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Chair Details
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See also:
. . . .
https://www.nloc.net/vbforum/showthread.php/226519-L-seats?p=2129383&viewfull=1#post2129383
https://www.fordf150.net/forums/viewtopic.php?f=21&t=118769&p=772725#p772725
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TSB 92-17-8 Front Seat Clunks

Publication Date: AUGUST 12, 1992

LIGHT TRUCK: 1992 BRONCO, ECONOLINE, EXPLORER, F SUPER DUTY, F-150-350 SERIES, RANGER

ISSUE: A "clunk" may be heard when accelerating, stopping or turning. This is normally caused by the manual front seat track latch mechanism.

ACTION: Check seat track latches and mechanisms for proper torque and alignment. Refer to the following diagnostic service procedure for details.

FRONT MANUAL SEAT DIAGNOTIC - SERVICE PROCEDURE

Econoline - Passenger's Side Front Bucket Seat On Pedestal Equipped With Under - Seat Storage:
1. Check to see if all pedestal to floor and seat track to seat cushion attachments are properly secured and torqued to specification, so that the "clunk" is not due to loose attachments. Refer to Section 01-10A of the 1992 Service Manual for the required torque specifications.
a. If the seat was properly secured, proceed to Step 2.
b. If the seat was not properly secured, torque all required attachments to Service Manual specifications and check to see if the "clunk" has been corrected. If not, proceed to Step 2.
2. Check to see if both seat track latches are fully engaged after a normal fore-aft adjustment.
a. If yes, the "clunk" is not due to the latch mechanism.
b. If not, the seat is not synchronized. Proceed to Step 3.
3. Disconnect the electrical connector for the power lumbar, If so equipped.
4. Remove the complete seat and pedestal assembly from the vehicle. Refer to the Service Manual.
5. Move the seat full front. Loosen the seat track to seat pedestal rear attachments.
6. Move the seat full rear.
7. Loosen the seat track to seat pedestal front attachments.
8. Check the engagement and alignment of the seat track latches.
9. Check the retention of the tie wire.
10. Secure and torque the seat track to pedestal front attachments to Service Manual specifications.
12. Move the seat full front.
13. Secure and torque the seat track to seat pedestal rear attachments to Service Manual specifications.
14. Connect electrical connector for the power lumbar, If so equipped.
15. Install the complete seat and pedestal assembly in the vehicle and torque the floor attachments to Service Manual specifications.
16. Check the seat for proper operation. (After a normal fore-aft adjustment, the seat should be fully latched at both sides).
17. Verify the "clunk" has been corrected.

Econoline And Aerostar Driver's Side Bucket Seat On Pedestal:
1. Check to see if all seat track to floor and seat track to seat cushion attachments are properly secured and torqued to specification, so that the "clunk" is not due to loose attachments. Refer to Section 01-01A of the 1992 Service Manual for the required torque specifications.
a. If the seat was properly secured, proceed to Step 2.
b. If the seat was not properly secured, torque all required attachments to the Service Manual specifications and check to see if the "clunk" has been corrected. If not, proceed to Step 2.
2. Check to see if both seat track latches are fully engaged after a normal fore-aft adjustment.
a. If yes, the "clunk" is not due to the latch mechanism.
b. If not, the seat is not synchronized. Proceed to Step 3.
3. Move the seat full front.
4. Loosen the seat track to pedestal rear attachments.
5. Move the seat full rear. Loosen the seat track to pedestal front attachments.
6. Illuminate seat underneath in the front. Check engagement and alignment of seat latches.
7. Check tie wire retention.
8. Secure and torque the seat track to pedestal front attachments to Service Manual specifications.
9. Move the seat full front.
10. Secure and torque the seat track to seat pedestal rear attachments to Service Manual specifications.
11. Check the seat for proper operation. (After a normal fore-aft adjustment, the seat should be fully latched at both sides.)
12. Verify that the "clunk" has been corrected.

Ranger Standard Cab - Bucket Seat Or 60/40 Seat; Ranger Standard Cab, F-Series Standard Cab, And Bronco - Bench Seats:
1. Check to see if all seat track to floor and seat track to seat cushion attachments are properly secured and torqued to specifications, so that the "clunk" is not due to loose attachments. Refer to section 01-10A of the 1992 Service Manual for the required torque specifications.
a. If the seat was properly secured, proceed to Step 2.
b. If the seat was not properly secured, torque all required attachments to Service manual specifications and check to see if the "clunk" has been corrected. If not, proceed to Step 2.
2. Check to see if both seat track latches are fully engaged after a normal fore-aft adjustment.
a. If yes, the "clunk" is not due to the latch mechanism.
b. If not, the seat is not synchronized. Proceed to Step 3.
3. Move the seat full front.
4. Loosen the seat track to floor rear attachments.
5. Move the seat full rear. Loosen the seat track to floor attachments.
6. Illuminate seat underneath in the front. Check engagement and alignment of seat track latches.
7. Check tie wire retention.
8. Secure and torque the seat track to pedestal front attachments to Service Manual specifications.
9. Move the seat full front.
10. Secure and torque the seat track to floor rear attachments to Service Manual specifications.
11. Check the seat for proper operation. (After a normal fore-aft adjustment, the seat should be fully latched at both sides.
12. Verify the "clunk" has been corrected.

