PDF Operation, Service & Parts Manual Ditch Witch Pierce Airrow II Series - 950 KB
This all-in-one manual is the ultimate resource for the Ditch Witch Pierce Airrow II Series.
It combines operation instructions, service and repair procedures, and a complete parts catalog into a single document.
Whether you need to run the equipment safely, perform complex repairs, or order a replacement part, this guide has you covered.
It's an indispensable tool for maximizing the lifespan and performance of your Pierce Airrow.
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Pierce Airrow II Series
Operation,
Service & Parts
Manual
CMW® Issue 1.2
053- 1129
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Contents - 10 Pierce Airrow II Series Operator’s Manual
Support 117
the warranty policy for this machine, and procedures for obtaining warranty
consideration and training
Service Record 121
a record of major service performed on the machine
CMW
--- Page 4 ---
Controls - 20 Pierce Airrow II Series Operator’s Manual
Oiler
Item Description Notes
2. Air supply valve To close air supply and stop
tool, move valve
perpendicular to edge of oiler
cover to OFF.
To open air supply and turn
tool on, move valve parallel to
edge of oiler cover to ON.
3. Sight glass Used to monitor the amount NOTICE: Discharge air from oiler
of oil remaining in the oiler. before opening fill plug. For
instructions on how to discharge air
Stop unit and fill oiler when from the oiler, see “Adjust Oil Flow” on
level drops below halfway page 66.
point on glass.
CMW
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Prepare - 30 Pierce Airrow II Series Operator’s Manual
Excavate Pits
Excavate Pits
Crushing weight could cause death or serious injury. Use proper
procedures and equipment or stay away.
Fall possible. Slips or trips may result in injury.
Moving traffic - hazardous situation. Death or serious injury could result.
Avoid moving vehicles, wear high visibility clothing, post appropriate warning signs.
NOTICE: Read, understand, and follow U.S. Department of Labor regulations on confined spaces,
excavating, and trenching.
Entry Pit
Dig an entry pit long enough to house launching tool
and piercing tool.
Pit must be wide enough for operator to maneuver
around tool. A width of at least 48” (1.2 m) is
recommended.
Pit must also be deep enough to launch tool at
appropriate depth. See “Determine Bore Depth” on
page 27.
CMW
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Pierce Hole - 40 Pierce Airrow II Series Manual
Connect Hoses
Oiler Hose
IMPORTANT: Monitor the progression of the tool through the bore by marking the air hose in equal
increments. For additional accuracy, measure length of bore. Measure the same distance from front of
tool along hose. Mark distance of bore on hose.
1. Check air hose coupling. Make sure all
gaskets are securely seated.
2. If the hose is new, pour 2 oz (60 ml) of
Pierce Airrow oil into hose at oiler end to
coat lining.
3. Connect air hose to oiler at QDC (1).
4. Slowly move air supply valve (2) to ON.
NOTICE: Secure hose end firmly.
Loose hose can whip and cause
injury or become contaminated by
dirt.
5. After flushing debris, move air supply
valve to OFF.
6. Check connections again and tighten if
necessary.
7. Connect air hose to tool whip hose.
CMW
--- Page 7 ---
Pierce Hole - 50 Pierce Airrow II Series Manual
Push Pipe
Air Pressure Method
1. Remove pipe pusher cone and other equipment
from both ends of pipe.
2. Remove spoil from inside the first 12-18” (300-500
mm) of last pipe (2).
NOTICE: If the compressor does not have a
discharge valve, install one inline away from the
pit.
3. Install blowout sealing plug (1) into end of pipe and
tighten by turning large adjustment nut clockwise
until plug fits snugly.
IMPORTANT: Any plug used for spoil removal
should have at least an ANSI 150-lb rating.
4. When plug is sealed, attach compressor air hose
and pressurize pipe. Do not exceed 100 psi (7 bar).
5. Keep pipe pressurized for up to 30 minutes.
6. If spoil does not clear with air pressure, discharge air pressure from pipe and use water method.
Water Method
1. After air pressure has been discharged from pipe
(2), remove two-claw coupler and connect water
line to end of plug.
2. Fill empty section of pipe with water.
3. Close and disconnect water line.
4. Replace two-claw coupler on the blowout sealing
plug (1).
5. Connect air compressor hose to blowout sealing
plug (1) and open air valve to pressurized pipe.
NOTICE: Do not exceed 100 psi (7 bar).
