oil level
rises. The oil level control reduces power loss and
prevents oil from being thrown out of the transmis-
sion housing at high oil temperatures.
OPERATION
With low oil levels (Fig. 135), the lubricating oil
which flows constantly out of the gearset, flows back
to oil gallery (2) though the opening (6). If the oil
level rises, the oil presses the float (5) against the
housing opening (6). The float (5) therefore separates
the oil gallery (2) from the gearset chamber (1). The
lubricating oil which continues to flow out of the
gearsets is thrown against the housing wall, incorpo-
rated by the rotating parts and flows back into the
oil gallery (2) through the upper opening (arrow).
AUTOMATIC TRANSMISSION - NAG1 21 - 101
Fig. 134 Fluid Level Control
1 - GEARSET CHAMBER
2 - OIL GALLERY
3 - SHELL OF ELECTROHYDRAULIC UNIT
4 - ELECTROHYDRAULIC UNIT
5 - FLOAT
6 - OPENING
Fig. 135 Fluid Level Control
1 - GEARSET CHAMBER
2 - OIL GALLERY
3 - SHELL OF ELECTROHYDRAULIC UNIT
4 - ELECTROHYDRAULIC UNIT
5 - FLOAT
6 - OPENING
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