STI-2420 | STI-2418LP
Operating Manual
26
7.3 Maintenance
Only those repair works are described which occur within the context of maintenance or
which are required to replace wear parts. If you replace parts yourself for specific reasons,
the instructions in section 7.4 and work sequence have to be observed.
You should also stock all spare or wear parts that cannot be supplied quickly. As a rule,
production standstill periods are more expensive than the cost for the corresponding spare
part. Screws that have been removed must be replaced with those of the same quality
(strength, material) and design.
Prior to any repair work on the machine and its drives, secure the machine
against unintentional switching-on. Pull out the main plug in order to do this.
Store the plug near the machine to avoid accidents.
7.4
Regular Wear Parts
Regular wear parts consist of the Morflex Coupler.
To replace a worn or damaged Morflex Coupler perform the following:
1. Remove ½ inch-20 bolts from drive plate using a ½ inch impact wrench and ¾ inch
socket.
2. Use pry tool to remove assembly from drive plate.
3. Remove ½ inch-20 bolts from tool plate using a ½ inch impact wrench and ¾ inch
socket.
4. Use pry tool to remove coupler from tool plate.
5. Replace with new coupler.
6. Replace bolts through new coupler and into tool plate* tighten with impact wrench.
7. Place tool plate assembly onto drive plate with bolts* tighten with impact wrench.
* When replacing bolts, be sure to hand start bolts BEFORE using impact wrench to tighten
down. This minimizes the risk of stripping the threads by tightening an unseated bolt.
