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4.2
Remove four retaining screws (2), rubber washers (4), washers (5) and Nyloc nuts (6) which
secure the steering ring (3) to the top tank plate and remove steering ring. Discard Nyloc nuts and
renew during assembly.
4.3
Remove two screws (24) which secure shaft guide (23) to top tank plate.
4.4
Withdraw control valve switchover shaft (22) complete with shaft guide (23) from top tank plate.
4.5
Remove 'O' rings (25) and (26) from the switchover shaft and discard.
4.6
Remove grub screw (27) from tank top plate.
4.7
Withdraw valve spring (28), valve (29) and 'O' ring (30) from top tank plate. Discard 'O' ring (30).
4.8
Remove screw (11) and remove catch lever bracket (13) complete with catch lever (10). Collect
locating ball (14) and spring (15).
4.9
Apply short pieces of adhesive tape or similar non-abrasive marking to relief valve assembly and
tank tube to indicate orientation for assembly.
4.10 Remove four countersunk socket head screws (43) from lower end of tank assembly and
withdraw tank lower end plate (40) complete with pressure relief valve assembly and 'O' rings (41) and
(42).
4.11 Remove and discard 'O' rings (41) and (42).
4.12 Withdraw ram cylinder (44) and piston rod assembly (34, 35, 36) from tank tube (45).
4.13 Withdraw piston rod assembly (34, 35, 36) from ram cylinder (44).
4.14 Hold open the tines of the piston head (34) and remove the piston valve (32).
4.15 Break the Loctite seal and remove 'O' ring (33) from the piston valve. Discard the 'O' ring and
remove remaining traces of adhesive from piston valve (32).
4.16 Remove 'O' ring (31) from piston head and discard.
4.17 Note orientation and remove eleven 'O' rings (37), cylinder sleeve (39) and nine plain washers
(38) from the piston rod. Examine 'O' rings and replace if damaged.
NOTE:
Grub screw (27) is secured with Loctite and is under slight spring compression. Take care
not to lose items during dismantling.
NOTE:
Locating ball (14) and spring (15) are retained by catch lever (10) with the spring under
compression.
WARNING!: Do not remove or attempt to adjust the pressure relief valve.