b.Lift boom and maneuver into position in the frame of turret and install pin (23) and nut (22).c.Install bushings (19 and 20) and grease fittings (21) in main cylinder (16).d.Position the base of cylinder (16) in turret and install pin (18) and nut (17). Uncap and connect hydraulic lines tocylinder.eLift rod end of cylinder (16) and place in position on main boom (1 3). Install pin (15) and nut (14). Removesling from boom.f.Install bars (31), roller (30), rod (29), washers (28) and nuts (27). Install indicator (26) and screws (25).g.Refer to paragraph 5-7. 3 and install the extension boom.h.Attach wear pad (9)to trunnion (5) with screws (8). Attach wear pads (7) to retainers (2) with screws (6). Be surethat screw heads are recessed below the surface of wear pads.i.Install retainers (2) and screws (1). Install trunnion (5), pin (4) and nut (3).j.Put the extension cylinder (12) in place and install pin (11) and cotter pins (10). Connect rod end to extensionboom with pin (18, figure 5-7) and cotter pins (17).k.Uncap and connect hydraulic lines to extension cylinder.5-7.5 MainandExtensionCylinders. (Figure 5-11)5-7.5.1 Disassembly. Before proceeding with disassembly, thoroughly wash the exterior of the cylinder case.a.Remove tube (1), elbow (2), screws (3) and holding valve (4).CAUTIONDo not clamp the cylinder in a vise. It may damage the cylinder.b.Place the cylinder on a flat surface near a vise. Slip a pin through the pin boss on the end of tube (6) and clampthe pin in a vise.c.Using a spanner wrench, unscrew the end gland (5), or retaining nut (6), from tube (7).WARNINGDo not use compressed air to assist in withdrawing the piston/rodassembly. The use of compressed air may result in propelling thepiston/rod assembly out of the cylinder and may cause injury ordeath.5-25
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