Tow-Trust Towbars
TLAN4VK Towbar Installation Guide
For Range Rover L405 (2012 onwards)
Important: Please read General Notes overleaf before fitting
Parts List
| Item | Qty | Description |
|---|---|---|
| A | 1 | TLAN4 Crossmember |
| B | 2 | Handed Side Arms |
| C | 1 | 4002 Detachable Neck |
| D | 2 | ACS Lock Washers |
| E | 10 | M10 x 40 (10.9) Bolts, 2 Nuts & 10 S/P Washers |
| F | 4 | M12 x 40 Thread Rolling Bolts (80 Nm) |
| G | 8 | M12 x 40 (10.9) Bolts, 6 Nyloc Nuts & 2 S/P Washers |
| H | 4 | M12 x 25 (12.9) Bolts (145Nm) |
| J | 12 | 10 x 30 Flat Washers |
| K | 18 | 12 x 25 Flat Washers |
| L | 1 | Socket Plate 1 |
Bumper Removal
- Remove the central bumper cover.
- Remove the trim below each rear light cluster, this will reveal two fixings, one either side of the boot opening and one by each wheel arch.
- Open the upper and lower tailgate, lift the carpet flap on the lower tailgate and remove three fixings.
- Remove two fixings from around each wheel arch.
- Remove seven fixings from the lower edge.
- Remove six fixings securing the undertray.
- Carefully remove the rear bumper and undertray from the vehicle.
- Remove the rear impact beam from the rear panel. (This is not refitted with the Towbar assembly)
Towbar Installation
- Using Item E with Item J fix Item A to the rear panel ensuring any ancillaries are refitted sandwiching the Towbar.
- Using Item G with Item K fix Items B to Item A.
- Using Item G with Item K fix Items B to the two mounting points on the vehicle.
- Using Item F fix Items B to the vertical forward most mounting points. NOTE: These are untapped holes and the bolts supplied are thread rolling bolts designed to cut their own thread. (80Nm)
- Using Item H with Item K and Item D fix Item C and Item L to Item A. (Always ensure the tabs on Item D are securely folded around the bolt head of Item H)
- Fully tighten all fixings ensuring the Towbar is rigid square and secure.
- Refit the rear bumper and undertray.
- Choose one of the below options for the Towbar bumper cover.
Towbar Bumper Cover Options
Option 1: Order From Dealership
Part Numbers: LR037931, LR037913
Option 2: Cut Original Bumper Cover
Cut Pre Marked Area
Notes
1. Recommended Torque Setting for M12 Grade 10.9 - 130 Nm. (For other Torque Settings see notes overleaf.)
2. Nose load limits and vehicle manufacturers trailer / caravan weight limits must be observed.
Assembly Diagram Overview
This diagram shows the main towbar assembly. The central crossmember (A), a robust metal bar, is designed to attach to the vehicle's rear chassis. It connects to two handed side arms (B), which are shaped to fit the specific contours of the Range Rover L405 chassis. The detachable neck (C), which holds the tow ball, is also shown. The assembly uses various fasteners: M10 x 40 bolts (E) with lock washers (D) and S/P washers are used in conjunction with nuts to secure components. M12 x 40 thread rolling bolts (F) are used for direct attachment to untapped holes on the chassis. M12 x 40 bolts (G) with Nyloc nuts and S/P washers (K) provide secure fastening for the side arms. M12 x 25 bolts (H) are used with washers (K) and lock washers (D) for attaching the detachable neck assembly. Flat washers (J and K) are used to distribute load and prevent damage to surfaces.
Detailed Fastener Diagram
This diagram provides a detailed view of the fastening points. It illustrates how the side arms (B) are mounted to the crossmember (A) and the vehicle chassis. Specific fasteners like M12 bolts (G) with Nyloc nuts and washers (K) are shown connecting the side arms to the chassis. The detachable neck (C) and socket plate (L) are shown attached to the crossmember (A) using M12 bolts (H), washers (K), and lock washers (D). The diagram emphasizes the correct placement and type of bolts and washers for each connection point, ensuring a secure and rigid towbar installation.
