Checking The Setting Of The Suspension Non Return Valves; Checking The Seating Of The Valves - CITROËN ID 19 Repair Manual

ID 19
OPERATION No. ID 393-O
: Checking a distribution block
Op. ID 393-O 201
In order to carry out this operation the test bench must be prepared as shown in Pl. 125 (test bench 2290-T)
. . . . . .
CHECKING THE SETTING OF THE SUSPENSION NON-RETURN VALVES (see Pl. 131).
Seal the end aperture "h" of the distribution block with plug (V).
Connect the middle aperture "it' in the block tarthe aperture "a" of the test bench pump, using a pipe (H). Fit the
outlet pipe (N) to the aperture "j".
Make sure that the bleed screw "b" is tightened; operate the pump in order to raise the pressure gradually.
The valve must respond in the following conditions :
a) With a pressure of less than 56 lbs. sq. in. (4 kg/cm') no fluid should flow through the pipe (N).
b) With a pressure of more than 98 lbs. sq. in. (7 kg/cm2) there must be a flow of fluid through the pipe (N).
NOTE - If the pressure becomes stabilised outside these limits, change the spring.
If the pressure falls to zero,
the valve is not seating and the seat of the ball must be remade (see paragraph 5,
Op. ID 393-3).
Proceed in the same way for the aperture "h" after having blocked the aperture "j".
CHECKING THE SEATING OF THE VALVES (see Pl. 130).
Connect the end aperture "h" of the distribution block to the aperture "a" on the test bench pump, using the
pipe (H)-
Tighten the bleed screw "b". Operate the pump to raise the pressure to 2133 lbs. sq. in. (150 kg/cm2).
The
pressure gauge (M2) must not show any
loss
of pressure; if it does,
the valve must be considered defective.
The ball must be replaced and the seating remade (see Op. ID 393-3, paragraph 5).
Release the pressure by undoing the bleed screw "b" on the pump and repeat the preceding operations for the
other aperture "j" of the distribution block.
Release the pressure by undoing the bleed screw "b" of the pump. Remove the pipe (H).
TOOLS
Test bench 2290-T