Transmission Temporarily Would Not Go In Gear

[Leroy A. Eckert]

Today I took the coach to get some fuel. Every thing was normal. When I went to
leave the station I started the bus and everything was normal. When I selected D
on the shift pad nothing happened. It would not shift to any gear out of
neutral. I shut it off and let it sit for 5 minutes deciding what to do.
Restarted and all is well. I wonder if it will happen again. Scratching my head
on this deal.
HT-755 Allison 5 speed electric retarder. I do not have any drawings for the
tranny system or the key pad. Anyone know how it works when it works properly.
Relays, computer board?????

Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA
Royale Conversion