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

Cylinder and Shaft Assembly

R-4 Compressor Component View:






Remove or Disconnect

1. Clutch drive hub (3).
2. Rotor (5) and bearing (6).
3. Shaft seal (12).
4. Front head (15).
5. Thrust (20) and Belleville (21) washers.
6. Shell (18).
7. Discharge plate (31).
8. High pressure cut-off switch (26).
9. Pressure relief valve (24).

Install or Connect

1. Pressure relief valve (24).
2. High pressure cut-off switch (26).
3. Discharge reed (33) and plate (31).
4. Shell (18).
5. Thrust (20) and Belleville (21) washers.
6. Front head (15).
7. Shaft seal (12).
8. Rotor (5) and bearing (6) assembly.
9. Clutch drive hub (3).