Ingersoll-Rand 341 Setup guide

16600421
Edition 2
May 2014
Save These Instructions
Air Percussive Tamper
341 and 441 Series
Maintenance Information

2 16600421_ed2
Product Safety Information
WARNING
Failure to observe the following warnings, and to avoid these potentially hazardous situations, could result in death or serious
injury.
Read and understand this and all other supplied manuals before installing, operating, repairing, maintaining, changing accessories
on, or working near this product.
Always wear eye protection when operating or performing maintenance on this tool. The grade of protection required should be
assessed for each use and may include impact-resistant glasses with side shields, goggles, or a full face shield over those glasses.
Always turn o the air supply, bleed the air pressure and disconnect the air supply hose when not in use, before installing, removing
or adjusting any accessory on this tool, or before performing any maintenance on this tool or any accessory.
Note: When reading the instructions, refer to exploded diagrams in parts Information Manuals when applicable (see under Related Documentation
for form numbers).
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NOTICE
After the rst 24 hours of operation of a new Tamper, or one that has reassembled, retighten the Head Block (20) on the
Barrel (33). Even though this connection is drawn extremely tight during assembly, the parts will usually seat during the rst few hours
of operation resulting in an ever so slight loosening of the valve parts and reduced performance. To tighten the connection, grip the
ats on the Barrel in a rugged vise and draw the Head Block to approximately 500 ft-lb. (678 Nm) torque.
Lubrication
Each time the Model 341 and 441 Tampers are disassembled for
maintenance, repair or replacement of parts, lubricate the tool as
follows:
Work approximately 1.5 cc of Ingersoll Rand No. 28 Grease into
the grease chamber by injecting through the Grease Fitting (35).
1.
Remove the Oil Chamber Plug (26) and ll the oil chamber with
9 cc of Ingersoll Rand No. 10 Oil.
2.
Disassembly
General Instructions
Do not disassemble the tool any further than necessary to replace
or repair damaged parts.
Whenever grasping a tool or part in a vise, always use leather-
covered or copper-covered vise jaws to protect the surface of
the part and help prevent distortion. This is particularly true of
threaded members and housings.
Do not remove any part which is a press t in or on a subassembly
unless the removal of that part is necessary for repairs or
replacement.
Do not disassemble the tool unless you have a complete set of
new gaskets and O-rings for replacement.
Disassembly of the Throttle Assembly
Clamp the Head Block (20) of the Percussion Tool in leather-
covered or copper-covered vise jaws.
Loosen the Handle Locknut (18) and unscrew the Handle (17)
from the Head Block.
Clamp the Handle in leather-covered or copper-covered vise jaws.
Unscrew the Throttle Handle Body (1) from the Handle. Remove
the Screen Retaining Spring (15) and the Air Strainer Screen (16).
Clamp the Throttle Handle Body in leather-covered or copper-
covered vise jaws Throttle Lever (6) upward.
Drive out the Throttle Lever Pin/Throttle Lever Stop Pin (7) and
remove the Throttle Lever.
Unscrew the Street Elbow (5). Unscrew the Reducing Bushing (4).
Rotate the Throttle Handle Body in the vise to gain access to the
Throttle Valve Cap (13).
Unscrew the Throttle Valve Cap and remove the Throttle Valve
Spring (14).
Carefully drive the Throttle Valve (8) out of the Throttle Handle
Body through the throttle valve cap bore.
Unscrew the Throttle Valve Face Retaining Screw (11) from the
Throttle Valve. Remove the Throttle Valve Face Cap (10), the
Throttle Valve Face (9), and the Retaining Screw Lock Washer (12).
1.
2.
3.
4.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
NOTICE
In the following step, replacement of the Throttle Valve Bushing
will require the use of a special, two-step reamer (Part No. 43505)
to size the Bushing after it is pressed into the Throttle Handle
Body. The reamer is a special order item from Ingersoll Rand.
12. If required, press the Throttle Valve Bushing (2) from the Throttle
Handle Body.
Disassembly of the Head Block
Clamp the Barrel (33) in rugged vise jaws with the Head
Block (20) upward.
Using a large wrench, unscrew the Head Block from the Barrel.
Remove the Exhaust Deector Assembly (46), Deector Retainer
Assembly (48), Exhaust Silencer (50) and Deector Screen (51).
Remove the Valve Box Cap (27), Valve (28), Valve Box Cap
Dowel (30), Valve Box (29), and the Valve Box Dowels (31).
Remove the Lubricator Valve Cap (25) and the Lubricator Valve
Spring (24).
Carefully push the Lubricator Valve (22) from the Head Block
through the lubricator valve cap bore.
If required, remove the Lubricator Valve Face (23) from the
Lubricator Valve and the Lubricator Valve Seal (21) from the Head
Block.
Disassembly of the Barrel
Clamp the Piston (43) in leather-covered or copper-covered vise
jaws with the Malleable Butt (45) downward.
Using a large hammer, tap the Butt o the Piston.
Rotate the Barrel in the vise, Butt end upward.
Loosen the Locking Nut (42A) and remove the Guide Retainer (41).
Gently remove the Piston from the Barrel.
Remove the Rod Front Seal (40), Piston Rod Guide (38), the Rod
Rear Seal (37), and the Seal Support (36).
If required, remove the Seal Support Gasket (34) from the groove
in the Barrel.
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
5.
6.
7.

