Section 4. Scheduled Maintenance
Model 4700 Maintenance Manual
Maintenance Guidelines
Maintenance Guidelines Following a regularly scheduled maintenance program: •
promotes maximum truck performance
•
prolongs truck life
•
reduces costly down time
•
avoids unnecessary repairs
Scheduled maintenance includes: •
lubrication
•
cleaning
•
inspection
•
service
Perform all of the scheduled checks and maintenance during the suggested intervals. The time intervals given in this guide are based on Pump Hours under normal operating conditions. When operating under Severe or Extreme conditions, perform these services more often as indicated in Table 4-1. Table 4-1.
Maintenance Frequency
Operating Conditions Light to Moderate Severe
Working Environment
Service Frequency
An eight hour day of basic material handling
180 days or 500 pump hours, whichever comes first
• Extended heavy duty operation
60 days or 250 hours, whichever comes first
• Freezer operation • Sudden temperature changes such as going from freezer to room temperature Extreme
• All UL Type EE rated lift trucks • Dusty or sandy conditions such as in cement plants, lumber or flour mills, coal dust or stone-crushing areas
30 days or 100 hours, whichever comes first
• High temperature areas such as in steel mills, foundries, or enclosed (Type EE) applications • Corrosive chemical atmosphere, such as:
• fish, meat, or poultry processing plants, tanneries, or any other similar applications
• chlorine or salt-sea air environments • Adverse high humidity, wet, damp, or moist conditions
4-2
Publication 1160093, Issued: 20 May 2013
