26
D i s m a n t l i n g 0 7 5 3 2 - 0 2 2 0 0 M k I I
M a i n t e n a n c e
To dismantle the 07530-02200 MkII refer to pages 24-25.
TAIL JAW CYLINDER
•
Manually flip the Clip
54
up and remove the End Cap
45
.
•
Using an Allen Key*, remove one cap head Screw
51
ensuring that any trapped air in the tail jaw cylinder is exhausted. Remove
the second cap head Screw
51
.
•
Push forward Rear Plug
53
against Spring
20
and release quickly to allow Rear Plug
53
to fall away.
•
Extract air tail jaw components, comprising Tail Jaw Piston Assembly
21
, Spring
20
, Jaws
16
and Jaw Housing
15
.
•
Remove plug at rear of piston assembly using an Allen Key* and a bar through the large slot in the turret.
•
Clean out turret using a 4.7mm (
3
/
16
”) drill and replace plug using a non-hardening sealing compound, e.g. Loctite Multi-gasket
574*.
•
Remove piston seal ‘O’ Ring
17
.
•
Using an Allen Key*, remove all five handle moulding securing Screws
41
,
46
and Nuts
40
from the tool handle.
•
Grip Barrel
31
in a vice using soft jaws* to avoid damage.
•
Using a box spanner*, unscrew Barrel Plug
14
, preventing Barrel
31
turning by using an open ended spanner*.
•
Disconnect Air Tail Jaw Concertina Tube
19
from Switch Block
35
and pull Tail Jaw Cylinder
12
from tool.
•
Remove ‘O’ Ring
10
, Rubbing Strip
22
and Barrel Return Spring
13
.
•
Free length of Spring
20
should be 38.1mm (1.5”). Replace if necessary.
•
Coat the tail jaws with Moly Lithium grease before assembling.
•
Assemble in reverse order of dismantling.
HYDRAULIC PISTON
•
Remove Tail Jaw Cylinder
12
as described earlier.
•
Grip Body
25
in vice using soft jaws* to avoid damage, undo Stroke Limiter
23
.
•
Grip Barrel
31
in soft jaw vice, pull Body
25
from Barrel
31
(a small quantity of hydraulic oil will be ejected from inside body).
•
Remove Piston
24
carefully so as not to damage body bore.
•
Remove Seal
9
.
•
Seal
1
is difficult to remove without damaging, but can remain in place during cleaning (provided it is not affected by cleaning
process). If however, Seal
1
requires renewing proceed as follows:
•
Using spatula*, prise out Seal
1
from Body
25
, taking care not to damage body cavity and bores. The removed Seal
1
MUST be
discarded.
•
To replace Seal
1
, disconnect Hydraulic Hose Assembly
63
and all the associated air pipes. Unscrew Self Closing Coupler
6
,
remove Suspension Mounting Plate
4
, unscrew the Adapter Top Hose
2
and fit a spare Bleed Plug Assembly
30
screwing it into
bring the inside face level with the internal bore.
•
Unscrew existing bleed plug until inside face is level with internal bore. This will provide a smooth passage for insertion of new
Seal
1
through rear of body.
•
Ensure the seal is well greased and the correct way round with the open end of the seal facing the rear tail jaws.
•
Complete assembly in reverse order of dismantling.
* Refers to items included in the 0753 Mkll service kit. For complete list see page 23.
Item numbers in
bold
refer to the general assemblies and parts lists on pages 30-31.
Summary of Contents for 0753 MkII
Page 2: ......
Page 38: ...38 Notes...
