FRAME AS-UNDERCARRIAGE 3324988 - Caterpillar

Removal Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A FT-2674 Vacuum Cap 1
B 308-3470 Stand As 1 Start By:
Remove the bucket.
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 attachments have been lowered, 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.
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.
Illustration 2 g02838799
Position quick coupler (1) onto Tooling (B) and suitable cribbing.
Release the hydraulic system pressure.
Illustration 3 g02722636
Remove the breather from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull vacuum on the hydraulic system.
Illustration 4 g02849046
Disconnect all hose assemblies (2) that are connected to coupler cylinder (3).
Remove pins (4) and remove coupler cylinder (3).
Illustration 5 g02849061
Disconnect hose assemblies (7) that are connected to coupler cylinder (6).
Remove pins (5) and remove coupler cylinder (6). Installation Procedure
Install coupler cylinders (6) and (3) in the reverse order of removal. Disassembly and Assembly Procedure
Table 3
Required Tools
Tool Part Number Part Description Qty
A - Loctite 243 -
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.
Illustration 6 g02849074 (1) Tighten the check valve to a torque of 44 3 N m (32 2 lb ft). (2) Tighten plugs to a torque of 16 2 N m (142 18 lb in). (3) Tighten the head to a torque of 270 70 N m (200 52 lb ft). (4) Apply Tooling (A) to the locknut. Tighten the locknut to a torque of 250 15 N m (185 11 lb ft). (5) Lubricate the seals with the lubricant that is being sealed.