Low And Reverse Brake

REPAIR FOR COMPONENT PARTS


Low and Reverse Brake


COMPONENTS






DISASSEMBLY
1. Check operation of low and reverse brake.





a. Apply compressed air into oil hole of transaxle case at the location as shown.
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring:
- D-ring might be damaged.
- Seal lip might be damaged.





2. Remove snap ring (1) using a suitable tool (A).
3. Remove retaining plates, drive plates, driven plates, dish plates.





4. Set Tool (A) on spring retainer assembly, and remove snap ring from transaxle case while compressing spring retainer assembly.

Tool number A: KV31103200 (J-39186)

CAUTION:
Set Tool directly over return springs.
5. Remove spring retainer assembly from transaxle case.

CAUTION:
Do not remove return springs from spring retainer.
6. Apply compressed air into the oil hole on transaxle case as shown in the figure to raise piston while strongly pressing the whole low and reverse brake piston by hand. When applying compressed air, strongly press the whole piston and adjust the pressure so that it is raised evenly. Portion (A) (low and reverse brake pressure) especially tends to tilt.

CAUTION:
Apply air gradually and allow low and reverse brake piston to come out evenly.
7. Remove low and reverse brake piston from transaxle case by turning it.
8. Inspect transaxle case. Replace if damaged or worn.





9. Remove seal lip (1) and D-ring (2) from low and reverse brake piston (3).

INSPECTION

Low and Reverse Brake Snap Rings
Check for deformation, fatigue or damage. Replace if necessary.






Low and Reverse Brake Drive Plates
- Check facing for burns, cracks or damage. Replace if necessary.
- Measure thickness of facing.






Thickness of drive plate Standard and allowable limit: Refer to Clutches And Brakes.

CAUTION:
- Measure the thickness at 3 locations and find the average.
- Inspect all drive plates.
- Replace if the thickness is below the allowable limit.

Low and Reverse Brake Dish Plates
- Check for deformation or damage.





- Measure thickness (t) of dish plate. Replace if damaged, deformed or worn.

Thickness of dish plate (t) : 2.93 mm (0.1154 in)

Low and Reverse Brake Spring Retainer Assembly
Check length (L) of spring retainer assembly. Replace if damaged, deformed or worn.






Length (L) : 26.3 mm (1.035 in)

CAUTION:
Do not remove return springs (A) from spring retainer (B)

ASSEMBLY
1. Install seal lip (1) and D-ring (2) on low and reverse brake piston (3).






2. Install low and reverse brake piston in transaxle case while turning it.






CAUTION:
Apply ATF to inner surface of transaxle case.
3. Install spring retainer assembly (1) on low and reverse brake piston (2).





4. Set Tool (A) on spring retainer assembly, and install snap ring while compressing spring retainer assembly.

Tool number A: KV31103200 (J-39186)






CAUTION:
Set SST directly over return springs.
5. Install driven plates, dish plates, retaining plates and drive plates.





- HR16DE engine models
(1): Snap ring
(2): Retaining plate
(3): Drive plate
(4): Driven plate
(5): Retaining plate
(6): Dish plate
Drive plate/Driven plate: 4/4

CAUTION:
Be careful with the order of plates





- MR18DE engine models
(1): Snap ring
(2): Retaining plate
(3): Drive plate
(4): Driven plate
(5): Retaining plate
(6): Dish plate
Drive plate/Driven plate: 5/5

CAUTION:
Be careful with the order of plates

NOTE:
Install two dish plates fitting each installation direction with groove displaced slightly.





6. Install snap ring (1) using a suitable tool (A).
7. Measure clearance between retaining plate and snap ring. If not within allowable limit, select proper retaining plate (front side). Refer to "Parts Information" for retaining plate selection.






Specified clearance Standard and allowable limit: Refer to Clutches And Brakes.






8. Check operation of low and reverse brake. Refer to "DISASSEMBLY".