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CATERPILLAR 3412 Essential Diesel Engine Bolt Tightening Torques

 

CAT 3412 Main Bearing Caps
Step1 = 190 lb.ft, 260 Nm
Step2 = plus 120 degrees

CAT 3412 Connecting Rod Bolts
Step 1 = 80 Nm, 60 lb.ft
Step 2 = +120 degrees

CAT 3412 Cylinder Head Bolts
Step 1 = 270 Nm, 200 lb.ft
Step 2 = 447 Nm, 330 lb.ft
Step 3 = 447 Nm, 330 lb.ft

CATERPILLAR 3412 Diesel Engine Specs

 

CAT 3412 Displacement, bore and stroke

Displacement
27.0 liter
1649 CID

Bore
5.4"
137.2 mm

Stroke
6.0"
152.4 mm

CAT 3412 Arrangement, dimensions and weight

Arrangement
V12 turbo

Dimensions
approx:
3412E Marine - length to flywheel housing
Length = 74.4 in, 1890 mm
Width = 53 in, 1354 mm
Height = 54 in, 1372 mm

Weight
approx:
3412E Marine = 5584 lbs, 2533 kg
3412TA = 5420 lb, 2463 kg

CAT 3412 Power and compression ratio

Power
Genset Prime Power:
3412 = 725 kVa, 580kw @1500 rpm

Marine:
3412E = 1400 hp, 1044kw @ 2300 rpm

Compression ratio
3412 TA Gen Set = 13:1
for others check piston

Crown part number
7C2888, 1352837, 149-5566
Crowns = 16.25:1

180-7352 Crown = ratio 16.6:1
pistons 7E 8656 & 7E 0692
= ratio 15.6:1

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