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-   -   Allison speedometer gear/provisions? (https://www.wanderlodgeownersgroup.com/forums/showthread.php?t=33114)

badandy 01-16-2019 09:16 AM

Allison speedometer gear/provisions?
 
I believe I have an MT654 in my bus. Does it have a provision for a speedometer gear on the tail housing? It would appear so, but my Google-** is more ** today. I know my speedometer doesn't run from there, this is for something else. :D

Dieselbird01 01-16-2019 03:39 PM

Quote:

Originally Posted by badandy (Post 440224)
I believe I have an MT654 in my bus. Does it have a provision for a speedometer gear on the tail housing? It would appear so, but my Google-** is more ** today. I know my speedometer doesn't run from there, this is for something else. :D

According to this it looks like it should at least have a provision:

Allison Transmission Mechanic’s Tips
MT 640, MT 643, MTB 643(R),
MT 644, MT 647, MTB 647,
MT 650, MT 653DR, MTB 653DR,
MT 654CR, MTB 654CR

5–12. CONNECTING SPEEDOMETER DRIVE

• Install the speedometer driven gear assembly into the transmission. Tighten the body in the transmission rear cover to 45–50 lb ft (61–68 N·m). If no speedometer drive is provided, be sure a steel plug is installed to close the hole in the housing (torque is the same as for the driven gear body). Do not operate transmission with the plastic shipping plug in this hole.

• Install the speedometer drive cable onto the driven gear assembly. Tighten the cable nut to 50–55 lb in. (5.6–6.2 N·m). Avoid sharp bends in the cable. All bends must have a radius of at least 6 inches (152 mm) and no more than one 90 degree bend is allowed. The torque required to drive the cable and all associated equipment should not exceed 25 oz in. (0.17 N·m).

Mike Hohnstein 01-16-2019 04:05 PM

Notched brake drum, probably curb side.

badandy 01-16-2019 04:05 PM

Thanks John! You don't happen to have any part numbers for the gear and threaded adapter do you? I've seen some Stewart Warner units that seem to have the gear and housing in one assembly that slips in.

badandy 01-16-2019 04:19 PM

Quote:

Originally Posted by Mike Hohnstein (Post 440256)
Notched brake drum, probably curb side.

Ya don't say. How will that squeeze into the tail housing?

Dieselbird01 01-17-2019 05:09 PM

Quote:

Originally Posted by badandy (Post 440257)
Thanks John! You don't happen to have any part numbers for the gear and threaded adapter do you? I've seen some Stewart Warner units that seem to have the gear and housing in one assembly that slips in.

I don't have part numbers for the gear and threaded adapter.

Our resident transmission expert Mike Hohnstein might offer to help... if he doesn't read your last post. :p


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