300SD (126.120) L5-3.0L DSL Turbo (617.951) (1982)
Accumulator: Testing and Inspection
Accumulator Level Control
CHECKING PRESSURE RESERVOIR
Data
Gas filling pressure of pressure reservoir:
When new: 23 ± 1 bar
min. value: 15 bar
Note: Inspection jobs require the following components of tester:
Pressure gauge (0-250 bar gauge pressure) with connection, coupling nut with sealing ring (038a), transfer connection (c), test hose (d), couplings (f),
test line (g), and (I), bleed screws (n) and distributor (r). Screw only one bleed screw (n) into distributor (r).
Checkup of pressure reservoirs includes gas filling pressure and can be made on operational vehicle only, similar to pressure oil pump and to level
controller.
Insufficient gas filling pressure results in an abnormal pressure increase during deflection. This will be noticed by a considerable hardening of the
suspension system and may very well result in damage to suspension elements. In addition, hardening of suspension may lead to a reduction of the
damping force of the spring struts, which in turn will result in an increased tendency toward rolling and toward rocking of vehicle when driving around
alternating bends.
Checkup