Isuzu KB P190. Manual — part 987

Automatic Transmission – 4L60E – On-vehicle Servicing

Page 7C4–35

3.15 Spacer Plate, Check Balls, Filter Screens

and 3 – 4 Accumulator

Remove

1

Remove the control valve body, refer to 3.14

Control Valve Body.

2

Remove the three attaching bolts (1) and the plate (2)
supporting the spacer plate.

Figure 7C4 – 47

The 3 – 4 accumulator spring (1) may push
the spacer plate away from transmission
case when the 1 – 2 accumulator assembly is
removed.

3

While supporting the spacer plate (2), carefully remove
the 1 – 2 accumulator assembly (3), refer to
3.12

1 – 2 Accumulator Assembly.

As the spacer plate and gaskets are lowered
from the transmission, a check ball and the
3 – 4 accumulator spring may drop. Do not
lose the check ball and the spring.

4

Remove the two gaskets (4 and 5) and the spacer
plate from the transmission case.

Figure 7C4 – 48

Automatic Transmission – 4L60E – On-vehicle Servicing

Page 7C4–36

5

If not previously dropped, remove the spring (1).
If required, use snap ring pliers to rotate and pull the
3 – 4 accumulator piston (2) to remove it from the
transmission case. Remove and discard the piston
seal.

Figure 7C4 – 49

6

Remove the check-ball (1) if not previously dropped.
Remove the 3rd accumulator check ball assembly (2),
the orifice cup plug (3) and the guide pins (A) from the
transmission case.

Figure 7C4 – 50

Clean and Inspect

To avoid personal injury, wear safety glasses
and gloves when using compressed air and
cleaning fluids.

1

Wash all components in a commercially available cleaning fluid and blow dry using compressed air.

2

Inspect the components for the following:

•

piston for porosity,

•

ring groove or pin hole damage,

•

spring for distortion or damage,

•

accumulator bore for wear or damage and

•

spacer plate, filter screens and check balls for damage.

Automatic Transmission – 4L60E – On-vehicle Servicing

Page 7C4–37

Reinstall

1

Lubricate a new seal (1) with petroleum jelly and install
it to the 3 – 4 accumulator piston (2).

2

Reinstall the piston onto the pin (3). The piston side
with the three lugs (4) must face out of the bore.

3

Reinstall the 3 – 4 accumulator spring, use a small
amount of petroleum jelly to hold it in place, as
needed.

Figure 7C4 – 51

Ensure the guide pins are fully installed with
no thread visible. Otherwise the spacer plate
gasket could be caught in the thread during
installation, resulting in incorrect alignment.

4

Reinstall the guide pins (A) at the correct locations in
the transmission case.

5

Reinstall the check ball (1) in the transmission case
using a small amount of petroleum jelly to hold it in
place.

6

Reinstall the 3rd accumulator check ball assembly (2)
and the orifice cup plug (3) in the transmission case.

Figure 7C4 – 52

Automatic Transmission – 4L60E – On-vehicle Servicing

Page 7C4–38

7

If a new spacer plate (1) is installed, it is necessary to
fit two filter screens (2 and 3) to the spacer plate.

Figure 7C4 – 53

N O T E

When installing the spacer plate locate the
gaskets as follows:

• The gasket (2) marked CA is fitted between

the spacer plate and the transmission case.

• The gasket (3) marked VB is fitted between

the spacer plate and the control valve body.

8

Reinstall the spacer plate (1) with the new
gaskets (2 and 3) smeared with petroleum jelly. Hold
the spacer plate in place until the 1 – 2 accumulator is
reinstalled.

9

While supporting the spacer plate, carefully reinstall
the 1 – 2 accumulator assembly (4), refer to
3.12

1 – 2 Accumulator Assembly.

Figure 7C4 – 54