KIT-GAS SPRING 3582573 - Caterpillar

Table 1
Required Tools    
Part Number     Description     Qty    
8T-0859     Pressure Gauge     1    
6V-4144     Coupler     1    
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.
Sudden movement or accidental starting of the machine can cause personal injury or death to persons on or near the machine.To prevent personal injury or death, perform the following:Park the machine on a smooth, level surface.Lower the work tool to the ground and engage the parking brake.Stop the engine and remove the key.Block the wheels and install the steering frame lock.
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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Park the machine on a smooth, level surface.
Lower the blade to the ground.
Engage the parking brake.
Illustration 1 g00888772
Steering Frame Lock
Install the steering frame lock into the LOCKED position.
Relieve the system pressure in the hydraulic system.ReferenceFor more information about relieving the system pressure, refer to the Service Manual module Testing and Adjusting, "System Pressure - Release" for the machine that is being serviced.
Illustration 2 g01260837
Location of pressure tap for implement pump pressure
Release the pressure in the hydraulic system. Connect a pressure gauge to the pressure tap for the implement pump on the diagnostic lines group.
Start the engine. Move the blade several times. This will ensure that the hydraulic oil is at normal operating temperature.
Move the lift control lever to the full RAISE position. Raise the blade until the lift cylinder is fully retracted.
Run the engine at high idle. Hold the lift control lever in the full RAISE position.Note: Do not hold relief pressure for more than five seconds at a time.
Observe the pressure on the pressure gauge. The pressure should be 15500 350 kPa (2250 50 psi) at approximately 84 L/min (22 US gpm).
Lower the blade to the ground. Turn the engine start switch to the OFF position. If the pressure reading is correct, release the pressure in the hydraulic system and remove the pressure gauge. If the pressure reading is not correct, proceed to Step 12.
Illustration 3 g01260843
Typical Main Control Valve (1) Main relief valve. (2) Locking nut. (3) Adjuster.
Main relief valve (1) is located on the main control valve. The main control valve is