Bm 70226 TRANSKIT FOR GM 4L80E TRANSMISSION Manual de usuario descargar pdf

Installation Instructions

1991+ GM 4L80E Transpak Kit

Part Number 70376

9500865-00

Printed in the U.S.A.

Gasket, Case to

Spacer Plate

Gasket, Valve Body to

Spacer Plate

Gasket, Accumulator

Housing

Drill (5/64, 3/32, #32)

3/8” X 5/16” ID (red)

Spacer

1/2”L x 51/4” ID

(orange) Spacer

1/2”L x 5/16”ID (green)

Spacer

3/8”L x 1/4”ID (white)

Spacer

Press Control

Solenoid Filter

Press Regulator

(red) & 3rd

Accumulator (blue)

springs

TCC

Solenoid Filter

Shifter

Solenoid Filter

Oil Filter with

Seal

Press Regulator

Retaining Ring

Thank you for choosing B&M, The per-

formance company with over 50 years

experience designing and manufac-

turing quality high performance auto-

motive driveline components.

Before proceeding with the installa-

tion please read all of the B&M 4L80E

Transpak Kit installation instructions

so you will be familiar with the series

of steps required to install this kit. For

other service information on your

4L80E transmission consult the ap-

propriate factory service manual for

your vehicle.

Important Note: Since mid 1992 pro-

duction the 4L80E has been as-

sembled with a heavy duty reusable

oil pan gasket. If your pan gasket is

damaged or you have a 1991 or early

‘92 transmission, you will have to pur-

chase a replacement oil pan gasket at

your parts supplier. An Oil Pan Gas-

ket IS NOT supplied with this kit.

The B&M 4L80E Transpak Kit me-

chanically recalibrates your transmis-

sion to produce firm positive shifts, this

helps reduce clutch pack heat build up

and improves transmission durability.

This kit does not change or modify shift

point RPM in any range. All transmis-

sion shift point RPM and pressure con-

trol functions remain under full PCM

(Powertrain Control Module) control as

they were originally.

No recalibration kit can fix an already

ailing transmission. If your 4L80E is

slipping, overheating, shifting irregularly

or making noise, you should have it

repaired before or, in conjunction with

the installation of your B&M 4L80E

Shift Improver Kit.

GENERAL 4L80E INFORMATION

B&M’s 4L80E Transpak Kit was de-

signed to provide firm positive shift

quality and improve transmission du-

rability in original vehicle installations,

especially those with moderate engine

power improvements. This kit was not

designed for and is not suitable for all

out racing applications.

Your 4L80E Transmission is controlled

by the PCM which has full control of

the 4L80E’s operation. All of the pa-

rameters that control fluid pressures,

shift point RPM and TCC (Torque Con-

verter Clutch) Iockup speed have been

preprogramed into the PCM at the

Parts in Kit

Boost Valve Kit

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1 - Installation Instructions

Pagina 2

Pagina 3

Pagina 4

12NOTE: Complement your B&M Transpak Kit with some of the following products. Check the B&M website atwww.bmracing.com for various options:B&

Pagina 5

2recommend B&M Trick Shift ATF.SPECIAL INSTRUCTIONSChoose a clean, dirt and dust freeplace to work on your 4L80E. Dirt,loose threads from rags

Pagina 6

3Be careful with the internal and exter-nal wiring harness. Wiring and/or con-nectors are easily damaged and diffi-cult to troubleshoot if they are da

Pagina 7

4PressureRegulatorBoreOil Filter PickupTube SealDetent SpringPressure SwitchAssemblyDetent Lever PinManual ValveDip StickStopLube PipeEarly model unit

Pagina 8 - ATF for High Performance

5which connectors go to which solenoid(See Fig. 1). Pay particular attentionto the location of the cable clamps anddipstick stop bracket. Notice how t

Pagina 9

6reinstall the piston.STEP 13. Heavy Duty and High Per-formance Street levels: Replace thestock 3rd Accumulator Spring with theBLUE 3rd Accumulator

Pagina 10

7Valve Body To Spacer Plate GasketVBAccumulator Housing GasketSpacer Plate To Case GasketTCFigure 5: Spacer Plate GasketsPCS FilterYou may have toloo

Pagina 11

81991-1993 AccumulatorHousing shownUse petroleum jelly to hold theCheck Balls in place.DO NOT use grease.Install Check BallsEITHER on Spacer plateOR i

Pagina 12

9ERROR CONDITION WHERE TO LOOK FOR CAUSEHigh or Low Oil Pressure Oil Pump - Pressure Regulator Valve Stuck.- P/R Retainnig Ring not fully seated