Pontiac Fiero 1988 Service Manual page 311

6A1-10 2.5L ENGINE
m
en
1 - SPLASH GUARD
2 - BALANCE COUNTER-
WEIGHT ASM
3 - GEROTOR OIL PUMP
4 - OIL PUMP COVER ASM
5 - PRESSURE R E G U L A T O R
VALVE
6 - RESTRICTOR
7 - FILTER
8 - COUNTERWEIGHTED
BALANCE SHAFT
9 - C O U N T E R W E I G H T E D
BALANCE SHAFT GEAR
1 0 - G E R O T O R OIL PUMP
DRIVE
J 2 0 0 0 8 - 6 A 4
Fig. 16 Balancer Assembly Components
NOTICE:
To avoid engine damage,
all
pump
cavities must be packed with petroleum jelly
before
installing the gears to assure priming.
2. Pump gears.
3. Oil pump cover assembly.
4. Pressure regulator valve and spring.
5. Plug or pin.
7.
-><H
1.
2.
9 Important
Make sure the pin is properly secured.
Oil pump cover assembly - torque bolts to 10
N-m
(7
lb. ft).
*22* Clean
Oil pump intake screen.
Oil pan.
Filter.
Restrictor.
Install or Connect
Oil pan.
Fill crankcase with clean engine oil.
]9
Inspect
• Remove the oil pressure sending unit and
install an oil pressure gage.
• Start engine and observe oil pressure.
NOTICE:
If the oil pressure does not build up
almost immediately, remove the oil pan and
examine pump. If necessary, disassemble the oil
pump and repack all cavities with petroleum jelly.
Running the engine without measurable oil
pressure will cause extensive damage.
• Check for bearing knock. If necessary,
dismantle and check for adequate oil supply
and proper clearances.
REAR M A I N BEARING OIL SEAL A N D / O R
F L Y W H E E L
4HM Remove or Disconnect
Important
1.
2.
3.
4.
• The rear main bearing oil seal is a one piece.
unit and can be replaced without removal of
oil pan or crankshaft.
Transmission assembly - See Section 7.
Retaining bolts and flywheel.
If equipped with manual transmission
plate and disc.
Rear main seal - pry out.
pressure
Clean
Block and
surfaces.
Install or Connect
Tool required:
crankshaft-to-seal mating