COMMON AR-AFTM 5315993 - Caterpillar

Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
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.
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.
Performance Tests (Water Spray System)
Tests for the water spray system can diagnose poor performance. The tests also help isolate the source of water leakage inside the system.Probable Causes of Problems in the Water Spray System
ProblemNo water spray is on the tires when the switch on the console is in the CONTINUOUS SPRAY position.Probable Cause
No water is in the tank.
The pump head contains contamination or a leak.
The motor is faulty.
The check valve is plugged.
The pump suction line is loose.
The fuse for the system has failed.
The water in the system is frozen.
The water filter is plugged.
The water lines are plugged.
The electrical wiring contains a fault.
The control switch has failed.ProblemThe water spray from the nozzle is not consistent.Probable Cause
The orifice of the nozzle is plugged.ProblemThe water spray from the nozzle is not centered on the tires.Probable Cause
The nozzles on the water spray bar are out of adjustment.