Crankshaft Repair of MAN B&W 6L 16/24 In Malaysia

crankshaft — Sat, 28 Dec 2024 09:13:41 +0000

Major accident took place in the case of Auxiliary Engine MAN B&W 6L 16/24 on board a vessel owned by a leading Malaysian shipping company. The photographs of the damaged engine block and crankshaft were shared with RA Power Solutions.

Considering the serious damage to the Auxiliary Engine MAN B&W 6L 16/24, a team of three (3) technicians was deputed, which consisted of a Senior Metal Stitching Engineer and Two (2) technicians to repair the crankshaft.

The vessel was boarded by our technicians in Pasir Gudang. Following are the main details of the engine:

S. No.	Crankpin Details
1.	Engine Make	MAN B&W
2.	Engine Model	6L 16/24
3.	Crankpin Diameter Standard	130.00 MM
4.	Crankpin Bearing Width	56.00 MM
5.	Place of Execution of Grinding of Crankpin	Pasir Gudang Anchorage, Malaysia
6.	Name of Shipping Company	Reputed Company from Kuala Lumpur

Inspection of Crankshaft:

All the crankpins were inspected dimensionally, and line marks and ovality were observed on all the crankpins. The standard diameter of crankpin was 130.00 MM.
All other parameters, like hardness, and crack detection by MPI, were found within limits.
On visual inspection of the radius fillet of two (2) crankpins was found damaged.

Inspection of Engine Block

The Engine Block window seating area of Unit number #04 (Port Side) was found badly damaged.
The Cam Case was also found broken.

Few Photographs of the damaged Cam Case are given below:

Broken Camshaft Area of the Window	Damaged Window cover Sittting Area

Action Taken by RA Power Solutions to Repair of Crankshaft and Engine Block of MAN B&W 6L 16/24

i. Considering the damage, all six (6) crankpins diameter was reduced from 130.00 Mm to 129.50 MM, maintaining the tolerance of 0.02 MM.

A copy of the report indicating the final dimensions is pasted below:

SIZE OF CR PINS AFTER REPAIR
	A	Aa	C	Cc	B	Bb	Min	US (0.50 MM)	Ovality
CR-1	129.48	129.49	129.49	129.48	129.50	129.50	129.48	129.50	0.02MM
CR-2	129.48	129.49	129.50	129.49	129.48	129.49	129.48	129.50	0.02MM
CR-3	129.49	129.50	129.50	129.48	129.49	129.50	129.48	129.50	0.02MM
CR-4	129.48	129.49	129.48	129.50	129.48	129.50	129.48	129.50	0.02MM
CR-5	129.49	129.49	129.48	129.50	129.48	129.49	129.48	129.50	0.02MM
CR-6	129.48	129.49	129.49	129.50	129.50	129.48	129.48	129.50	0.02MM

ii. The broken engine block was repaired by Metal Stitching Process. The new pieces of casting were metal stitched as shown in the photographs.

Initial Cut Given in Engine Block Window Area	Fitment of New Casting in Damaged Area

MAN B&W Model No.6L 16/24 during metal lock	Metal locking of broken area of MAN B&W Model No.6L 16/24

iii) The Undersize bearings were also supplied by RA Power Solutions.

iv) The Engine was commissioned in the presence of our technicians and performance was found satisfactory.

Pasting of Casting by Metal Lock Process	Perfect Matching of Casting After Metal Locking

Cam Cover Area Metal Stitched

We have been regularly executing on site crankshaft repairs and In Situ Crankshaft Grinding in Dubai, Fujairah, Qatar, Saudi Arabia, Oman, Iraq, Togo, Malta, Freetown, Egypt, Malaysia, Iran, Indonesia, Vietnam, Jordan, etc.

For more details of the Damaged Engine Block by Metal Stitching Process, Onboard Crankshaft Repair Services, repair of crankshaft onsite, in situ crankshaft grinding and repair of MAN engine, onsite crankshaft grinding repair services, onsite crankshaft grinding and repair please email us at info@rapowersolutions.com or call +91 9582647131, or +91 9810012383.

The post Crankshaft Repair of MAN B&W 6L 16/24 In Malaysia appeared first on Crankshaft Grinding Repair.

Bearings For Yanmar | Daihatsu | MAK | MAN

crankshaft — Mon, 16 Dec 2024 10:44:06 +0000

Bearings for Popular Make of engines installed on vessels, such as main engines or auxiliary engines, are available with RA Power Solutions.

RA Power Solutions is a leading onsite crankshaft repair company, extending services for over 44 years all over the world. We understand the requirement of standard and undersize bearings especially after the grinding of the crankshaft is executed it is difficult to get the undersize bearings, as their delivery period is long and it is not possible for the ship owner to hold the vessel indefinitely.

