10 ► PD45 User Manual
PRE-OPERATION PROCEDURES
CHECK THE POWER SOURCE
1. Using a calibrated owmeter and pressure gauge,
check that the hydraulic power source develops a
ow of 7–9 GPM/26–34 LPM at 2000 psi/140 bar.
2. Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100–2250 psi/140
bar.
INSTALLING ADAPTERS
1. The post hammer is designed to drive No. 1 through
No. 4 sign post, 2-1/2 inch square and up to 2-5/8
inch diameter round post without requiring adapters.
If you are driving one of these types of post, orient
the post into the tightest t in the post driver foot.
2. If you are driving smaller square or round post,
insert the adapter to the post driver foot using two
½-hex head capscrews.
CONNECTING HOSES
1. Wipe all hose couplers with a clean, lint-free cloth
before making connections.
2. Connect the hoses from the hydraulic power source
to the tool ttings or quick disconnects. It is a good
practice to connect return hoses rst and disconnect
them last to minimize or avoid trapped pressure
within the tool.
3. If hose couplers are used, observe the arrow on
the coupler to ensure that the ow is in the proper
direction. The female coupler on the tool hose is the
inlet (pressure) coupler.
4. Move the hydraulic power source On/Off control
valve to the ON position to operate the tool.
Note: If uncoupled hoses are left in the sun, pressure
increase inside the hoses may make them difcult
to connect. When possible, connect the free ends of
the operating hoses together.
TOOL OPERATION
1. Observe all safety precautions.
2. Install the appropriate adapter as required.
3. Place the post driver foot rmly on the surface to be
driven.
4. Press the lever assembly on handle to start the post
driver.
Note: On Remote ON/OFF Valve Models Place the
post driver on/off control valve in The ON position
to start the post driver.
Note: Adequate down pressure is very important.
5. When the post is fully set in the ground, release the
lever assembly on handle.
COLD WEATHER OPERATION
If the post hammer is to be used during cold weather,
preheat the hydraulic uid at low engine speed.
When using the normally recommended uid, uid
temperature should be at or above 50°F/10°C (400
ssu/82 centistrokes) before use.
Damage to the hydraulic system or post driver can result
from use with uid that is too viscous or thick.
OPERATION
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