(14) Repeat steps (11) through (18) above until
five remaining cylinder head, valve, and liners are
NOTE
removed.
At reassembly, liner is threaded into
head by a clockwise motion, using
NOTE
tool set up as illustrated in view B of
At installation of cylinder head,
on left hand fulcrum. Turn liner until
torque the four holddown nuts to
it is reasonably hand tight, then place
between 90 and 100 ft lb.
a weight of 160 pounds on end of
handle which should be 56 feet long.
(15) Install cylinder head, valve, and liner by
This formula is: 160 lbs x 5 1/2 x
reversing the procedures in steps (1) through (14) above.
2.25=1980 ft lb.
b. Disassembly and Reassembly.
Weight on handle will turn cylinder head onto liner to
torque of approximately 2,000 ft lb.
(1) Pull out and remove piston and connecting
rod through bottom of cylinder liner (26, fig. 3-57) and
(17) Reassemble cylinder head, valve, and
remove seal (23).
liner by reversing the procedures in steps (1) through
(2) Remove packing (22) from cylinder jacket
(16) above.
(24).
(3) Place cylinder head and liner (1, view A,
c. Cleaning, Inspection, and Repair.
(4) Position ratchet gear (8) with dowel pins
(1) Clean all parts and dry thoroughly before
(7) aligned with mounting holes in cylinder head, then
inspection or reassembly.
secure gear (8) to head with thumbscrews (6).
(2) Inspect guide to stem clearance. Try with
(5) Install ratchet (4) and handle (5) on tool (3)
new valve. If clearance is more than 0.003 inch, replace
on fulcrum shown in view A of fig. 3-58.
the guide. When installing new guide, press guide in
(6) Separate cylinder head (5, fig. 3-57) from
until the assembled height from cylinder head to top of
liner (26) by rotating ratchet gear (8, view A, fig. 3-58)
guide is 15/8 inches. Ream guide to between 0.435 and
counterclockwise.
This is accomplished with a
0.436 inch.
downward movement of handle (5).
(3) Inspect valve seats for burs, pits, and
(7) Remove cylinder head (5, fig. 3-7), seal
deep or wide wear. Replace seats as required. Reface
(23), and liner (26) from tool (3, fig. 3-58).
valve seats with a 45 stone. Valve seat width is '12
(8) Remove seal (29, fig. 3-57), seal (28),
inch. Use a 20 stone in tool to narrow seat width.
lower cylinder jacket (27), and seal (25) from bottom of
Check concentricity of seat to guide with dial indicator.
liner (26).
Concentricity must be within 0.002 inch.
(9) Remove upper cylinder jacket (24) and
(4) Inspect liner for cracks, pits, or grooves,
two seals (25) from liner (26).
and out-of-round. Inspect valves for warpage of stem,
(10) Use a valve spring compressor to
burned stem or face. Reface lightly burned valves.
compress spring, then remove lock (16).
Replace defective valves or liners.
(11) Remove compressor tool then remove cap
(15), inner and outer valve springs (14 and 13) and
3-55. Cylinder Block, Sleeves, Main Bearing Caps
spring seat (12) from cylinder head (5).
and Head (Engine Model D333TA)
(12) Remove
valve (1), seat insert
(2),
packing (10), and shim (11) from cylinder head (5).
a. Preparation.
(13) Remove nut (20), gasket (19), and guide
(1) Remove glow plugs and harness (TM 5-
(9) from cylinder head (5).
3810-201-12).
(14) Remove two pipe plugs (17 and 18) from
(2) Remove flywheel housing (para 3-41).
cylinder head (5).
(3) Remove front cover and timing gear train
(15) Remove seal (3) and ferrule (4) from
cylinder head (5).
(4) Remove air cleaner (TM 5-3810-201-12).
(16) Repeat the procedures in steps (1)
through (15) above for disassembly of the five remaining
cylinder heads, valves, and liners.
AGO 20051A
3-69
