Chevrolet DB90 Series, Руководство по обслуживанию

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S ec. 6A-57
GASOLINE ENGINES
1 Side Seal
2 Crankshaft Oil
Seal
3 Rear Bearing
Cap
4 Bearing Cap
Rear Bolts
5 Bolt Hole Plugs
6 Cylinder Block
DIP SIDE SEALS (1) IN DIESEL
OIL AND INSERT INTO GROOVE
IN CAP (3) AFTER CAP IS
INSTALLED. CHAMFER ON END
OF SEALS MUST BE LOCATED
AT POINTS "A"
INSERT PLUGS (5) WITH
CAVITY TOWARD BOLTS
Figure
7—Cross
Section o f Rear B earing Cap and Seals
2. Rem ove o il lin e s (10) u sed between spinner
valve (13) and fitting in cylinder block.
3. Rem ove b olts (19) holding oil pump a s s e m ­
bly to cylinder block, then rem ove pump a ssem b ly .
O il pump drive shaft w ill usually disengage from
sock et in distributor and w ill rem ain with oil
pump a s it is rem oved.
4. Rem ove gask et and clean gasket contact
a re a s on pump mounting flange and on cylinder
block.
INSPECTION OF SUCTION
TUBE AND SCREEN
Inspect sc r e e n (9) and bracket (8) for damage.
If the sc r e e n is dam aged or clogged, the assem b ly
should be replaced with new part when assem b lin g
pump on engine. Solvent may be used to clean the
sc r e e n in som e in sta n ces.
INSTALLATION (F ig. 6)
1. P la ce new pum p-to-block gasket on o il
pump flange, and in se r t pump drive shaft in drive
sock et in pump shaft.
2. Set o il pump assem b ly in position at cylin ­
der block and turn pump as n e c e ssa r y to engage
the pump drive shaft with drive sock et at d istrib ­
utor.
3. Align mounting bolt holes in pump flange
with h oles in block and in sta ll pump to block bolts
(19).
4. In stall o il lin es (10) between fittin gs at
spinner valve and cylinder block.
5. In stall engine o il pan, follow ing the in stru c­
tion s p reviou sly given under "Engine Oil Pan R e­
placem ent."
SIDE SEAL G R O O V E
Figure 8 —Rem oving Seal Low er H a lf From B earing Cap
CRANKSHAFT REAR BEARING OIL
SEAL REPLACEMENT (V8 ENGINE)
REMOVAL
1. Drain o il out of cran k case, then referrin g
to in stru ction s given previou sly in th is manual,
rem ove o il pan, and o il pump.
2. R eferrin g to figure 7, rem ove bolt hole
plugs (5), then rem ove the four rear main bearing
cap b olts, and the two sid e b olts.
3. R em ove rear bearing cap. If n e c e ssa r y to
sta rt bearing cap out of block, u se a pair of round
b ars in serted in bolt h oles to work cap out of block'',
4. R em ove se a l from groove in bearing c|jgJ§P
with screw d riv er a s shown in figure 8. To r e m o m
s e a l upper half from groove in cylinder block u se
a light weight ham m er and soft m etal drift (alum­
inum, copper, or b rass) to sta rt the s e a l out of
Figure 9 —Rem oving Seal U pper H a lf From Block
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL SUPPLEMENT