Connecting rod alignment tool

On car or multi-cylinder engines, observation should be made for big-end off-sets as at F and for small-end clearances during assembly, using a flashlight. Connecting Rod Alignment Connecting Rod Alignment For checking connecting-rod alignment, the essentials are, first, two well-fitting parallel mandrels-one for the small-end, the other for the bigend, each about 3 in. Prev: Next: Related Articles Your Company:. Fax Number:.

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New posts. Search forums. Log in. Install the app. For a better experience, please enable JavaScript in your browser before proceeding. The inner end of the plunger 54 is provided with a tapered plane surface 12 engageable with the inner end of the pin The plunger 54 may be propelled toward the left by rotating the knob 66 clockwise which; due to the threads 60 being lefthand, causes longitudinal movement of the plunger toward the left as to position of Figure 5.

Obviously this propels the pin 40 or the similar pin 40a shown in Figure 5 outwardly. When the sleeve 32 of less thickness is used there isn. The outer end of the pin 40a is. Referring to Figure 12] it will be noted that the sleeve 30 is provided with two-line contact surfaces 14; The pivoted element 36 or the rounded outer end of the'pin 40d serve as a third line: or.

In the event that there is no cap on. This still pro vides the two-line contact-at 14 with the portion of the connecting rod bearing in the rod itself so that the bearingis properly aligned with the arbor and accurate alignment checking thereby being possible.

In Figures 7 and 8 I show a modified arbor in whichthe arbor itself is indicated at A. The portion Gila may be a sleeve or may be integral with the stud as illustrated in Figure 8. In place of the. The outer surface of the head is rounded to serve as a third point of.

In Figures 9- and 10, a: modification is shownwhich. The arbor is indicated as A", its stud as 28b and its enlarged portion as30b. Opposite the two lines. Where only one. Practicdl operation r In the operation of mypis tonand-connecting rodaligner any form of the arbor may be;fixed. With the arbor of Figure 5 the pin 4 0a isengaged-with the cap while with the arbor of Figure 8 the set screw head 82 is engaged therewith.

In usingthe arbors of Figures 6 and lothe plate 16 is engaged with, the sleeve or enlargement 30 of the 'arb'or or the set screw 80a. After the'arbor is tightened in the bearing-the connecting rod and arbor are a unit that can be handled for checking alignment quickly on the rod aligner.

The arbor is seated in the open V-seats l6 and the piston 20 is engaged with the fixture F which fixture has indicating means for conveying to the operator information regarding whether the piston is aligned with the connecting rod or is out of alignment due to the connecting rod being bent or twisted.