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1-4 GENERAL INFORMATION
Before Servicing
Tightening Sequence
Generally, when installing a part with several bolts, nuts,
or screws, start them all in their holes and tighten them to
a snug fit. Then tighten them according to the specified se-
quence to prevent case warpage or deformation which can
lead to malfunction. Conversely when loosening the bolts,
nuts, or screws, first loosen all of them by about a quar-
ter turn and then remove them. If the specified tightening
sequence is not indicated, tighten the fasteners alternating
diagonally.
Tightening Torque
Incorrect torque applied to a bolt, nut, or screw may
lead to serious damage. Tighten fasteners to the specified
torque using a good quality torque wrench.
All of the tightening torque values are for use with dry,
solvent - cleaned threads unless otherwise indicated. If a
fastener which should have dry, clean threads gets contami-
nated with lubricant, etc., applying even the specified torque
could damage it.
Force
Use common sense during disassembly and assembly,
excessive force can cause expensive or hard to repair dam-
age. When necessary, remove screws that have a non
-permanent locking agent applied using an impact driver.
Use a plastic-faced mallet whenever tapping is necessary.
Gasket, O-ring
Hardening, shrinkage, or damage of both gaskets and
O-rings after disassembly can reduce sealing performance.
Remove old gaskets and clean the sealing surfaces thor-
oughly so that no gasket material or other material remains.
Install the new gaskets and replace the used O-rings when
re-assembling.
Liquid Gasket, Non-permanent Locking Agent
For applications that require Liquid Gasket or a
Non-permanent Locking Agent, clean the surfaces so
that no oil residue remains before applying liquid gasket or
non-permanent locking agent. Do not apply them exces-
sively. Excessive application can clog oil passages and
cause serious damage.
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