Dover HEIL DuraPack Python - Lift Arm Preventive Maintenance Guide

Issued July 2024
Lift Arm
Copyright 2024, The Heil Co.
Printed in the U.S.A.
Lift Arm
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LIFT ARM PREVENTIVE MAINTENANCE CHART
Maintenance performed on a regular schedule is preventive maintenance. Normal maintenance intervals are based on an 8-
hour day and average operating conditions. Severe use or adverse conditions make it necessary to do this maintenance more
frequently.
Watch the Preventive Arm Lift Maintenance video on the Heil Service Shack (https://www.heil.com/heil-service-
shack).
REF NO.
ACTIVITY
INTERVAL
SERVICE/CHECK
1
Grease Lift
(20 hrs)
See the Python Lift Lubrication Guide or the
lubrication decal on the lift arm.
2
Check Pin Retaining Bolts –
Tighten
Weekly
(40 hrs)
Check for broken bolts. This may indicate bearing or pin
damage. Replace the bolt and the bearing and pin retained
by the bolt. Use anti-seize compound on any pins or
bearings that are replaced.
3
Hydraulic Plumbing
Weekly
(40 hrs)
Check for damage, worn, or leaking hoses, tubes or
fittings. Replace as necessary. NOTE: Do not replace
steel tubes with hoses.
4
Cycle Times (900 maximum
RPM while operating lift)
Weekly
(40 hrs)
Check lift operation. Normal engine RPMs should not
exceed 900. The lift operates at approximately 7 – 8
second cycle time. Cycle times includes grab, lift, lower
and release.
5
Check Mounts
Weekly
(40 hrs)
Make sure chassis rail is undamaged.
Make sure chassis bolts are present and tight.
Check brackets for cracks.
Make sure lift bolts are present and secure.
6
Check Lift Mount Base
Bolts
Weekly
(40 hrs)
Visually inspect mounting bolts for security and movement.
Check the nuts and bolts to make sure the weld is secure.
See Check Lift and Torque Mount Base Bolts for
bolt replacement instructions.
7
Lift Stress or Weld Cracks
Weekly
(40 hrs)
Check lift for any structural cracks or cracks in the areas
of welds. Cracks must be ground out and repaired. If
cracking continues replace the affected parts. See Lift
and Weld Cracks Decision Tree in this section.
8
Grabber Assembly with Belt
Weekly
(40 hrs)
Inspect belt condition for wear, cuts or damage. Replace if
present.
9
Hoses
Weekly
(40 hrs)
Check for tears, wear or holes and replace as necessary.
10
Fiber Guards
Weekly
(40 hrs)
Check for tears or holes and replace as necessary.
11
Shaft Retainer Bolts
Monthly
(200 hrs)
Make sure both pins are present and tight. If one pin
fails, replace both pins.
Make sure the collar key is present. If one fails.
12
Grabber Cylinder Pivot Bolt
Monthly
(200 hrs)
Check for tightness.
13
Hydraulic Relief Valves
Twice
Yearly
(1000 hrs)
Check main relief and port reliefs for proper settings. For
more information see Lift Control Valve Pressure
Adjustments in this section.
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