Flex Plate: Service and Repair

Drive Plate And Ring Gear Assembly

Drive plate and ring gear assembly - remove - Up to engine nos. 42D00593A and 46D00450A
1. Suitably identify each component to its fitted position.







NOTE: 4.0 litre drive plate illustrated.

2. Remove 4 bolts securing drive plate assembly.
3. Remove buttress ring and drive plate assembly.

NOTE: Drive plate assembly is dowel located.

4. Remove 6 socket head cap screws securing hub aligner to crankshaft, remove hub aligner and selective shim; retain shim.

NOTE: Dowel located.

Drive plate and ring gear assembly - remove - From engine nos. 42D00594A, 46D00451A and all engines having serial no. prefixes 47D to 51D
1. Suitably identify each component to its fitted position.







NOTE: 4.0 litre drive plate illustrated.

2. Remove 4 bolts securing buttress ring, drive plate, spacer and ring gear assembly to hub aligner.
3. Remove buttress ring, drive plate, spacer and ring gear assembly.

NOTE: Ring gear assembly is dowel located.

4. Remove 6 socket head cap screws securing hub aligner to crankshaft, remove hub aligner.

NOTE: Dowel located.

Drive plate and ring gear - inspection
1. Inspect drive plate for cracks and distortion.
2. Renew drive plate if necessary.
3. Inspect ring gear for worn, chipped and broken teeth.
4. Renew ring gear assembly if necessary.

Drive plate and ring gear assembly - refit - Up to engine nos. 42D00593A and 46D00450A

CAUTION: To prevent distortion to drive plate when bolted to torque converter, drive plate setting height must be checked as follows:







1. Fit original selective shim and hub aligner, fit socket head cap screws and tighten to 85 Nm (63 ft. lbs.).
2. Fit drive plate assembly and buttress ring ensuring that reference marks are aligned; fit bolts and tighten to 45 Nm (33 ft. lbs.).

CAUTION: If a new drive plate assembly is being fitted, paint mark on plate must face towards torque converter.

3. Check the setting height A.
Up to engine no. 42D00593A = 21.25 to 21.37 mm (0.83 to 0.84 in)
Up to engine no. 46D00450A = 7.69 to 7.81 mm (0.30 to 0.31 in)

4. If setting height is not as specified, remove buttress ring, drive plate assembly, hub aligner and selective shim.
5. Measure existing shim and, if necessary, select appropriate shim to achieve setting height. Shims available:
1.20 - 1.25mm (0.048 to 0.050 in)
1.30 - 1.35mm (0.051 to 0.053 in)
1.40 - 1.45mm (0.055 to 0.057 in)
1.50 - 1.55mm (0.059 to 0.061 in)
1.60 - 1.65mm (0.063 to 0.065 in)
1.70 - 1.75mm (0.067 to 0.070 in)
1.80 - 1.85mm (0.071 to 0.073 in)
1.90 - 1.95mm (0.075 to 0.077 in)
2.00 - 2.05mm (0.079 to 0.081 in)
2.10 - 2.15mm (0.083 to 0.085 in)

6. Fit shim selected, fit hub aligner; fit socket head cap screws and tighten to 85 Nm (63 ft. lbs.).
7. Fit drive plate assembly and buttress ring ensuring that reference marks are aligned or that paint mark on replacement drive plate is facing towards torque converter.
8. Fit bolts and tighten to 45 Nm (33 ft. lbs.).

Drive plate and ring gear assembly - refit - From engine nos. 42D00594A, 46D00451A and all engines having serial no. prefixes 47D to 51D

NOTE: It is not necessary to check setting height on drive plates fitted to engines from the above numbers.

1. Fit hub aligner, fit socket head cap screws and tighten to 85 Nm (63 ft. lbs.).
2. Fit ring gear assembly, spacer, drive plate and buttress ring ensuring that reference marks are aligned.

CAUTION: If a new drive plate is being fitted, paint mark must face towards torque converter, ensure holes in plate are aligned with clearance holes in ring gear.

3. Fit bolts and tighten to 45 Nm (33 ft. lbs.).