Note: If these methods do not work, or if air leaks around spoil without clearing spoil from pipe,
discharge air from pipe and contact your Ditch Witch dealer for information on mechanical augers and
hydraulic pushers.
CMW
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Systems and Equipment - 60 Pierce Airrow II Series Operator’s Manual
Optional Tool Heads
Optional Tool Heads
Optional Tool Heads
Optional tool heads are available for threaded
models. Optional heads come in a variety of
styles for different soils or uses.
Select Head Type
Once you have determined the soil type, use the
following table to determine which head or
expander is most suitable for soil conditions and
job situations.
Head type Suitable for
tapered wet, spongy, or loose soil
(grooved) conditions with no
head anticipated obstructions
stepped head hard, dry, compacted soil
conditions
1. tapered (grooved)
non-reversible enlarging existing tool path 2. stepped
expander on a second pass
3. non-reversible expander
reversible enlarging existing tool path
expander as tool is removed from hole 4. reversible expander
CMW
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Complete the Job - 70 Pierce Airrow II Series Operator’s Manual
Tool Body and Hoses
When the job is complete, the tool should be given proper care in order to extend its life. Additionally, the
tool must be rebuilt yearly. For information on rebuild kits, see your Ditch Witch dealer.
Tool Body and Hoses
1. Remove tool from the exit pit or entry pit and remove tape and coupling clips.
2. Uncouple whip hose from air hose.
3. Carefully remove any dirt and oil residue from whip hose.
4. Pour a generous amount of Pierce Airrow oil into the whip hose.
5. Install dust caps or tape whip hose end.
6. Store tool in a dry area to prevent condensation inside tool.
Oiler
1. Carefully remove any dirt or residue from
oiler surfaces.
2. Cover QDC bodies (shown).
3. Store oiler on a flat area to prevent oil from
leaking.
CMW
--- Page 11 ---
Service - 80 Pierce Airrow II Series Operator’s Manual
Rebuild
Rebuild
Disassmble and inspect components yearly or when production drops. Replace components as needed.
Disassembly Overview
1. Remove tail assembly and striker.
2. Remove tapered tail adapter.
3. Remove whip hose and fittings.
4. Disassemble valve stem components.
5. Remove end cap components.
CMW
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Specifications - 90 Pierce Airrow II Series Operator’s Manual
PA310 U.S. METRIC
OD Diameter 3.1 in 79 mm
L Overall length
Standard 54.7 in 1.39 m
Threaded 57.9 in 1.47 m
Weight
Standard 75 lb 34 kg
Threaded 80 lb 36 kg
Operating pressure 110 psi 7.6 bar
Air consumption 40 cfm 1.2 m3/min
Percussion rate 440 bpm
Delivery hose inside diameter 0.75 in 19 mm
PA425 U.S. METRIC
OD Diameter 4.25 in 108 mm
L Overall length
Standard 66.7 in 1.69 m
Threaded 69.9 in 1.78 m
Weight
Standard 170 lb 77 kg
Threaded 177 lb 80 kg
Operating pressure 110 psi 7.6 bar
Air consumption 110 cfm 3.1 m3/min
Percussion rate 425 bpm
Delivery hose inside diameter 1 in 25.4 mm
Specifications are called out according to SAE recommended practices where indicated. Specifications are
general and subject to change without notice. If exact measurements are required, equipment should be
weighed and measured. Due to selected options, delivered equipment may not necessarily match that
shown.
CMW
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Model PA270 PVC Puller Assembly
Part No. AL571993
Item No. Part No. Qty. Description
1 AL571994 1 PVC Puller
2 inch
2 AL831732 4 Set Screw 3/8-16
X .75 Cone Point
5
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Model PA425 Pierce Airrow II Assembly
Item Part
No. Qty. No. Description
1 1 AL572129 Body/Anvil Assy.
2 1 AL572132 Striker
3 1 AL572134 Valve Sleeve
4 1 AL572135 Valve Bushing
5 1 AL572136 Snap Ring
6 1 AL572137 Valve Stem
7 1 AL572138 Valve Finger
8 1 AL572139 Valve Spring
9 1 AL572140 End Cap
10 1 AL572141 Valve Guide
11 1 AL572142 Shock Absorber
12 1 AL572143 Stem Adapter
13 1 AL572144 Whip Hose
14 1 AL831027 Q.D Coupler Socket
15 1 AL572145 Tail Adapter
16 1 AL102395 Q.D. Coupler Plug W/Loc
17 1 AL798056 Adapter
01 ID0190059