02-18-2022, 05:55 AM
The mounting brackets for the AD 9 have different spacing than the Brakemaster unit . I drilled holes in the lower mount to suit the original treaded holes in bulkhead . Welded a piece with correct hole spacing to the top mount .
I replaced the steel braided hose from compressor to dryer with a longer one (# 12 , 33") to eliminate a section of pipe and fitting that was on old dryer .
However , I think the original will fit .
The line to governor is 1/4 npt , both units .
The discharge on original dryer is at the top , your AD 9 will be at the bottom , so the existing hose won't reach if like mine . The hose is DOT , 5/8 . I added a new section of hose using a DOT coupler . The AD 9 has 1/2 npt discharge , I used 90 degree DOT fitting to fit the hose .
I would be interested to know if your model has any plumbing from the purge discharge . My Brakemaster had a copper tube plumbed to the purge and routed to the muffler . I do not believe this was original .
Let me know if you need more information.
Chris
I replaced the steel braided hose from compressor to dryer with a longer one (# 12 , 33") to eliminate a section of pipe and fitting that was on old dryer .
However , I think the original will fit .
The line to governor is 1/4 npt , both units .
The discharge on original dryer is at the top , your AD 9 will be at the bottom , so the existing hose won't reach if like mine . The hose is DOT , 5/8 . I added a new section of hose using a DOT coupler . The AD 9 has 1/2 npt discharge , I used 90 degree DOT fitting to fit the hose .
I would be interested to know if your model has any plumbing from the purge discharge . My Brakemaster had a copper tube plumbed to the purge and routed to the muffler . I do not believe this was original .
Let me know if you need more information.
Chris
1986 #89
VIN 007
Detroit 8V92 TA 475 HP
Allison four speed
Chris and Sharon Hand