TM 5-3810-300-24&P-3
1.2.2 EXHAUST VALVES
Fig. 10-Removing Press-Fit Exhaust Valve Bridge Guide
and was used with a hardened steel valve bridge. The
Remove Exhaust Valve Bridge Guide
soft valve bridge may be identified by the letter "S" forged
on one side of the bridge.
Remove the valve bridge guide from the four valve
cylinder head as outlined below:
Avoid a combination of a soft steel guide and soft steel
bridge -- otherwise premature wear of the bridge and
guide will occur. For service, a threaded valve bridge
1.
Remove the former threaded guide, identified by the
guide of hardened steel is available and is identified by a
hexagon section at the lower end, with a J 6846 thin
3/16" or 1/4" drill spot in the top end.
wall socket.
In addition, a new valve bridge adjusting screw with a
redesigned valve contact surface replaced the former
2.
Remove the press-fit guide (Fig. 10) with tool set J
adjusting screw. The new screw may be identified by the
7091-01 as follows:
machined (undercut) surface at the lower end of the
screw. Only the new adjusting screw will be available for
service and it is recommended that the former adjusting
a. File or grind two diametrically opposite notches
screws be replaced at the time of an engine overhaul.
1/16" deep in the side of the guide,
approximately 1-1/4" to 1-1/2" from the upper
end.
Fig. 11-Removing Broken Exhaust Valve Bridge Guide
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