DETROIT DIESEL 53
Gear Train and Timing 1.7.1
side of the circle timing mark (Fig. I)for a right-hand rotation engine. For standard timing, the circle on the
crankshaft gear is aligned with the circle-triangle on the idler gear. For advanced timing, the "A" adjacent to the
"IR" on the crankshaft gear is aligned with the circle-triangle on the idler gear.
February, 1972 SEC. 1.7.1 Page 3