TM5-6115-593-34
NAVFAC P-8-631-34
TO-35C2-3-463-2
cylinder sleeve installation.
(2) Be certain crankshaft, main bearing shells, and
block main bearing bore are clean. Place all
upper main bearing shells in position in block;
locate in place with tang. Upper shells have oil
holes in center that align with oil passages in
block leading to oil header.
(3) Lubricate crankshaft journals and upper main
bearing shells with a thin coat of clean engine
lubricating oil.
(4) Using a suitable chain hoist and hooks
protected by rubber hose, carefully lower
crankshaft into position.
(5) Slide upper thrust washers (19, figure 13-51) in
position around No. 7 journal. Lower thrust
rings are dowelled to main bearing caps and
hold upper rings in position.
NOTE
Thrust rings are available in 0. 01 inch
(0. 25 mm) and 0. 020 inch (0. 51 mm)
oversizes
for
reconditioned
crankshafts.
(6) Place lower main bearing shells (11, 13, 15,
and 17) in caps and engage locating tangs.
Lubricate with a thin coat of clean engine
lubricating oil.
(7) Install main engine bearing caps so numbers
stamped on cap correspond with numbers
stamped on block.
NOTE
The
cylinder
block
is
precision
machined for the cap to fit into its
correct position. Never file caps to
reduce bearing clearance. Main
bearing caps are not interchangeable.
(8) Install new lockplates (37, figure 13-50) (base
"L" of lockplate down over cap to outside wall
of engine). Lubricate lockplates (37), and
capscrews (35 and 36) with clean engine
lubricating oil.
CAUTION
All main bearing capscrews on right bank
(fuel pump side) except No. 7 are dowel
fit.
(9) Torque each capscrew in alternate steps as
follows, and secure lockplates.
(a) Start capscrews by hand.
(b) Tighten both capscrews on each cap
alternately to 200 to 210 footpounds
(271 to 285 joules).
(c) Tighten both capscrews on each cap
alternately to 410 to 420 foot-pounds
(556 to 570 joules).
(d) Loosen both capscrews to remove all
tension.
(e) Tighten both capscrews on each cap
alternately to 200 to 210 footpounds
(271 to 285 joules).
(f) Tighten both capscrews on each cap
alternately to 420 to 460 footpounds
(271 to 285 joules).
(g) The breakaway torque in the tightening
direction is 420 to 490 foot-pounds (570
to 666 joules).
(10) Test crankshaft for free turning. Operation
must be free enough so it can be hand
cranked easily.
(11) Attach a dial indicator gauge securely to
cylinder block with contact point of gauge
resting on crankshaft flange and face.
(12) Move crankshaft toward front
13-104
