3408 & 3408B DIESEL TRUCK ENGINE Caterpillar


Crankshaft (4N920 & 7N3410)

Usage:

(1) Maximum length of pin out of crankshaft face ... 6.4 mm (.25 in.)

(2) Thickness of thrust plates, at center main bearing ... 5.74 ± 0.04 mm (.226 ± .002 mm)

(3) End play for the crankshaft (new thrust plates) ... 0.13 to 0.50 mm (.005 to .020 in.)

(4) Minimum torque for 5 plugs ... 23 N·m (17 lb.ft.)

"Stake" (make a mark with a punch) the crankshaft to hold the plug tight.

(5) See Connecting Rod And Main Bearing Journals.

(6) Length of dowel out of the crankshaft ... 4.1 ± 0.5 mm (.16 ± .02 in.)

(7) Front seal group. Not to be used if seal and sleeve are separated. Install the seal group in the front accessory drive housing with the seal positioned as shown. See Special Instruction SMHS8008. Check installation as follows:

Arrow on seal ... clockwise

Sleeve to be flush with front face of crankshaft within ... 0.13 mm (.005 in.)

Distance from edge of sleeve to seal Dimension C ... 4.9 ± 0.6 mm (.19 ± .02 in.)

(8) Maximum permissible temperature of the gear for installation on the crankshaft ... 232°C (450°F)

NOTE: Install gear with "V" mark to the outside.

(9) Rear seal group. Not to be used if seal and sleeve are separated. Install the seal group in the flywheel housing with the seal positioned as shown. See Special Instruction SMHS8008. Check installation as follows:

Arrow on seal ... counterclockwise

Distance from rear face of crankshaft to sleeve Dimension A ... 1.5 ± 0.5 mm (0.6 ± .02 in.)

Distance from edge of sleeve to seal Dimension B ... 6.1 ± 0.6 mm (.24 ± .02 in.)

NOTE: Same procedure and dimensions apply to a crankshaft with a rear gear group.

(10) See Connecting Rod And Main Bearing Journals.

Caterpillar Information System:

3408 & 3408B DIESEL TRUCK ENGINE Crankshaft (1W5010)
3408 & 3408B DIESEL TRUCK ENGINE Cylinder Liner Projection
3408 & 3408B DIESEL TRUCK ENGINE Cylinder Liners
3408 & 3408B DIESEL TRUCK ENGINE Cylinder Block
3408 & 3408B DIESEL TRUCK ENGINE Water Temperature Regulators
3408 & 3408B DIESEL TRUCK ENGINE V-Belt Tension Chart
3408 & 3408B DIESEL TRUCK ENGINE Belt Tightener
3408 & 3408B DIESEL TRUCK ENGINE Coolant Conditioner Base
3408 & 3408B DIESEL TRUCK ENGINE Water Pump
3408 & 3408B DIESEL TRUCK ENGINE 4N8734 Oil Pump (One Section Gear)
3408 & 3408B DIESEL TRUCK ENGINE 4N8735 Oil Pump (Two Section Gear)
3408 & 3408B DIESEL TRUCK ENGINE Oil Pan
3408 & 3408B DIESEL TRUCK ENGINE Connecting Rod And Main Bearing Journals
3408 & 3408B DIESEL TRUCK ENGINE Connecting Rods
3408 & 3408B DIESEL TRUCK ENGINE Pistons And Rings
3408 & 3408B DIESEL TRUCK ENGINE Flywheel Housing
3408 & 3408B DIESEL TRUCK ENGINE Flywheel Housing Bore
3408 & 3408B DIESEL TRUCK ENGINE Flywheel Housing Runout Face Runout (axial eccentricity) of the Flywheel Housing:
3408 & 3408B DIESEL TRUCK ENGINE Flywheel - For Use Without BrakeSaver 9N676 Flywheel Group
3408 & 3408B DIESEL TRUCK ENGINE Flywheel - For Use With BrakeSaver 9N678 Flywheel Group
3408 & 3408B DIESEL TRUCK ENGINE Flywheel Adapter Group (6N9829) (Not For Use With BrakeSaver)
3408 & 3408B DIESEL TRUCK ENGINE Flywheel Runout
3408 & 3408B DIESEL TRUCK ENGINE BrakeSaver (9N2125)
3408 & 3408B DIESEL TRUCK ENGINE Brakesaver Control Valve (9N29, 9N3686, 9N3687)
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