Engine Mount/Suspension - Knocks/Rattles

91ford04

^ SUSPENSION - TORQUE SPECIFICATIONS - REVISION


^ NOISE - "CLUNKS", "KNOCKS" AND "RATTLES" - LOOSE SUSPENSION OR MOTOR MOUNT ATTACHING HARDWARE


Article No. 91-4-7


LINCOLN-MERCURY: 1991 CAPRI


ISSUE: A "clunking", "knocking" or "rattling" noise may come from under the hood or the underbody area. This usually occurs because of loose suspension or motor mount attaching hardware.


ACTION: Check the suspension components and motor mount attaching hardware for proper torque. If loose, tighten to the proper torque specifications. Refer to the following procedure for service details.

U-CLAMP BOLTS

Figure 1:

1. Inspect the U-clamps on the lower control arms for the presence of any underbody sealer or tape between the U-clamps and the mounting surface to the underbody, Figure 1.

2. If sealer or tape is present, remove the two bolts holding the clamp and remove the sealer or tape from the area.

3. Re-install the bolts and tighten to 44-54 lb.ft. (59-74 N-m).

LOWER CONTROL ARM FRONT PIVOT BOLT

1. Attempt to tighten the lower control arm front pivot bolt to 55-60 lb.ft. (80 N-m), Figure 1.

2. If any movement is noticed, proceed as follows:

a. Remove the bolt.

b. Clean the threads with a wire brush.

c. Apply Threadlock and Sealer (EOAZ-19554-AA).


d. Re-install the bolt and tighten to 69-86 lb.ft. (93-117 N-m).


ENGINE SUPPORT BOLT TOROUES

Figure 2:

1. Inspect the engine support for the presence of underbody sealer or tape between the engine support and the mounting surface to the underbody, Figure 2.


2. If sealer or tape is present, remove the bolts holding the engine support to the underbody.


3. Remove the sealer or tape from this area.


4. Re-install the bolts and tighten to 47-66 lb.ft. (64-89 N-m).


ENGINE MOUNT TORQUE SPECIFICATIONS


Make sure all the bolts and nuts on the front, rear and top RH engine mounts are tightened to the specifications provided in the following Engine Mount Torque Specification Chart.


ENGINE MOUNT TORQUE SPECIFICATION CHART


N-m LB.FT.
DESCRIPTION TORQUE TORQUE

RH Engine Mount Body Bracket - Bolt (1) 67-91 49-67
RH Engine Mount Through Bolt 45-65 33-48
Front Engine Mount to Transmission - Bolt 37-52 27-38
Front Engine Mount - Nut 64-89 47-66
Rear Engine Mount - Bolt 37-52 27-38
Rear Engine Mount - Nut 64-89 47-66
RH Engine Mount Body Bracket - Bolt (3) 20-28 14-21

PART NUMBER PART NAME CLASS

EOAZ-19564-AA Threadlock & Sealer B


OTHER APPLICABLE ARTICLES: None


WARRANTY STATUS: Eligible Under Basic Warranty Coverage

OPERATION DESCRIPTION TIME

910407A Inspect U-Clamps And 0.2 Hr.
Remove Sealer Or Tape
910407B Check Lower Control Arm 0.3 Hr.
Front Pivot Bolts
910407C Check Engine Support Bolt 0.2 Hr.
Torques
910407D Check Engine Mount 0.2 Hr.
Torques

DEALER CODING

BASIC PART NO. CONDITION CODE
3078 56

OASIS CODES: 702000, 304000