chevrolet truck Light Duty Truck 1994 Series Repair Manual Download

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3. Camshaft and balance shaft cup plugs (89) to

proper depth.

• Coat plug outside diameter with sealant (GM

P/N 1052080 or equivalent).

4. Oil filter adapter, gasket, and bolts.

S t

Tighten

• Bolts to 22 N-m (16 lbs. ft.)

5. Coolant drain plugs.

Tighten

• Plugs to 30 N-m (22 lbs. ft.).

6. Oil pressure fitting and sensor.

❖

• Fitting to 11 N-m (96 lbs. in.) plus turn for align

ment if necessary.

PISTON AND CONNECTING

ROD ASSEMBLY

NOTICE: The connecting rod and cap need to

be stored together as mating parts, so they

may be reassem bled in the sam e wear pat

tern an d balance from which th e y were

removed.

Refer to SECTION 6A and perform the following:

Disassemble

•  Components  as  required.
•  Mark  the  parts  if  required.
•  Marking  them  from  the  front  to  the  rear,  with  the

engine in an upright position and viewed from the
front.

— The right bank is numbered 1-3-5.
— The left bank is numbered 2-4-6.

j y | Clean

Components as outlined.

Inspect

Components as outlined.

Measure

Piston  pin  diameter  and  clearance.
Piston-to-bore  clearance  and  fit  pistons  as  outlined.
Ring  end  gap  and  ring  clearance.

Assemble

Components  as  outlined.
Check  the  connecting  rod  and  cap  for  identification
marks.
The  numbers  on  the  connecting  rod  and  bearing
cap  must  be  on  the  same  side  when  installed  in
the  cylinder  bore.  If  a  connecting  rod  is  ever  trans
posed  from  block  or  cylinder  to  another,  new  con
necting  rod  bearings  should  be  fitted  and  the
connecting  rod  should  be  numbered  to  correspond
with  the  new  cylinder  number.

Inspect

• Ring fit.

UPPER AND LOWER INTAKE

AND EXHAUST MANIFOLDS

❖

Disassemble

• Fuel control and all electrical components from the

upper and lower intake manifolds. Refer to the

1993 Light Duty Truck Fuel and Emissions Service

Manual for the removal of these components.

Clean

NOTICE: Do not immerse the upper or lower

intake manifolds in solvent with electrically

operated com ponents attached or damage

may occur to these components.

NOTICE: Do not clean the manifolds with any

solution that contains silicone to prevent

possible oxygen sensor contamination.

• Old pieces of gasket from the gasket surfaces.
• Excessive carbon buildup in the exhaust passages

of the intake manifold.

• Scale and deposits from the coolant passages of

the intake manifold.

• EGR passage of excessive carbon deposits.

Inspect (Figure 24)

• Manifolds for cracks, broken flanges, and gasket

surface damage.

• Alignment (flatness) of exhaust manifold flanges

and  upper  and  lower  intake  manifold  mating  sur
faces.  Use  a  straight  edge  and  feeler  gage.  If  the
flanges  or  mating  surfaces  do  not  align,  the  mani
fold  is  warped  and  should  be  replaced  (figure  24).

chevrolet truck Light Duty Truck 1994 Series, Repair Manual

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