SL L4-1.9L SOHC VIN 9 (1991)
2. Remove brake drum and install on hub backward; secure brake drum with two wheel nuts also installed backwards (flat side toward brake drum).
3. Fasten a dial indicator to the knuckle or strut - to - knuckle fastener.
4. Position dial indicator tip against brake drum shoe surface.
5. Rotate the brake drum to the lowest reading.
6. Zero the dial indicator.
7. Rotate the brake drum one complete revolution and observe total indicated runout (TIR). Maximum TIR (combined brake drum and hub): 0.28 mm
(0.011 in.)
a. If the combined brake drum and hub radial runout does not exceed 0.28 mm (0.011 in.), proceed to step 8.
b. If the combined drum and hub radial runout exceeds 0.28 mm (0.011 in.), proceed to step 14.
8. Move dial indicator neck to allow removal of the brake drum. It is not necessary to remove dial indicator from the knuckle or strut-to-knuckle
fastener.
9. Remove brake drum from hub and turn 180 degrees and again, install on hub backward. Secure brake drum with two wheel nuts also installed
backwards (flat side toward brake drum).
10. Position dial indicator tip against brake drum shoe surface.
11. Rotate the brake drum to the lowest reading.
12. Zero the dial indicator.
13. Rotate the brake drum one complete revolution and observe total indicated runout (TIR).
Maximum TIR (combined brake drum and hub): 0.28 mm (0.011 in.)
a. If the combined brake drum and hub radial runout does not exceed 0.28 mm (0.011 in.), brake drum and hub are within specification and no repair
is required. Refer to brake pulsation diagnosis in the appropriate year service manual.
b. If the combined brake drum and hub radial runout exceeds 0.28 mm (0.011 in.), proceed to step 14.
14. Remove brake drum and install on a brake lathe.
15. Fasten a dial indicator to the lathe.
16. Position dial indicator tip against brake drum shoe surface.
17. Rotate brake drum to the lowest reading.
18. Zero the dial indicator.
