Seal Replacement; Spring Replacement - Shaver HD-8-S Operator's & Parts Manual

Seal Replacement

NOTE: Follow the disassembly instructions
for the Post Driver until the Cylinder is out
of Driving Ram.
1. Unscrew the Cylinder Cap and remove the
Cap and Piston Rod.
IMPORTANT:
DURING REMOVAL OF PISTON ROD TO
PREVENT SCORING IT, TO AVOID OIL
LEAKAGE.
Driver Cylinder disassembly.
2. Remove the Piston Guide Nut and Piston
Guide (SM-02610) from the lower end of
Piston Rod. Slide the Cylinder Cap down
and off the Piston Rod. DO NOT slide the
Cylinder Cap up and off the Piston Rod as
the upper threads will score the inside of the
Cylinder Cap.
3. Use a screwdriver or pick to remove the old
Seal (see below).
4. Clean the seal grove in Cylinder Cap.
5. Squeeze the new Seal together and place
one end of it into the cavity of the Cap. Force
the Seal down and it will snap into place.
This is easier to do if the Seal has been
softened by placing it in hot (120°F) water.
6. Oil the new Seal and slide the cylinder Cap
onto the Piston Rod starting at the bottom.
DO NOT slide the Cylinder Cap onto the
Piston Rod from the top as the upper
threads will score the inside of the Cylinder
Cap and damage the new Seal.
7. Replace the Piston Guide and Piston Guide
Nut.
PLEASE TAKE
8. Replace the Cylinder Cap & Piston Rod into
the Cylinder Tube. Use a paste type thread
sealer, DO NOTE USE A TAPE SEALER as
this will void the Cylinders warranty.
9. Replace the Cylinder into the Driving Ram
and reassemble reversing the disassembly
steps.
CARE
10. Adjust the locknuts to re-center the Cylinder.
NOTE: Follow the disassembly instructions
for the Post Driver until the Spring
Assembly is out of Driving Ram.
HD-8 and HD-10 Springs.
1. Bend the Spring Clip back to their original
shape as shown below. Insert a screwdriver
through the loop and twist the Spring Clip out.
2. Force the screwdriver through the first coil of
the new Spring and loop the Spring Clip into
the Spring. Insert the screwdriver into the
Clip, twist it into the replacement Spring at
least two (2) coils down. Bend the ends of the
Clips back to secure the replacement.
3. Reassemble new springs by reversing these
steps.
4. 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.
37

Spring Replacement

Springs are UNDER TENSION when
fastened. Move the Main Carriage
Channel down to where the top of it
is slightly past the top of the beam
of the Driving Ram.