
INSTRUCTIONS FOR
Radiator
Pressure Test Kit
Stock No.14455 Part No.RPT1
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY TO ENSURE THE SAFE AND
EFFECTIVE USE OF THIS PRODUCT.
GENERAL INFORMATION
These instructions accompanying the product are the original instructions. This document is part of the product, keep it
for the life of the product passing it on to any subsequent holder of the product. Read all these instructions before
assembling, operating or maintaining this product.
This manual has been compiled by Draper Tools describing the purpose for which the product has been designed, and
contains all the necessary information to ensure its correct and safe use. By following all the general safety instructions
contained in this manual, it will ensure both product and operator safety, together with longer life of the product itself.
AlI photographs and drawings in this manual are supplied by Draper Tools to help illustrate the operation of the product.
Whilst every effort has been made to ensure the accuracy of information contained in this manual, the Draper Tools policy
of continuous improvement determines the right to make modifications without prior warning.

MANUAL PRESSURE TESTING INSTRUCTIONS
1. IMPORTANT: For detailed and concise instructions on
the correct use of this kit, refer to the vehicle
manufacturer’s or Haynes workshop manual.
2. WARNING: Do not over pressurize the system, as
excessive pressure may cause failure of the radiator, hoses
etc.
3. Carefully undo and remove the radiator or expansion
tank pressure cap (use a cloth or gloves and arm
protection if the radiator cap is known to be hot).
4. Select the correct adaptor and configuration of the
stationary seat accessories and ensure it is securely fitted
to the filler neck of the radiator or expansion tank (Fig.1).
5. Attach the ‘push-fit’ connector (A) onto the male
tailpiece of the adaptor fitted to the radiator.
6. Depress the hand pump handle (B) and check the
reading indicated on the pressure gauge (C). Ideal
readings should range between 12-15PSI (always check
relevant manufacturer’s or Haynes workshop manual),
if the pressure level is below this range or the pressure
drops during testing, a leak in the coolant system
(radiator, hose, etc.) is the most likely source of the
problem.
7. Once the test is complete, release the air pressure by
depressing the quick release valve (D). Disconnect the
‘push-fit’ connector (A) and adaptor assembly and
replace the radiator filler cap securely.
FIG.1
FIG.2
(C)
(D)
(A)
(B)
USING KIT WITH COMPRESSED AIR LINE:
- WARNING: Input air pressure must be set to below 25psi
on compressed air line BEFORE connecting to cooling
system. Failure to do so will cause damage to the system
and danger to the user.
- Proceed as in steps 1-4 above.
- Ensure air tap (E) is in closed position (see Fig.3).
- Connect compressed air line to air inlet (F).
- Connect to adaptor using quick-coupling (G).
- Slowly open air tap (E) until air pressure gauge (H)
shows the required test pressure (always check relevant
manufacturer’s or Haynes workshop manual).
- Once the test is complete, completely close air tap (E),
disconnect compressed air line (F) then carefully re-open
air tap (E) to release stored pressure and remove from
cooling system. Finally, replace the radiator cap securely.
- 1 -
FIG.3
(G)
(F)
(H)
(E)