3306 VEHICULAR ENGINE FOR D5B, D6D & D7G TRACTORS – Connecting Rod

(1) Bore in bearing for piston pin (new):

5S6360 Rod … 1.5017 ± .0003 in.(38.143 ± 0.008 mm)

5S2793 Rod … 1.7012 ± .0003 in.(43.210 ± 0.008 mm)

8N1721 Rod (tapered) … 1.7012 ± .0003 in.(43.210 ± 0.008 mm)

Maximum permissible clearance between bearing and piston pin (worn) … .003 in.(0.08 mm)

(2) Bore in connecting rod for bearing … 3.2500 ± .0005 in.(82.550 ± 0.013 mm)

(3) Distance between center of piston pin and center of crankshaft bearing (new) … 9.595 ± .001 in.(243.71 ± 0.03 mm)

(4) Diameter of piston pin (new):

9H4016 Pin … 1.5003 ± .0002 in.(38.108 ± 0.005 mm)

7N9804 Pin … 1.5003 ± .0002 in.(38.108 ± 0.005 mm)

8M6487 Pin … 1.6998 ± .0002 in.(43.175 ± 0.005 mm)

7N9805 Pin … 1.6998 ± .0002 in.(43.175 ± 0.005 mm)

(5) Clearance between connecting rod bearing and crankshaft bearing surface (journal) … .0030 to .0066 in.(0.076 to 0.168 mm)

Maximum permissible clearance between bearing and crankshaft (worn) … .010 in.(0.25 mm)

(6) Torque on nut for connecting rod:

a. Put engine oil on threads and nut seat.

b. Tighten both nuts to … 30 ± 3 lb. ft.(40 ± 4 N·m)

c. Mark each nut and end of bolt.

d. Again tighten both nuts (from mark) … 90°

Install the connecting rod in the piston with the slot for the bearing tab on the same side as the V mark on the piston.

Make reference to Special Instructions, Form No. GMG02394 and SMHS7366 for information about checking and reconditioning connecting rods.

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