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Service Manual

of WP12C Series Marine Diesel Engines

Warranty  Explanation 

1. Service promises

In  the  service  region  of  Weichai  Maintenance  and  Service Centre,   

after  received  information  from  users  and  verifying  that service  is  ne 
eded, our maintenance team shall get to the place within 24 hours in 

 which the service centre is located, within 48 hours for city areas, and within 

  72 hours for remote areas.

( remote areas or force majeure factors excluded)

2. Special attention

● The engine operator must read the Operation and Maintenance

Manual  carefully  and  abide  by  the  operation  rules  in  the Manual, and 

 pay attention to the warning directions and marks.

● The engine has been tested strictly in accordance with the test stip 

ulations before delivery. The throttle has been sealed. It is forbidden to di
smantle the seal optionally and to enlarge the throttle. Otherwise, Weichai   
will not be responsible for free repair.

●  Some  bolts  of  the  engine  are  strictly  specified  for  torque req 

uirement and times of use. It is forbidden to loosen main bearing bolts  and 
connecting  rod  bolts.  See  Operation  and  Maintenance Manual for detail. 

● Before using a new engine, a 50-hour commissioning should be 

performed.

● After the engine is started from a cold state, do not increase the  

engine speed suddenly, and do not run at idle speed for a long time. 

● After the engine is stopped, if the ambient temperature was lower than 

0°C and no antifreeze is used, the water in water tank and in diesel en
gine should be drained off.

● It is forbidden to operate the engine without a air cleaner and try to  pr 

event unfiltered air from entering into the cylinder. In severe working
conditions,  clean  or  replace  the  air  filter  element   more frequently, so 
as to prevent early abrasion of engine.

● Applied fuel and lubricating oil must be in accordance with specified 

 grades and filtered by strainer, and a special clean container should be used. 
 The fuel should be settled for more than 72 hours. 

3. The principle and stipulation of  warranty service 

● The principle of warranty Service  

   The engine purchased by users or fitted on other machinery, in case of 

using and maintaining normally within the guarantee period, the damage or  
trouble caused by manufacture and assembly etc. should be paid by our 
company.

● Time limit of warranty service (shown in appendixtable) 

  (1) For the end product of our company,  the starting date of warranty 

period is in accordance with the date on our sales invoice, warranty card or 
the formal invoice of the distributor (It should be within the 12-month oil seal 
period of the engine).

  (2) For the matching products, the starting date of guarantee period is in

accordance with the date on sales invoice or warranty card of the matched 
product ( It should be within the 12-month oil seal period of the engine). 

4.Following conditions are excluded by warranty 

● Early wear and trouble arising from improper operation and mainten 

ance, e.g.: damages from careless load and unload during transportation 
the engine by users, operation conditions beyond the specified range in
the operation manual, over-speed or over-load operation; run-in, inspection, 
adjustment and tightening not abiding by the operation manual, improper 
match,  usage of incorrect fuel, oil or antifreeze etc. 

● Troubles arising from refitting, adjusting and disassembling the posi 

tions and parts that are not allowed to adjust and disassemble casually 
according to the product specification.

● Oil, antifreeze, filter element, hose and belt etc. for normal operation 

and maintenance are not in the range of warranty  service 

● No warranty card or valid invoice, or no evidence that proves the pr 

oduct is in warranty period.

● The specification and model of product in the guarantee card or inv 

oice differs from that of the requested product for three guarantees, or the

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card and invoice was altered.

● Instead of maintaining the original damaged situation after trouble 

occurs, user treats the trouble presumptuously and the reason or 
trouble can not be verified.

Service Manual

of WP12C Series Marine Diesel Engines

Содержание WP12C350

Страница 1: ......

Страница 2: ...the starting date of guarantee is the date stated in invoices 3 If failure to input to sales contract and the purchase invoice can not be provided by user the starting date of guarantee should be as...

Страница 3: ...s strictly forbidden to disassembling and collision or the guarantee becomes invalid There are strict requirements on torque and turned angle for main bearing bolt and connecting rod bolt of diesel en...

Страница 4: ...d at idling for a long time After running at high load do not stop the engine immediately and run the engine at low speed and with no load for 5 10 min and then stop the engine 5 After the engine is s...

Страница 5: ...g System 6 2 5 Precautions for Installation of Diesel Engine Front End Output 7 Table 1 Main technical parameters of WP12C marine diesel engine CHAPTER 2 PRECAUTIONS FOR INSTALLATION OF WP12C SERIES M...

Страница 6: ...fs pg dzmjoefst Dzmjoefs cpez usbwfmjoh tdifevmf 56 921 2 6 4 7 3 5 Tfb gsfti xbufs evbm dzdmf Fmfdusjdbm Tubsujoh 786 3278 2969 2 5 331 321 1 4 21 711 61 2311 61 316 2659 3211 2911 2611 474 436 393 4...

Страница 7: ...consumption reduced by 3 8 6 Protecting environment low ash low sulphur and low phosphorous The ash content is controlled within 1 0 in order to extend the life of Diesel Particulate Filter DPF the s...

Страница 8: ...to connecte the diesel engine with gear case and after coupling is butt joined no axial force is allowed to act on the diesel engine crankshaft otherwise it will damage the thrust washer of diesel en...

Страница 9: ...or WP12C Series Marine Diesel Engine The correct maintenance and service is an important link to ensure proper and reliable operation of diesel engine and to prolong the service life of diesel engine...

Страница 10: ...air filter element Check fastening V belt Check fuel injection pump in special workshop Adjust idle speed Note Mark indicates maintenance required diesel to run and use a high pressure gun with inlet...

Страница 11: ...with anti freeze additive It is forbidden to add sea water into cooling system 3 6 2 Check and Preparation Prior to Starting 1 Check the coolant level The cooling level can be seen through glass insp...

Страница 12: ...conomy is the optimist with the engine medium speed ranging from 60 to 90 of rated speed B The engine power is increased with increase of the speed the rated power reaches at rated speed C Carry out t...

Страница 13: ...as failed please contact Weichai Maintenance and Service Center or Weichai User Service Center as soon as possible We will offer effective service to you timely Maintenance Record Table should be fill...

Страница 14: ...ld be settled for more than 72 hours 3 The principle and stipulation of warranty service The principle of warranty Service The engine purchased by users or fitted on other machinery in case of using a...

Страница 15: ...er body oil filter body muffler thrust plate suction filter idle speed boost oil dip rod tube cooling oil nozzle front and various other oil seals turbocharger intake pipe gasket exhaust pipe gasket t...

Страница 16: ...code User Mobile Phone Distributor Telephone Engine Order No Purchased Date Content Item Content Service Centre Date warranty Item Parts Changed Quantity Signed by Service Member Signed by User Constr...

Страница 17: ...o C e t o N k r t c e j o r P m e t I Very satisfying satisfying Acceptable Dissatisfying Disappointing t c e j b o f o y t i l a u Q e c n a r a e p p A e c n a m r o f r e P y t i l i b a i l e R e...

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