RA Power Solutions in order to facilitate clients, especially from the shipping industries, maintain a large stock of crankpin/main journal bearings. The bearings are available with us in different undersizes, as recommended by the manufacturer.

In most cases, our technicians hand carry the undersize bearings with them and the same are assembled immediately after grinding of the damaged crankshaft is undertaken, this saves breakdown time. The bearings of most of the popular make and models are available.

A list of a Few Models is given below:

Sr No.	Description
Yanmar Engine S 185L Standard Crankpin Diameter-140 mm
1	a) 0.80 mm Undersized Crankpin Bearing
	b) 1.20 mm Undersized Crankpin Bearing
	c) 1.60 mm Undersized Crankpin Bearing
	d) 2.00 mm Undersized Crankpin Bearing

Yanmar Engine 6N18AL-DN/DV Standard Crankpin Diameter-145 mm
2	a) 0.40 mm Undersized Crankpin Bearing
	b) 0.80 mm Undersized Crankpin Bearing
	c) 1.20 mm Undersized Crankpin Bearing
	d) 1.60 mm Undersized Crankpin Bearing
	e) 2.00 mm Undersized Crankpin Bearing
	f) 2.40 mm Undersized Crankpin Bearing
	g) 2.80 mm Undersized Crankpin Bearing

Daihatsu 6DL -16 Standard Crankpin Diameter-120 mm
3	a) 2.50 mm Undersize Crankpin Bearing
	b) 3.00 mm Undersize Crankpin Bearing
	c) 4.00 mm Undersize Crankpin Bearing

Daihatsu 5DC-17 Standard Crankpin Diameter- 145 mm
4	a) 0.50 mm Undersized Crankpin Bearing
	b) 1.00 mm Undersized Crankpin Bearing
	c) 1.50 mm Undersized Crankpin Bearing
	d) 2.00 mm Undersized Crankpin Bearing
	e) 2.50 mm Undersize Crankpin Bearing
	f) 3.00 mm Undersize Crankpin Bearing
	g) 4.00 mm Undersize Crankpin Bearing

Daihatsu 5DK-20 Standard Crankpin Diameter-170 mm
5	a) 0.50 mm Undersized Crankpin Bearing
	b) 1.00 mm Undersized Crankpin Bearing
	c) 1.50 mm Undersized Crankpin Bearing
	d) 2.00 mm Undersized Crankpin Bearing
	e) 2.50 mm Undersized Crankpin Bearing
	f) 3.00 mm Undersized Crankpin Bearing
	g) 3.50 mm Undersized Crankpin Bearing
	h) 4.00 mm Undersized Crankpin Bearing
	i) 5.00 mm Undersized Crankpin Bearing

Daihatsu 8DKM-28 Standard Crankpin Diameter-235 mm
6	a) 0.50 mm Undersized Crankpin Bearing
	b) 1.00 mm Undersized Crankpin Bearing
	c) 1.50 mm Undersized Crankpin Bearing
	d) 2.00 mm Undersized Crankpin Bearing
	e) 2.50 mm Undersized Crankpin Bearing

MAK 8M20Standard Crankpin Diameter-152 mm
7	a) Standard Undersized Crankpin Bearing
	b) 1.00 mm Undersized Crankpin Bearing
	c) 1.50 mm Undersized Crankpin Bearing
	d) 2.00 mm Undersized Crankpin Bearing

MAN CME 5L 16/24 Standard Crankpin Diameter- 130 mm
8	a) 0.50 mm Undersized Crankpin Bearing
	b) 1.00 mm Undersized Crankpin Bearing
	c) 1.50 mm Undersized Crankpin Bearing
	d) 2.00 mm Undersized Crankpin Bearing
	e) 2.50 mm Undersized Crankpin Bearing

MAN 6L 23/30H Standard Crankpin Diameter-185 mm
9	Key Position 12.5 x 15.5
	a) 1.50 mm Undersized Crankpin Bearing
	Key Position 7.7 x 10.7
	a) 1.50 mm Undersized Crankpin Bearing
	b) 2.00 mm Undersized Crankpin Bearing

MAN 9ASL 25/30 Standard Crankpin Diameter-195 mm
10.	a) 2.50 mm Undersize Crankpin Bearing
	b) 3.00 mm Undersize Crankpin Bearing
	c) 4.00 mm Undersize Crankpin Bearing

We regularly supply engine bearings for crankpins, tri-metal bearings, engine tri-metal bearings, and bearings for all makes and models of engines like Yanmar, Daihatsu, MAK, MAN B&W, etc.

For more information regarding Yanmar, Daihatsu, MAN, MAK bearings, Repair of Crankshaft of Daihatsu, crankshaft bearing journal grinding service, in situ crankshaft grinding and repair of MAN engine, MAN Engine Crankshaft Repair, Repair of crankshaft of MAN Engine contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91-9582647131 or +91-9810012383.