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CAT D340, D343, D348 engine specifications and manuals - amp

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Essential bolt tightening torques are
 main bearing cap bolt torque, 
 connecting rod cap bolt torque 
 and the cylinder head bolt torques.
 


 
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CAT D340, D343 and D348 engine specs, manuals and essential bolt torques - amp

 
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CATERPILLAR D340 D343 and D348 Essential Diesel Engine Bolt Tightening Torques

 
CAT D340, D343, D348
Main Bearing Bolts

Step 1 = 81 Nm, 60 lb.ft
Step 2 = + 120 degrees

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CAT D340, D343, D348 
engine manuals and specs
 
CAT D340, D343, D348
Connecting Rod Bolts

Step 1 = 120 Nm, 90 lb.ft
Step 2 = + 180 degrees

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CAT D340, D343, D348 
engine manuals and specs
 
CAT D340, D343, D348
Cylinder Head Bolts

Step 1 = 240 Nm, 175 lb.ft
Step 2 = 340 Nm, 250 lb.ft
Step 3 = (repeat step 2)

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CAT D340, D343, D348 
engine manuals and specs
 

CATERPILLAR D340 D343 and D348 Diesel Engine Spec Sheets

 
D343 spec sheet 
4 pages, click to download pdf

D348 spec sheet 
2 pages, click to download pdf

CATERPILLAR D340 D343 and D348 Diesel Engine workshop repair Manuals

 
CAT D348 specification manual 
186 pages - click to download.

CAT D348 disassembly and assembly manual 
115 pages - click to download.

CATERPILLAR D340 D343 and D348 Diesel Engine Specs

 
CAT D340 D343 and D348
Displacement, arrangement,
bore and stroke

Displacement 
and arrangement

D340 - 9.7 liter, 595 CID 
4 Cylinder in line 

D343 - 14.6 liter, 893 CID
6 Cylinder in line 

D348 - 29.3 liter, 1786 CID
v12 turbo aftercooled engine

Same bore and stroke 
for all three

Bore
5.4 in, 137 mm
 
Stroke
6.5 in, 165 mm

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CAT D340, D343, D348 
engine manuals and specs
 
CAT D340 D343 and D348
Power

D340 - In Scraper 619C
285 hp, 212 kW @2100 rpm

D343 - Marine T
continuous (shaft) 238 hp, 
177 kW @1800 rpm

Max (flywheel) 
395 hp, 294 kW @2000 rpm

D343 - Marine TA
continuous (shaft) 354 hp, 
263 kW @1800 rpm

Max (flywheel) 
550 hp, 409 kW @2000 rpm


D348 - Marine TA
continuous (shaft) 703 hp, 
523 kW @1800 rpm

Max (flywheel) 
1100 hp, 818 kW @2000 rpm

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CAT D340, D343, D348 
engine manuals and specs
 
CAT D340 D343 and D348
Dimensions, weight and 
compression ratio

Dimensions
D343 
approx

length - 77 in, 1955 mm 
(incl heat exchanger)

width - 48 in, 830 mm

height - 39 in, 978 mm	

Weight
D343
approx
2230 lbs, 1014 kg

D348
approx
8500 lbs, 3850 kg

Compression ratio
15.0:1

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CAT D340, D343, D348 
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