LINK AS-TRACK 3P1088 - Caterpillar

Remove Pistons
start by:a) remove spacer platesb) remove piston cooling jets1. If necessary, remove the cover from the front right side of the flywheel housing and use tool (A) to turn the engine flywheel until all four of bolts (1) can be removed. 2. Remove bolts (1) and bearing cap (2) from the connecting rod. 3. Push the piston up until the piston rings are clear of the cylinder liner. Remove pistons (3) and the connecting rods. Put identification on each piston as to its location for correct installation and alignment. Keep each bearing cap with its connecting rod. 4. Use tool (B) and remove the rings that hold piston pin (4) in position. Remove pin (4) and remove piston (3) from connecting rod (5).5. Remove the bearings from the bearing cap and connecting rod (5). 6. Use tool (C) to remove piston rings (6) from piston (3).Install Pistons
1. Clean the ring grooves in the piston. 2. Use tool (A) to install the oil ring on piston (1). Make sure the oil ring spring ends are 180° apart from the ring end gap.3. Use tool (A) to install the two compression rings on piston (1). Make sure the sides with the "UP" marks are toward the top of the piston and all three ring end gaps are 120° apart after installation. 4. Put clean engine oil on pin (3), the pin bearing in rod (2) and the pin bore in piston (1). Put rod (2) in position in piston (1) and install pin (3). Use tool (B) to install rings (4) on each side of pin (3).5. Install the upper half of the connecting rod bearing in the connecting rod and put clean engine oil on it. Make sure the tab on the back of the bearing fits in the groove of the rod. 6. Put clean engine oil on the piston rings and cylinder liner bore. Use tool (D) to put the piston rings under compression and install the pistons and connecting rods in the cylinder liners.
Make sure the piston is installed with the side of the connecting rod that has the chamfer in the rod bearing bore next to the crankshaft thrust surface. The side with the square shoulder for the connecting rod bearing bore must be next to the other connecting rod on the same crankshaft journal.
7. Install the lower half of the connecting rod bearing in cap (5) and put clean engine oil on it. Make sure the tab on the back of the bearing fits in the groove of the cap.8. See INSTALL CONNECTING ROD BEARINGS for the procedure to install the connecting rod caps and to check the bearing clearance.9. Check the side clearance between two connecting rods on the same crankshaft journal. The clearance must be 0.85 0.23 mm (.335 .0091 in.) for the 12 cylinder and 0.900 .282 mm (.0354 .0111 in) for the 8 cylinder.end by:a) install cooling jetsb) install spacer plates