Manual:LAND ROVER Range Rover Supercharged 2015Page:49184 / 73010



'SQUEAL' Noise From Front Brakes During Moderate Braking - High Performance Brakes Only (LTB00857NAS7) — 2015 Land Rover Range Rover Supercharged Service Manual

'SQUEAL' Noise From Front Brakes During Moderate Braking - High Performance Brakes Only (LTB00857NAS7)

WARNING: This page is about the Range Rover Base, which is a different variant/trim than selected.
Publication date: 2018-09-17
Reference number: LTB00857NAS7
Supersedes refnos: LTB00592NAS1, LTB00592NAS2, LTB00592NAS3, LTB00857NAS1, LTB00857NAS2, LTB00857NAS3, LTB00857NAS6

'SQUEAL' NOISE FROM FRONT BRAKES DURING MODERATE BRAKING - HIGH PERFORMANCE BRAKES ONLY

'SQUEAL' NOISE FROM FRONT BRAKES DURING MODERATE BRAKING - HIGH PERFORMANCE BRAKES ONLY

TECHNICAL SERVICE BULLETIN

Reference Number(s): LTB00857NAS7, Date of Issue:  September 17, 2018
LAND ROVER: 2014 Range Rover Sport (LW); 2014-2015 Range Rover Sport (LW); 2014-2016 Range Rover Sport (LW); 2014-2017 Range Rover Sport (LW); 2016-2017 Range Rover Sport (LW); 2013-2017 Range Rover (LG)
SECTION: 206-03
AFFECTED VEHICLES RANGE: See The Chart Below

AFFECTED VEHICLES RANGE

G00576321

MARKETS

NORTH AMERICA

CONDITION SUMMARY

NOTE: Jaguar Land Rover braking systems are designed to achieve peak performance under a broad range of driving conditions. Jaguar Land Rover's priority is the safety of its braking systems, and they are designed to perform in all circumstances, however the brake may, dependent on the environment and driving style, produce the occasional noise. This does not impair the operation or performance. Brake noise is an issue facing many vehicle manufacturers and Jaguar Land Rover are constantly working in conjunction with the leading brake caliper and brake pad suppliers to develop design solutions which reduce brake squeal noises.

SITUATION: 

On vehicles installed with the high performance brake system (380mm diameter front brake disc), a 'squeal' noise may be heard from the front brakes during low-speed driving forward/backward, the 'squeal' can be heard also during moderate brake pedal application at low speeds, until the vehicle comes to a stop. The 'squeal' noise may resonate at frequencies of around 7kHz and 8kHZ.

CAUSE: 

This may be caused by front brake pad resonance.

ACTION: 

Should a customer express this concern, follow the Workshop Procedure outlined below.

PARTS

NOTE: An allowance of $0.77USD or local equivalent has been allocated for long life lubricating grease (LR020972); claim using 'ZZZ001'. One tube of grease will repair 50 vehicles.
PARTS INFORMATION

PART NUMBER DESCRIPTION QUANTITY
LR114004 Front brake pad set 1
LR033275 Wire - Brake pad wear sensor - Where applicable 1
LR033274 Caliper bolts 4
LR020972 Long life lubricating grease 1
LR016685 Brake caliper dust boots - Where applicable 2

WARRANTY

NOTE: An allowance of $0.77USD or local equivalent has been allocated for long life lubricating grease (LR020972); claim using 'ZZZ001'. One tube of grease will repair 50 vehicles.
NOTE:
  • Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to JLR claims submission system to obtain the latest repair time.
  • The JLR Claims Submission System requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
WARRANTY INFORMATION

DESCRIPTION SRO TIME (HOURS) CONDITION CODE CAUSAL PART
Front brake pads - Renew 70.40.02.36 0.7 42 LR020362
Front brake caliper dust boots - Renew - Caliper removed for access 70.55.40.01 0.5 42 LR016685
NOTE: Normal Warranty procedures apply.

WORKSHOP PROCEDURE

WARNING: Brake pads must be renewed in axle sets only. Failure to follow this instruction may result in braking efficiency being impaired.
  1. WARNING: Make sure to support the vehicle with axle stands.

    Raise and support the vehicle (see TOPIx Workshop Manual section 100-02: Service Information - Jacking and Lifting).

  2. Remove the brake pads (see TOPIx Workshop Manual section 206-03: Brake System - Front Brake Disc).
    • Follow steps  1- 6 for the removal.
  3. CAUTION:
    • Make sure that no load is placed on the brake hose.
    • Discard the bolts.
    G12080522

    Remove and discard the bolts.

    • Reposition the caliper, making sure to leave access to the brake caliper pistons and brake caliper piston dust boots.
  4. CAUTION:
    • Do not damage the brake caliper pistons or the brake caliper piston dust boots.
    • Make sure the brake caliper piston dust boots are correctly seated.
    G12080523

    Inspect brake caliper piston dust boots for damage.

    • If there is no damage to the brake caliper piston dust boots, go to Step  6.
    • If there is damage to the brake caliper piston dust boots, go to Step 5.
  5. Replace the brake caliper piston dust boots (see TOPIx Workshop Manual section 206-03: Front Disc Brake - Brake Caliper Dust Boot - Vehicles with: High Performance Brakes)
  6. NOTE: The brake caliper pistons and brake caliper piston dust boots MUST be cleaned thoroughly. Failure to follow this instruction may result in the brake pads not adhering to the brake calipers pistons properly, leading to reduced effectiveness of the repair.
    G12080524

    Thoroughly clean all of the brake caliper pistons and the brake caliper piston dust boots with brake cleaner to remove all traces of grease and dust.

  7. CAUTION:
    • Make sure that no load is placed on the brake hose.
    • New bolts MUST be installed.
    G12080525

    Install the brake caliper.

    • Torque: Stage 1: 133 Nm 
    • Torque: Stage 2: 60° 
  8. CAUTION: Apply long life lubricating grease only to the highlighted areas shown.
    G12080526

    Apply long life lubricating grease to both ends of the brake pads.

  9. G12080527

    Gently remove the brake pad backing.

  10. Install the brake pads (see TOPIx Workshop Manual section 206-03: Front Disc Brake - Brake Pads - steps  7-10 for installation).