K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
seal groove in the block. It may help to use clean engine oil on the seal pieces. repeat this procedure for the other side.
Fig. 17 Installing Lower Rope Seal Piece
5.
To install a new rope seal to the main bearing cap, proceed as follows:
a. Apply adhesive part No. 1052621, or equivalent, to seal groove.
b. Position rope seal onto bearing cap.
c. Using rear oil seal installer tool No. J-33153 or equivalent, install seal as shown in Fig. 17.
d. After correctly positioning the seal, rotate rear oil seal installer tool No. J-33153 or equivalent, slightly and cut the seal ends flush with the
bearing cap surface.
e. Measure rear main bearing clearance, using Plastigage. The main bearing caps are to be tapped into place with a mallet before attaching
bolts are installed.
Fig. 18 Installing Two Piece Rear Crankshaft Seal
6.
To install a two piece type seal in place of the rope seal, proceed as follows:
a. Apply a light coat of clean engine oil to the seal lips where they contact the crankshaft.
b. Roll one seal half into the engine block seal groove until 1/2 of seal end is extending out of the block, Fig. 18.
c. Insert other seal half into the opposite side of the seal groove in the block.
d. The contact ends of the seal halves should now be at the four and ten o'clock positions, or at the eight and two o'clock positions. This is
necessary to align the rear main bearing cap and seal lips.
