RAIL-UPPER 5186301 - Caterpillar

Introduction
When the words "use again" are in the description, the specification given can be used to determine if a part can be used again. If the part is equal to or within the specification given, use the part again.When the word "permissible" is in the description, the specification given is the "maximum or minimum" tolerance permitted before adjustment, repair and/or new parts are needed.A comparison can be made between the measurements of a worn part and the specifications of a new part to find the amount of wear. A part that is worn can be safe to use if an estimate of the remainder of its service life is good. If a short service life is expected, replace the part.
Sudden movement of the machine can cause injury to persons on or near the machine. To prevent possible injury, do the procedure that follows before testing and adjusting the water spray system.
1. Move the machine to a smooth horizontal location. Move away from working machines and personnel.2. Permit only one operator on the machine. Keep all other personnel either away from the machine or in view of the operator.3. Activate the parking brake.4. Stop the engine.Visual Checks
A visual inspection of the water system and its components is the first step when a diagnosis of a problem is made. Then check the operation of the system.1. Check the water level in both of the water tanks.2. Check all water lines, hoses and connections for leaks and damage.Checks During Operation
The checks during operation can be used to find leakage in the system. They can also be used to find a valve, switch, time relay, pump or motor that is not operating correctly.Troubleshooting
Problem: No spray on front drum when console switch is in CONTINUOUS SPRAY position. Probable Cause:* No water in the rear tank.* Rear tank shut off valve closed.* System frozen.* Fault in electrical wiring.* Water spray switch failed.* Plugged front water filter.* Faulty front water pump and motor group. Problem: No spray on front drum when console switch is in INTERMITTENT SPRAY position. Probable Cause:* No water in the rear tank.* Rear tank shut off valve closed.* System frozen.* Fault in electrical wiring.* Water spray switch failed.* Plugged front water filter.* Faulty front water pump and motor group.* Intermittent timing relay failure. Problem: No spray on rear tires when console switch is in ON position. Probable Cause:* No water in the front tank.* Front tank shut off valve closed.* System frozen.* Fault in electrical wiring.* Water spray switch failed* Plugged rear water filter.* Faulty rear water pump and motor group. Problem: Nozzle spray pattern is not consistent. Probable Cause:* Nozzle strainer plugged.* Nozzle orifice plugged.* Plugged water filter.* Faulty pump.Spray Nozzle Adjustment
Front Spray Bar
(1) Nozzle. (2) Spraybar. (3) Clamp.Optimum water spray operation occurs when 100% drum coverage is achieved. There are two adjustments that can be made to improve drum and tire coverage.* Loosen the clamps (3) and rotate spray bar (2) as needed to achieve the best coverage.* Use