B&M 10225 SHIFT IMPROVER KIT - Manual (Page 4)

Figure 6
Valve body screws
Valve body
screws
Transfer Plate
STEP 7. Valve Body Disassembly: (See Fig. 6) Remove
the valve body screws from transfer plate. There will be
fourteen of them, with either Phillips or slot heads. Hold the
casting and transfer plate together with one hand while
removing the last screw so you won’t lose any internal parts.
Carefully lift the transfer plate assembly off the casting to
expose the oil passages. Turn the transfer plate assembly
over so the separator plate is facing up and set it to your
right. Inspect your casting for the following: (See Fig. 7)
Figure 7
1/4” steel check
balls
spring and
check ball
“A”
11/32” steel
check ball
Large steel ball on a stiff spring underneath at
location 7 on early models. Remove the ball and
spring and discard.
Five ¼” diameter steel check balls in locations 1
thru 5 and one 11/32" diameter steel check ball in
location 6. (See Fig. 7) Remove these and place
them in the tray.
STEP 8.
Heavy Duty: Go to Step 9
Street/Strip: Remove five short screws and
remove the governor plug and plate. (See Fig 8)
Do not rotate the selector lever as you will
disengage the detent ball allowing it to fly out of
position. Remove the shuttle valve throttle plug.
Remove and discard the shuttle valve throttle
plug spring.
Install the shuttle valve throttle plug rod supplied with the kit
into the valve bore. Install the shuttle valve throttle plug into
its bore. The plug must be flush or slightly below the surface
of the casting to prevent leaks. Grind the rod down slightly
if necessary to provide clearance. Install the governor plug
end plate. You should be able to hold the plate flat against
the casting with thumb pressure only. If you cannot hold the
plate flat against the slight spring tension of the shift valves,
the rod is too long. Install five short screws finger tight only.
STEP 9. Remove three long screws and remove the limit
valve end plate and small casting (See Fig. 9). Hold your
hand on the end plate while removing the last screw so the
three small springs underneath do not fly out and get lost.
Install the ¼” steel ball supplied with the kit into the 1-2 shift
control valve bore inside the 1-2 shift control valve spring.
B&M RACING CHATSWORTH, CA www.bmracing.com
4/7
# 1 # 2
# 3
# 4
# 5
# 6 NOT FOUND IN
'71-'77 MODELS
CHECK BALL
LOCATIONS: