COUPLING A- 8T3717 - Caterpillar

start by:a) remove pistons1. Remove the coolant from the cylinder block.2. Put covers on the journals of the crankshaft to protect them from dirt or water. 3. Put tool (A) in position in the cylinder liner. 4. Use tool (A) to loosen the cylinder liners from the cylinder block. 5. Remove cylinder liners (1) from the cylinder block. 6. Remove filler band (3) and O-ring seals (2) from the cylinder liners.7. Check the cylinder liners for wear or damage. "Use again" maximum bore diameter (when measured near upper end of the wear surface of the cylinder liner) is 5.405 in. (132.29 mm). See GUIDELINE FOR REUSABLE PARTS: PISTONS AND CYLINDER LINERS, Form No. SEBF8001.Install Cylinder Liners
1. Clean the cylinder liners and the liner bores in the cylinder block. 2. Install cylinder liners (1) in the cylinder block without the filler bands or O-ring seals.3. Check the cylinder liner projection as follows: a) Install the 3/4"-16 NF bolts and 2F126 washers of tooling (A) on the spacer plate around each cylinder liner as shown. Tighten the bolts evenly in four steps.Step 1 Tighten to a torque of 10 lb.ft. (14 N m).Step 2 Tighten to a torque of 25 lb.ft. (35 N m).Step 3 Tighten to a torque of 50 lb.ft. (70 N m).Step 4 Tighten to a torque of 70 lb.ft. (95 N m). b) Put the adapter plate and one plate of tooling (A) on top of the liner and install the remainder of tooling (A). Be sure the crossbar is in position at the center of the liner. Tighten the bolts that hold tooling (A) evenly in four steps:Step 1 Tighten to a torque of 5 lb.ft. (7 N m).Step 2 Tighten to a torque of 15 lb.ft. (20 N m).Step 3 Tighten to a torque of 25 lb.ft. (35 N m).Step 4 Tighten to a torque of 50 lb.ft. (70 N m).c) Check to be sure the distance from the bottom edge of the bar to the top of the cylinder block is the same on both sides of the cylinder liner.d) Check the cylinder liner projection with tooling (B) at four locations around the cylinder liner.e) Liner projection must be .005 .003 in. (0.13 0.08 mm). Measurements on the same liner must not be different by more than .002 in. (0.05 mm). Average measurements between liners next to each other must not be different by more than .002 in. (0.05 mm). If the liner is turned in the bore it can make a difference in the liner projection. 4. If the liner projection is not .005 .003 in. (0.13 0.08 mm), check the thickness of the following parts: spacer plate, spacer plate gasket, and cylinder liner flange. The thickness of the spacer plate must be .338 .001 in. (8.59 0.03 mm). The thickness of the spacer plate gasket must be .008 .001 in. (0.20 0.03 mm). The thickness (2) of the cylinder liner flange