Measure thickness of the brake pads - AP42.10-P-4253-01GZ

MODEL 117, 164, 166, 169, 172, 176, 197.3/4, 203, 204, 207, 209, 212, 216 (except 216.374/377/379), 218, 221 (except 221.074/077/174/177/179), 222, 230, 231, 242, 245, 246, 251 

Fig 1: Identifying Brake Pad Test Gauge (211 589 06 23 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Gauge Adapter (164 589 10 23 00)

Courtesy of MERCEDES-BENZ USA

Measurement possible at the front axle with floating caliper brake system on 

• Model 164, 166, 169, 172, 203, 204, 207, 209, 212, 218, 222, 242, 245, 246, 251

Measurement possible at the rear axle with floating caliper brake system on 

• Model 164, 204, 207, 212, 216, 218, 221, 222, 230, 231, 242, 246, 251

Where possible measurement to be at front axle with 4 or 6-piston and rear axle with 4-piston fixed-caliper brake system on 

• Model 197, 204, 209, 212, 218, 222, 230, 231

1. Position slide (1) on the drive plate (2).

   Before each measurement position the slide (1) on the drive plate (2) in order to avoid measurement errors.

   Fig 3: Identifying Brake Pad Gauge, Adapter And Bracket

   Courtesy of MERCEDES-BENZ USA

   Measurement on front axle without gauge adapter (011) with brake pad check gauge (010) 

2. Insert measuring drift (3) in the test bore of the brake lining carrier at the outer brake pad (4).
3. Mount brake pad check gauge (010) up against brake pad support so that the red ring (5) is at the top.
4. Remove brake pad check gauge (010) and read off thickness of the friction lining without pad backing plate at slide (1).

   Read off value on the scale with the brake lining wear symbol, otherwise a wrong value will be determined.

   Fig 4: Mounting Brake Pad Check Gauge

   Courtesy of MERCEDES-BENZ USA

   Measurement on front axle without gauge adapter (011) on vehicles without test bores, except model 164, 166, 251 

5. Position brake pad check gauge (010) on outer brake pad (4), as shown.
6. Press brake pad check gauge (010) towards the brake pad (4) until as much as possible of the red ring (5) lies on flat.

   The brake pad check gauge (010) must be at a right-angle to the brake disk's friction surface.

7. Remove brake pad check gauge (010) and read off thickness of the friction lining without pad backing plate at slide.

   Read off value on the scale with the brake lining wear symbol, otherwise a wrong value will be determined.

   Fig 5: Positioning Brake Pad Check Gauge

   Courtesy of MERCEDES-BENZ USA

   Measurement on front axle with gauge adapter (011) for model 164, 166, 251 

8. Pull check gauge adapter (011) out of the bracket (012) and connect up to the end stop on the measuring drift.
9. Mount the tip of the check gauge adapter (011) on the friction surface of the brake disk.
10. Position brake pad check gauge (010) on the floating brake caliper (6) as shown so that as much as possible of the red ring (5) lies on flat.

    The brake pad check gauge (010) must be at a right-angle to the brake disk's friction surface.

    Fig 6: Installing Brake Pad Check Gauge

    Courtesy of MERCEDES-BENZ USA
11. Read off value on the scale with the brake lining wear symbol, otherwise a wrong value will be determined. at slide.

    Remove brake pad check gauge (010) and read off thickness of the friction lining without pad backing plate

    Measurement on rear axle without gauge adapter (011) 

12. Insert measuring drift (3) in the test bore of the brake lining carrier at the outer brake pad (4).
13. Mount brake pad check gauge (010) up against brake pad support so that the red ring (5) is at the top.
14. Remove brake pad check gauge (010) and read off thickness of the friction lining without pad backing plate at slide.

    Read off value on the scale with the brake lining wear symbol, otherwise a wrong value will be determined.

    Fig 7: Measuring Drift In Brake Lining Carrier Test Bore

    Courtesy of MERCEDES-BENZ USA