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6F-2
1977 PONTIAC SERVICE MANUAL
SLOT I N PlPE
CROSSOVER TO EXH. PlPE
318 REMAINING JOINTS
EXHAUST SYSTEM U-BOLT CLAMPS
I
POSITION CLAMP AS SHOWN I N RELATION TO SLOT TO
PREVENT GAS LEAKS
2895
Fig. 6F-1 Installation of Exhaust System Clamp
converter, pipes and mumers.
ON-CAR SERVICE
CATALYST
Fig. 6F-3 Threaded Fill Plug Removal
Removal
If necessary, the catalyst in the converter can be replaced
b. Pressed plug
-
Drive a small chisel between the
on the car with Tool No. J-25077.
converter shell and the fill plug. Use care not to damage
NOTE: Separate hoses should be attached to the
shell (Fig. 6F-4). Continue to deform fill plug until
aspirator and the vibrator with maximum available
it
be removed with ,,liers (Fin. 6l2-5).
Minimum of 60 psi in each hose.
If the car has dual tailpipes, attach the aspirator to one
pipe and place a plug in the other pipe.
1. Install aspirator, Fig. 6F-2.
Fig. 6F-4 Chisel Pressed Plug
NOTE: D o not pry fill plug from converter as damage
to fill plug sealing surfaces could result.
Fig. 6F-2 Installation of Aspirator
4. Clamp on vibrator and catalyst container (Fig. 6F-6).
Use adapter J-25077-6 if converter was built with pressed
2. Connect air supply line to aspirator to create a vacuum
in the converter to hold beads in place when fill plug is
plug.
removed.
5. Disconnect air supply to aspirator and connect air
supply to vibrator. Catalyst will now drain from the converter
3. Remove converter fill plug as follows:
into the empty container.
6. When all the catalyst has been removed from the
a. Threaded plug
-
Remove with 3/4" hex wrench or
converter, disconnect air supply to vibrator and remove
Tool No. J-25077-3 (Fig. 6F-3).
container from the converter.
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