16600421_ed2 3
Assembly
General Instructions
Whenever grasping a tool or part in a vise, always use leather-
covered or copper-covered vise jaws. Take extra care with
threaded parts and housings.
1.
Always clean every part and wipe every part with a thin lm of oil
before installation.
Apply a lm of O-ring lubricant to all O-rings before nal
assembly.
2.
3.
Assembly of the Barrel
If required, reinstall the Seal Support Gasket (34) into the groove
in the Barrel (33).
Place the Seal Support (36) on the Piston (43). Place the Rod Rear
Seal (37) on the Seal Support.
Follow the Rear Seal with the Piston Rod Guide (38). Place the Rod
Front Seal (40) onto the Piston and into the Rod Guide.
Place the Piston and the seal/support assembly into the Barrel.
Secure the Piston with the Guide Retainer (41).
Work the Piston back and forth in the Barrel and tighten the Guide
Retainer until there is a slight drag on the rod.
Pump grease into the Grease Fitting (35) until it starts to ooze out
between the piston rod and the Rod Front Seal.
Final adjustment cannot be made until the tool is fully assembled
and ready for the air supply to be attached to the tool. When the
tool is assembled to that point, proceed as follows:
NOTICE
Burned seal lips and early failure of the Seals will result if the
following procedure is not followed when installing new Seals.
Start the Tamper and slowly tighten the Guide Retainer until
the Piston speed decreases.
Continue running the Tamper until the speed returns to
normal.
Tighten the Guide Retainer until the speed decreases again.
Continue running the Tamper until the speed returns to
normal again.
Repeat this procedure until the Guide Retainer is drawn as
tightly as possible.
Lock the Guide Retainer in position by tightening the Locking
Nut (42A).
Assembly of the Head Block
Clamp the Barrel (33) in leather-covered or copper-covered vise
jaws with the Butt (45) end down.
Install the Deector Screen (51), Exhaust Silencer (50), Deector
Retainer Assembly (48) and Exhaust Deector Assembly (46).
Carefully place the Valve Box Dowels (31) and the Valve Box (29)
on the Barrel.
Place the Valve Box Cap Dowels (30) into the Valve Box. Place the
Valve (28) and the Valve Box Cap (27) onto the Valve Box.
Secure the valve assembly with the Head Block (20). Tighten the
Head Block to 500 ft-lb (678 Nm).
If required, replace the Lubricator Valve Seal (21) in the groove in
the lubricator valve bore.
If required, replace the Lubricator Valve Face (23) onto the
Lubricator Valve (22).
Carefully push the Lubricator Valve into the Head Block.
Place the Lubricator Valve Spring onto the Valve and secure the
assembly with the Lubricator Valve Cap (25).
Assembly of the Throttle Handle
Clamp the Throttle Handle Body (1) in leather-covered or copper-
covered vise jaws with the throttle lever boss upward.
Press in the Throttle Lever Pin/Throttle Lever Stop Pin (7) to secure
the Throttle Lever (6).
Rotate the Throttle Handle Body in the vise.
If required, press the Throttle Valve Bushing (2) into the Throttle
Handle Body and ream the Bushing with the two-step reamer
(Part No. 43505).
Place the Retaining Screw Lock Washer (12) on the Throttle
Valve (8).
Reinstall the Throttle Valve Face (9) and Throttle Valve Face
1.
2.
3.
4.
5.
6.
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8.
a.
b.
c.
d.
e.
f.
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Cap (10) onto the Throttle Valve.
Secure the Throttle Valve Face Cap with the Throttle Valve Face
Retaining Screw (11).
Carefully push the Throttle Valve into the Throttle Handle Body.
Place the Throttle Valve Spring (14), small end rst, onto the
Throttle Valve.
Secure the throttle assembly with the Throttle Valve Cap (13).
Screw the Reducing Bushing (4) into the Throttle Handle Body
and the Street Elbow (5) into the Reducing Bushing.
Rotate the Throttle Handle Body in the vise, Elbow downward.
Place the Screen Retainer Spring (15) and the Air Strainer
Screen (16), convex up, into the Throttle Handle Body.
Thread the Handle (17) into the Throttle Handle Body.
Run the Handle Locknut (18) to the end of the threads on the
Handle.
Screw the Handle into the Barrel (20) and tighten the Handle
Locknut against the Handle.
Place the Malleable Butt (45) onto the Piston (43) and rap the Butt
with a large hammer to seat it.
Oversize Pistons
Ø 1.6235”
Ø 1.6275”
Ø 1.6315”
Ø 1.6355”
Ø 1.6395”
OVERSIZE ETCHED HERE
.004” OVERSIZE
.008” OVERSIZE
.012” OVERSIZE
.016” OVERSIZE
STANDARD
FURNISHED ON ALL
ORDERS WHERE NO
OVERSIZE IS SPECIFIED
(Dwg. TPD1699)
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.

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Troubleshooting Guide
Trouble Probable Cause Solution
Sluggish operation Dirt or oil gum accumulation on internal
parts
Pour about 3 cc of a clean, suitable, cleaning
solution into the air inlet and operate for 30
seconds. After ushing, pour about 3 cc of
oil into the air inlet and operate the tool for
5 seconds to coat the internal parts with oil.
Loss of power Worn Valve Replace the Valve.
Loss of eciency Worn Piston and/or accessory Replace Piston and or accessory.
Related Documentation
For additional information refer to:
Product Safety Information Manual 04581450.
Product Information Manual 03528676.
Parts Information Manual 16600413.
Manuals can be downloaded from ingersollrandproducts.com

Notes:

Notes:

Notes:

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