TM 5-3805-255-14
0018
Table 1. Field PMCS for the H100C Loader - (Continued).
LOCATION
ITEM TO
CHECK/
NOT FULLY MISSION
SERVICE
CAPABLE IF:
ITEM NO. INTERVAL
PROCEDURE
Annually
Engine Valve
NOTE
23
Clearance
(Cont.)
Be sure that the number one piston is on the compression
Adjustments
stroke by turning both push rods by hand to determine that both
intake and exhaust valves are closed. Valves are closed when
push rods are loose and can be turned easily.
b. Before adjusting valve clearance,
valve bridge must be adjusted. Adjust
intake valve bridges for cylinders 1, 2,
and 4 and exhaust valve bridges for
cylinders 1, 3, and 5 as follows:
1. Loosen bridge adjusting screw
nut and back out screw several times.
2. Position fingers on bridge
directly above bridge guide and hold
bridge down firmly against cam side
valve. Be sure screw does not contact
valve.
3. Turn screw in until it just
touches valve. Turn screw an
additional 20 degrees to 30 degrees to
ensure uniform contact of bridge on
guide.
4. While holding adjusting screw in
this position, tighten locknut
c. With cylinders in this position,
adjust valves under bridges previously
adjusted as follows:
1. Loosen rocker lever nut and
adjusting screw.
2. Insert a feeler gauge 0.375 in.
(9.5 mm) wide or less and of proper
thickness, at point A between bridge
and rocker lever.
3. Tighten adjusting screw until
feeler gauge is snug. While holding
screw in this position tighten rocker
lever nut to 85 lb-ft (115 Nm).
0018-32
