1998/11/23 Caterpillar


The Correct Procedure For Starting The Engine Provides Accurate Prestart Fluid Level Monitoring On Electronic Monitor {7490,1416}

Usage:


307B (4RW, 5CW, 6KZ, 7DZ),
308B SR (3YS),
311B (8GR, 8HR, 9MR, 2LS, 2MS),
312B (9GR, 9HR, 2NS, 3ES, 6SW, 9NW),
312B L (8JR, 3FS, 9FS, 2KW),
313B SR (9PR),
315B (5BJ, 1SW, 2DW),
315B L (3AW, 5SW),
317B L (9WW),
317B LN (6DZ),
320B (3MR, 5BR, 9KR, 1CS, 1XS, 4FS, 8ES, 4XW),
320B CR (8GZ),
320B L (4MR, 6CR, 7JR, 5CS, 9CS, 9WS, 6LW, 2WZ),
320B LL (6LS, 9JS),
320B N (4NR, 2AS),
320B S (5MS),
322B (3NR, 8MR),
322B L (5CR, 8NR, 1AS, 1YS, 2ES),
322B LN (1ZS),
325B (8GM, 8PR),
325B L (6DN, 7EN, 2JR, 8RR, 1GS, 4DS, 5BS),
325B LN (8FN),
330B (9HN, 8SR),
330B L (2RR, 3YR, 6DR, 8TR, 1JS, 4RS, 5LS),
330B LN (5LR),
345B (6XS, 2NW, 6MW, 8KW),
345B L (4SS, 5WS, 7KS, 9GS, 2SW, 4SW, 8RW, 9CW) Excavators

When the engine switch is turned to the ON position, the key must be maintained in the ON position for at least two seconds "before starting the engine" in order to activate the prestart fluid level monitoring system. This action will let the monitoring system check the fluid levels of the engine oil, the coolant, and the hydraulic oil. If the fluids are below a specified level, only the respective indicator lights will be ON. The level check lights will remain ON until the engine key is turned off.

If the engine key is not maintained in the ON position for more than two seconds and the engine is started immediately, the system does not check the fluid levels. In this case, the fluid level indicator lights will flash a few times before turning OFF.

The service technician should be aware of these conditions:

1. The prestart fluid level monitoring system does not monitor levels after the engine is started. Therefore the system is not intended to detect leaks.

2. The prestart fluid level monitoring system only works at initial startup. In order to activate the system for a restart, there must be at least five minutes between engine stop and restart. This applies specifically to the engine oil level check. While the engine is running, oil is pumped out of the crankcase and into the engine. After the engine is stopped, it takes several minutes for the oil to drain out of the engine and back into the crankcase. If an engine is restarted before time is allowed for the oil to drain back to the crankcase, the low engine level warning would be in error. It is recommended to allow at least five minutes between stopping and restarting the engine if a fluid level check is desired.

3. The system monitors the Engine Oil Pressure continuously while the engine is running. Any engine oil pressure warnings should be taken seriously and action taken as specified in the machines Operation and Maintenance Manual.

Please review the Engine Starting subsection of the Operating Section of your machine's Operation and Maintenance Manual and provide the above instructions for all manuals.

Caterpillar Information System:

1998/11/23 Identification Of Fuel Injection Tube Assemblies {1252}
1998/11/16 Revised Special Instruction, REHS0126-02, "Caterpillar Electronic Controls Service Code Information Description List", Available{0374,1901,1927,1930,1948,3168,4348,4802,4808,4810,4812,5511,5701,7490,7494,7601,7602,7610}
1998/11/16 Compensator And Socket Head Bolts For 3408E And 3412E Hydraulically Actuated Electronically Controlled Unit Injector (HEUI) Hydraulic Pump Now Available{1714}
1998/11/16 New Cab Platform Mounts Improve Cab Support And Flexibility{7253}
1998/11/16 Vacuum Breaker Moved From Horizontal To Angular Position On Hydraulic Tank{5056,5076}
1998/11/16 Special Instructions Are Now Available For Installing Two-Way And Four-Way Pilot Valves{5050,5059,5491}
1998/11/16 A Special Instruction Is now Available For Reinforcing Stick Assemblies{6500,6502}
1998/11/16 Special Instruction, REHS0347, "Instructions For Changing The Operating Language Of The DASA Computer" Available{0374,7600}
1998/11/09 Stanadyne Fuel Injection Pumps Now Equipped With Tamper Resistant Fittings {1251}
1998/11/09 Improved VIMS 100-3055 And 118-7226 Temperature Sensor Groups Now Used {7601,1408}
1998/11/09 Differences In Swivels Are Identified To Determine Correct Seal Kit Use {5060}
1998/11/09 Water Pump Gasket For Emissions Engines Not Clearly Identified In Parts Manual {1361}
1998/11/23 New Indicator Assembly In The Air Cleaner Group {1051,7452}
1998/11/23 New Seal Kits Prevent Hydraulic Cylinder Oil Leaks {5456,5457,5458}
1998/11/23 New Check Valve Used For Refueling Pump {1295}
1998/11/23 Be Sure Electronic Controllers Are Grounded At Machine Service Inspections {1408,1901,5702}
1998/11/23 The Solenoid Valve Group Used For Low Flow Attachment Has Improved Performance {5051,5479}
1998/11/23 New Radio Requires Preventive Maintenance To Eliminate Battery Drain {7338}
1998/11/23 Larger Value Backup Resistors Are Used In Electronic Wiring Group To Limit PRV Solenoids For Main Pump And Swing Pump {1437}
1998/11/23 Use FT2617 Bracket Assembly To Support Pumps When Removing Engine {1003}
1998/11/23 Change In Location And Size Of Crankshaft Counterweight Sequence Number {1231,1202}
1998/11/23 Use 155-1536 Valve Recession Tool Kit To Determine Valve Wear {1103}
1998/11/23 Use 155-8795 Crankshaft Gauge To Determine Distortion {1202}
1998/11/23 Use 153-8538 Refrigerant Solvent For Air Conditioner Refrigerant Flushing Units {0708}
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