Komatsu D39EX-21 D39PX-21 Manual

Komatsu D39EX-21 D39PX-21 Manual

Complete service repair workshop manual for the:

Komatsu D39EX-21, D39PX-21 Bulldozer Dozer

The same shop manual heavy machinery mechanics use which contains all the information needed to perform service and repairs on the dozers.  Complete step by step information testing, adjusting, dis-assembly, assembly, minor engine, electrical, servicing and preventative maintenance. The D39EX,PX-21 mounts the SAA4D102E-2 engine.  For details of the engine, refer to manual below (sold separately):

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Posted in HEAVY MACHINERY, Komatsu, Komatsu Bulldozers Crawlers

{ 3 comments… read them below or add one }

Hugh March 3, 2014 at 3:17 pm

Model D39 EX21 Serial#1210
I need a shop manual to check the hydrostatic transmission assembly and repair it if necessary complete breakdown of parts and procedures etc.Do you have this available and what is the cost?

tom May 28, 2014 at 11:58 am

I have a 2005 D39ex-21a and the decelerator pedal is not coming up, not allowing the unit to engage the transmission and move. Is there a place I can see a picture of the system and location of components involved in its function.

jeff roberson September 21, 2016 at 2:10 pm

This is not the complete manual. It is only the operation and maintenance manual.

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