Engine - Ticking Noise

91audi03

Group: 13

Number: 91-01

Date: January 31, 1991


Subject: Engine ticking noises at 1800-3200 RPM


Model(s): 4000 (eng. code MG w/auto. trans.) 1985-1987 m.y.
80/90 (eng. code 3A w/auto. trans.) 1988-06/90 m.y.


Condition:

Minor metallic ticking noises in engine between 1800-3200 RPM caused by design tolerances of piston pins/connecting rod bearings.

Production Solution:

Introduction of two-piece flexible drive plate

As of: 06/90 VIN 8A_LA279402 engine code 3A (4-cyl) only

Service Solution:

Replace original solid drive plate with two-piece flexible drive plate.

Parts required

Description Part Number Quantity

Two-piece flexible
drive plate 053 105 323 G 1
4.0 mm spacer 053 105 301 A 1
1.0 mm shims 056 105 303 2
Torque converter
bolts 087 323 699 3
Locking compound D 000 600 1

Note

Zone/DSM approval is required before performing this repair


CAUTION

Part numbers are for reference only. Always check with your Parts Department for latest information.


CAUTION

Before removing transmission, set engine to TDC. This ensures alignment of the drive plate to the transmission.





^ remove transmission, torque converter and drive plate (see Repair Manual Group 13).

^ install two-piece flexible drive plate

^ install 4.0 mm spacer A between crankshaft flange and drive plate

^ install 1.0 mm spacer B as shown





^ with new drive plate, using old bolts, measure distance a

a = 31.3 +/- 0.7 mm (1.2 +/- 0.03 in.)

if NO

^ install an additional 1.0 mm shim between drive plate and spacer A to achieve dimension (as shown)

^ remove drive plate and old mounting bolts

^ reinstall new drive plate with new mounting bolts C, using locking compound D 000 600 or equivalent

^ torque 100 N-m (74 ft.lb.)

^ set engine to TDC

^ using NEW torque converter bolts, reinstall torque converter and transmission

^ hand tighten torque converter bolts only

^ ensure torque converter and drive plate are aligned

^ fully tighten torque converter bolts

^ torque 30 N-m (22 ft.lb.)

Note
new bolts are shorter in length than original reinstall all other components in reverse order of removal

Note
On vehicles built prior to April 1988, VIN: 89_JA355106 it will no longer be necessary to install the cross drilled crankshaft conversion kit.