Latch System Checking For Wear; Reverse Assembly Refitting - Hamilton Jet HJ212 Installation And Service Manual

Installation and Service Manual

Latch System Checking for Wear

Check the security of the bushes [42] in the chassis block [29].
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Fit the brake rod [41] back through the bushes [42] and check for looseness, wear or stiffness in the
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bushes [42]. Replace the bushes or ream them with a 12mm drill as necessary.
When replacing the bushes [42], ensure that the bushes are replaced using Loctite 680 to secure in

position.
Inspect for wear between the hub [47] and the brake rod [41]. Replace as necessary.

Lay the spring [35] on a flat surface and check that the legs are splayed out, making an angle of about 60º

with the surface. If they are less than about 55º the spring may be too weak. If they are more than 65º
the spring will be applying too much pressure, stiffening the latch action. Adjust or replace the spring as
necessary.
When re-fitting the brake rod, the rod should have the detent notch nearer to the port side
of the vessel.
Re-assemble the hub [47], brake plates [46] and spring [35] onto the brake rod [41].

If clearance the hole in the brake plate has worn too much and both brake plates should be replaced, or
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turned around so that an unworn edge of the brake plate hole bears on the brake rod.
Ensure that the brake plates [46] lock the brake rod [41] in both directions.

Check the brake release nyloc nuts [45]. They should be stiff on the shaft. If there is any sign of looseness
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they must be replaced. These items ensure the brake can be released and the reverse control operated.
Ensure that on re-assembly the chassis block [29] is assembled the correct way round with the large hole
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end to port as shown on the drawing.
Ensure that the detent plate [23] has sufficient spring to make a clear click in the brake rod notch.


Reverse Assembly Refitting

Failure of certain components can cause loss of stopping ability, or a sudden dangerous
stop while under way. Make sure that the following components are regularly checked:
Security of the cable mounts and attachments [53], [55] and [57].

Latch adjustment [45].

Freedom of the reverse shaft [8].
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Security and correct torque on the duct-link bolt [25].

Freedom of movement of the duct [1].
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Clearance between the duct and the splash guard [58].
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Security of the splash guard bolts [59].
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Security of the duct pivot pins [4].
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Maintain the reverse system in good condition.
9-9
Overhaul