VALVE AS-BRAKE 1140918 - Caterpillar

Remove Cylinder Liners
start by:a) remove pistonsb) remove spacer plates
Be careful not to damage the piston cooling tubes when tooling (A) is used.
1. Use tooling (A) and an impact wrench to loosen the cylinder liners from the cylinder block. 2. Remove cylinder liners (1) from the cylinder block. See GUIDELINE FOR REUSABLE PARTS, PISTON AND CYLINDER LINERS, Form No. SEBF8001.Install Cylinder Liners
The surfaces of the spacer plate, cylinder block and the spacer plate gasket must be clean and dry. Tooling (D) and a standard air tool with a 5/8"-11 NC arbor can be used to clean the spacer plate and cylinder block. Do not put liquid gasket or another material on the surfaces.
1. Put a new gasket and the O-ring seal in position on the engine block.2. Put spacer plate (1) in position and install the two bolts at the end of the spacer plate. Tighten the bolts to a torque of 35 5 lb.ft. (45 7 N m). 3. Make sure the liners and the cylinder block are clean. Put the liners in position in the cylinder block without the O-ring seals.4. Check the cylinder liner height (projection) as follows: To keep the bolts and washers so they are not moved as each liner is checked, install two bolts with washers on each side of each cylinder liner, along the complete length of the top plate.a) Use 3/4"-10 NC bolts (2), 3 in. long [part of tooling (A) with two 2F126 Washers on each bolt to hold the spacer plate to the cylinder block]. Tighten the bolts evenly, in four steps: 10 lb. ft. (14 N m), 25 lb. ft. (35 N m), 50 lb. ft. (70 N m) and then to 70 lb. ft. (95 N m).b) Install tooling (A) to hold the cylinder liner down. Tighten both bolts evenly, in four steps: 5 lb. ft. (7 N m), 15 lb. ft. (20 N m), 25 lb. ft. (35 N m) and then 50 lb. ft. (70 N m).c) Use tooling (B) to check liner height (projection) as close as possible to where the liner is held in position by tooling (A) at four different locations around the liner. The liner height (projection) must be within .0020 to .0076 in. (0.05 to 0.19 mm). The difference between the four measurements must not be more than .002 in. (0.051 mm). The difference between the average height (projection) of any two cylinder liners next to each other must not be more than .002 in. (0.051 mm). If liner height is different from point to point around the liner, make a rotation of the liner to a new position within the bore. If it is still not within specifications, move the liner to a different bore. 6. If the liner height is not .0020 to .0076 in. (0.05 to 0.19 mm), check the thickness of the following parts: cylinder liner flange (3), spacer plate (1) and spacer plate gasket. The thickness of the liner flange is .5260