Terex TM Series User manual

Tech-Tip 134 1 Released: 5/18/2020
Tech Tips
Service Call:
TM Wear Pad Adjustment
Tools Required:
9/16” wrench or socket
1/4” allen wrench
Tape measure
Blue loctite
Grease lithium base EP#2
Model(s):
TM Models with End Mount Platforms

Tech-Tip 134 2 Released: 5/18/2020
Tech Tips
Tech Tip Safety Rules
Danger
Failure to obey the instructions and safety rules in the appropriate
Operator's Manual and Service Manual for your machine will result in
death or serious injury. Many of the hazards identified in the operator’s
manual are also safety hazards when maintenance and repair
procedures are performed.
Do Not Perform Maintenance Unless:
•You are trained and qualified to perform maintenance on this
machine.
•You read, understand and obey:
omanufacturer’s instructions and safety rules
oemployer’s safety rules and worksite regulations
oapplicable governmental regulations
•You have the appropriate tools, lifting equipment and a suitable
workshop.
The information contained in this tech tip is a supplement to the service
manual. Consult the appropriate service manual of your machine for
safety rules and hazards.

Tech-Tip 134 3 Released: 5/18/2020
Tech Tips
Step 1
Position the unit with the booms in the stored
position and the engine OFF, check the rollers
on the upper and lower booms for proper
installation and adjustment per the unit specific
maintenance manual and Tech-tip #121.
Step 2
Starting at the 4 wear pads at the end of the
outer boom, center the inner boom sidewalls
over the rollers, measure the gap from the inner
boom and the outside of the outer boom.

Tech-Tip 134 4 Released: 5/18/2020
Tech Tips
Step 3
Add or remove shims under the wear pads and
pad weldments on each side of the inner boom.
To ensure that the inner boom sidewalls travel
over the center of the rollers. The total gap
cannot be greater than 1/16” between wear pads
and inner boom.
Note: The rollers must be positioned under the
side plates of the boom to allow the side plates
to support the weight. Failure to do so can cause
damage to the bottom plate of the inner boom.

Tech-Tip 134 5 Released: 5/18/2020
Tech Tips
Step 4
When the wear pad is shimmed to the desired
dimension, apply blue loctite to the threads of
the 5/16” countersunk fastener and torque to a
standard torque value of 20 ft-lbs.
Step 5
Before installing the wear pad assemblies, note
the orientation of the beveled edge of the wear
pad. This bevel allows clearance for the welds
on the lower extension boom.
On the lower boom:
•The top 4 wear pads are installed with the
bevel up.
•The 4 bottom wear pads are installed with
the bevel down.

Tech-Tip 134 6 Released: 5/18/2020
Tech Tips
The wear pads on the upper boom provide
clearance for the upper extension boom
bulkhead access covers.
On the upper boom:
•At the end of the upper elbow weldment the
top 2 wear pads are installed with the bevel
down and the bottom 2 wear pads have the
bevel up
•At the elbow side, the top 2 wear pads are
installed with the bevel up and the 2 bottom
wear pads have the bevel down
Step 6
Install the wear pad assembly with grease
applied to the wear pad. Use blue loctite on the
threads of the fasteners and torque to a
standard torque of 23 ft-lbs.

Tech-Tip 134 7 Released: 5/18/2020
Tech Tips
Step 7
Set the unit up for operation with the outriggers
properly deployed. Operate the upper and lower
boom extend and retract functions, checking for
excessive wear pad and roller drag. Re-adjust
the wear pads if necessary so the boom is
centered on the rollers.
If you have any questions, please contact Terex
Utilities Technical Support at 1-844-Terex4U (1-
844-837-3948) or [e-mail].