Service bulletin SSM63897
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10101682 |
| Published by NHTSA | 2017-06-01 |
| Manufacturer's number | SSM63897 |
| Manufacturer's date | 2014-07-31 |
| NHTSA component | POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
NHTSA's summary
"ISSUE: A NOISE WHICH CAN BE DESCRIBED AS A RUBBING/SCRAPPING/DRONE OR IN SOME CASES MAYBE REPORTED AS A VIBRATION IS FOUND TO BE EVIDENT FROM THE LEFT HAND FRONT CORNER OF THE VEHICLE. THE NOISE CAN ALSO BE DESCRIBED AS SIMILAR TO A BRAKE RUBBING OR WHEEL BEARING NOISE AND CAN BE VARIABLE FROM VEHICLE TO VEHICLE. THE ISSUE CAN OCCUR AT DIFFERENT SPEEDS/GEARS AND IN STEADY STATE DRIVING CONDITIONS UP TO 50/60MPH (80/100KM/H), HOWEVER THE NOISE IN MOST CASES IS MORE PROMINENT IN 2ND GEAR COAST DOWN PARTICULARLY AROUND 12MPH (20KM/H). TO CONFIRM, THE NOISE CAN LISTENED TO USING ‘CHASSIS EAR’ FIXED TO FRONT DIFFERENTIAL RH MOUNT. CAUSE: CHORDAL VIBRATION OF THE TRANSFER CASE CHAIN ON COAST/OVERRUN. FITMENT OF THE FRONT DIFFERENTIAL SUPPORT BRACKET MAY ELIMINATE THE NOISE WITHOUT THE NEED TO REPLACE THE COMPLETE TRANSFER BOX ASSEMBLY"
The document
No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.
Components
Transmission and driveline, Transfer case
| LAND ROVER RANGE ROVER | 2013, 2014, 2015 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| LTB00553NAS1 | 2022-06-13. Service bulletin. Technical Bulletin: Transfer Case Noise |
|---|---|
| SSM72901 | 2017-06-14. Service bulletin. ISSUE: OIL LEAKING BETWEEN THE AUTOMATIC TRANSMISSION AND TRANSFER CASE WHICH IS CURRENTLY BEING MISDIAGNOSED LEADING TO REPEAT REPAIRS, I.E. LEAKS INCORRECTLY BEING IDENTIFIED AS COMING FROM THE REAR TRANSMISSION OIL SEAL OR SUMP. |
| LTB00906NAS3 | 2017-06-13. Service bulletin. SITUATION: ON VEHICLES FITTED WITH THE TWIN SPEED TRANSFER CASE, A JUDDER MAY BE FELT FROM UNDERNEATH THE VEHICLE WHEN STEERING AT LOW VEHICLE SPEEDS, SUCH AS TURNING LEFT OR RIGHT AT AN INTERSECTION. |
| LTB00553NAS2 | 2017-06-09. Service bulletin. "SITUATION: A RUBBING/SCRAPING/DRONE-TYPE NOISE AND/OR A VIBRATION MAY APPEAR TO BE EVIDENT FROM THE FRONT LEFT-HAND CORNER OF THE VEHICLE. THE NOISE MAY ALSO BE DESCRIBED AS SIMILAR TO A BRAKE RUBBING OR WHEEL BEARING NOISE AND CAN BE VARIABLE FROM VEHICLE TO VEHICLE. THE ISSUE CAN OCCUR AT DIFFERENT SPEEDS/GEARS AND IN STEADY STATE DRIVING CONDITIONS UP TO 50/60MPH (80/100KM/H). THE NOISE IN MOST CASES IS MORE PROMINENT IN SECOND GEAR COAST DOWN, PARTICULARLY AROUND 12MPH (20KM/H). TO CONFIRM THE TRANSFER CASE IS THE ROOT CAUSE, THE NOISE CAN LISTENED TO USING A ‘CHASSIS EAR’ FIXED TO FRONT DIFFERENTIAL RIGHT-HAND MOUNT. CAUSE: THIS MAY BE CAUSED BY A CHORDAL VIBRATION OF THE TRANSFER CASE CHAIN ON COAST/OVERRUN." |
| SSM67137 | 2017-05-26. Service bulletin. "ISSUE: A RUBBING/SCRAPING/DRONE-TYPE NOISE AND/OR A VIBRATION MAY APPEAR TO BE EVIDENT FROM THE FRONT LEFTHAND CORNER OF THE VEHICLE. CAUSE: THIS MAY BE CAUSED BY A CHORDAL VIBRATION OF THE TRANSFER CASE CHAIN ON COAST/OVERRUN." |
| LTB-00553 | 2013-12-04. Service bulletin. LAND ROVER: A NOISE, ON SOME VEHICLES, COMING FROM FRONT LEFT HAND CORNER, LIKE A RUBBING, SCRAPING, OR DRONE TYPE AND ALSO A VIBRATION, DUE TO TRANSFER CASE CHAIN ON COAST, OVERRUN BY CHORDAL VIBRATION. MODEL 2013 RANGE ROVER. *PE |