Transfer Case - Ratcheting Noise
83ford7 Article No. 83-21-14TRANSFER CASE - NP208 - RATCHETING NOISE, INCOMPLETE DISENGAGEMENT - (4x4)
LIGHT TRUCKS 1980-84 F-150/250, BRONCO
Effective in production February 1, 1983, the New Process Gear 208 transfer case assembly incorporated a new mainshaft assembly featuring a positive stop to prevent 4-wheel drive disengagement. The overall width of the sliding clutch decreases from 1.262 to 1.080 inches to accomodate the positive stop.
Some transfer case assembled built after February 1, 1983 may have been assembled with the wide (1.262 inch) sliding clutch and with the new design mainshaft incorporating the "positive stop" design. This mismatching of parts results in either incomplete engagement or disengagement causing an interference or "ratcheting" condition. To eliminate objectionable "ratcheting" noise in the transfer case on any 1983 F-150/250 4x4, or Bronco vehicle built after February 1, 1983 or any previously serviced vehicles, the sliding clutch; mainshaft, sliding clutch, and modeshift spring service assembly kit, E3TZ-7061-L should be installed using all parts.
The part numbers listed below as "obsolete" are no longer released for service and should not be used due to potential of "mismatching" components. Each individual service kit is now replaced by one kit, Part No. E3TZ-7061-L, which includes a mainshaft, sliding mode clutch, and a modeshift spring.
PART NUMBER PART NAME CLASS
E3TZ-7061-L Mainshift Kit B
(shaft, sliding clutch, spring)
OBSOLETED PARTS
PART NUMBER
E0TZ-7100-D E3TZ-7100-G E3TZ-7100-H E1TZ-7061-B E1TZ-7061-D E3TZ-7061-J
OTHER APPLICABLE ARTICLES: 82-18-10
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: M
TIME: "Actual Time" as defined in the Warranty and Policy Manual. DLR. CODING: Basic Part No. 7100 Code: 16