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Perkins 4012 series Essential Diesel Engine Bolt Tightening Torques

 

Perkins 4012
Side Bolts and Main Bearing Bolts

step 1 = snug

Main Bearing Bolts
step 2 = 100 lb.ft, 135 Nm
step 3 = 200 lb.ft, 270 Nm
step 4 = 400 lb.ft, 540 Nm
Step 5 = 580 lb.ft, 783 Nm

Side Bolts
step 2 = 124 lb.ft, 168 Nm

Perkins 4012
Cylinder Head Bolts

Early types = 550 lb.ft, 750 Nm
Later types (waisted) = 530 lb.ft, 720 Nm

Perkins 4012
Connecting Rod Bolts

M16 dry threads
210 lb.ft, 285 Nm

Perkins 4012 46TAG1A Diesel Engine Specs

 

Perkins 4012
Arrangement


V12 Turbocharged

Perkins 4012
Bore, stroke and compression ratio


Bore
160 mm

Stroke
190 mm

Compression ratio
13.6:1

Perkins 4012
Power


Full load continuous alternatour output
1080 kVA @ 1500 rpm
1085 kVA @ 1800 rpm

Full load continuous engine output
909 kW, 1219 hp @ 1500 rpm
914 kW, 1226 hp @ 1800 rpm


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