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Maddox MD12 Owner's Manual page 3

Large valve spring compressor

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Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the
beginning of this document before set up or use of this produ
Note: Refer to vehicle service manual
for engine head removal process.
1.
Remove head, then place head on a
stable work bench or head stand.
2.
Secure head in a position where
valves are facing down and do
not make contact with work bench
surface to prevent damage to valve.
3.
Place a properly sized socket
onto spring retainer cap.
4.
If needed for clearance, place
an extension onto socket.
5.
Lightly tap socket or extension with a
striking tool to loosen collets from spring
retainer cap and valve spring keepers.
6.
If applicable, remove the clip
from the valve keeper.
7.
Determine which Release Adapter best
fits the circumference of spring retainer
cap and thread onto Inner Screw.
Inspection, Maintenance and Cleaning
Procedures not specifically explained in this manual
must be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Do not use damaged equipment. If abnormal noise or vibration
occurs, have the problem corrected before further use.
1.
BEFORE EACH USE, inspect
the general condition of the tool.
Check for cracked or broken parts,
damaged hoses, loose fittings,
misalignment or binding of moving
parts, and any other condition that
may affect its safe operation.
Item 58802
For technical questions, please call 1-888-866-5797.
CAUTION: TO PREVENT PROPERTY
DAMAGE: ensure Cup and Release
Adapter to not make contact with head
while locking Valve Spring Compressor.
8.
Carefully center Cup onto
valve and Release Adapter
onto spring retainer cap.
9.
Grip Valve Spring Compressor with both
hands and push Handle forward to lock.
10. Turn Adjusting Screw clockwise to
compress valve spring to expose collets.
11. Remove collets using a magnet.
12. Loosen Adjusting Screw to release
pressure before removing Compressor.
13. Hold valve in place and
remove spring assembly.
14. Carefully remove valve.
Note: Refer to vehicle service
manual for engine head assembly
and installation process.
2.
AFTER USE, clean external
surfaces of the tool when necessary
with a clean, damp cloth and mild
detergent. Store the Valve Spring
Compressor tool in a clean, dry, safe
location out of reach of children.
ct.
Page 3

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