AT-18
AUTOMATIC TRANSMISSION
GENERAL DESCRIPTION
C: CAUTION
• Wear working clothing, including a cap, protec-
tive goggles, and protective shoes during opera-
tion.
• Remove contamination including dirt and corro-
sion before removal, installation, and disassembly.
• Keep the disassembled parts in order and pro-
tect them from dust or dirt.
• Until the oil pan is removed, do not place with the
oil pan side facing up to prevent foreign matter from
entering the valve body.
• Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly and replacement.
• When disassembling the case and other light al-
loy parts, use a plastic hammer to force it apart. Do
not pry it apart with a screwdriver or other tool.
• Be careful not to burn your hands, because each
part on the vehicle is hot after running.
• Use Subaru genuine gear oil, grease etc. or the
equivalent. Do not mix gear oil, grease etc. with
that of another grade or from other manufacturers.
• Be sure to tighten fasteners including bolts and
nuts to the specified torque.
• Place shop jacks or safety stands at the specified
points.
• Apply gear oil onto sliding or revolution surfaces
before installation.
• Replace deformed or otherwise damaged snap
rings with new ones.
• Before installing O-rings or oil seals, apply suffi-
cient amount of ATF fluid to avoid damage and de-
formation.
• Be careful not to incorrectly install or fail to install
O-rings, snap rings and other such parts.
• Before securing a part on a vise, place cushion-
ing material such as wood blocks, aluminum plate,
or shop cloth between the part and the vise.
• Avoid damaging the mating surface of the case.
• Before applying sealant, completely remove the
old seal.