ACMOC
Login
ACMOC
Will a 7U Pto unit fit on a 78A?

Will a 7U Pto unit fit on a 78A?

Showing 1 to 2 of 2 results
Rd6 plower
Topic Author
Offline
Send a private message to Rd6 plower
Posts: 388
Thank you received: 0
They look the same but wonder if tail shaft is the same?
Please log in or create an account to join the conversation.
Mon, Feb 4, 2019 3:27 AM
Old Magnet
Offline
Send a private message to Old Magnet
Posts: 16,695
Thank you received: 17
My understanding is that all the D4 PTO's will interchange but I have not tried them all. Even though shaft part numbers are different between the 7U units and later 78A units it has to do with shaft changes within the gear box itself, otherwise length dimensions are the same and both use the same splined couplings. I do stand to be corrected, maybe you can verify.
Please log in or create an account to join the conversation.
Mon, Feb 4, 2019 5:29 AM
juiceman
Online
Member
Chapter Leader
Chapter Fifteen
Send a private message to juiceman
Posts: 3,262
Thank you received: 68
Reply to Old Magnet:
My understanding is that all the D4 PTO's will interchange but I have not tried them all. Even though shaft part numbers are different between the 7U units and later 78A units it has to do with shaft changes within the gear box itself, otherwise length dimensions are the same and both use the same splined couplings. I do stand to be corrected, maybe you can verify.
JR: I have a couple of spare PTOs if you happen to burn yours up and need replacement.
Please log in or create an account to join the conversation.
Mon, Feb 4, 2019 5:42 AM
Showing 1 to 2 of 2 results
YouTube Video Placeholder

Follow Us on Social Media

Our channel highlights machines from the earliest Holt and Best track-type tractors, equipment from the start of Caterpillar in 1925, up to units built in the mid-1960s.

Upcoming Events

Newby Hall Tractor Fest

Chapter Two

| Newby Hall, Ripon, Noth Yorkshire, HG4 5AJ

High Weald Steam Working Weekend

Chapter Two

| Freshfield Farm, Sloop Lane, Scaynes Hill RH17 7NP UK

Sibbertoft Annual Muck Shifting Weekend

Chapter Two

| Avalanche adventure, Welford Rd, Sibbertoft LE16 9UJ, UK

Cromford Steam Rally

Chapter Two

| Highacres Farm, Dewey Lane, Brackenfield, Derbyshire DE55 6DB, UK
View Calendar
ACMOC

Antique Caterpillar
Machinery Owners Club

1115 Madison St NE # 1117
Salem, OR 97301

[email protected]

Terms & Privacy
Website developed by AdCo

Testimonials

"I became a member recently because the wealth of knowledge here is priceless." 
-Chris R

Join Today!