PLATE-TREAD 4340995 - Caterpillar

Replace element any time the water separator becomes contaminated enough that water level cannot be seen through the transparent cover.1. Close the fuel supply valve, if equipped. 2. Remove all dirt from the separator and surrounding area.3. Open vent valve (1) and drain valve (2). Allow fuel to drain. Close valves (1) and (2). 4. To remove the water separator element, depress the extended tab with the heel of the hand. Then lift the slotted tab from the locking slot, at the top of the base, with the fingers. Remove the clamp. 5. Remove element (3) from base (4) and discard it.6. Clean the three sealing surfaces (5) on base (4) before installing a new element.7. Align outlet hole (6) and roll pin (7) and push new element (3) into position on the base. 8. The clamp must be installed with the hand and finger tabs in the UP position.9. Engage lower tab of clamp in slot at bottom of separator base. While depressing clamp, with heel of hand, push upper tab into locking slot at top of base.10. Open the fuel supply valve, if equipped.11. Prime the fuel system. See Priming the System in the Fuel Filters topic in PM Level 1 section.12. Start the engine and check for fuel leaks.Thermostats and Seals
Replace
Replacing your thermostats prior to failure is a recommeded preventive maintenance practice because it reduces the chances for unscheduled downtime. Failure to replace the thermostats on a regularly scheduled basis could cause severe engine damage and added cost because of damage to other engine components.If the thermostats fail in the closed position, it will cause excessive overheating. Excessive overheating could result in cylinder head cracking or piston seizure problems.If the thermostats fail in the open position, it will cause the engine operating temperature to be too low during partial load operation. Low engine operating temperatures during partial loads could cause an excessive carbon build-up inside the cylinder. This excessive carbon build-up could result in accelerated piston ring and cylinder wear.Depending on load, a thermostat that fails in a partially opened position will cause either an overheating or an over cooling condition.Caterpillar recommends the replacement of the thermostats on a regularly scheduled basis to be the most cost effective way to operate the engine.Since Caterpillar engines incorporate a shunt design cooling system, it is mandatory to always operate the engine with thermostats installed. All tools shown or mentioned in the following Disassembly and Assembly procedure are available from your Caterpillar dealer.Remove Thermostats
1. Loosen the coolant filler cap slowly to relieve any pressure and remove the cap.2. Drain the coolant from the cooling system to a level below the thermostat housing. 3. Disconnect hose assemblies (1) from the thermostat housing (3). 4. Remove bolts (2) and thermostat housing assembly (3) from the engine block.5. Remove thermostats from engine block.6. Replace thermostats, gaskets and seals. The thermostats can be reused if they are tested and meet the test specifications below and are not damaged or have excessive