Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Case: Service and Repair

RAD Four Speed Transmission Disassembled. (Typical):





1. Remove detent screw, spring and plunger.
2. Pull shifter rod shaft rearward and rotate counter-clockwise. Remove manual selector and interlock to shaft spring pin, shifter shaft, manual selector and interlock from cover.
3. Remove 1st-2nd shift fork, then the 3rd-4th shift fork.
4. Reverse procedure for reassembly.