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ManualsBrandsB&M ManualsAutomotive35265 Shift Improver Kit Automatic Transmission Shift Kit

Installation Instructions

Shift Improver Kit for 1981-90

THM200-4R Transmission

Part No. 35265

Congratulations! You have just pur-

chased the most complete and versa-

tile recalibration kit available for the TH-

200-4R transmission. We have endeav-

ored to make the installation instruc-

tions on the following pages as clear

and complete as possible. Installation

of your Shift Improver Kit can be accom-

plished by anyone with minimum me-

chanical experience. It is important

however to closely follow the instruc-

tions. Read through the instructions

completely before beginning the

installation. Read each step carefully

before proceeding, if you do not under-

stand, go back and read the step again.

NOTE: This Shift Improver Kit is not a

cure-all for an ailing transmission. If

your transmission is slipping or in poor

general shape, the installation of this

Shift Improver Kit may worsen the con-

dition. However on a properly operating

transmission in average condition, the

Shift Improver Kit will provide the kind of

transmission performance your looking

for. Check the tool list at the end of

these instructions for the tools re-

quired to install your Shift Improver

Kit.

INTRODUCTION

This kit can be installed in a few

hours by carefully following the instruc-

tions. Read all instructions first to

familiarize yourself with the parts

and procedures. Transmission com-

ponents are precision fit, work slowly

and do not force any parts. Burrs and

dirt are the number one enemies of an

automatic transmission. Cleanliness

is very important, so a clean work

surface from which oil can easily be

removed is necessary.

This kit contains all parts neces-

sary to obtain two different levels of

performance, depending on intended

use:

1. Heavy Duty; For passenger vehicles,

towing, police, taxi, or any other heavy

duty use. Firm shift feel, perfect for

every day street use.

2. Street; For full performance street

use. Street level produces firm positive

shifts and maximum transmission

torque capacity.

It is important to install either the

heavy duty or street levels. Do not mix

modifications from different levels.

When installing your Shift Improver

Kit there are several other B&M prod-

ucts you may wish to consider:

DRAIN PLUG KIT 80250: TH-200-4R

transmissions are not factory equipped

with a drain plug. The B&M Drain plug

kit is inexpensive and easy to install

and it helps eliminate the mess during

fluid change or pan removal.

TRANSMISSION OIL COOLER: We

feel that it is very important that every

vehicle used in a heavy duty application

(Towing,RV, Commercial, Police, etc.)

should have an oil cooler. Heat is the

major causes of transmission failures,

and an oil cooler is an inexpensive

safeguard against overheating and fail-

ure. B&M offers a wide range of trans-

mission coolers to suit every need,

which are available at your B&M dealer.

TEMPERATURE GAGE KIT: 80212

Most transmission and converter fail-

ures can be traced directly to exces-

sive heat. The B&M transmission tem-

perature gage can save you a costly

repair bill by warning you ahead of time

of an overheated transmission. The B&M

temperature gage is extremely accu-

rate and dependable, it comes with all

necessary hardware and is easy to

install.

DISASSEMBLY

Automatic transmissions normally

operate at temperatures between 150

and 250 degrees Fahrenheit. We sug-

gest the vehicle be allowed to cool for

several hours before disassembly to

avoid burns from hot oil and parts.

The vehicle should be raised so there is

at least two feet ground clearance for

9500536-01

Printed in U.S.A.

Summary of content (8 pages)

PAGE 1
Installation Instructions Shift Improver Kit for 1981-90 THM200-4R Transmission Part No. 35265 © B&M Racing & Performance Products 1999 Congratulations! You have just purchased the most complete and versatile recalibration kit available for the TH200-4R transmission. We have endeavored to make the installation instructions on the following pages as clear and complete as possible. Installation of your Shift Improver Kit can be accomplished by anyone with minimum mechanical experience.
PAGE 2
Manual link Pressure regulator bore D 1-2 accumulator plate Signal pipe Electrical connector D Oil filter bore D D C C A C C B C converter solenoid B C C C B C C C Governor cover 1-2 accumulator housing D Bolt Lengths: T.V. lever & bracket Do not block hole (servo exhaust) Fig. 1. Valve body and accumulator installed. T.V. exhaust check ball lifter rod T.V. lever and bracket assembly T.V. Cable link Fig. 2. T.V. Lever and Bracket. 2 A. B. C. D. (1) (3) (11) (5) 15.5 30.0 45.
PAGE 3
Make sure manual link is installed as shown Pressure regulator bore: Make sure retaining ring is fully seated in groove tor housing and plate while holding the separator plate up to the case. Then slowly lower the separator plate and retrieve the (8) check balls located above the plate. IMPORTANT: Make note of the color, size and location of the 1-2 and 3-4 accumulator springs for correct reassembly. Remove all old gasket material from these parts. MODIFICATIONS IFig. 3. Pressure Regulator Bore.
PAGE 4
Drill 3/32" (.094") Drill 5/64" (.078") Heavy duty: Drill 5/64" (.078") Street only: Drill 3/32" (.094") Drill 5/64" (.078") Fig. 5. Drill Seperator Plate. Recess on plug faces out Street level only: Replace line bias spring with red spring from kit Install checkball in 3 places marked Fig. 6. Valve Body Checkball Placement.
PAGE 5
into the bore then install the valve, aluminum plug, and roll pin in reverse order of removal. Important: Do Not dry or wipe parts with cloth rags because the lint and loose threads can contaminate the transmission fluid and result in jambed pressure regulator and shift valves. Clean valve body and separator plate with clean solvent and air dry. ASSEMBLY Place ckeckballs in the 8 locations marked 3-4 accumulator Fig. 7. Case Checkball Placement. Valve body gasket Case gasket Fig. 8.
PAGE 6
3-4 Accumulator Piston Note: Some transmissions come with the 34 accumulator springs installed above the piston. You should reinstall the spring as shown here. Fig. 9. Heavy Duty Level Accumulator Assembly Order. Install gasket, piston, spring and 1-2 accumulator housing in reverse order of removal. Tighten bolts finger tight (See Fig. 9.) STEP 15. Street Level Only; Remove the spring and piston from the 1-2 accumulator housing (See Fig. 10.) and install the Blue (3/4") spacer over the guide pin.
PAGE 7
T.V. Cable Resetting Procedure Fig. 11. T.V. Cable Adjustment Procedure. incorrectly installed components. If the transmission makes unusual noise or feels as if it is binding up, turn off the engine immediately. Go back and recheck the entire installation. If the problem is shift quality (slipping, hard, early, late) then do the following: 1. Check transmission oil level. 2. Check and adjust T.V. Cable. 3. Check outside manual shift linkage.
PAGE 8
TH200-4R TRANSMISSION OIL PRESSURE * RANGE OIL PRESSURE AT MINIMUM T.V. OIL PRESSURE AT FULL T.V. kPa PSI kPa PSI PARK & NEUTRAL @ 1000 RPM 517 75 758 110 REVERSE @ 1000 RPM 634 92 1380 200 DRIVE (D4) & MANUAL THIRD (D3) @ 1000 RPM 517 75 758 110 MANUAL SECOND (D2) & LOW (D1) @ 1000 RPM 772 112 772 112 * DUE TO THE LARGE VARIETY OF PRESSURE REGULATOR COMPONENTS USED IN DIFFERENT PRODUCTION MODELS OF THE TH200-4R TRANSMISSION THE OIL PRESSURES LISTED ABOVE ARE MINIMUM VALUES.