Explorer 4-Door - Bucket Seat Or 60/40 Seat; Ranger Standard Cab - DSO Seat:
1. Check to see if all seat track to floor and seat track to seat cushion attachments are properly secured and torqued to specifications, so that the "clunk" is not due to loose attachments. Refer to Section 01-10A of the 1992 Service Manual for the required torque specifications.
a. If the seat was properly secured, proceed to Step 2.
b. If the seat was not properly secured, torque all required attachments to Service Manual specifications and check to see if the "clunk" has been corrected. If not, proceed to Step 2.
2. Check to see if both seat track latches are fully engaged after a normal fore-aft adjustment.
a. If yes, the "clunk" is not due to the latch mechanism.
b. If not, the seat is not synchronized. Proceed to Step 3.
3. Move the seat full front.
4. Remove the seat to floor insulators (if so equipped).
5. Remove only rear hook of assist spring.
6. Loosen the seat track to floor rear attachments.
7. Move the seat full rear.
8. Loosen the seat track to floor front attachments.
9. Illuminate seat underneath in the front. Check engagement and alignment of seat track latches.
10. Check tie wire retention.
11. Secure and torque the seat track to floor front attachments to Service Manual specifications.
12. Move the seat full front. Install rear hook of the assist spring.
13. Secure and torque the seat track to floor rear attachments to Service Manual specifications.
14. Install the seat to floor rear insulators (if so equipped).
15. Check the seat for proper operation. (After a normal fore-aft adjustment, the seat should be fully latched at both sides).
16. Verify the "clunk" has been corrected.

Ranger Super Cab, Explorer 2-Door, F-Series Super Cab, and Bronco with Tip Slide Seat:
1. Check to see if all seat track to floor and seat track to seat cushion attachments are properly secured and torqued to specifications, so that the "clunk" is not due to loose attachments. Refer to Section 01-10A of the 1992 Service Manual for the required torque specifications.
a. If the seat was properly secured, proceed to Step 2.
b. If the seat was not properly secured, torque all required attachments to Service Manual specifications and check to see if the "clunk" has been corrected. If not, proceed to Step 2.
2. Check to see if both seat track latches are fully engaged after a normal fore-aft adjustment.
a. If yes, the "clunk" is not due to the latch mechanism.
b. If not, the seat is not synchronized. Proceed to Step 3.
3. Move seat full front. (Use the under-seat adjustment lever only.)
4. Remove seat to floor rear insulators.
5. Loosen seat track to floor rear attachments.
6. Move seat full rear. (Use the under-seat adjustment lever only.)
7. Loosen the seat track to floor front attachments.
8. Illuminate seat underneath in the front. Check engagement and alignment of seat track latches.
9. Check tie wire retention.
10. Secure and torque the seat track to floor front attachments to Service Manual specifications.
11. Move the seat full front. (Use the under-seat adjustment lever only.)
12. Secure and torque the seat track to floor rear attachments to Service Manual specifications.
13. Install the seat to floor rear insulators.
14. Check the seat for proper operation. (After a normal fore-aft adjustment, the seat should be fully latched at both sides.)
15. Verify the "clunk" has been corrected.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME
921708A Passenger Side Front Bucket Seat On Pedestal Equipped With Underseat Storage (Includes Seat Assembly Removal) - Econoline 0.6 Hr.
921708B Driver's Side Bucket Seat On Pedestal (Does Not Include Seat Assembly Removal) - Econoline And Aerostar. 0.5 Hr.
921708C Bucket Seat Or 60/40 Seat, Bench Seat (Standard Cab) - Ranger, F-150-350 And Bronco 0.4 Hr.
921708D 4-Door Bucket Seat Or 60/40 Seat (Dealer Special Order) - Explorer Or Ranger Standard Cab 0.5 Hr.
921708E Tip Slide Seat - Ranger Super Cab, Explorer 2-Door, F-Series Super Cab And Bronco 0.5 Hr.