Mack E7 Service Manual page 244

5-101.bk Page 4 Friday, March 17, 2006 11:05 AM
200 SETUP AND ADJUSTMENTS
2. Back off the valve rocker adjusting screws.
3. Loosen the No. 1 cylinder yoke adjusting
screw locknuts.
4. Exert moderate force on the yoke by
pressing on the rocker arm slipper end. Turn
down the yoke adjusting screw until it makes
solid contact with the outboard valve stem
tip, as sensed by a light drag on the
adjusting screw.
5. Turn adjusting screw an additional 1/6 turn
(60 degrees) clockwise.
A 1/6 turn is equal to one flat on the adjusting
screw locknut.
6. Hold the yoke adjusting screw in this
position while tightening the adjusting screw
locknut. Torque locknut to 33 lb-ft (45 N•m)
using torque wrench J 24407 or equivalent.
Page 7-4
Figure 7-2 — Flywheel Marks
Figure 7-3 — Yoke Adjusting Screw and Locknut