BOOM AR 3598693 - Caterpillar

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 work tools have been lowered to the ground, and the 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 of the machine or release of oil under pressure can cause injury to persons on or near the machine.To prevent possible injury, perform the procedure that follows before testing and adjusting the brake system.
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.
Specification
Table 1
Fan Speed for Standard Machines
Minimum RPM Required Maximum RPM Required Results
550 50 rpm 1450 50 rpm Introduction
This test procedure is intended to determine the maximum and the minimum hydraulic fan speed.This procedure includes the following tests and the following adjustment procedures:
Test for Minimum Fan Speed
Test for Maximum Fan SpeedRequired Tools
Illustration 1 g02140435
Table 2
Required Tools
Tool Item Part Number Description Qty
D 9U-7400 Multitach Tool Gp 1
D1 9U-7401 Multitach Tool Gp 1
D2 9U-5140 Photo Pickup 1
1U-6605 Reflective Tape 1 Test Preparation
Before you begin this procedure, refer to Testing and Adjusting, "Machine Preparation".
Move the machine to a smooth, horizontal location. Move the machine away from other operating machines and away from personnel. Place the transmission direction control switch in the NEUTRAL position.
Engage the parking brake. Lower the work tools to the ground. Stop the engine and put chocks in front of the wheels and behind the wheels.
Inspect the hoses to the fan drive for damage. Inspect all of the connectors for the fan drive for damage. Inspect all of the components for the fan drive for damage.
Illustration 2 g03587239Note: Each fan comes with a factory installed piece of reflective tape on one of the fan blades. Apply a new piece of tape if a new piece of tape is required.
Swing the rear fan open (1) to gain access to the fan if a new piece of tape is required.
Attach reflective tape to the rear side of fan.
Swing the fan assembly (1) closed and make sure that the fan assembly is latched.
Install the 9U-7400 Multitach Tool Gp Tool Group (D) on the grill assembly (1). Test Procedure for Minimum Fan Speed
Start the engine and run the engine at high idle. Use the throttle lock in order to maintain high idle. Note: To ensure the proper operation