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HD-12 Springs.
NOTE: On an HD-12 Post Driver Spring
replacement
can
be
done
without
removing the Cylinder.
1.
Remove the 1/2” bolt and lock washer from
bottom of both springs.
2.
Then remove the 1/2” bolt and lock washer
from top of both springs.
3.
Remove both Springs through the bottom of
the Driving Ram.
4.
Reassemble new springs by reversing these
steps.
5.
Once installed and Driver is reassembled,
run Driving Ram up and down 10 to 15 times
without impact to season your Springs. Do
this EACH time you start a new day.
Guide Block/Roller
Replacement
NOTE: Follow the disassembly instructions
for the Post Driver until the Driving Ram is
removed from the Driver.
1.
Remove Guide Blocks/Rollers and Shims
from pins inside the Drive Ram I-Beam.
IMPORTANT: Please take care to note the
number and thickness of the shims, and
the location of each shim pack removed.
This information is needed for correct
Drive Ram reassembly.
2.
Install new Guide Blocks/Rollers with the
Shims (the number and thickness noted
above) at each pin location.
NOTE
: Radius corners (rounded edges) on
Guide Blocks/Rollers must be positioned into
the channels to match the radius on the inside
of the Main Carriage Channel F rame.
Post Driver Reassembly
Reverse the Post Driver Disassembly
instruction.
1.
Lubricate the Guide Blocks with clean oil
to reduce friction. Get assistance to slide
Main Carriage Channel over Guide Blocks
from the top of the Drive Ram.
Main Carriage Channel assembly onto Guide Blocks and
Driving Ram (shown above as transparent).
2.
The Main Carriage Channel should slide
back and forth freely.
3.
With the Drive Ram Assembly horizontal,
check the up and down, and side to side
movement of the Main Carriage Channel in
the Drive R am I-Beam. Movement in either
direction should not be more than 1/4".
NOTE: If movement is more than 1/4" then
the Guide Blocks/Rollers will need to be
shimmed to reduce this play under 1/4".
4.
Install Drive Cylinder in Drive Ram Assembly
from the top (upper end).
NOTE
: Hydraulic Drive Ram Cylinder must be
inserted in Main Carriage Channel before
Springs are inserted. Position the Cylinder laying
loose inside the Main Carriage Channel.
5.
Install Springs from the bottom of the Post
Driver between Drive Ram I-beam and Main
Carriage Channel, and slide into position.
6.
If removed, install two Rubber Bumpers on
Road Lock Bracket. Install the Road Lock
Bracket on Main Carriage Channel with bolts
and nuts removed during
Post Driver
Disassembly.
Leave nuts slightly loose.
7.
Slide Main Carriage Channel up (forward)
and install Lower Spring Bracket and Drive
Cylinder Assembly onto Road Lock Bracket
Bolts. Thread two new self-locking nuts onto
t h e bolts. Install nuts just enough to fully
engage threads.
8.
For HD-12 attach the springs to the lower
and upper spring brackets.
a.
Install lower bolts, lock washers, and