Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

Chinese site
cce client portal
Alatas on Facebook Follow Alatas on Twitter Follow Alatas on Google Plus Alatas You Tube Channel Alatas Linkedin
 
PUSNES Windlass Main Shaft Repairs on Anchorage
 
  • The vessel is equipped with Windlass cum Mooring winches make PUSNES, type 220 HW & type 245 HW.

    Customer reported that the Port forward windlass claw coupling had cracked and that the bearing bushes of the main shaft of Port & STBD mooring winches were damaged.

    In-order to carry out this major windlass repair, usually shipyard facilities and yard crane is needed, among others to lift the main shaft (estimated weight 5 ton) so that the bushes can be replaced.

    ALATAS has been informed by our customer that the vessel is on a tight schedule and cannot berth at a shipyard. Instead, the job has to be carried out at anchorage, at OPL (Outer Port Limit), and the time available is 3 days only. Normally we would have used the floating crane. But, since the floating crane rental cost is high if it is arranged at OPL, we proposed an economically viable solution. i.e. to lift-up the main shaft by using a ALATAS designed and specially constructed and modular A-frame, that can be assembled on board without lifting aid.

    Following was the job scope carried out by our experienced deck machinery repair team:

    1. All the tools, equipment and A- Frame items were shifted from midship location to windlass.
    2. Assembled and Placed A-Frame on top of Fwd STBD mooring winch location.
    3. Instructed ship crew to remove the wire rope from the STBD mooring drum.
    4. Fabricated the special tools and jacking out the capstan using hydraulic jack and ‘A’ frame.
    5. Removed winch end frame and mooring winch drum using ‘A’ frame, bushes were found to be totally damaged.
    6. Cleaned and inspected the main shaft, drum housing and capstan.
    7. Machinist brought the new bushes on board.
    8. Alatas Machinist measured the main shaft and carried out machining of the new pre-fabricated bushes to final size
    9. Installed the fabricated new bushes and mounting frame, and adjusted the alignment using filler gauge.
    10. Installed back the capstan as well as the dismantled parts to the main shaft
    11. Applied the grease to all greasing point.
    12. Carried out function test and alignment check in the presence of superintendent, Chief Officer and Chief Engineer. The STBD windlass finally found to be in sound condition without any abnormal noise and vibration.
    13. Thereafter, Proceeded to the Port side anchor windlass to replace the bushes and claw coupling.
    14. Shifted the ‘A’ frame and tools to the port side windlass.
    15. Upon dismantling the drum, found that claw coupling was fully cracked.
    16. Removed the cracked coupling, cleaned main shaft and installed the new claw coupling.
    17. Our machinist measured the main shaft and carried out machining of the new pre-fabricated bushes to final size and followed by installation of mooring drum.
    18. Installed back the capstan and other dismantled parts to the main shaft.
    19. Applied the grease to all greasing point and carried out function test in the presence of Superintendent, Chief Officer and Chief Engineer.
    20. PORT windlass operation found to be satisfactory with smooth operation, there are no abnormal noise and no vibration.
    21. Dismantled A – Frame, tools and other materials,  arranged them properly for offloading.

 

Main Shaft Repair
Main Shaft Repair

Stbd windlass view

Port anchor winch brake band

   
Main Shaft Repair
Main Shaft Repair

Removing process of capstan

Pull out capstan

   
Main Shaft Repair
Main Shaft Repair

Removing foundation bolts

Removing drum from the shaft

   
Main Shaft Repair
Main Shaft Repair
Grinding to cut the bush for removing purpose

Fabricate foundation plate instead of chockfast

   
Main Shaft Repair
Main Shaft Repair
Cleaning the mainshaft

Install new bush and greasing ok

   
Main Shaft Repair
Main Shaft Repair
New bush and grasing hole ok

Installing new claw coupling

   
Main Shaft Repair
Main Shaft Repair
Gearing the port claw coupling

Testing the winch after repairing. Found good

   
 
 
Download

 

 
 
 
Alatas Latest News
ILO 152 renewal and certification
Inspections and ILO 152 certification
details...
Crane cabin replacement
Crane cabin replacement and general repairs
details...
Liebherr crane luffing cylinder repairs
Liebherr CBW crane luffing cylinder replacements
details...
Crane control system
Ship crane control system replacement
details...
Hose replacement
Hydraulic hose renewal on Liebherr offshore cranes
details...
Crane bumper bars protect lattice boom crane from hook strikes
Crane bumper bars protect lattice crane booms
details...
Dock crane
Critical Dock Crane slew bearing repairs
details...
Hagglund crane
MacGreor Hagglunds Gl2524-2 slew bearing replacementl
details...
MacGregor crane rope sheave changeout
MacGregor crane rope sheave changeout
details...
Searex crane
Commissioning of 210 tons Searex Omnilift Offshore Crane
details...
 
 
 
Alatas Offices & Service Stations
Alatas UK Ltd - Head Office
Unit B, Olympic Park, Low Moor,
Bradford BD12 0LP
Tel: +44 1274 699222
Fax: +44 1274 699215
26 Abercrombie Court, Prospect Road, Arnhall Business Park, Westhill, Aberdeenshire AB32 6FE
Tel: +44 1224 797232
Houston Office, 22015, South Frwy.
Manvel, Texas 77578 USA
Tel: +1 281 431 0707
Fax: +1 281 431 0799
Riedemannstr. 2, 28239 Bremen
Germany
Tel: +49 421 / 61 94 184-0
Fax: +49 421 / 61941845
2203 Winning Centre, 29 Tai Yau Street, San Po Kong, Kowloon, Hong Kong
Tel: +852 2153 2153
Fax: +852 2153 2163
Carretera Carmen-Puerto Real Km. 14.5
Cd. Del Carmen, Campeche. México, C.P. 24157
Tel: +52 (938) 68 8 52 60
Fax: +52 938 110 6823
Jebel Ali Free Zone - South, P.O. Box 263 007
Dubai United Arab Emirates
Tel: +971 4 885 7954
Fax: +971 4 885 7229
Kjøita 6, 4630 Kristiansand,
Norway
Tel: +47 977 48345
Fax: +47 976 48345
C/O: Houston Office, 22015, South Frwy.
Manvel, Texas 77578 USA
Tel: +1 281 431 0707
Fax: +1 281 431 0799
1 Int'l Business Park #03-01E
The Synergy, Singapore 609917
Tel: +65 6861 2336
Fax: +65 6861 6261
Recapital Buiding 5th Floor, Jalan Adityawarman Kav.55, Kebayoran Baru, Jakarta Selatan, 12160
Tel: +62 21 7247679
Fax: +65 6861 6261
No. 51, Lane 3226, Humin Road, Minhang District, Shanghai 201108
Tel: +86 (021) 6296 6612
Alatas on Facebook Follow Alatas on Twitter Follow Alatas on Google Plus Alatas You Tube Channel Alatsa Linkedin Share

© 2018 Alatas Worldwide Group | Privacy Policy

 

  You are here: Home > News > Boom hinge repairs on Kawasaki deck cranes