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Showing posts with label d4. Show all posts
Showing posts with label d4. Show all posts

Sunday, April 27, 2025

Hydraulic cylinder repair by Matt at Diesel Creek

Matt showed how to repair the hydraulic cyclinders of D4 Komatsu bulldozer. He had deferred such repair for 5 years, although it cost him much in terms of lost hydraulic fluid that leaked.

As usual, it is demonstrated that disassembly was mostly hard and challenging.  He improvised:
     1.  How to remove the cylinder cover by welding a flatbar which he hammered;
     2.  Pulling out the internal rod by using a back hoe.

The seals and glands were bought from the store and Matt reinstalled them well.  

Black smoke after replacing turbos and injector

 It could be due to the intercooler.   Signs of defective intercooler:   black soot and oil at the underside from the leak.