MOUNTING GP-CARRIER ROLLER 1186345 - Caterpillar

Hydraulic oil pressure can remain in the hydraulic system on this machine after the engine and pump have been stopped. Serious injury can result if this pressure is not released before any service is done on the hydraulic system. In order to prevent possible injury, release the hydraulic system pressure before working on any fitting, hose, or hydraulic component.Lower all work tools to the ground before service is started. If the hydraulic system must be serviced, tested, or adjusted with the work tool in the raised position, the work tool and lift cylinders must be supported properly.Always move the machine to a location away from the travel of other machines. Be sure that other personnel are not near the machine when the engine is running and tests or adjustments are being made.
Specifications
Illustration 1 g06023268
Bank valve
(1) Main relief valve
(2) Relief valve for rod end of left angle cylinder and head end of right angle cylinder
(3) Blade lift relief valve
(4) Ripper relief valve
(5) Relief valve for rod end of right angle cylinder and head end of left angle cylinder
Table 1
Relief Valve (Line) Pressure
Date Equipment ID Code
Valve Tested Recommended Actual
Main Relief 26750 250 kPa (3880 36 psi)
Blade Angle 34750 250 kPa (5040 36 psi)
Blade Raise 26250 250 kPa (3807 36 psi)
Ripper Raise 34750 250 kPa (5040 36 psi)
Table 2
Torque Specifications
Item Torque
Locknut (7) 20 2 N m (177 18 lb in)
Relief Valve 70 7 N m (52 5 lb ft) Introduction
The main line relief valve and the line relief valves are on the bank valve. None of these relief valves are adjustable on the machine.The following procedure will determine if any of these relief valves are out of adjustment.Required Tools
Table 3
Required Tools
Tool Part Number Part Description Qty
B 288-6823 Manifold 1 Test Preparation - Relief Valve (Line)
Hot oil and components can cause personal injury.Do not allow hot oil or components to contact skin.
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.
Note: Cleanliness is an important factor. Before you begin the disassembly procedure, clean the exterior of the components. This will help to prevent dirt from entering the system. Precision components can be damaged by contaminants or by dirt.
Move the machine to a smooth, horizontal location that is away from operating machines and away from personnel.Note: Permit only one operator on the machine. Keep all other personnel away from the machine or in the sight of the operator.
Place the steering and transmission control lever in the NEUTRAL position.
Engage the parking brake.
Lower the attachments to the ground.
Stop the engine.
Turn the key to the ON