TORQUE CONTROL GROUP 7N1377 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 6V-7073 Cylinder Liner Puller 1
B 8T-3035 Hydraulic Line 1
8T-0820 Hydraulic Pressure Gauge 1
9U-6600 Hand Hydraulic Pump (1) 1
350-7768 Electric Hydraulic Pump Gp (115 V) (1) 1
350-7769 Electric Hydraulic Pump Gp (230 V) (1) 1
(1) Any of the pumps may be used for this procedure.Start By:
Remove the piston and connecting rod. Refer to Disassembly and Assembly, "Piston and Connecting Rods - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.
Put a protective cover over the crankshaft to prevent dirt and debris from falling on the crankshaft.
Illustration 1 g00575535
Install Tooling (A) into the cylinder liner. Put the legs into position to engage with the bottom of the cylinder liner.
Attach the hydraulic hoses from the pump group to the hydraulic cylinder on Tooling (A).
Use Tooling (A) and Tooling (B) to pull the cylinder liner from the cylinder block. Pull the cylinder liner until the O-ring seals are free in the bore of the cylinder block.
Illustration 2 g00575536
Attach a suitable lifting device to Tooling (A). Lift cylinder liner (1) out of the cylinder block. The combined weight of cylinder liner (1) and Tooling (A) is approximately 127 kg (280 lb).
Illustration 3 g00575537
Remove O-ring seal (2) and O-ring seals (3) from the cylinder liner.
Position the cylinder liner on suitable cribbing. Remove Tooling (A).