Service manual revisions

Removal of the suction line is referred to in the "Servicemen's Reference Book" for the D4, Form #30521-2 printed 1957.
Although it states to remove the suction line before removing the clutch it does not warn about the bolt holding the suction bell. This step is often overlooked resulting in the damaged line thus making it very difficult to find replacements.

Was Form 30521-2 the last version for the 7U series? I saw some forms with the numbers 30522-02 and FEO30521-2.

FEO30521-2 would be a Final Edition of the D4 Service Manual.
30522-2 is the second edition of the Diesel Engine 4-1/2 bore 4-cyl.

Also for future reference if anyone comes across this thread. The tube that I broke Cat PN 4H-4858 / 4H4858 is no longer available from Cat. I guess I will have the machine shop make it.

Have you tried Florin Tractor in Sacramento?

Thank you so much for your help! I found an additional manual with form number SENR4694. Have you heard of that one? Do you know what the final edition of the engine service manual form number would be?

If that was mine I would braze the pieces back together with no worries.

i was thinking of that possibility too Gary...brazing is not one of my skills but properly done it might be a done deal...