Mitsubishi S12U Operation & Maintenance Manual page 11

Selection of Oil Viscosity .......................................... 4-4
Handling Engine Oil ......................................... 4-5
Coolant ................................................4-6
Recommended Coolant ................................... 4-6
Long Life Coolant (LLC) ................................... 4-6
Recommended LLC ......................................... 4-7
Features and Performance of Recommended
LLC .................................................................. 4-7
Maintenance of LLC ......................................... 4-7
Replacement timing of LLC ...................................... 4-7
LLC concentration..................................................... 4-7
Importance of LLC............................................ 4-8
Characteristics of LLC Additive and Important
Notes................................................................ 4-8
Examples of Abnormalities Caused by LLC..... 4-8
Pitting on iron parts................................................... 4-8
Corrosion of aluminum parts..................................... 4-8
Pitting and clogging of radiator ................................. 4-8
Filters...................................................4-9
Electrical Parts.....................................4-9
Cautions in Operating Engine in Cold
Weather Season................................4-10
Fuel ................................................................ 4-10
Engine Oil....................................................... 4-10
Coolant........................................................... 4-10
Battery............................................................ 4-10
Maintenance After Cold Season .................... 4-10
Chapter 5
PERIODIC MAINTENANCE CHART
How to Use Periodic Maintenance
Chart....................................................5-1
Periodic Maintenance Chart............................. 5-1
Periodic maintenance chart for regular-use
engine ....................................................................... 5-1
Periodic maintenance chart for emergency
engine ....................................................................... 5-1
Periodic maintenance chart for general-purpose
engine ....................................................................... 5-1
General Definition of Regular-Use Engine,
Emergency Engine and General-Purpose
Engine .............................................................. 5-2
General definition of regular-use engine................... 5-2
General definition of emergency engine ....................5-2
General definition of general-purpose engine............5-2
Periodic Maintenance Chart for Engine in
Regular Use ........................................ 5-3
Periodic Maintenance Chart for
Emergency Engine.............................. 5-8
Periodic Maintenance Chart for General-
Purpose Power Supply Engine ......... 5-13
Chapter 6
PERIODIC INSPECTION AND
MAINTENANCE PROCEDURES
Fuel System ........................................ 6-1
Draining Water from Fuel Filters
(Wire-Element Type)..................................................6-1
Draining Water from Fuel Filters
(Center-Bolt Type) .....................................................6-1
Draining Water from Fuel Tank..................................6-2
Cleaning inside of Fuel Filters
(Wire-Element Type)..................................................6-2
Changing Fuel Filters (Center-Bolt Type)......... 6-3
Changing Fuel Filters (Cartridge Type) ............ 6-4
Changing Fuel Filters with Engine Stop.....................6-4
Changing Fuel Filters while Engine in
Operation...................................................................6-5
Inspection of Fuel Control Linkage Ball
Joints ................................................................ 6-6
Lubricating System ............................. 6-7
Changing Engine Oil, Oil Filters and Bypass Oil
Filter ................................................................. 6-7
Draining Engine Oil....................................................6-7
Changing Oil Filters (S12U).......................................6-7
Changing Oil Filters (Swithover Type)
(S12U) .............................................................. 6-8
Changing Oil Filters with Engine Stop .......................6-8
Changing Oil Filters While Engine in Operation ........6-8
Changing Oil Filters (Swithover Type)
(S16U) .............................................................. 6-9
Changing Oil Filters with Engine Stop .......................6-9
Changing Oil Filters While Engine in Operation ........6-9
Changing Bypass Oil Filter ......................................6-10
Pouring Engine Oil...................................................6-11
Inspection of Engine Oil Leakage After Replacing
Oil Filter .......................................................... 6-11
CONTENTS
CONTENTS-3