B&M 30262 SHIFT IMPROVER KIT - Manual (Page 2)

2
TURBO HYDRO 350
INTRODUCTION
This kit can be installed in a few hours by carefully
following directions. Read all instructions first to
familiarize yourself with the parts and procedures. Work
slowly and do not force any parts. Transmission
components and valves are precision fit parts. Burrs and
dirt are the number one enemies of an automatic
transmission. Cleanliness is very important so a clean
work area or bench is necessary. We suggest a clean
work bench top from which oil can easily be cleaned or a
large piece of cardboard.
This kit contains all parts necessary, to obtain two
levels of performance depending on intended use:
1. Heavy Duty: Towing, campers, motorhomes, police,
taxi, etc.
2. Street/Strip: Dual purpose performance vehicles.
Street and strip high performance cars, on and off-road
desert vehicles and 4-wheelers.
Automatic transmissions operate at temperatures
between 150° and 250°F. It is suggested that the vehicle
be allowed to cool for a few hours to avoid burns from
hot oil and parts. The vehicle should be off the ground
for ease of installation. Jack stands, wheel ramps or a
hoist will work fine. Make sure the vehicle is firmly
supported!! Try to raise it 1-2 feet so you have plenty of
room to work easily. Have a box or pan handy to put
small parts in so they won’t be lost. Also have a drain
pan to catch oil.
DISASSEMBLY
STEP 1. Some Turbo 350 transmissions do not have
drain plugs. You may want to install a B&M Pan Drain
Plug Kit #80250 at this time. Drain the oil by removing
the rear oil pan bolts and work towards the front slowly.
(Note: Some vehicles will require removal of the cross
member to remove the pan. Make sure you support the
back of the transmission so you don’t damage the
distributor.) Do not remove the front two pan bolts yet. If
the pan sticks to the gasket, insert a screwdriver between
the pan and case and pry the pan down slightly to break
it loose. Now remove the two front bolts slowly. This will
lower the pan to allow the rest of the fluid to drain. Lower
the pan and set it aside. Put the pan bolts in your tray.
STEP 2. Use a screwdriver to remove two screws and
remove the oil filter and filter gasket. Put them in the oil
pan. (See Fig. 1)
STEP 3. Observe the location of the following: (See Fig.
2) Manual linkage, detent spring and roller, S-link or offset
link, detent control valve wire and lever, and support plate.
STEP 4. Remove pivot clip holding detent control valve
lever in place. (See Fig. 3) Remove lever also and set
them in the tray. Remove eighteen valve body attaching
bolts. (See Fig. 2) Leave drain pan positioned as there is
still oil between valve body and separator plate. Remove
valve body by pulling straight down and disengaging
manual valve and link from manual lever. (Do not let
manual valve fall out of valve body.) Put the valve body
in the oil pan.
STEP 5. Remove support plate bolts and support plate.
(See Fig. 2) Remove stock separator plate, gaskets and
four check balls. You will not reuse your stock separator
plate. Leave drain pan positioned is there as still oil
between separator plate and case. Check balls are
between the plate and case. If front servo assembly falls
out install it back in position with grease to retain it. Order
of assembly is: spring, retainer, pin, washer and piston.
See Fig. 5A,
STEP 6. Scrape off any excess gasket material that may
be stuck to the valve body. This is very important as stray
gasket material can cause leaks. Wash valve body in
FIGURE 1
FIGURE 2