07.2019
The Model RA27 troubleshooting/service manual has been developed to assist ITW
CCNA field sales and distributor field/service personnel in servicing the RA27 powder
actuated tool. This manual is designed to reduce the amount of tool down time when a
problem occurs by giving field and service personnel troubleshooting techniques and the
proper corrective measures to take. In many cases, servicing can be done right at the
job site in a very short time. This manual can also be used as an educational tool for
teaching perspective operators and service personnel on the inner workings of the tool
and proper service techniques. Using this manual wisely will reduce tool down time,
promote customer confidence and allow more quality time for selling.
This manual is broken into 5 chapters with 2 sections on tool disassembly / assembly:
1. Introduction
2. Troubleshooting
3. Tool Disassembly
a. Front End
b. Firing Pin/Backend
4. Tool Schematic
5. Glossary
When troubleshooting, or servicing a tool it is important to understand the function of
each component. Knowing the function of each component will quickly lead to the
troubled area. It is also important to be able to accurately describe a condition using the
correct terminology.
When troubleshooting, or servicing a tool it is always important to function test the tool
first.
Always check the tool first to make sure that it does not contain a live load.
Test the tool several times by depressing the muzzle bushing fully on a hard surface
such as a workbench or concrete floor and actuate the tool. You should hear an audible
click as the firing pin releases. Let up on the tool and check to be sure the barrel has
opened to the full open position. This function test may lead you to the proper area of
the tool needing service.
When attempting any repair on a Ramset tool, be certain you have read and understand
the operator’s manual, you have the correct tools to perform the repair, and have/wear
the correct personal protective equipment for the circumstance.
Many powder loads contain lead. Lead residue within the tool is a possibility. Proper
personal protective equipment (PPE) must be worn.
There may be cases where this manual may not supply the information needed, or the
user may need additional information. For further information, the ITW Service and
Parts Center or Ramset Technical Service can be contacted.
Further information on obtaining parts can be found at
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