Check Condition And Operation Of Trailer Hitch - AP31.11-P-3152GA
Model 463
as of model year 2019
with code Q55 (Trailer coupling ball headed)
Model 463
as of model year 2019
with code Q59 (Trailer hitch, removable)
Shown on model 463.349 with code Q55
(Trailer hitch with ESP® trailer stabilization)
Shown on model 463.349 with code Q55
(Trailer hitch with ESP® trailer stabilization)
| Remove | |||
| 1 | Remove cover (2b) from ball head (2a). | ||
| Check | |||
| 2 | Check trailer socket (3) and ball neck (2) for damage and corrosion. | If problems occur, ↓ rectify the problems. |
|
| Clean | |||
| 3 | Clean ball head (2a) with water and brush, and dry off using a lint-free rag. | Do not use any high pressure or steam cleaning equipment nor any solvent or cleaning agent. Otherwise, the ball head (2a) may be damaged. If corrosion is present on the ball head (2a), ↓ remove corrosion using wire brush. |
|
| Measure | |||
| 4 | Measure diameter of ball head (2a). | Minimum diameter of ball head If the minimum diameter of ball head (2a) is less than the specified value, ↓ Rectify problem. |
*BE31.11-P-1001-01A |
| Check | |||
| 5 | Check that screws (4) securing trailer hitch to frame are tightened to specified torque. | If the screws move during the test, it is essential to replace them with new ones. Damage can otherwise occur. If problems occur, ↓ rectify the problems. |
*BA31.10-P-1001-01A |
| Grease | |||
| 6 | Apply light coating of grease to ball head (2a). | Inform the customer that when using trailers with an anti-swerve device whose effect is based on friction with the ball head (2a), the ball head (2a) must be degreased before the trailer is coupled. Otherwise the friction between the friction linings and the ball head (2a) is reduced, and the swerving and pitch motions are no longer suppressed. MB multipurpose grease, 5 kg |
*BR00.45-Z-1034-06A |
| Install | |||
| 7 | Fit cover (2b) onto ball head (2a). |
CHECK VALUES FOR TRAILER HITCH
| Number | Designation | Model all (4xWD, CAR, Light transporter, smart) | ||
|---|---|---|---|---|
| BE31.11-P-1001-01A | Minimum diameter of ball head | mm | 49 | |
TRAILER HITCH
| Number | Designation | Model 463 as of model year 2019 | ||
|---|---|---|---|---|
| BA31.10-P-1001-01A | Bolt, trailer hitch to frame | Nm | 160 | |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1034-06A | MB multipurpose grease, 5 kg | A 001 989 34 51 10 |