SAE J1177:2019 pdf free

SAE J1177:2019 pdf free.Hydraulic Excavator Operator Controls
SAE J1177 has been upgraded from a Recommended Practice to a Standard due to its long standing position and acceptance in the earthmoving industry. It has been reformatted to the latest SAE criteria, references have been updated throughout the document and Figure 1 has been redrawn to include the use of ISO symbols. Figure 3 has been redrawn to show the more common and industry accepted foot pedal configuration for travel controls although the mode of operation remains unchanged. In paragraph 5.3 the direction of movement of the functions has been changed from“as specified by the manufacturer” to “idlers to the front and sprockets to the rear for crawler mounted machines and primary steering axle to the front for wheel mounted machines” which is the industry accepted definition.
The function of all controls (except as noted in Section 4.1.1) shall be clearly identified on permanently affixed labels or diagrams (Ref. SAE J1362- Graphical Symbols for Operator Controls and Displays on Off- Road Self Propelled Work Machines, and ISO 6405- Earth-moving machinery- Symbols for operator controls and other displays). Primary and secondary control movement shall additionally be identified such that the operator can determine equipment movement without trial and error or reference to a manual.
The functions of controls obviously self- defined by standard practice such as steering wheel, turn signal, horn or by mounting location such as heater switch or door handle when located on the unit are exempt. Movement of foot operated controls need not be identified if they operate with a push motion.
All primary working equipment and machine travel controls (except steering wheel, travel direction,and clutch controls) shall return to their neutral position automatically when released and power for movement shall disengage.
The locations and directions of movement of the Primary Machine Travel Controls for Wheel Mounted Machines and Crawler Mounted Machines are ilustrated and described in Figures 2 and 3 respectively. The direction of movement for functions that are controlled (forward, reverse, etc.) are relative to the machine in its normal travel mode; idlers to the front and sprockets to the rear for crawler mounted machines and primary steering axle to the front for wheel mounted machines.SAE J1177 pdf free download.