Engine Procedures; Cold Weather Operation - SANY SY75 Operation And Maintenance Manual

Engine Procedures

ENGINE PROCEDURES

WARNING!
Never attempt to start the machine if it has been locked out by maintenance personnel. If in
doubt, contact the maintenance supervisor. Failure to observe and follow this warning could
result in death or injury.
Check the work area to be sure all personnel and equipment are clear from your machine. Before starting the
machine, sound your horn to warn others you are about to start the machine.
Start-up and shut-down procedures for most diesel engines are generally the same. Therefore, use the following
procedures except where specific differences are noted. (Refer to the OEM engine manual for detailed procedures.)
WARNING!
Diesel engine exhaust can be harmful to your health or even fatal. Operate the engine only in a
well-ventilated area or vent the exhaust to the outside. Failure to observe and follow this
warning could result in death or injury.

Cold Weather Operation

The following recommendations are for operating SANY excavators in very low (i.e., sub-zero) temperatures.
NOTE: See "Key Switch" on page 3-12 for details on using the ignition key to preheat the engine for cold-
weather starting.
NOTE: Detailed cold weather starting and operating procedures are covered in the engine manual.
The correct grade of oil for the prevailing temperature must be used in the crankcase. Diesel fuel must have a pour
point of 10° F (6° C) less than the lowest expected temperature.
This machine must have appropriate hydraulic oil, lubricants and other auxiliary items required for operation in
sub-zero temperatures. Individual machine functions should be operated to ensure they are sufficiently warmed
prior to performing work.
Operation of machine at full-rated capacities in temperatures between 0° F (-18° C) and -40° F (-40° C) or lower
should be accomplished only by competent operators who possess the skill, experience and dexterity to ensure
smooth operation. Shock-loading must be avoided.
Cold weather operation requires additional cautions:
• Do not touch metal surfaces that could cause you to be frozen to them.
• Keep the machine clear of all ice and snow.
• Allow sufficient time for the hydraulic oil to warm up.
• Park the machine in an area where it cannot freeze to the ground.
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Operation and Maintenance Manual — 0220
SY75C Excavator OMM
SANY