POWER BRAKE CYLINDER 5-11
R EM O VING OR REPLACING
UNLOADER SPRING
R EM O VING UNLOADER
PISTON
REMO VING UNLOADER PISTONS
USING AIR PRESSURE
F ig . 7 G ~ R e m o v in g U n lo a d e r C o m p o n e n ts
end cover to crankcase, then remove front end cover
and end cover gasket. Remove and discard cover oil
seal.
2. Remove cap screws and lock washers attaching crank
case rear end cover to crankcase. Remove rear end
cover and gasket.
3.
Press crankshaft and front bearing out of crankcase.
NOTE: It may not be necessary to remove crank
shaft bearing if inspection indicates bearing to be in
good condition. Check condition of bearing on
crankshaft as directed later under(Cleaning, Inspec
tion, and Repair.)
4.
If bearing is found defective, press front bearing off
crankshaft using arbor press.
Gear-Driven Type (Fig. 8G)
1.
Remove cotter pin and nut from front end of crankshaft
and pull drive hub off shaft. Remove drive hub key
from keyway in shaft.
2.
Remove cap screws attaching rear end cover to crank
case and remove cover and oil seal. Remove oil seal
from boss on cover.
NOTE: Crankshaft rear bearing w ill come o ff w ith
end cover.
3.
Remove crankshaft through rear end cover opening.
4. Remove crankcase front and rear thrust washers. Do
not remove crankshaft bearings from crankcase and end
cover unless inspection shows necessity for removal.
C ylin d er B lo ck R e m o v al and D is a ss e m b ly
Remove cap screws securing cylinder block to crankcase,
then remove cylinder block and cylinder block gasket. Dis
card gasket.
Fig. 8G ~C rankshaft Bushing Installed (Gear Drive)
1 C y lin d er Block
6
C ran k sh a ft Bushing
2 C onnecting Rod
7 C ran k sh a ft Key
3 In s e rt B earing
8
C ran k sh a ft Nut
4 C onnecting Rod Cap
9 C ran k sh a ft
5
T h r u s t
W a sh er
10 C ra n k c a se
CHEVROLET OVERHAUL M A N U A L SUPPLEMENT
Summary of Contents for 40 60 Series
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