Komatsu 4D88E, 4D98E, 4D106 Series Engine Manual

Komatsu 4D88E, 4D98E, 4D106 Series Engine Manual

$26.00

Publication: WEBMTNV000
Format: PDF
Language: English

Komatsu 4D88E, 4D98E, 4D106 Series Engine Service Repair Manual – 280 Pages

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Komatsu 4D88E, 4D98E, 4D106 Series Engine Manual

Komatsu Engines
Publication: SEBM011501
Format: PDF
Language: English

Komatsu 4D88E, 4D98E, 4D106 Series Engine Service Manual – 280 Pages

Engine Applicable machine, Serial number

 

APPLICABLE MACHINE MODEL ENGINE MODEL
YANMAR DESCRIPTION KOMATSU DESCRIPTION
PC45R-8 4TNV88-N5FA 4D88E-5NFA
PC75R-2 4TNV98-X2FB 4D98E-2XFB
PW75R-2 4TNV98-X2FB 4D98E-2XFB
PC95R-2 4TNV106-S2FB 4D106-2SFB
PW95R-2 4TNV106-S2FB 4D1062SFB
SK818-5 4TNV88-K5FD 4D88E-5KFD
SK1020-5 4TNV98-N2FE 4D98E-2NFE
WB70A-1 4TNV98-N2FA 4D98E-2NFA
WB91R-2 4TNV106-S2FA 4D106-2SFA

 

Table of Content of the Komatsu 4D88E, 4D98E, 4D106 Engine Manual:

1. General …………………………………………………………………………………………. 1
2. Inspection and Adjustment……………………………………………………………… 22
3. TROUBLESHOOTING…………………………………………………………………… 53
4. Disassembly, Inspection and Reassembly of Engines………………………… 59
5. LUBRICATION SYSTEM ……………………………………………………………… 108
6. COOLING SYSTEM………………………………………………………………………112
7. FUEL INJECTION PUMP/GOVERNOR……………………………………………114
8. TURBOCHAGER: Disassembly, inspection and reassembly…………………118
9. STARTING MOTOR…………………………………………………………………….. 140
10. ALTERNATOR…………………………………………………………………………… 176
11. ELECTRIC WIRING …………………………………………………………………… 180
12. SERVICE STANDARDS …………………………………………………………….. 185
13. TIGHTENING TORQUE for BOLTS and NUTS ……………………………… 196

Breather system (A reductor to intake air system of blowby gas)
Emitting blowby gas is harmful to natural environment. Therefore blowby gas reductor is adopted to TNV series naturally- aspirated engines as breather system (Turbocharged engines emitblowby gas).
The system of model 3/4TNV84 is shown as a representative of that breather system in the right figure. Some of the combustion gas passes through the clearance between the cylinder and the piston, piston ring, and flows to the crankcase.
This is said as blowby gas. While it passes into the cylinder head and the rocker arm cover, the blowby gas mixes with splash oil, and becomes oil mist-blowby gas mixes with splash oil, and becomes oil mist-blowby gas ith passing through the baffle plate inside a rocker arm cover. And it passes through a diaphragm assy, and a intake manifold, and is reduced in the combustion chamber. Pressure inside a crankcase is controlled by the function of the diaphragm assy, and suitable amount of blowby gas is reduced in intake air system.

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