1. SAFETY
IMPORTANT: Always refer to the vehicle manufacturer’s service instructions, or proprietary manual to establish the current procedure and
data. These instructions are provided as a guide only.
9 Ensure all Health and Safety, local authority, and general workshop practice regulations are strictly adhered to when using product.
9 Maintain tools in good and clean condition for best and safest performance. DO NOT use test kit if damaged.
9 Account for all tools and parts being used and do not leave them in, or on the engine after use.
9 Ensure you have read and understood the safety aspects of dealing with the fuel injection system and petrol in general before commencing.
9 Wear approved eye protection. A full range of personal safety equipment is available from your Sealey dealer.
9 Keep yourself, clothing and test equipment away from all moving or hot engine parts.
9 Do not wear jewellery and tie back long hair.
9 Before performing a test with the engine running (unless the manufacturer's manual states otherwise), set the parking brake and place
the gear selector in neutral or park, and block the drive wheels.
9 Exhaust gas contains deadly poisonous gases. The test area must be well ventilated - route the exhaust gas outdoors.
2. INTRODUCTION
Used to establish the working condition of the catalytic converter and silencer by measuring the relative back pressure of the system.
Simply connect into the exhaust system using either of the two oxygen sensor dummy adaptors supplied in the kit. Gauge features a
colour-coded scale for easy diagnosis and reads both pressure and vacuum so can be used on other areas of the vehicle allowing testing
of low pressure fuel systems or engine vacuum. Supplied with gauge hanging chain to allow hands-free operation.
3. CONTENTS
CATALYTIC CONVERTER BACK PRESSURE
TEST KIT
MODEL NO: VSE953
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these instructions,
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS &
CAUTIONS. USE THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO
SO MAY CAUSE DAMAGE AND/OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE
FOR FUTURE USE.
PART PART NO. DESCRIPTION
1 VSE953.01 Gauge
2 VSE953.06 Oxygen sensor adaptor M12x1.25
3 VSE953.05 Oxygen sensor adapter M18x1.5
4 VSE953.04 Plastic double ended cone
5 VSE953.09 Plastic T piece
6 VSE953.08 Large brass cone adapter
7 VSE953.07 Small brass cone adapter
8 VSE953.03 Hose
9 VSE953.02 Gauge hanging chain
VSE953 Issue 2 (ALL) 16/10/23
Original Language Version
© Jack Sealey Limited
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