Owner's Manual

Compress the barrel locking plunger spring (2990) by pushing the barrel locking
plunger (2989) and withdraw the drift.
Ease the pressure off the barrel locking plunger allowing the plunger to rise against
the spring pressure. The barrel locking plunger, together with the barrel locking
plunger spring can now be withdrawn from the barrel housing.
When reassembling the lock mechanism it is advisable to hold the barrel housing
in a vice, using soft clamps or cloth to protect its finish.
Assemble the barrel locking plunger pin approx. 1/8´´ (3 mm) into its hole on one
side of the barrel housing - the pin is a drive fit.
Refit the barrel locking plunger spring and barrel locking plunger to the barrel
housing. Compress the barrel locking plunger against the spring pressure until its
slot straddles the barrel locking plunger pin hole.
Push the 1/8´´ (3 mm) diameter drift, now used as a slave peg, through the open
end of the barrel locking plunger pin hole to retain the barrel locking plunger
spring and barrel locking plunger in the barrel assembly.
following paragraphs which cover the remaining components and sub-assemblies.
Drive the barrel locking plunger pin through until it lies centrally within its hole.
This operation will push the slave peg out.
Re-assemble the loading lever to the barrel housing, then refit the barrel assembly
to the body tube, in the reverse order.
Piston and Seal Assembly.
The piston and seal assembly can only be removed when the mainspring,
sear/trigger mechanism and loading lever have dismantled from the body tube.
Insert a small screwdriver through the loading lever slot in the body tube,
then carefully push or tap the piston towards the end of the tube taking care not to
touch or damage the piston seal (3144). When sufficient piston skirt has emerged,
grasp it firmly and pull it right out.
Inspect the piston seal for wear and damage - do not dismantle it from the
piston unless renewal is necessary. To remove the old seal, unclip it of the piston
location using a screwdriver blade as a lever, alternatively slice through its section
with a sharp safety razor blade, penknife or Stanley knife.
Before fitting a new piston seal, first clean, then lubricate the location
recess of the piston. Spring the new piston seal over the piston location and push it
against the shoulder of the piston, the seal will then automatically into its recess.
If necessary, the piston seal may be immersed in boiling water until it becomes
sufficiently pliable to clip over the piston (wipe the seal dry before fitting).
Check the seal is located evenly around the piston (fig. 10).