Maintenance - norbar PTM-72 Series Operator's Handbook Manual

To maintain optimum performance and safety, regular maintenance needs to be carried out. The only user
maintenance required on these tools is the replacement of drive squares and the silencer. Any other
maintenance or repairs should be carried out by Norbar or a Norbar approved agent and should form part of a
service. Service intervals will depend on the type of usage of the tools and the environment in which they are
being used.
AIR LUBRICATION:- ____________________________________________________________
Add Shell Tellus 15 or equivalent good quality hydraulic oil to the Lubro unit.
NOTE: The tools may be run without air lubrication to avoid the possibility of oil mist.
GEARBOX:- ___________________________________________________________________
Under normal operating conditions it is not necessary to re-grease the gearbox. The gearbox contains
Lubcon Turmogrease Li 802 EP or equivalent good quality grease.
SILENCER:-___________________________________________________________________
The silencer (#18591) must be changed every 12 months. This may be more frequent for high tool usage or
dirty environments.
TIP: Change silencer with tool upside
down, as shown, to ensure internal
parts (spring & valve) are kept in
place.
1. Remove M4 screw (A) (#25381.10) using a
2.5mm hexagon key.
2. Remove pin (B) (#26284) using a pin
punch.
3. Pull out air inlet tube (D) with base plate &
silencer.
4. Remove silencer (E) from air inlet tube.
5. Fit new silencer (#18591) over air inlet
tube.
6. Fit air inlet tube assembly (C, D & E) into
handle against spring resistance.
7. Fit pin (B) with a hammer.
8. Fit screw (A) hand tight. Do not over
tighten this screw as it is likely to break
the base plate moulding.(0.5N.m MAX)
TIP: When refitting air inlet tube
assembly into handle care should
be taken to ensure correct
alignment between air inlet tube &
spring. It may be easier to fit the
spring into air inlet tube first and
secure with a small amount of
grease.

MAINTENANCE

Figure 9
PAGE 12 OF 16
ISSUE 1
09 2005