Doosan DX60R Shop Manual page 410

Pinion Clutch Assembly
Pinion Clutch Assembly Inspection
Manually rotate the pinion clutch assembly in the drive direction
(Figure 365). It should rotate freely in the drive direction and is
locked by turning it in the opposite direction. Replace the pinion
clutch assembly if the results are different.
Slide the pinion clutch assembly on the shaft. It should slide
smoothly on the shaft (Figure 366). Rust, too much grease or
damage could prevent the pinion clutch from sliding smoothly.
If the pinion clutch assembly does not slide smoothly, clean the
shaft and pinion clutch assembly or replace the damaged
component.
Ball Bearing Inspection
Rotate each ball bearing while holding the pinion clutch
assembly (Figure 367). Replace the ball bearing if it does not
rotate smoothly or has excessive play.
Engine
Page 230
Figure 365
Figure 366
Figure 367
SP001693