DESIGN CHANGE (CLARK 390V) MANUAL TRANSMISSION

SUBJECT: DESIGN CHANGE - CLARK 390V SERIES MANUAL TRANSMISSIONS

MODELS: B6P042, C6D042, C7D042, C7D064, J8C042, J8C064 WITH SUBJECT TRANSMISSION

Effective Start of Production 1981, a change was integrated into the Clark 390 and 397V Series Transmissions. Third and fourth gear/mainshaft interface now relies on needle roller bearing sets replacing the formaer bushed design to the needle bearing design is possible and will require the use of parts described below.

Transmission 390V 390V 397V 397V

Model B6P042 J8C042 C6D042 J8C042 C6D0422 J8C064 C7D042 J8C064 C7D042, C7D064 C7D064 JSC042, J8C064 (Gas & (Gas & Diesel) (Diesel) (Diesel) (Diesel) ---------------------- -------------- ------- --------- -------- Main Shaft 2083614 2086324 2083614 2086324 3rd Gear 2083615 - 2083629 2083629 3rd Gear Thrust Washer 2083619 - - - 4th Gear 2083621 - 2083630 2083630 4th Gear Brg Spacer 2083627 - - 4th-5th Shift Sleeve 2083622 - - Lock Ball 147483 - - - Snap Ring 2280075 - - - Needle Bearings (164) 9437120 - - - 3rd Gear Brg Spacer (2) 2003122 - - - Mainshaft Spacer 2086325

"-" Denotes same as preceding column

Assembly instructions are detailed in the Clark Unit Overhaul Manual, Revised 12-80 Edition.

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