Chevrolet 1977 light duty truck, Руководство по обслуживанию

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4.
R em o v e m o u n t-to -tra n s m is s io n bolts, th en
remove mount.
5. On P Series with m anual transmission and
propeller sh aft park in g brake, install new m ounting
cushions and bolts.
6. Install new m ount on transm ission.
7. W hile lowering transmission, align and start
c rossm em ber-to-m ount bolts.
8. T orque bolts to specifications then bend lock
tabs to bolt h e a d as applicable.
IN T A K E M A N IF O L D
Removal
1. D r a in ra d ia to r and remove air cleaner.
2. Disconnect:
• Battery negative cable at battery.
• R a d ia to r upp er hose and heater hose at
m anifold.
• W a te r p u m p by-pass at w ater p u m p (M ark IV
only).
• Accelerator linkage at carburetor.
•
Fuel line at carburetor.
• Crankcase ventilation lines.
• Spark advance hose at distributor.
3. Remove distributor cap and m ark rotor position
with chalk, then remove distributor.
4.
R em ove (as required) air cleaner bracket, air
compressor an d bracket, accelerator return spring and
bracket, and accelerator bellcrank.
5. R em ove generator u p p e r m ou n tin g bracket.
6. R em ove m an ifo ld attaching bolts, then remove
m a n ifo ld and carb u reto r as an assembly. Discard gaskets
and seals.
7. If m an ifo ld is to be replaced, transfer:
• C a rb u re to r and ca rb u re to r attaching bolts.
• T e m p e ra tu re sending unit.
• T h e rm o sta t with housing (use new gasket).
•
H eater hose and w ater p u m p by-pass adapters.
• E G R Valve (use new gasket) (if applicable).
• TVS switch (if applicable).
• V acuum fitting(s).
• C hoke spring assembly (where applicable).
Installation
1. Clean gasket and seal surfaces on manifold,
block, and cylinder heads.
2. Install m anifold seals on block and gaskets on
cylinder heads (fig. 6A-9V). Use sealer at w ater passages
and w here seals butt to gaskets.
3. Install m anifold and torque bolts to specifica­
tions in the sequence outlined in fig. 6A-10V.
4. Install (if removed) air cleaner bracket, air
compressor a n d bracket, accelerator bellcrank.
5. Install distributor, positioning rotor at chalk
mark, then install distributor cap.
6. Connect:
• S park advance hose at distributor.
• Crankcase ventilation lines.
Fig. 6A-9V~lntake Manifold Gasket
Seal Location
• Fuel line at carburetor.
• Accelerator linkage at carburetor.
• W a te r p u m p by-pass at w ater p u m p (M ark IV
only).
• Battery negative cable at battery.
7. Install air cleaner.
8. Fill with coolant, start engine, adjust ignition
tim ing and c a rb u re to r idle speed an d check for leaks.
E XH AUST M A N IF O L D
Removal
1. Remove carb u re to r heat stove pipe.
2. On Small V8 engine, remove the spark plug
wiring heatshields.
3. On M ark IV V8 engine, remove spark plugs.
4. Disconnect exhaust pipe from manifold and
hang exhaust pipe from fram e with wire.
5. Remove end bolts then remove center bolts and
remove manifold.
Installation
N O TE: If installing a new right side manifold, the
c arb u reto r heat stove must be transferred from the
old unit (fig. 6A -1IV 6V-12V).
1. Clean m atin g surfaces on manifold an d head,
then install m an ifo ld in position and install bolts
(fingertight).
2. Torque m an ifo ld bolts to specifications in the
sequence shown on torque chart at end o f section.
3. Connect exhaust pipe to manifold. Use new
gasket o r packing.