A/T - High Pitch Whine From Output Shaft
87nissan06Maxima, Stanza
Models & Stanza Wagon
Section Automatic Transmission
Classification AT87-004
Bulletin No. TS87-084
Date May 18, 1987
AUTOMATIC TRANSAXLE GEAR WHINE
This bulletin supersedes
Technical Bulletin TM85-006A (TS85-033A) with new part numbers and additional models.
APPLIED MODEL: 1985-1987 Maxima (U11), 1987 Stanza (T12) and 1986-1987 Stanza Wagon (M10)
SERVICE INFORMATION
Some of the Applied Model vehicles equipped with automatic transaxles may exhibit a high pitch whine noise from the A/T output shaft at speeds between 25 and 65 mph. Use the following Service Procedures and Parts Information to reduce this noise.
Maxima Vehicles: Adjust the mass damper on the speedometer cable (analog instruments only) as described in Service Procedure A. If this does not reduce the noise to the satisfaction of the customer, replace the output gear and idler gear with a new matched gear set as described in Service Procedure B.
Stanza Vehicles: Replace the output gear and idler gear with a new matched set as described in Service Procedure B.
Stanza Wagon Vehicles Built Before 11/85: Replace the output gear, idler gear and side cover with a new matched set as described in Service Procedure B.
Stanza Wagon Vehicles Built 11/85 And After: Replace the output gear and idler gear with a new matched set as described in Service Procedure B.
SERVICE PROCEDURE A - Maxima Vehicles Only
1. Loosen the clamp bolt of the mass damper.
2. Slide the mass damper up or down on the speedometer cable so that the damper lines up with the middle line(s) on the speedometer cable as shown below.
3. Securely tighten the mass damper clamp bolt.
CAUTION: Ensure that the mass damper does not contact the heater hose.
SERVICE PROCEDURE B
PARTS INFORMATION
1. Remove the transaxle from the vehicle using the procedures in the appropriate Service Manual.
2. Remove the side cover of transaxle.
3. Remove output gear.
4. Draw out idler gear.
5. Install new idler gear using suitable tool.
6. Install new output gear.
CAUTION: Seal rings of the output gear must be well lubricated with petroleum jelly prior to installation of output gear.
7. Install new taper roller bearings and set the preload with proper shims using the procedure in the appropriate Service Manual.
8. Install side cover and gasket.
NOTE: On 1986 Stanza Wagon vehicles built before the VIN below, install a new side cover (P/N 31391-21X02).
Before JN1HM05S( )GX - 024821 (Before 11/85 Production)
WARRANTY INFORMATION
CS PNC CT OP CODE FLAT RATE
Procedure A (U11) 4R 25050 99 PB99AB 0.2/hr.
Procedure B - Refer to section HH in the Warranty Flat Rate Manual for Warranty Information.