Goiot Windlass Maintenance Manual
Good Automatic Windlass parts list 2017 Parts List ORDERING INSTRUCTIONS: FILL in quantity next to all items on the price sheet that you intend to order. Once your selections are complete, click on SUBMIT SELECTIONS TO ORDER FORM button to send selections to order form. This will take you to the order form to fill out your customer information. Then follow the order form instructions.
Contact Us with any questions at To Order Call 1-609-698-4402 Replacement Parts.For more information or any questions regarding windlass service parts not listed below please contact the customer service department at 1-609-698-4402. For Models A, AFD & CFD Qty.
Regular inspection of external and moving parts of gear and shaft enables a ship’s officer to judge the wear and amount of use of this important machinery. While using windlass for hoisting, an early indication can be temperature rise on the exterior of hydraulic pipe lines driving the main shaft. This further needs to be investigated for the correct technical specification and properties of the oil used and load on the motors and working pressure of the driving hydraulic oil. The bearing, pin and sliding parts of the assembly require a special grease recommended to be used on open gears to prevent them from weather damage as well. Often the maintenance routines for the filters of the hydraulic pumps used for running windlasses are followed by ship’s staff. The oil samples are also collected periodically for analysis. The main shaft or gear shaft too may be checked for temperature rise to indicate lack of or less lubrication than required.
The main shaft extends outside the gear frame and is equipped with drums, warping heads or cable lifter unit. The shaft consists of shaft and pinion and shaft roller bearing, which is lubricated through the grease nipple. The drums are usually provided with manual brakes or they can be hydraulic operated brakes. Brakes are provided with foundation plate welded to the deck.
Often windlass shaft is coupled with mooring winch and it is important to put the mooring winch brake ‘on’ and the clutch in disengage position for the winch before operating the windlass. When anchoring speed is high the anchor runs away and the brake lining might get damaged due to heat. Thus dropping the anchor and repeating the drop and stoppage at every ½ shackle is advisable to prevent damages to brake liner due to temperature rise.
In rough weather it is necessary to loosen the anchor chain tension while heaving up by using engines to avoid excessive load on the windlass. In case excessive load is applied on the windlass while heaving, bring the operating lever to neutral position then pay out the cable little bit, increase engine revolutions and heave the chain again once the load reduces.
Anchor Windlass Maintenance In Dry Dock
Speed change for windlass from high to low will cause large speed change and thus they are constructed with utmost safety features. Real Life Incident: A Loaded Panamax sized tanker vessel was preparing to anchor at Chittagong anchorage outside the port limits. While the Master decided to let go the anchor, the mate stationed forward advised to pay out slowly using the engines. The master acknowledged mate’s advise but being very experienced in such situations decided to let go the anchor and ease up the excessive loads on windlass using engines.
While letting go, strong offshore wind and current made the vessel swing abruptly and fall astern, the engine kick ahead failed to ease up the momentum and the excessive load on cable. Within few seconds the enormous weight on the cable gave it a jerk to slip while the brake was on and then the full length of the cable slipped out burning the brake liner due to heat and friction, breaking up the bitter end cover inside the chain locker and dislodging the foundation plate of windlass from the deck developing a huge crack. Fortunately none of the crew members forward were injured. Thus, assessing loads on windlass and cables while using them becomes a vital part of the maintenance procedure. A weekly schedule for windlass should involve lubricating all the plain bearings through the grease nipples and the gear teeth. Monthly or quarterly checks recommended for the condition of brake linings should be carried out depending on the frequency of use.
Monthly routines should include all the couplings, hydraulic valves and piping to be checked for leaks, tightness and functioning. Covering couplings with anti corrosive tapes can prevent them from getting rusted. The hydraulic motor foundation to be checked for tightness and any sign of wear at the base. On an yearly basis the bearing clearances, gear wheel contact areas and hydraulic valves to be adjusted for correct operating pressure. The bolts and nuts should be checked for proper tightness. The gear contact should be at least 70% or more failing which the gear wheel gives abnormal noise.
Preventive actions can be greasing of gear teeth or the realignment of windlass. Adjustment of brake settings of windlass: When the brake lining has worn away it can be adjusted to render the necessary holding force. Often manufacturer’s recommend after a specific reduction in thickness of the brake lining to replace it with new one. However, when the liner thickness reduces within the limits applicable, brake setting can be adjusted with the regulating screw as a makeshift measure. Both the linings, upper and lower should be changed at the same time. During liner replacement it is very important to secure the chain and anchor with extra lashings if the ship’s staff is carrying out this job at sea. The job should preferably be carried out in calm waters without any uneven rolling or pitching.
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When the anchor and chain is secured by the stopper and extra lashings the brake assembly can be checked. For that the brake has to be fully opened and all the pins connecting to the brake has to move smoothly, cleaning, greasing or hammering of pins may be required for this purpose. The brake nut can be used to adjust the length of brake spindle which in turn corresponds to the liner thickness. It is very important that while replacing the brake liner assembly of a windlass the position of the brake screw down lever and position of brake bands corresponding to the brake position is marked. As after replacing the liner misalignments are often observed while reassembling the whole unit.
Operation And Maintenance Manual
The spherical roller bearings assembled to the main shaft are precision built and care must be taken while removing them. If any roller bearings fail it should be completely replaced.
Never strike a roller bearing with a steel hammer. A wood hammer or soft hammer should be used to strike it lightly. Lastly, the foundation of windlass should be examined after and before each anchoring operation.