Chevrolet 70 1969 Series, Руководство по ремонту

Страница: 284 / 913

G ASO LINE ENGINES 6A - 13
1 Oil Inlet Tube and
Screen
2 Governor Oil Line
Assembly
3 Elbow
4 Flange Bolts
5 Gaskets
6 Pump Mounting Bolts
10
Oil Pump Assembly
Governor Spinner
Valve
Bracket
(Welded to Item 1)
Spinner Cover Bolt
and Lock Washer
Figure 18— Oil Pump Installation on Engine
With Hydraulic Type Governor
2. Drain oil from oil pan.
3. Remove oil pan bolts and stud nut, then
remove oil pan. Scrape off any portions of gasket
which adhere to oil pan flange or to bolting flange
on cylinder block and engine front cover.
O IL PAN IN S T A L L A T IO N
1. Use gasket cement to hold new oil pan gas­
ket in place at cylinder block and front cover.
2. Position oil pan at engine and install attach­
ing bolts and stud nut.
N O T E : Three of the oil pan bolts are longer
than the others, and these must be installed at rear
of oil pan at reinforcement. These bolts may be
readily identified by internal-external type lock
washers. Other pan bolts are shorter.
3. Install drain plug with new gasket, then fill
crankcase with engine oil to
stick.
'F U L L ” mark on dip
ENGINE OIL PUMP REPLACEMENT
R E M O V A L
1. Remove engine oil pan as previously direc­
ted under "Engine Oil Pan Replacement.”
2. On engines with hydraulic type governor
(fig. 18), remove governor oil line assembly.
3. Remove two special pump mounting bolts,
then remove engine oil pump with oil inlet tube
and screen assembly attached. Oil pump drive shaft
will usually remain in socket in oil pump shaft.
INSPECTION A N D R E P L A C E M E N T O F
SU C T IO N TUBE A N D S C R E E N
Inspect screen and tube for damage. If screen
is clogged, the assembly should be removed from
pump and thoroughly cleaned; or a new suction tube
and screen assembly installed.
When installing tube and screen assembly on
oil pump, use new gasket between tube flange and
pump body. Install all attaching bolts loosely, then
tighten bracket bolt first. Correct torque is 20 to
25 foot-pounds. Finally, tighten tube flange bolts.
Figure 17 shows engine oil pump without hydraulic
governor spinner valve.
IN S T A L L A T IO N
1. Place new pump-to-block gasket on oil
pump flange, and insert pump drive shaft in drive
socket in pump shaft.
2. Set oil pump assembly in position at cylin­
der block and turn pump as necessary to engage
the pump drive shaft with drive socket at upper
end.
1 Drive Housing 4 Gasket
2 Housing Nut 5 Adapter Mounting Bolt
3 Tachometer Adapter 6 Flywheel Housing r.,m,
Figure 19— Tachometer Drive Installation
CHEVROLET SERIES 70-80 HEAVY DUTY TRUCK SHO P M ANUAL