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Yanmar Diesel Engine 4TNV94L For Excavators

Basic Info

Model No.: 4TNV94L

Product Description

Yanmar diesel engine 4TNV94L For Excavators

Yanmar Diesel Engine 4TNV94L is made in Janpan . This engine is used for Yanmar mini excavator . The history of the Yanmar engine has also experienced a century. Japanese foreign horse co., LTD, founded in 1912, and in 1933 the world's first commercial use of small diesel engines is developed, and implemented the commercialization of such engine, since then has been constantly committed to the development of the world's most advanced engine technology, hold numerous patents and intellectual property rights, "foreign horse" is the world recognized brand of diesel engine, its special pride themselves on the horse's products and services.Not only do high quality products and high quality service have recognized competitive advantages in the market, but also yangma engine is famous for its green environment and the development of the most advanced oil saving technology .

Yanmar Diesel Engine 4TNV94L Specifications

3. INDUCTION AIR SYSTEM
3-1 AIR CLEANER

(1) SUPPLIED BY ● Yanmar P/N : 129944-12500
○ Other manufacturer, brand :
Type :
Drawing No. :
Size : 6 inch
(2) AIR CLEANER POSITION ● Inside bonnet
○ Outside bonnet
○ Needs modification comment :
(3) TYPE OF AIR CLEANER ● Paper element
Oil bath type is not recommended in dusty condition because performance is about 10% of paper element type
○ Other:

(4) ELEMENT ○ Single (Light dust condition)
Double element is required for the use with heavy dust condition, such as in desert, dry soil, foundry or lawn care and so on. Dust goes into engine during air cleaner service.
● Double (heavy dust condition)

○ Needs modification comment :

3-2 RAIN CAP OR PRE-CLEANER ○ Rain cap
● Pre-cleaner
○ Not installed comment :


3-3 AIR INTAKE HOSE

(1) INLET POSITION Against WATER ● Good
○ Needs modification comment :
Inlet of air hose shall be lower than air cleaner inlet port not to let water in air cleaner canister

(2) INLET POSITION Against HOT AIR ● Good
○ Needs modification comment :
Inlet of air hose shall be located not to intake hot air.

3-4 AIR INTAKE INDICATOR ● Installed ○ Mechanical ● Electrical
For filter cleaning/replacement.(YMR standard: 635 mmAq) Set point : mmAq
○ Not installed comment :
3-5 INTAKE AIR RESTRICTION kPa(mmAq) (Max. measure value)
Find allowable value related exhaust gas emission regulation in the TNV service/application manuals Limit : ≦ -300 kPa(mmAq)
mandatory to be within above value
4-4 TURBOCHARGER (T/C) ○ Yes
● No
(1) LO-PIPE Resonance (by Visual check)
LO-pipe to T/C, pipe stay to be mounted properly to avoid any resonance vibration (purpose : avoid oil leak and consecutive fire).Excess vibration causes pipe crack or turbo damage. If so, pipe length should be shortened or apply additional bracket. ○ No
○ Yes comment :

Measure if necessary


(2) LO RETURN PIPE Engine installation angle
Angle of return pipe below 30° to horizontal for LO smooth return, otherwise oil leaks from T/C. Check engine under inclination (oil leaks from turbo if inclination is above 30°. ○ Horizontal
○ Inclination
- Installation angle : degree
- Inclination side
○ fan side
○ flywheel side
○ Exh. Manifold side
○ Inlet manifold side
○ Needs modification comment :
(3) BREATHER HOSE ○ No chance to be collapsed
If breather hose is collapsed or clogged, lube oil leaks from turbo charger or oil seals ○ Sufficient length to avoid soil or dust invasion

○ Needs modification comment :
(4) BRACKET comment :
Assembled parts made by OEM should not give stress on T/C by assembly deformation, thermal expansion and piping weight..


4-5 EXHAUST BACK PRESSURE kPa(mmAq) (Max. measure value)
Find allowable value related to exhaust gas emission regulation in the TNV service/application manuals. Limit : ≦ 1300 kPa(mmAq)
mandatory to be within above value

4-6 SMOKE VALUES Load Bosch index Yanmar limit
Three measurements, average value is mentioned.(Measure smoke if necessary) High idle 0.5
1 pump relief Depending on
2 pump relief application
Acceleration 5.0

Yanmar diesel engine for min excavator
Yanmar diesel engine for min excavator


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Excavator parts: Excavator engine part, Excavator undercarriage parts, Excavator final drive, Excavator main valve, Excavator hydraulic pump.

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