GENERAL AR 3466210 - Caterpillar

Specifications
Illustration 1 g03657016
Table 1
Specification for 178-3713 Coupler Cylinder Gp
Item Qty Part Specification Description
A - - Bore of the cylinder is 50.8 mm (2.00 inch).
B 2 178-3893 Rod Diameter of the cylinder is 25.4 mm (1.00 inch).
C - - Stroke length is 80.5 mm (3.17 inch).
D - - Closed length pin to pin is 339.6 mm (13.37 inch). Removal Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 195-4609 Seal Pick 1 Start By:
Release the pressure in the hydraulic system.
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed.Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Keep all parts clean from contaminants.Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
Disconnect any attachment tools from the quick coupler.
Illustration 2 g03659591
Remove bolts (1) and cover (2).
Illustration 3 g03659607
Disconnect hose assemblies (3). Remove pins (4) and coupler cylinder (5).
Illustration 4 g03659619
Illustration 5 g03659660
Remove retainer (6) from coupler cylinder (7). Remove O-ring seals (8) and nut (9). Repeat for opposite side. Installation Procedure
Install coupler cylinder (7) in the reverse order of removal.
Tighten nut (9) to a torque of 68 7 N m (50 5 lb ft)
Install new O-ring seals (8). Lubricate O-ring seals (8) with the lubricant that is being sealed.