C7 Diesel Used Engine Blocks For Excavator E329D Water Cooling 221-4479
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C7 Diesel Used Engine Blocks For Excavator E329D Water Cooling 221-4479
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Features
Basic Infomation
Place of Origin: USA
Brand Name: Caterpillar
Model Number: C7
High Light:

E329D Used Engine Blocks

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221-4479 Used Engine Blocks

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C7 Used Diesel Engine Blocks

Payment & Shipping Terms
Packaging Details: Neutral Package or Fumigation Free
Delivery Time: 5 - 8 work days
Payment Terms: D/P, T/T
Supply Ability: 10 pieces
Specifications
Excavator Model: E329D
Engine Model: C7
Part Number: 221 - 4479
Quality: High Quality
Size: Standard
Condition: Used
Color: Same As Pictures
Material: Steel
Product Description

 

 

C7 Diesel Used Engine Blocks For Excavator E329D Water Cooling 221 - 4479

 

 

Specification

 

Car name: Engine cylinder block
Model Number: C7
Cylinder stroke: 127
Cylinder diameter: 110
Application: Excavator
valve: 18 valve
Cooling: Water cooling
Injection: Electric
Work form: Turbo

 

 

Description

 

About crack

 

Something else to keep in mind about cracks is that they are often the result of too much heat. A leaky head gasket, water pump, radiator or coolant hose may have allowed a loss of coolant that eventually caused the engine to run hot and overheat. An exhaust restriction caused by a partially plugged catalytic converter (or particulate filter on a diesel engine) can also back up heat in an engine. So it’s important to identify and eliminate anything that might have caused the engine to overheat before it is put back in service – otherwise your crack repairs may be short lived.

 

Hot or Cold Repairs

 

diesel_repair_1Crack repairs can be made cold (pinning) or hot (welding and brazing). The method used will depend on the size of the crack and the type of casting (cast iron or aluminum). The main advantage of making cold crack repairs is that it requires no heat. No heat means no extra time needed to preheat and post cool the casting, and presents no danger of warping or distorting the casting. Heating a cylinder head or block causes it to expand, which in turn creates thermal stress in the metal that may lead to subsequent cracking when the metal cools – especially if it cools too quickly.

 

With pinning, there’s also less concern about making sure the metal around the crack is perfectly clean. Any type of welding requires a perfectly clean surface that must be free of contaminants such as grease, oil or dirt. This means the casting must be pre-cleaned before it can be welded. Also, welding requires grinding out the crack with a die grinder so new metal can fill the void and fuse to the metal on either side of the crack.

 

With cast iron heads and blocks, 80 percent of cracks can usually be repaired with iron or steel pins or tapered plugs while 20 percent of cracks will require furnace welding, flame spray welding or brazing. With aluminum heads and blocks, it’s just the opposite. About 80 percent of cracks are repaired by tungsten inert gas (TIG) welding while 20 percent of cracks are repaired with aluminum pins or plugs.

 

 

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