TM 55-2815-574-24
0061
INSTALLATION - Continued
e.
Install the lower bearings (Figure 6, Item 6) in the main bearing caps (Figure 6, Item 5) with the tangs
on the bearings aligning with the slots on the main bearing caps.
f.
Install the lower thrust washers (Figure 6, Item 4) on both sides of the rear main bearing cap
(Figure 6, Item 5).
g.
Install the lower main bearing caps (Figure 6, Item 5) in their original locations.
NOTE
There are two types of main bearing bolts. One has a fixed washer surface as a part of
the head of the bolt. The other has a separate hardened washer.
h.
Install the bolts (Figure 6, Item 2).
(1)
On bolts (Figure 6, Item 2) with fixed washer, coat the threads and the bolt head contact
surfaces with a light weight grease.
(2)
On bolts (Figure 6, Item 2) with harden washer, coat the threads and both sides of the hardened
washer with a light weight grease.
i.
Install the bearing cap stabilizers (Figure 6, Item 1) on the bearing caps (Figure 6, Item 5).
j.
Install bolts with washer (Figure 6, Item 3) on bearing cap stabilizers (Figure 6, Item 1).
k.
Tighten all bolts (Figure 6, Items 2 and 3) until snug.
l.
Tap the bearing caps (Figure 6, Item 5) sharply with a dead blow hammer to seat them properly.
m.
Torque all main bearing cap bolts (Figure 6, Items 2 and 3) except rear main (Figure 6, Item 5).
(1)
Use a torque wrench to torque bolts (Figure 6, Item 5) with fixed washer to 250 to 260 ft lb
(339 to 353 Nm).
(2)
Use a torque wrench to torque bolts (Figure 6, Item 5) with harden washer to 230 to 240 ft lb
(312 to 325 Nm).
n.
Torque rear main (Figure 6, Item 5) bolts.
(1)
Use a torque wrench to torque rear main (Figure 6, Item 5) bolts to 480 to 600 in-lb
(54 to 68 Nm).
(2)
Tap both ends of the crankshaft (Figure 6, Item 7) sharply with a dead blow hammer two or three
times to properly position the rear main cap (Figure 6, Item 5) on the main bearing journal.
(3)
Use a torque wrench to torque bolts (Figure 6, Items 2 and 3) with fixed washer to
250 to 260 ft lb(339 to 353 Nm).
(4)
Use a torque wrench to torque bolts (Figure 6, Items 2 and 3) with harden washer to
230 to 240 ft lb(312 to 325 Nm).
o.
Use a torque wrench to torque all bearing stabilizer bolts (Figure 6, Item 3) to
70 to 75 ft lb(95-102 Nm).
p.
Turn crankshaft (Figure 6, Item 7) to verify free and smooth rotation.
0061-9
