Suspension - Bounce At 35-40 mph
85honda01Model Applicable To File Under
'84 and '85 ALL '84
Civic 85 up to SUSPENSION
VINs listed
And CRX
Bulletin No. 85-012
Issue Date MAR 29, '85
Civic Ride Quality at 35-40 mph (Supersedes 84-037 dated JUNE 25, '84)
PROBLEM A slight bouncing sensation or vibration from the front end of the car while driving on a smooth road at 35-40 mph.
CAUSE Engine mount resonance induced by normal suspension vibration at 35-40 mph.
CARS AFFECTED
LEFT MOUNT:
STOP BRACKET:
CORRECTIVE ACTION Replace engine mounts according to the chart above. Follow the procedure on the back of this page, and use the parts listed under PARTS INFORMATION.
PARTS INFORMATION Right and rear mount set:
Manual: H/C 2032555 P/N 50020-SB2-000
Automatic: H/C2032563 P/N50020-SB2-980
Left mount: H/C 1835610 P/N 50820-SB6-932
WARRANTY CLAIM INFORMATION
Operation numbers
and flat rate times: Right and rear engine mounts: 112105 for 0.8 hour.
All three engine mounts: 112115 for 1.1 hours.
Failed part H/C: 161503
Defect code: 045
Contention code: B02
1. Support the engine with a jack or hoist.
NOTE: If you're not replacing the left mount, go on to step 4.
2. Remove and discard the left engine mount.
LEFT MOUNT:
3. Install the new left mount and tighten its nuts and bolt so they're just snug.
4. Raise the front end of the car on jack stands, then support the engine with a jack or hoist.
5. Remove the two nuts and two bolts from the rear mount, then raise the engine slightly and remove the mount.
STOP BRACKET:
6. Transfer the stop bracket from the old rear mount to the new one, and torque its bolts to 22 N-m (16 ft.lbs).
7. Install the new rear mount and torque its two bolts to 65 N-m (47 ft.lbs); torque the two nuts to 22 N-m (16 ft.lbs).
SPLASH SHIELD/RIGHT BRACKET:
8. Remove the right splash shield (metal screws, and plastic screws in expansion clips).
9. Remove the nut from the stud on the right mount bracket. Then remove the two bolts holding the mount itself to the frame. Lower the engine as necessary, and slide the mount off the stud.
10.Install the new right mount and tighten its bolts and nut so they're just snug. Then, from under the car, make sure the stop bracket on the rear mount has 4 mm clearance around it as shown in step 5. If it doesn't, pry the engine forward or back as necessary to get as close to 4 mm as possible. Then torque the two bolts in the right mount to 45 N-m (33 ft.lbs).
11. Remove the jack or hoist from the engine.
NOTE: If you aren't replacing the left mount, skip steps 13 and 14.
12. Torque the nut on the end of the right mount to 65 N-m (48 ft.lbs). Then reinstall the splash shield.
13. Again make sure the stop bracket in the rear mount has 4 mm clearance around it. If it doesn't, pry against the left mount as shown to move it forward; hold it there while you tighten both nuts (tighten the one nearest the fender
Stop Bracket:
first), then release the mount and it will push the engine rearward slightly. Torque the nuts in the left mount to 75 N-m (55 ft.lbs).
14. Torque the long bolt in the left mount to 65 N-m (48 ft.lbs).