John Deere約翰迪爾強(qiáng)鹿柴油發(fā)動(dòng)機(jī)氣門彈簧的檢查和測量

1. Inspect valve springs for alignment, wear, and damage.

2. Using D01168AA Spring Compression Tester, checkvalve spring tension. Compressed height must bewithin specification given below.

Valve Springs—Specification

Spring Free Length 0 N (0lb-force)1—Height ....................................................... 54.0 mm (2.125 in.)

Spring Compressed 240—280 N(54—62 lb-force)—Height............................................. 46.0 mm (1.81 in.)

Spring Compressed 590—680 N(133—153 lb-force)—Height......................................... 34.5 mm (1.36 in.)