Catalytic Converter Heatshield - Replacing When Loose
88vw12GROUP
26
NUMBER
88-01 May 16, 1988
MODEL(S):
Golf
Jetta m.y. 1985-1988
SUBJECT:
Catalytic converter, heatshield replacement
A loose catalytic converter heatshield can either be re-welded or replaced separately without replacing the entire catalytic convener.
The replacement shield part number is 191 253 243C, which fits all Golf/Jetta converters.
The shield is made of Stainless Steel and MUST be welded with Stainless Steel wire using a MIG welder. The inert gas used must meet the following specifications to ensure a weld which is as corrosion resistant as possible.
1) Argon 92%, Oxygen 8% or less or
2) Argon 97.5%, Carbon Dioxide 2.5% or less
Arc and Acetylene gas welding are NOT to be used for this repair because damage to the heatshield will occur in the process. If your shop doesn't have a MIG welder with the specified gases available; sublet the work to a local welding shop that does.
CAUTION CAUTION
Part numbers are for reference Always disconnect the battery
only. Always check with your when using electrical welding
Parts Department for latest equipment.
information.
Fig. 1 - Old Heat Shield (CIS-E):
Fig. 2 - Replacement Shield (CIS-E):
Fig. 3 - Replacement Shield (Jetta GLI, 16 valve):
^ remove old shield by grinding off old welds (see Fig. 1) (Do NOT use an air chisel or other impact type equipment)
^ completely grind off welds from the original shield at the converter outlet to avoid interference with the new shield
^ weld the entire front flange of the replacement shield to the inlet neck on the converter. The semicircular shape of the flange conforms exactly to the inlet shape (see Figs 2 & 3)
^ weld the shield to the pipe at the outlet using the two vertical slots (70 mm from the rear of the shield) (see Fig. 3) A slight amount of pressure may need to be applied to hold the shield in its proper location during welding