300E (124.026) L6-2.6L (103.940) (1990)
1.
Depending on accessibility, select the appropriate service valves (Figure 5 and Figure 6) or adapter hose (4, Figure 7) and install on the low- and
high-pressure side of the A/C system (A, Figure 2 and C, Figure 4).
Tightening torque: 7.5 + 0.5 N-m
CAUTION:
The threads of the service valves are treated with a chemical thread locker, which becomes effective after 15 minutes. When installing the hose, make
certain that the hose and service valve do not come in contact with any moving parts. Removal of the service valve beyond this time span is not
possible.
Note:
The adapter hose (4, Figure 7) is designed for use in areas with difficult access to the service valve. Additionally, depending on the application (high-
or low-pressure side), the standard service valve with respective protective cap (Figure 5) must be installed on the open end of the adapter hose
(circle, Figure 7).
CAUTION
Be careful not to mix up low-pressure (blue) and high-pressure (red) service valve caps when installing the service valves into A/C lines.