Internal Leak Test; Repair; Replacing The Lh Enclosure; Replacing The Rh Enclosure - Bosch RG8.0 Repair Instructions

en 12 | RG8.0 / RG4.0 | Repair
5.3

Internal leak test

In the event that internal leakage is suspected the fol-
lowing test can be performed to confirm or deny.
1. With nothing connected to the RG8.0 / RG4.0, en-
sure the recovery / purge valve is in the RECOVER
position.
2. Open the inlet valve and close the outlet valve.
3. Start the RG8.0 / RG4.0 and allow it to run until it
shuts off due to HP cut-out.
4. Close the inlet valve. Blue gauge should indicate 0
and high approximately 38.5 bar.
5. Note the values and observe the gauges for change
in pressure values over the next 30 seconds.
 If there is a pressure rise on the blue gauge, it
indicates damage of seals in the manifold.
6. Slowly turn the recovery / purge valve from
RECOVER to PURGE position.
 The pressure should drop on the red gauge and
rise on the blue gauge, settling at approximately
equal values.
 Note the values and watch the gauges for change
over the next 30 seconds. If there is no significant
pressure drop on either side, the internal
integrity is confirmed.
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F 002 DG9 H10 2018-08-21
6.

Repair

6.1

Replacing the LH enclosure

1. Execute the steps listed in chapter 3.1.
2. Unfasten the screws of the LH and RH enclosures
(Fig. 3, Pos. 6, 18) / (Fig. 4, Pos. 6, 19).
3. Remove the knob of the power switch (Fig. 3, Pos. 8)
/ (Fig. 4, Pos. 9).
4. Disconnect the power switch from the LH enclosure
and replace with the new LH enclosure.
5. Insert the power switch into the slot of the new LH
enclosure.
"
You have successfully replaced the LH enclosure.
6.2

Replacing the RH enclosure

1. Execute the steps listed in chapter 3.1.
2. Unfasten the screws of the RH enclosure
(Fig. 3, Pos. 18) / (Fig. 4, Pos. 19).
3. Replace with a new RH enclosure.
"
You have successfully replaced the RH enclosure.
6.3

Replacing the HMI cover

1. Execute the steps listed in chapter 3.1.
2. Remove the knobs (Fig. 3, 4, Pos. 13, 14 15).
3. Peel off the HMI cover (Fig. 3, 4, Pos. 16).
4. Clean the surface of the front panel
(Fig. 3, 4, Pos. 17) before pasting the HMI cover.
5. Peel off the covering on the adhesive surface of the
new HMI cover.
6. Paste the new HMI cover on the front panel.
7. Fix the knobs back in position.
"
You have successfully replaced the HMI cover.
Bosch Automotive Service Solutions GmbH