Royal Enfield Z-Drive 130, Service Manual And Parts List

Page: 11 / 29

11
OVERHAUL SECTION
1. Transom Plate Assembly - 130
2. Transom Plate Assembly - 130H. 130 Non Swivel.
3. Swivel Fork
4. Hydraulic Trim Tilt Equipment
5. 130 "Z-DRIVE" Housing, Lower
6. 130 "Z-DRIVE" Housing, Upper
7. Checking for Backlash
INTRODUCTION
Disassembly of the "Z-DRIVE" transom unit for
inspection may be accomplished by following the
procedures outlined below:
1. Transom Plate Assembly:
2. Drive Housing
(a) Lower
(b) Upper
1. TRANSOM PLATE ASSEMBLY
When the disassembly ,procedure for any given
section has been completed, any further disassembly
indicated by inspection may then be carried out by
following in detail the necessary additional procedures.
When removing or refitting ball and roller bearings, it is
recommended that the housings, etc., should be
heated in water to maintain manufacturing tolerances,
and so avoid possible loosening of the bearings in the
housings.
When re-assembling the unit, all gaskets and '0' rings
must be removed. Dirt is a major cause of wear and
failure; therefore, conduct all maintenance operations
in an area which is as clear and clean as possible.
Place the disassembled parts on a clean surface and
if they are to remain for an extended period of time,
cover exposed-surfaces, which can be contaminated
by salt air, etc. For parts identification numbers refer to
the illustrations contained in the Parts List section.
The following instructions assume that the unit has
been removed from the craft. For ease of dismantling
the unit can be split into two parts. These are (1) the
Transom Plate and (2) Drive Housing. To accomplish
this the following procedure should be adopted:
Drain off the oil into a clean container.
TRANSOM PLATE ASSEMBLY 130
To Disassemble the Transom Plate Assembly
If the transom plate assembly has been removed from
the craft with the close coupling components still
connected, remove these first.
Knock back the tabwashers (61) locking the set screws
(60) that hold the flexible couplings (59) to the input
shaft (55). Unscrew the bolts (60) and remove the
flexible coupling (59).
Undo the nut (57) on the universal coupling input shaft
(55) and remove with the washer (58). The input shaft
(55) can now, without the aid of special tools, be pulled
out of the transom plate. It will bring with it the inner
race to the roller bearing (21). Using a suitable drift,
the universal coupling
shaft (56) can be tapped
through its ball bearing (22) in the opposite direction to
which the input shaft was removed.
The oil seal (24) and bearings (21) in the swivel hub
(20) can be inspected and if necessary changed.
Removal of Swivel Hub from Transom Plate
Remove from the hub the six socket screws (42),
(retaining the wormwheel). (41)
Remove the seven socket screws (40) that retain the
wormdrive housing (33) to the transom plate (1)
Rotate the swivel plate (44) and hub (20) so that the
lug clears the hook in the transom.
Undo the six nuts (51) or the countersunk screws (54)
and withdraw the swivel plate from the hub.
Using a suitable drift on the inboard end of the swivel
hub (20) tap the swivel hub through the transom plate
(1) in a rearwards direction. When the hub is clear,
the sealing '0' rings (29, 30) and nylon thrust washer
(32) and bearing strips (31) will be evident and can be
removed.
It is not necessary to remove the swivel hub (20) to
replace the front oil seal (24) as this can be done after
the input shaft (55) has been removed.
If the bearings roller (21) and ball (22) require
renewal, the swivel hub (20) must be heated such as
in boiling water and the bearings tapped clear with a
drift or extractor.