Preventive Maintenance; Preventive Maintenance Intervals - ProGear Hendrickson HN FR Series Service Manual

SECTION 6

Preventive Maintenance

17730-285
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • parts@eprogear.com
Hendrickson recommends that preventive maintenance be performed on a regular basis to
help ensure all components function to their highest efficiency. Proper preventive maintenance
programs can also help control repair costs and eliminate downtime. All new equipment should
undergo an initial pre-service inspection, and be inspected at the following intervals.
HENDRICKSON RECOMMENDED

PREVENTIVE MAINTENANCE INTERVALS

■ PRE-DELIVERY INSPECTION
1. Visually inspect suspension for proper assembly.
2. Check all fasteners for proper torque with special attention to the equalizing beam end
connections.
3. Set auxiliary spring shims to required specifications, the number of shims is dependent on
the following criteria:
Vehicle empty weight
■
■ Vehicle application
Roll stability versus ride requirements
■
4. Verify the lateral alignment of axles are within the vehicle manufacturer's tolerances (con-
sult the applicable vehicle manufacturer's instructions).
■ INSPECTION AT ONE (1) MONTH
1. Visually inspect suspension components, check for:
■ Proper suspension function
Signs of unusual movement, loose or missing components
■
■ Signs of abrasive or adverse contact with other components
■ Damaged, bent or cracked parts
2. Check all fasteners for proper torque with special attention to the equalizing beam end
connections.
■
PREVENTIVE MAINTENANCE
1. Every three months inspect auxiliary springs and bolster springs.
2. Every six months inspect equalizing beam end connections and Torque rods.
3. Every twelve months:
a. Visually inspect suspension for proper assembly
b. Check all fasteners for proper torque with special attention to the equalizing beam end
connections.
c. Verify the lateral alignment of axles are within the vehicle manufacturer's tolerances
(consult the applicable vehicle manufacturer's instructions)
d. Visually inspect suspension components. Check for all of the following and replace
components as necessary:
■ Proper suspension function
■ Signs of unusual movement, loose or missing components
Signs of abrasive or adverse contact with other components
■
■ Damaged, bent or cracked parts
11
HN ® FR Series
Preventive Maintenance