SERVICE
REPORT
JOB NO: 20110220
Page 1 of 6
VESSEL:
PORT:SG
DATE:12 MARCH 2011
MAKE:
KAWASAKI
EQUIPMENT:
WINDLASS HYDRAULIC MOTOR
MODEL: S270
DEFECTS REPORTED / REASON FOR CALL :
MOTOR NOT WORKING/ INSPECTION and OVERHAUL
ITEM
DESCRIPTION
REMARKS
SHOPTEST
HOOK UP TO CARRIED
OUT SHOPTEST.
PRESSURE UP TO 100
BAR AND FOUND MOTOR
1
NO RESPOND. NOT
TURNING.
PROCEED TO
DISMANTLE MOTOR.
FOUND
OLDHAM
2
COUPLING BROKEN.
HYDRAULICS AND AUTOMATIONS SPECIALISTs - Sales and Service Centre
27 years over 8000 track records. www.joblist.raycontrol.com
SERVICE
REPORT
RayControl Pte Ltd
7 TOH GUAN ROAD EAST #05-07 ALPHA IND BLDG SINGAPORE 608599
TEL: +65 65630544 FAX: +65 65600941 email:sales@raycontrol.com
JOB NO: 20110220
Company Reg No : 198602637N
Affiliated : E-Trust Automation Pte Ltd
Page 2 of 6
VALVE SPOOL FOUND
COMPLETELY JAMMED
WITHIN.
3
HYDRAULICALLY
PRESSED OUT VALVE
SPOOL
4
DISTRIBUTOR HEAD
Internal scoring, send for minimal honing
and polishing.
VALVE SPOOL
Found seal ring fused into groove.
Send for machining out, dress and
polishing.
HYDRAULICS AND AUTOMATIONS SPECIALISTs - Sales and Service Centre
27 years over 8000 track records. www.joblist.raycontrol.com
SERVICE
REPORT
RayControl Pte Ltd
7 TOH GUAN ROAD EAST #05-07 ALPHA IND BLDG SINGAPORE 608599
TEL: +65 65630544 FAX: +65 65600941 email:sales@raycontrol.com
JOB NO: 20110220
Company Reg No : 198602637N
Affiliated : E-Trust Automation Pte Ltd
Page 3 of 6
5
HIGH/LOW SPEED
Found High/Low speed seal rings fused.
Complete dismantle SHAFT CAM UNIT for
Machining Rework.
HYDRAULICS AND AUTOMATIONS SPECIALISTs - Sales and Service Centre
27 years over 8000 track records. www.joblist.raycontrol.com
SERVICE
REPORT
RayControl Pte Ltd
7 TOH GUAN ROAD EAST #05-07 ALPHA IND BLDG SINGAPORE 608599
TEL: +65 65630544 FAX: +65 65600941 email:sales@raycontrol.com
JOB NO: 20110220
Company Reg No : 198602637N
Affiliated : E-Trust Automation Pte Ltd
Page 4 of 6
6
RENEW ALL PISTON SEALS
Piston shoe light lapped and polish. Orifice checked and cleaned.
All piston seals were renewed one by one to respective chamber.
HYDRAULICS AND AUTOMATIONS SPECIALISTs - Sales and Service Centre
27 years over 8000 track records. www.joblist.raycontrol.com
SERVICE
REPORT
RayControl Pte Ltd
7 TOH GUAN ROAD EAST #05-07 ALPHA IND BLDG SINGAPORE 608599
TEL: +65 65630544 FAX: +65 65600941 email:sales@raycontrol.com
JOB NO: 20110220
Company Reg No : 198602637N
Affiliated : E-Trust Automation Pte Ltd
Page 5 of 6
PISTON GUIDE RING X 02 NOS
Piston guide rings found stretched and damaged by almost 10mm wide clearance
7
as compared to Kawasaki original. Renewed piston guide ring.
02 Nos New original guide ring installed.
HYDRAULICS AND AUTOMATIONS SPECIALISTs - Sales and Service Centre
27 years over 8000 track records. www.joblist.raycontrol.com
SERVICE
REPORT
RayControl Pte Ltd
7 TOH GUAN ROAD EAST #05-07 ALPHA IND BLDG SINGAPORE 608599
TEL: +65 65630544 FAX: +65 65600941 email:sales@raycontrol.com
JOB NO: 20110220
Company Reg No : 198602637N
Affiliated : E-Trust Automation Pte Ltd
Page 6 of 6
8
SHOPTESTED
Load Holding Pressure at 250 bar satisfactory. (minimum is 210 Bar).
High / Low speed tested satisfactory.
Leak free tested satisfactory.
REMARKS :-
ANALYSIS :-
Motor found with oldham coupling broken, distrubutor valve siezed and jammed.
Same was for high/low speed along shaft with seal ring fused into seal groove.
Aslo piston shoe guide rings were elongated and stretched.
This is sign of motor overrun BY THE LOAD.
9
RECOMMENDATION :-
1.Please check the counterbalance valve. This valve provide controlled payout.
2.All windlass operations MUST BE SWITCHED TO LOW SPEED MODE.
Otherwise the motor will be damaged again.
Reports by
Tan Ray
Specialist Engineer
HYDRAULICS AND AUTOMATIONS SPECIALISTs - Sales and Service Centre
27 years over 8000 track records. www.joblist.raycontrol.com
