Mazda Automatic Transaxle JA5A-EL. Manual — part 29
AUTOMATIC TRANSAXLE
K121
K1
1. Verify that there is no air leakage when applying compressed air through the oil hole opposite the return spring.
2. Verify that there is airflow when applying
compressed air through the oil hole on the return
spring side.
• Replace the coasting clutch piston if it is
damaged or malfunctioning.
Air pressure
390 kPa {4.0 kgf/cm
2
, 57 psi} max.
End Of Sie
REVERSE CLUTCH AND HIGH CLUTCH ASSEMBLY
AME571419500A04
Assembly Procedure
1. Apply a coat of ATF to new O-rings, then install
them to reverse and high clutch pistons.
2. Apply a coat of ATF to inside of reverse clutch
piston, then install the high clutch piston into the
reverse clutch piston while rotating the piston by
hand.
3. Apply a coat of ATF to inside of drum, then install
the reverse clutch piston into drum while rotating
the piston by hand.
Note
• After installing required parts to the piston,
ensure that the piston rotates smoothly by
hand. If not, the O-ring may be caught.
4. Install the return spring.
5. Install the spring retainer as follows.
(1) Position the spring retainer.
Caution
•••• Depress the spring retainer only enough to remove the snap ring. Overpressing will damage the
retainer component edges.
(2) Install the SSTs in clutch drum as shown.
(3) Install the snap ring.
(4) Remove the SSTs.
Caution
•••• Depress the spring retainer only enough
to install the snap ring. Overpressing will
damage the retainer component edges.
AMU0517A144
AMU0517A058
AMU0517A165
K122
AUTOMATIC TRANSAXLE
6. Install the plates and driven plates in the order as
shown in the figure.
7. Install the retaining plate.
8. Install the snap ring.
End Of Sie
LOW CLUTCH PREINSPECTION
AME571419500A05
Clutch Operation
1. Set the low clutch onto the transaxle case.
Warning
•••• Using compressed air can cause dirt and other particles to fly out, causing injury to the eyes.
Wear protective eye wear whenever using compressed air.
Caution
•••• Applying compressed air to the assembled clutch pack for longer than 3 seconds at a time will
damage the seal. Do not apply compressed air for more than the aforementioned time when
testing the system.
Note
• Regarding the position of the hole into which air is blown, refer to item Oil pressure circuit in this manual.
AMU0517A060
AMU0517A061
AUTOMATIC TRANSAXLE
K123
K1
2. Inspect the clutch operation by applying
compressed air through the fluid passages
shown.
• If not as specified, replace parts where
necessary.
Air pressure
390 kPa {4.0 kgf/cm
2
, 57 psi} max.
Clutch Clearance
1. Using a thickness gauge, measure clearance
between the retaining plate and the snap ring.
• If not as specified, replace parts where
necessary.
• If the specified clearance is exceeded,
replace all clutch plates with new ones. And
then, select a suitable retaining plate so that
the specified clearance is obtained.
Clearance:
1.11.3 mm {0.0440.051 in}
Retaining plate thickness
mm {in}
End Of Sie
AMU0517A073
3.8 {0.150}
3.9 {0.154}
4.0 {0.157}
4.1 {0.161}
4.2 {0.165}
4.3 {0.169}
4.4 {0.173}
4.5 {0.177}
4.6 {0.181}
AMU0517A074
K124
AUTOMATIC TRANSAXLE
LOW CLUTCH DISASSEMBLY
AME571419500A06
Snap Ring Disassembly Note
Caution
•••• Depress the spring retainer only enough to remove the snap ring. Overpressing will damage the
retainer component edges.
AMU0517A066
1
Snap ring
2
Retaining plate
3
Drive plate
4
Driven plate
5
Dished plate
6
Snap ring
(See
K124 Snap Ring Disassembly Note
7
O-ring
8
Cancel force cover
9
Return spring
10 Piston
(See
K125 Clutch Piston Disassembly Note
11 O-ring
12 Seal ring
13 Clutch drum
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