Lafayette 3616 Engine BLW4100 - Caterpillar

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.
Specifications
Table 1
Quick Coupler Pressure Reducing Valve
Fusion Coupler 10000 500 kPa (1450 73 psi)
ISO (Wide) Coupler 24500 500 kPa (3553 73 psi) Introduction
The following test procedure will verify whether the pressure setting for the quick coupler pressure reducing valve is within the specified limit.Required Tools
Illustration 1 g02571852
Tooling (A) 198-4240 Digital Pressure Indicator Gp
Table 2
Required Tools
Tool Item Qty Part No Description
A 198-4240 Digital Pressure Indicator Gp
A1 1 198-4234 Digital Indicator
A2 1 198-4239 Pressure Sensor Gp
(0 to 41,368 kPa (0 to 6,000 psi))
A3 1 198-4236 Adapter Cable As Machine Preparation
Move the machine to a smooth, horizontal location that is away from operating machines and away from personnel.
Place the transmission direction in the NEUTRAL position.
Engage the parking brake. Place wheel blocks in front of the wheels and behind the wheels.
Lower the bucket or the work tool to the ground.
Stop the engine.
Illustration 2 g02703117
Install the steering frame lock.
Relieve the pressure in the hydraulic system. Reference: For more information about relieving the hydraulic pressure, refer to the Service Manual module Testing and Adjusting, "System Pressure - Release" for the machine that is being serviced.Reference: For more information about preparing the machine for Testing and Adjusting, refer to the Service Manual module Testing and Adjusting, "Machine Preparation for Testing and Adjusting" for the machine that is being serviced.Test Procedure
Permit only one operator on the machine. Keep all other personnel away from the machine or in sight of the operator.
Relieve the pressure in the hydraulic system. Reference: For more information about relieving the hydraulic pressure, refer to the Service Manual module Testing and Adjusting, "System Pressure - Release" for the machine that is being serviced.
Illustration 3 g02833196
Gain access to the quick coupler valve group (1) located at the upper left side of the articulated hitch. Install tooling (A) on test port (2).
Start the engine and warm the hydraulic oil to a normal operating temperature of approximately 49 to 65°C (120 to 150°F).
Run the engine at high idle.
Operate the quick coupler.
Record the maximum pressure obtained on tooling (A) for the "EXTEND" mode of quick coupler operation. Note: Test port (2) is only for the "EXTEND" pressure.
Reduce the engine speed to low idle.
Turn the engine key switch to the OFF position.
Release the hydraulic pressure. Refer to the Service Manual module Testing and Adjusting, "System Pressure - Release".
If the pressure reading is correct, proceed to step 11. Refer to Table 1 for the pressure setting appropriate to the coupler installed. If the pressure reading is not correct, adjust the quick coupler pressure reducing valve. In order