270
MIDSECTION
EXHAUST HOUSING SERVICE
Loosen and remove the upper mount plate screws
and remove the mount plate.
Lubricate the up per mount with soapy water and
pry up to remove it from the adapter housing.
Lift the a dapter/inner exhaust housing o ut of the
exhaust housing.
.
Cleaning and Inspection
Clean all parts with parts cleaning solvent and dry
with comp ressed air . All nut a nd screw threads
coated with thread locking material must be thor-
oughly cle aned b efore assembly . When u sing a
thread locking pro duct, be su re to prime t he
threads with Locquic Primer.
Examine the upper and lower thrust mounts, and
replace if deteriorated or damaged.
Before checking the ex haust housing fo r distor-
tion, thoroughly clean the top and bottom mating
surfaces and remove all sealer and corrosion.
Check the e xhaust hou sing for distortio n. Place
the housing on a surface plate. Using a dial indi-
cator, check flatness by measuring the run-out on
the top edge of housing. The maximum allowable
run-out is 0.009 in. (0.228 mm). If you do not have
access to a dial indicator and surface plate, seek
the services of a machine shop. DO NOT attempt
to straighten a distorted housing. Replace it.
IMPORTANT: A d istorted exhaust ho using will
cause the upper driveshaft splines to wear exces-
sively and will damage the crankshaft splines.
32588
006981
A WARNING
Wear safety glasse s to avoid personal
injury, and set compressed air to less than
25 psi (172 kPa).
DR2223
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