New to site. Serial number location for D-4 cat. with HT4 traxcavator unit

Hi Davh.
Welkum too ther 4um.

On the rear left of the steering clutch case. A D4 7U manual should give you most of what you want but there are some 'SUBTLE' differences between the 7U and the tractor in the HT4 too. Others will chime in here with more detailed info..

Just my 0.02.

Hi Davh.
Welkum too ther 4um.

On the rear left of the steering clutch case. A D4 7U manual should give you most of what you want but there are some 'SUBTLE' differences between the 7U and the tractor in the HT4 too. Others will chime in here with more detailed info..

Just my 0.02.

There is no separate service manual for the HT4. It uses a combination of the D4 Service Manual, Operators Manual and Parts Manual plus the HT4 loader manual that you have discovered.
Here's the s/n tag locations.

Thanks so much! Needing the manual and serial to find year of machine and info on the pony motor. No fire to plugs and someone broke the electric starter casing and need to find the right starter for it.

Thanks again! davh

Forgot one.
Same arrangement of manuals - service-operation-parts manuals for the #44 hydraulic system also. S/n is on the tank in a location you can't hardly get to on the HT4.

So far, no one has taken on the project of scanning all the manuals and making them available online. They are mostly still available from CAT through their reprint service or some of the other, usually lower quality reproductions like Jensales.

Soon as I can locate the serial number for the D4 and the engine serial number I need to get a service manual. Any thoughts on what is the best manual or most complete for repair?

the 2 yellow books r what u need, 1 is 4 the engines and the other is 4 the chassis. then u need the operators & instruction manual, then probably the 44 hydraulic book, and 4 sure the parts 4 your s/n range. 5 in total. get serial number 4 correct parts book. i think i got the seldom seen parts book 4 the ht4 loader. u won't really need it though. go to ebay 4 books, try not 2 pay more than 20.00 each 4 them. not more than 10.00 4 parts book. heres some info about starter bendix housing. good luck.

http://www.acmoc.org/bb/showthread.php?22850-Starter-Drive-Housing-for-D4-Electric-Pony-Starter-Motor